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Android tv app keep Crashing with memory exception error

I am creating an android tv app in the app I am sliding infinity loop fragments (Image and Video URLs ). I use glide for image loading and exoplayer2 for video loading it's working perfectly in my emulator and other 2-3 devices but when I run it in my actual android tv it keeps crashing after some time with an error memory exception. I tested it In emulator using profiler how much memory it using but it is only using min 100 Mb not bigger than that I even check for a leak using leak cannery no leak was found I can't find any solution can someone please help me
Fragment:
`public class BannerFragment extends Fragment {
/*TODO TAGs*/
private String TAG = BannerFragment.class.getSimpleName();
/*TODO View Binding*/
private BannerFragmentBinding vb;
private PromotionalBanner promotionalBanner;
private int position;
private ArrayList<PromotionalBanner> promotionalBannerArrayList;
private CountDownTimer timer;
SimpleExoPlayer simpleExoPlayer;
private final String VIDEO_BUFFER_TIMER = "10000";
/*TODO Glide Listener*/
private RequestListener requestListener = new RequestListener<Drawable>() {
#Override
public boolean onLoadFailed(#Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
if (vb != null) {
ShowToast(" Can't load image ");
vb.avi.setVisibility(View.GONE);
slideNextItem();
}
return false;
}
#Override
public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
if (vb != null) {
vb.avi.setVisibility(View.GONE);
}
return false;
}
};
/*TODO PlayerListener*/
private Player.Listener playerListener = new Player.Listener() {
#Override
public void onIsPlayingChanged(boolean isPlaying) {
Log.e(TAG, "onIsPlayingChanged: " + isPlaying);
}
#Override
public void onPlaybackStateChanged(int playbackState) {
if (playbackState == Player.STATE_ENDED) {
slideNextItem();
} else if (playbackState == Player.STATE_READY) {
vb.avi.setVisibility(View.GONE);
if (timer != null) {
timer.cancel();
timer = null;
}
Log.e("TimerCheck", "onPlaybackStateChanged: endTimer "+timer );
} else if (playbackState == Player.STATE_BUFFERING) {
vb.avi.setVisibility(View.VISIBLE);
setSlideTimer(VIDEO_BUFFER_TIMER);
Log.e("TimerCheck", "onPlaybackStateChanged: startTimer "+timer );
} else if (playbackState == Player.STATE_IDLE) {
slideNextItem();
}
}
#Override
public void onPlayWhenReadyChanged(boolean playWhenReady, int reason) {
}
};
/*TODO get Fragment Instant*/
public static Fragment getInstantFragment(PromotionalBanner promotionalBanner,
int index,
ArrayList<PromotionalBanner> promotionalBannerArrayList) {
BannerFragment fragment = new BannerFragment();
Bundle bundle = new Bundle();
bundle.putParcelable("promotionalBanner", promotionalBanner);
bundle.putInt("position", index);
bundle.putParcelableArrayList("list", promotionalBannerArrayList);
fragment.setArguments(bundle);
return fragment;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.promotionalBanner = getArguments().getParcelable("promotionalBanner");
this.position = getArguments().getInt("position");
this.promotionalBannerArrayList = getArguments().getParcelableArrayList("list");
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
vb = BannerFragmentBinding.inflate(getLayoutInflater());
return vb.getRoot();
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Override
public void onResume() {
super.onResume();
if (!isImageFile(promotionalBanner.getMedia())) {
showVideoViewContainer();
setVideo(promotionalBanner);
} else {
hideVideoViewContainer();
loadImage(promotionalBanner.getMedia(), promotionalBanner.getDuration());
/*TODo set image Timer*/
setSlideTimer(promotionalBanner.getDuration());
}
}
/*TODO setVideo*/
private void setVideo(PromotionalBanner promotionalBanner) {
Uri uri = Uri.parse(promotionalBanner.getMedia());
Log.e("dataUriTest", "setVideo: " + uri);
simplePlayer(uri);
}
/*TODO Simple Player*/
private void simplePlayer(Uri uri) {
simpleExoPlayer = new SimpleExoPlayer.Builder(getContext()).build();
simpleExoPlayer.addMediaItem(MediaItem.fromUri(uri));
setSlideTimer(VIDEO_BUFFER_TIMER);
Log.e("TimerCheck", "onPlaybackStateChanged:insideSimplePlayer startTimer "+timer );
vb.avi.setVisibility(View.VISIBLE);
vb.videoView.hideController();
vb.videoView.setPlayer(simpleExoPlayer);
simpleExoPlayer.prepare();
simpleExoPlayer.setPlayWhenReady(true);
simpleExoPlayer.addListener(playerListener);
}
/*TODO Go To next From vide Slide*/
private void slideNextItem() {
if(simpleExoPlayer != null){
simpleExoPlayer.release();
simpleExoPlayer = null;
}
int nextposition = position + 1;
goToNextItem(nextposition);
}
#Override
public void onPause() {
super.onPause();
Log.e("LogBannerFragment", "onPause: ");
if (timer != null) {
timer.cancel();
}
if (simpleExoPlayer != null) {
simpleExoPlayer.release();
simpleExoPlayer = null;
}
}
#Override
public void onDestroy() {
super.onDestroy();
Log.e("Destory", "onDestroy: " );
if (playerListener != null) {
playerListener = null;
}
if (requestListener != null) {
requestListener = null;
}
if (vb != null) {
vb = null;
}
}
#Override
public void onDestroyView() {
super.onDestroyView();
}
/*TODO load Image*/
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private void loadImage(String media, String duration) {
vb.avi.setVisibility(View.VISIBLE);
Glide.with(getContext()).load(convert_http_https(media))
.diskCacheStrategy(DiskCacheStrategy.RESOURCE)
.error(getContext().getDrawable(R.drawable.banner))
.addListener(requestListener)
.into(vb.imageView);
}
/*TODO convert url http to https in android studio*/
private String convert_http_https(String url) {
String original;
if (url.contains("https")) {
original = url;
} else {
original = url.replace("http", "https");
}
return original;
}
/*TODO set Image timer*/
private void setSlideTimer(String duration) {
timer = new CountDownTimer(Integer.parseInt(duration), 1000) {
#Override
public void onTick(long millisUntilFinished) {
}
#Override
public void onFinish() {
int nextPosition = position + 1;
// int nextPosition = DispolyActivity.vb.viewPager.getCurrentItem()+1;
goToNextItem(nextPosition);
}
};
timer.start();
}
/*TODO Next Position in arrayList*/
private void goToNextItem(int nextPosition) {
HandlerCompat.createAsync(Looper.getMainLooper())
.post(() ->
DispolyActivity.vb.viewPager.setCurrentItem(nextPosition)
);
}
/*TODO is image file*/
public static boolean isImageFile(String path) {
String mimeType = URLConnection.guessContentTypeFromName(path);
return mimeType != null && mimeType.startsWith("image");
}
/*TODO Video view Container*/
private void showVideoViewContainer() {
Log.e("datashow", "showVideoViewContainer: "+vb);
vb.videoContainer.setVisibility(View.VISIBLE);
vb.imageView.setVisibility(View.GONE);
}
/*TODO hide video view Container*/
private void hideVideoViewContainer() {
vb.videoContainer.setVisibility(View.GONE);
vb.imageView.setVisibility(View.VISIBLE);
}
/*TODO show Toast*/
private void ShowToast(String msg) {
Toast.makeText(getContext(), msg, Toast.LENGTH_LONG).show();
}
}
`
My Adapter for slide fragment :
public class SliderAdapter extends FragmentStatePagerAdapter {
private String TAG = SliderAdapter.class.getSimpleName();
private ArrayList<PromotionalBanner> promotionalBannerArrayList;
public SliderAdapter(#NonNull FragmentManager fm,ArrayList<PromotionalBanner> promotionalBannerArrayList) {
super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
this.promotionalBannerArrayList = promotionalBannerArrayList;
}
#NonNull
#Override
public Fragment getItem(int position) {
PromotionalBanner promotionalBanner = DispolyActivity.promotionalBannerArrayList.get(position);
Log.e("positiondata", "dataPost: "+position );
return BannerFragment.getInstantFragment(promotionalBanner,
position,DispolyActivity.promotionalBannerArrayList);
}
#Override
public int getCount() {
return DispolyActivity.promotionalBannerArrayList.size();
}
#Override
public int getItemPosition(#NonNull Object object) {
return POSITION_UNCHANGED;
}
#Override
public void destroyItem(#NonNull ViewGroup container,
int position, #NonNull Object object) {
super.destroyItem(container, position, object);
Log.e("itemDestroy", "destroyItem: "+object );
}
/*TODO update Adapter Data*/
public void updateAdapter_Data(ArrayList<PromotionalBanner> promotionalBannersList){
this.promotionalBannerArrayList = promotionalBannersList;
// notifyDataSetChanged();
}
}

When working with the player, you need to carefully monitor the life cycle.
simpleExoPlayer.release();
simpleExoPlayer = null;
Try to use this not only in onPause(), try it also in onDestroy and onDestroyView.
If the problem goes away, then go through which life cycle methods are called and leave the release call in the right places
You have an issue not with memory, most likely you have an issue related to the codec.
Each device has its own limited number of codecs.
Some devices have more, some have less.
Therefore, on some devices, you can run the video more times, especially on emulators.

implementing Admob Native Advanced with RecyclerView but could not get the exact View Types

I already knew how the RecyclerView with different types of view works but this time I'm trying to add the Native Advance Admob ads to my RecyclerView. I followed theseYoutube Tutorials but there was an error printed to my logcat after the app crushed.
Logcat
java.lang.ClassCastException: com.google.android.gms.internal.ads.zzaeh cannot be cast to mgb.com.sdalyricsplus.Database.Entities.SongsEntity
at mgb.com.sdalyricsplus.newAdapters.DisplayItemAdapter.onBindViewHolder(DisplayItemAdapter.java:98)
at androidx.recyclerview.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:7065)
at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:7107)
at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:6012)
at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6279)
at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6118)
at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6114)
at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2303)
at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1627)
at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1587)
I reviewed the tutorial many times hoping that I've missed something that causes the error but it seems that I followed the tutorial correctly.
Here are my Codes
DisplayItemActivity
public class DisplayItemActivity extends AppCompatActivity{
public static final int NUMBER_OF_AD = 5;
AdLoader adLoader;
FastScrollRecyclerView recyclerView;
Global global;
RoomViewModel model;
List<Object> recyclerViewItems = new ArrayList<>();
List<UnifiedNativeAd> nativeAds = new ArrayList<>();
DisplayItemAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_songs);
MobileAds.initialize(this,"ca-app-pub-2493911630710964~1147957926");
recyclerView = findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setHasFixedSize(true);
global = (Global)getApplication();
model = ViewModelProviders.of(this).get(RoomViewModel.class);
adapter = new DisplayItemAdapter(getLayoutInflater());
recyclerView.setAdapter(adapter);
recyclerViewItems.addAll(model.selectAll());
loadNativeAds();
}
private void loadNativeAds() {
AdLoader.Builder builder = new AdLoader.Builder(this, getResources().getString(R.string.native_advance));
adLoader = builder.forUnifiedNativeAd(new UnifiedNativeAd.OnUnifiedNativeAdLoadedListener() {
#Override
public void onUnifiedNativeAdLoaded(UnifiedNativeAd unifiedNativeAd) {
nativeAds.add(unifiedNativeAd);
if (!adLoader.isLoading()) {
insertAdToList();
}
}
}).withAdListener(new AdListener() {
#Override
public void onAdFailedToLoad(int i) {
super.onAdFailedToLoad(i);
if (!adLoader.isLoading()) {
insertAdToList();
}
}
}).build();
adLoader.loadAds(new AdRequest.Builder().build(), NUMBER_OF_AD);
}
private void insertAdToList() {
int offset = recyclerViewItems.size() / (nativeAds.size() + 1);
int index = 0;
for (UnifiedNativeAd ad : nativeAds) {
recyclerViewItems.add(index,ad);
index = index + offset;
}
adapter.setList(recyclerViewItems);
}
}
And my Adapter
DisplayItemAdapter
public class DisplayItemAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private final int MENU_ITEM_VIEW_TYPE = 0;
private final int UNIFIED_NATIVE_AD_VIEW_TYPE = 1;
private List<Object> recyclerViewItems = new ArrayList<>();
private Global global;
private String searchTxt = "";
private final String newline = System.getProperty("line.separator");
private ClickSongItemListener clickSongItemListener;
private ChangeFavoriteListener changeFavoriteListener;
private LayoutInflater layoutInflater;
public DisplayItemAdapter(LayoutInflater layoutInflater) {
this.layoutInflater = layoutInflater;
}
public void setList(List<Object> list) {
this.recyclerViewItems = list;
notifyDataSetChanged();
}
#NonNull
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
global = (Global) ((Activity)parent.getContext()).getApplication();
switch (viewType) {
case UNIFIED_NATIVE_AD_VIEW_TYPE:
View adView = LayoutInflater.from(parent.getContext()).inflate(R.layout.native_ad_view,parent,false);
return new UnifiedNativeAdViewHolder(adView);
case MENU_ITEM_VIEW_TYPE :
default:
View songitem = LayoutInflater.from(parent.getContext()).inflate(R.layout.gospel_song_item,parent,false);
return new SongItemViewHolder(songitem);
}
}
#Override
public void onBindViewHolder(#NonNull RecyclerView.ViewHolder holder, int position) {
int viewType = getItemViewType(position);
switch (viewType) {
case UNIFIED_NATIVE_AD_VIEW_TYPE :
UnifiedNativeAdViewHolder nativeAdViewHolder = (UnifiedNativeAdViewHolder)holder;
UnifiedNativeAd unifiedNativeAd = (UnifiedNativeAd) recyclerViewItems.get(position);
// poulateNativeAdView(unifiedNativeAd,((UnifiedNativeAdViewHolder)holder).getAdView());
FrameLayout frameLayout =
nativeAdViewHolder.view.findViewById(R.id.ad_frame_placement);
UnifiedNativeAdView adView = (UnifiedNativeAdView) layoutInflater
.inflate(R.layout.ad_unified, null);
populateUnifiedNativeAdView(unifiedNativeAd, adView);
frameLayout.removeAllViews();
frameLayout.addView(adView);
break;
case MENU_ITEM_VIEW_TYPE :
default:
SongItemViewHolder songItemViewHolder = (SongItemViewHolder)holder;
setSongViews(songItemViewHolder, (SongsEntity)recyclerViewItems.get(position));
}
}
private void populateUnifiedNativeAdView(UnifiedNativeAd nativeAd, UnifiedNativeAdView adView) {
// Set the media view.
adView.setMediaView((MediaView) adView.findViewById(R.id.ad_media));
// Set other ad assets.
adView.setHeadlineView(adView.findViewById(R.id.ad_headline));
adView.setBodyView(adView.findViewById(R.id.ad_body));
adView.setCallToActionView(adView.findViewById(R.id.ad_call_to_action));
adView.setIconView(adView.findViewById(R.id.ad_app_icon));
adView.setPriceView(adView.findViewById(R.id.ad_price));
adView.setStarRatingView(adView.findViewById(R.id.ad_stars));
adView.setStoreView(adView.findViewById(R.id.ad_store));
adView.setAdvertiserView(adView.findViewById(R.id.ad_advertiser));
// The headline and mediaContent are guaranteed to be in every UnifiedNativeAd.
((TextView) adView.getHeadlineView()).setText(nativeAd.getHeadline());
adView.getMediaView().setMediaContent(nativeAd.getMediaContent());
// These assets aren't guaranteed to be in every UnifiedNativeAd, so it's important to
// check before trying to display them.
if (nativeAd.getBody() == null) {
adView.getBodyView().setVisibility(View.INVISIBLE);
} else {
adView.getBodyView().setVisibility(View.VISIBLE);
((TextView) adView.getBodyView()).setText(nativeAd.getBody());
}
if (nativeAd.getCallToAction() == null) {
adView.getCallToActionView().setVisibility(View.INVISIBLE);
} else {
adView.getCallToActionView().setVisibility(View.VISIBLE);
((Button) adView.getCallToActionView()).setText(nativeAd.getCallToAction());
}
if (nativeAd.getIcon() == null) {
adView.getIconView().setVisibility(View.GONE);
} else {
((ImageView) adView.getIconView()).setImageDrawable(
nativeAd.getIcon().getDrawable());
adView.getIconView().setVisibility(View.VISIBLE);
}
if (nativeAd.getPrice() == null) {
adView.getPriceView().setVisibility(View.INVISIBLE);
} else {
adView.getPriceView().setVisibility(View.VISIBLE);
((TextView) adView.getPriceView()).setText(nativeAd.getPrice());
}
if (nativeAd.getStore() == null) {
adView.getStoreView().setVisibility(View.INVISIBLE);
} else {
adView.getStoreView().setVisibility(View.VISIBLE);
((TextView) adView.getStoreView()).setText(nativeAd.getStore());
}
if (nativeAd.getStarRating() == null) {
adView.getStarRatingView().setVisibility(View.INVISIBLE);
} else {
((RatingBar) adView.getStarRatingView())
.setRating(nativeAd.getStarRating().floatValue());
adView.getStarRatingView().setVisibility(View.VISIBLE);
}
if (nativeAd.getAdvertiser() == null) {
adView.getAdvertiserView().setVisibility(View.INVISIBLE);
} else {
((TextView) adView.getAdvertiserView()).setText(nativeAd.getAdvertiser());
adView.getAdvertiserView().setVisibility(View.VISIBLE);
}
// This method tells the Google Mobile Ads SDK that you have finished populating your
// native ad view with this native ad.
adView.setNativeAd(nativeAd);
// Get the video controller for the ad. One will always be provided, even if the ad doesn't
// have a video asset.
VideoController vc = nativeAd.getVideoController();
// Updates the UI to say whether or not this ad has a video asset.
if (vc.hasVideoContent()) {
// videoStatus.setText(String.format(Locale.getDefault(),
// "Video status: Ad contains a %.2f:1 video asset.",
// vc.getAspectRatio()));
// Create a new VideoLifecycleCallbacks object and pass it to the VideoController. The
// VideoController will call methods on this object when events occur in the video
// lifecycle.
vc.setVideoLifecycleCallbacks(new VideoController.VideoLifecycleCallbacks() {
#Override
public void onVideoEnd() {
// Publishers should allow native ads to complete video playback before
// refreshing or replacing them with another ad in the same UI location.
super.onVideoEnd();
}
});
} else {
}
}
private void setSongViews(SongItemViewHolder viewHolder, SongsEntity note) {
Context context = viewHolder.itemView.getContext();
if (note.getMedia_extension().equals("audio")) {
Glide.with(context)
.load(R.drawable.music_icon)
.thumbnail(00.1f)
.into(viewHolder.iv_thumbnail);
}else if (note.getGenre().toLowerCase().contains("karaoke")) {
File file = new File(context.getExternalFilesDir(null)+"/.file"+note.getId());
if (file.exists()) {
Glide.with(context)
.setDefaultRequestOptions(new RequestOptions().placeholder(R.drawable.karaoke_icon))
.load(file)
.thumbnail(00.1f)
.into(viewHolder.iv_thumbnail);
}else {
Glide.with(context)
.setDefaultRequestOptions(new RequestOptions().placeholder(R.drawable.karaoke_icon))
.load(note.getMedia_url())
.thumbnail(00.1f)
.into(viewHolder.iv_thumbnail);
}
}else {
Glide.with(context)
.load(R.drawable.lyrics_icon)
.thumbnail(00.1f)
.into(viewHolder.iv_thumbnail);
}
viewHolder.title.setText(global.capitalize(note.getTitle()));
viewHolder.artist.setText(global.capitalize(note.getArtist()));
viewHolder.category.setText(note.getGenre());
viewHolder.favorite.setOnCheckedChangeListener(null);
viewHolder.favorite.setChecked(note.getFavorites());
viewHolder.views.setText(note.getFavorite_counter() <2 ? note.getFavorite_counter()+" heart" : note.getFavorite_counter()+" hearts");
String MY_ID = "JUntYdabhUh5XtMhfCIXXwNbsdW2";
if (!note.getUploader_id().equals(MY_ID))
Glide.with(context)
.setDefaultRequestOptions(new RequestOptions().placeholder(R.mipmap.sda_logo).diskCacheStrategy(DiskCacheStrategy.ALL))
.load(note.getUploader_photo_url())
.into(viewHolder.user_logo);
else
Glide.with(context)
.load(R.mipmap.sda_logo)
.into(viewHolder.user_logo);
String lyrics = note.getLyrics().toLowerCase();
String searchFilter = searchTxt.toLowerCase();
if (searchTxt.isEmpty()) {
viewHolder.phrase_end.setText(note.getLyrics());
viewHolder.phrase.setText("");
} else
if (lyrics.contains(searchFilter) && (lyrics.indexOf(searchFilter)) + searchTxt.length() <= lyrics.length()) {
viewHolder.phrase.setText(searchTxt);
String filter = note.getLyrics().substring(lyrics.indexOf(searchFilter) + searchFilter.length());
assert newline != null;
viewHolder.phrase_end.setText(filter.replaceAll(newline, " "));
}else {
viewHolder.phrase_end.setText(note.getLyrics());
viewHolder.phrase.setText("");
}
viewHolder.favorite.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (changeFavoriteListener != null) {
changeFavoriteListener.onChange(buttonView.getContext(),note,isChecked);
}
}
});
}
private void poulateNativeAdView(UnifiedNativeAd unifiedNativeAd, UnifiedNativeAdView adView) {
((TextView)adView.getHeadlineView()).setText(unifiedNativeAd.getHeadline());
((TextView)adView.getBodyView()).setText(unifiedNativeAd.getBody());
((TextView)adView.getCallToActionView()).setText(unifiedNativeAd.getCallToAction());
NativeAd.Image icon = unifiedNativeAd.getIcon();
if (icon == null) {
adView.getIconView().setVisibility(View.INVISIBLE);
}else {
((ImageView)adView.getIconView()).setImageDrawable(icon.getDrawable());
adView.getIconView().setVisibility(View.VISIBLE);
}
if (unifiedNativeAd.getPrice() == null) {
adView.getPriceView().setVisibility(View.INVISIBLE);
}else {
adView.getPriceView().setVisibility(View.VISIBLE);
((TextView)adView.getPriceView()).setText(unifiedNativeAd.getPrice());
}
if (unifiedNativeAd.getStore() == null) {
adView.getStoreView().setVisibility(View.INVISIBLE);
}else {
adView.getStoreView().setVisibility(View.VISIBLE);
((TextView)adView.getStoreView()).setText(unifiedNativeAd.getStore());
}
if (unifiedNativeAd.getStarRating() == null) {
adView.getStarRatingView().setVisibility(View.INVISIBLE);
}else {
adView.getStarRatingView().setVisibility(View.VISIBLE);
((RatingBar)adView.getStarRatingView()).setRating(unifiedNativeAd.getStarRating().floatValue());
}
if (unifiedNativeAd.getAdvertiser() == null) {
adView.getAdvertiserView().setVisibility(View.INVISIBLE);
}else {
adView.getAdvertiserView().setVisibility(View.VISIBLE);
((TextView)adView.getAdvertiserView()).setText(unifiedNativeAd.getAdvertiser());
}
adView.setNativeAd(unifiedNativeAd);
}
#Override
public int getItemCount() {
return recyclerViewItems.size();
}
public class SongItemViewHolder extends RecyclerView.ViewHolder {
TextView title, phrase,phrase_end;
TextView artist;
TextView category;
ToggleButton favorite;
LinearLayout layoutWrapper;
LinearLayout phrase_layout;
TextView views;
CircleImageView user_logo;
ImageView iv_thumbnail;
public SongItemViewHolder(#NonNull View itemView) {
super(itemView);
title = itemView.findViewById(R.id.text_view_title);
iv_thumbnail = itemView.findViewById(R.id.iv_thumbnail);
artist = itemView.findViewById(R.id.text_view_artist);
phrase = itemView.findViewById(R.id.phrase);
phrase_end = itemView.findViewById(R.id.phrase_end);
category = itemView.findViewById(R.id.text_view_category);
favorite = itemView.findViewById(R.id.toggleButton_favorite);
layoutWrapper = itemView.findViewById(R.id.layout_wrapper);
phrase_layout = itemView.findViewById(R.id.phrase_layout);
views = itemView.findViewById(R.id.tv_view_status);
user_logo = itemView.findViewById(R.id.user_logo);
}
}
private class UnifiedNativeAdViewHolder extends RecyclerView.ViewHolder {
private View view;
public UnifiedNativeAdViewHolder(View view) {
super(view);
this.view = view;
}
}
}
the logcat says that com.google.android.gms.internal.ads.zzaeh cannot be cast to mgb.com.sdalyricsplus.Database.Entities.SongsEntity and the error was pointed to the viewbindholder
case MENU_ITEM_VIEW_TYPE :
default:
SongItemViewHolder songItemViewHolder = (SongItemViewHolder)holder;
setSongViews(songItemViewHolder, (SongsEntity)recyclerViewItems.get(position)); // this line
my suspect is the viewtype. Maybe the view type was not correctly assigned.
I tried this code also but the error still there.
#Override
public int getItemViewType(int position) {
if (position % DisplayItemActivity.NUMBER_OF_AD == 0) {
return UNIFIED_NATIVE_AD_VIEW_TYPE;
}else {
return MENU_ITEM_VIEW_TYPE;
}
}
can someone help me to find the cause of the error?

You need to merge your SongItem and UnifiedNativeAd to become 1 single data source.
Make a new object class name SongAdsData to merge your Song object and Ads from Admob into 1 single object like below:
public class SongAdsData {
public int getType() {
return type;
}
public UnifiedNativeAd getAds() {
return ads;
}
public Post getSong() {
return Song;
}
public int type; // 1 is ads and 2 is songs
public UnifiedNativeAd ads;
public Song song; // here is ur Song object as usual
}
In your adapter, modify it as below:
public class SongAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private static final int UNIFIED_ADS_VIEW = 1;
private static final int SONG_ITEM_VIEW = 2;
private List<SongAdsData> songAdsDataList;
//here your onBindViewHolder,here your refer to item of `songAdsDataList`
// here your onCreateViewHolder
public void setSongAdsDataList(List<SongAdsData> songAdsDataForRecyclerView) {
this.songAdsDataList = songAdsDataForRecyclerView;
notifyDataSetChanged();
}
// Here is the function that insert the ads to RecyclerView
public void insertAdToRecyclerView(List<UnifiedNativeAds> nativeAds) {
int offset = songAdsDataList.size() / (nativeAds.size() + 1);
int index = 0;
for (UnifiedNativeAd ad : nativeAds) {
SongAdsData adsData = new SongAdsData();
adsData.song = null;
adsData.ads = ad;
adsData.type = 1; //1 for ads,2 for song
songAdsDataList.add(index,adsData);
index = index + offset;
}
notifyDataSetChanged();
}
#Override
public int getItemViewType (int position) {
if(songAdsDataList.get(position).getType() == 1){ // So here you compare the type of the object it the position
return UNIFIED_ADS;
}else{
return SONG_ITEM_VIEW;
}
}
#Override
public int getItemCount() {
if(songAdsDataList != null){
return songAdsDataList.size();
}else{
return 0;
}
}
}
So finally in your DisplayItemActivity
I not sure how you get your SongItem(your data from server or somewhere else),but the idea is transform your SongItem into SongAdsData that we created in the step one,
Example like this:
private void displaySongFromYourServer(List<Songs> songs) {
List<SongAdsData> songAdsDataList = new ArrayList<>();
for(Songs song : songs){
SongAdsData data = new SongAdsData();
data.ads = null;
data.song = song;
data.type = 2;
songAdsDataList.add(data);
}
songAdapter.setSongAdsDataList(songAdsDataList);
}
So by now,your Song item will become SongAdsData. At the same time, your UnifiedNativeAd object also need to transform become SongAdsData, therefore we need to
move all thing inside insertAdToList into SongAdapter(See the insertAdToRecyclerView in Song adapter above),so the it can refer to the same List of the recyclerView.
Therefore in your insertAdToList of DisplayItemActivity should become like this:
private void insertAdToList() {
songAdapter.insertAdsToRecyclerView(nativeAds); //called to the function inside songAdapter.
}
Hope you get the idea.

You need to override getItemViewType(int position) to check the instance of your Object in order to return the right view type:
#Override
public int getItemViewType(int position) {
if (this.recyclerViewItems.get(position) instanceof UnifiedNativeAd) {
return UNIFIED_NATIVE_AD_VIEW_TYPE;
}else {
return MENU_ITEM_VIEW_TYPE;
}
}

new item is not getting added in recyclerview?

i am scanning devices from a bluetooth and getting their data from their advertisement,so one of the device gives the data of other devices which is not in ranged from the mobile device,so i specifically filter the data of that device which i wanted to show in recycler view in automatically updating the rssi values.
let's say,
a device A which gives the data of 3 devices B,C,D containing their rssi values continuously,so what i want to show the list of device B,C,D with their rssi values which is changing continuously.
What i have done until now is scan that device "A",and extract the data of B and shown in recyclerview,but when another device i.e C's data comes in the old device i.e B got vanished and so on.
what i want is continuously changing data of B,C,D.
Adapter Class:-
public class ReapeaterDeviceAdapter extends RecyclerView.Adapter<ReapeaterDeviceAdapter.CryptoViewHolder> {
private ArrayList<RepeaterModel> data = new ArrayList<>();;
private Context mCtx;
public class CryptoViewHolder extends RecyclerView.ViewHolder {
private TextView mName, mPrice;
public CryptoViewHolder(View itemView) {
super(itemView);
mName = itemView.findViewById(R.id.txtName);
mPrice = itemView.findViewById(R.id.txtPrice);
}
}
public ReapeaterDeviceAdapter(Context ctx,ArrayList<RepeaterModel> data) {
this.mCtx = ctx;
this.data = data;
}
#Override
public CryptoViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.repeater_dev_data,parent, false);
return new CryptoViewHolder(itemView);
}
#Override
public void onBindViewHolder(CryptoViewHolder holder, int position) {
System.out.println("onBinder");
holder.mName.setText(data.get(position).macdev);
holder.mPrice.setText(String.valueOf(data.get(position).rssi));
}
#Override
public void onBindViewHolder(CryptoViewHolder holder, int position, List<Object> payloads) {
if (payloads.isEmpty()) {
//System.out.println("onbinder");
super.onBindViewHolder(holder, position, payloads);
} else {
Bundle o = (Bundle) payloads.get(0);
//System.out.println("in keyset");
for (String key : o.keySet()) {
if (key.equals("price")) {
holder.mName.setText(data.get(position).macdev);
holder.mPrice.setText(String.valueOf(data.get(position).rssi));
//holder.mPrice.setTextColor(Color.GREEN);
//this.notifyItemChanged(position);
}
}
}
}
#Override
public int getItemCount() {
return data.size();
}
public ArrayList<RepeaterModel> getData() {
return data;
}
public void setData(ArrayList<RepeaterModel> newData) {
MyDiffUtilCallBack diffCallBack = new MyDiffUtilCallBack(newData, this.data);
DiffUtil.DiffResult diffResult = DiffUtil.calculateDiff(diffCallBack);
//this.setData(newData);
// this.data=newData;
this.data.clear();
// this.data = newData;
this.data.addAll(newData);
diffResult.dispatchUpdatesTo(this);
//this.notifyItemRangeChanged(0, this.getItemCount());
//this.notifyDataSetChanged();
//System.out.println("Here");
}
}
Model Class:-
public String macdev;
public int rssi ;
public int imageid;
public RepeaterModel(String macdev, int rssi, int imageid) {
this.macdev = macdev;
this.rssi = rssi;
this.imageid = imageid;
}
public String getMacdev() {
return macdev;
}
public void setMacdev(String macdev) {
this.macdev = macdev;
}
public int getRssi() {
return rssi;
}
public void setRssi(int rssi) {
this.rssi = rssi;
}
public int getImageid() {
return imageid;
}
public void setImageid(int imageid) {
this.imageid = imageid;
}
#Override
public boolean equals(Object o) {
System.out.println("in equals");
if (this == o) return true;
if (!(o instanceof RepeaterModel)) return false;
RepeaterModel that = (RepeaterModel) o;
return getRssi() == that.getRssi() &&
getImageid() == that.getImageid() &&
getMacdev().equals(that.getMacdev());
}
#Override
public int hashCode() {
return Objects.hash(getMacdev(), getRssi(), getImageid());
}
/*#Override
public int hashCode() {
int result = Integer.valueOf(rssi);
// result = result + (imageid != 0 ? imageid.hashCode() : 0);
result = result + rssi.hashCode();
System.out.println("hash");
return result;
}*/
}
Diffutilcallback :-
ArrayList<RepeaterModel> newList;
ArrayList<RepeaterModel> oldList;
public MyDiffUtilCallBack(ArrayList<RepeaterModel> newList, ArrayList<RepeaterModel> oldList) {
this.newList = newList;
this.oldList = oldList;
}
#Override
public int getOldListSize() {
return oldList != null ? oldList.size() : 0;
}
#Override
public int getNewListSize() {
return newList != null ? newList.size() : 0;
}
#Override
public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
if(newList.get(newItemPosition).getMacdev().equals(oldList.get(oldItemPosition).getMacdev()))
{
// Log.d("itemsame","in same");
return true;
}
else {
// Log.d("itemsame", "not same");
}
return false;
}
#Override
public boolean areContentsTheSame(int oldItemPosition, int newItemPosition)
{
//System.out.println("in content same");
final RepeaterModel oldRepeater = oldList.get(oldItemPosition);
final RepeaterModel newRepeater = newList.get(newItemPosition);
if(oldRepeater.getRssi()!=(newRepeater.getRssi()))
{
//Log.d("item contenets","content different");
return false;
}
//Log.d("item contenets","content same");
return true;
}
#Nullable
#Override
public Object getChangePayload(int oldItemPosition, int newItemPosition) {
RepeaterModel newModel = newList.get(newItemPosition);
RepeaterModel oldModel = oldList.get(oldItemPosition);
//System.out.println("getchange");
Bundle diff = new Bundle();
//if (newModel.getMacdev().equals(oldModel.getMacdev()))
//{
//System.out.println("getchange");
if (newModel.getRssi()!=(oldModel.getRssi())) {
diff.putInt("price", newModel.getRssi());
}
if (diff.size() == 0) {
return null;
}
// }
return diff;
//return super.getChangePayload(oldItemPosition, newItemPosition);
}
}```
Activity Class:-
public class RepeaterAdvertise extends AppCompatActivity {
private static BluetoothAdapter mBluetoothAdapter;
private static BluetoothLeScanner mLEScanner;
private static final int PERMISSION_REQUEST_COARSE_LOCATION = 1;
private static boolean mScanning;
private static Handler mHandler;
private static final long SCAN_TIMEOUT = 20000;
public DevData data;
public Button cc;
//List<BluetoothDevice> mBluetoothDevice;
RecyclerView recyclerView;
ReapeaterDeviceAdapter reapeaterDeviceAdapter;
ArrayList<RepeaterModel> modelArrayList;// = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_repeater_advertise);
modelArrayList = new ArrayList<>();
recyclerView = (RecyclerView) findViewById(R.id.devdata);
//dummyData();
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
reapeaterDeviceAdapter = new ReapeaterDeviceAdapter(RepeaterAdvertise.this, modelArrayList);
recyclerView.setAdapter(reapeaterDeviceAdapter);
mHandler = new Handler();
final Intent intent = getIntent();
data = (DevData) intent.getSerializableExtra(SINGLE_DEV_DATA);
}
#Override
protected void onPause() {
super.onPause();
scanLeDevice(false,data.getMac_address());
}
#Override
protected void onResume() {
super.onResume();
scanLeDevice(true,data.getMac_address());
}
private void scanLeDevice(final boolean enable,String mac) {
if (enable) { // enable set to start scanning
// Stops scanning after a pre-defined scan period.
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
if(mScanning) {
mScanning = false;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
//noinspection deprecation
mBluetoothAdapter.stopLeScan(mLeScanCallback);
} else {
mLEScanner.stopScan(mScanCallback);
}
invalidateOptionsMenu();
}
}
}, SCAN_TIMEOUT);
mScanning = true;
UUID[] motorServiceArray = {PSoCBleRobotService.getMotorServiceUUID()};
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
//noinspection deprecation
mBluetoothAdapter.startLeScan(motorServiceArray, mLeScanCallback);
} else { // New BLE scanning introduced in LOLLIPOP
ScanSettings settings;
List<ScanFilter> filters;
mLEScanner = mBluetoothAdapter.getBluetoothLeScanner();
settings = new ScanSettings.Builder()
.setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
.build();
filters = new ArrayList<>();
//ScanFilter filter = new ScanFilter.Builder().setServiceUuid(PUuid).build();
//ScanFilter filter = new ScanFilter.Builder().setManufacturerData(89,new byte[] {}).build();
ScanFilter filter = new ScanFilter.Builder().setDeviceAddress(mac).build();
filters.add(filter);
if(mLEScanner==null)
{
mLEScanner = mBluetoothAdapter.getBluetoothLeScanner();
}
mLEScanner.startScan(filters, settings, mScanCallback);
}
} else { // enable set to stop scanning
if(mScanning) {
mScanning = false;
if (Build.VERSION.SDK_INT < 21) {
//noinspection deprecation
mBluetoothAdapter.stopLeScan(mLeScanCallback);
} else {
mLEScanner.stopScan(mScanCallback);
}
}
}
invalidateOptionsMenu();
}
private final BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {
#Override
public void onLeScan(final BluetoothDevice device, int rssi, final byte[] scanRecord) {
runOnUiThread(new Runnable() {
#Override
public void run()
{
byte[] haha = scanRecord;
/* if(!mBluetoothDevice.contains(device))
{
//only add new devices
mBluetoothDevice.add(device);
mBleName.add(device.getName());
mBleArrayAdapter.notifyDataSetChanged(); // Update the list on the screen
}*/
}
});
}
};
public static String SbytesToHex(SparseArray<byte[]> bytes) {
StringBuilder builder = new StringBuilder();
byte[] dd = bytes.valueAt(0);
for (byte b: dd)
{
builder.append(String.format("%02x", b));
}
//System.out.println( dd.length);
return builder.toString();
}
public final ScanCallback mScanCallback = new ScanCallback() {
#Override
public void onScanResult(int callbackType, ScanResult result) {
ScanRecord scanRecord = result.getScanRecord();
// mBluetoothDevice.add(result.getDevice());
SparseArray<byte[]> dataw = scanRecord.getManufacturerSpecificData();
if (dataw.size() > 0) {
//populate_devData(SbytesToHex(dataw));
String data = SbytesToHex(dataw);
ArrayList<RepeaterModel> repeaterModels= new ArrayList<>();
int rssi = Integer.valueOf(data.substring(12, 14), 16) - 256;
repeaterModels.add(new RepeaterModel(data.substring(0, 12), rssi, 1));
insert(repeaterModels);
} else if (false) {
//alertDialog.dismiss();
final Intent intent = new Intent(RepeaterAdvertise.this, ConfigurationView.class);
intent.putExtra(EXTRAS_BLE_ADDRESS, data.getMac_address());
intent.putExtra(EXTRAS_BLE_NAME, data.getName());
intent.putExtra(SINGLE_DEV_DATA, data.getDev_data());
scanLeDevice(false, data.getMac_address());
//mconfig=false;
startActivity(intent);
}
}
};
public void insert(ArrayList<RepeaterModel> rr)
{
modelArrayList.addAll(rr);
reapeaterDeviceAdapter.setData(rr);
}
}

add this line in insert function reapeaterDeviceAdapter.notifyDataSetChanged();
public void insert(ArrayList<RepeaterModel> rr){
modelArrayList.addAll(rr);
reapeaterDeviceAdapter.setData(rr);
reapeaterDeviceAdapter.notifyDataSetChanged();
}

How to show multiple data source data in single recycle view or adapter using LazyLoading?

The above image is a simple design that I want to develop.
I have four type of different data with different view type like the below image enter image description here. but that is not a problem. problem is the data will come from different API with lazy loading like when user scroll the list from recycle view it will grab the data from the server. My question is how to combine them in a single adapter because I need to use lazy loading .so I can't load whole data at a time so I need to call the different type of API like goal-list API, appraisal API, post API etc. When user scroll. anyone can give me an idea with example. How can I handle that? Also when user will scroll it will call another api likeCount and comment count also. Currently, In my, I am calling single API and show that in the single recycle view. Currently, I am using android architecture component LiveData
Fragment :
public class NewsFeedFragment extends FcaFragment {
private View view;
private RecyclerView postRecyclerView;
private PostsAdapter postsAdapter;
private List<Post> posts;
private TimelineViewModel timelineViewModel;
private ImageView addPostView;
private View addPostPanel;
private long lastApiCallTime;
private SwipyRefreshLayout swipeRefresh;
private long lastScroolItemInPost= 0;
public NewsFeedFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if(lastScroolItemInPost < 1) {
initViewModel(1 , 0 , true);
lastScroolItemInPost = 1;
}else {
initViewModel(((int) lastScroolItemInPost + 5), lastScroolItemInPost , true);
lastScroolItemInPost += 5;
}
final LinearLayoutManager linearLayoutManager = new LinearLayoutManager(ownerActivity);
view = inflater.inflate(R.layout.fragment_news_feed, container, false);
postRecyclerView = (RecyclerView) view.findViewById(R.id.postRecyclerView);
postRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
#Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
super.onScrollStateChanged(recyclerView, newState);
}
#Override
public void onScrolled(RecyclerView postRecyclerView, int dx, int dy) {
super.onScrolled(postRecyclerView, dx, dy);
int lastVisiableItemInPostList = linearLayoutManager.findLastVisibleItemPosition();
if(lastScroolItemInPost < lastVisiableItemInPostList)
{
if(lastScroolItemInPost == 1)
{
initViewModel((int) (lastScroolItemInPost + 2), ( lastScroolItemInPost - 2 ) , false);
lastScroolItemInPost += 2;
}else{
initViewModel((int) (lastScroolItemInPost + 2), ( lastScroolItemInPost - 2 ) , false );
lastScroolItemInPost += 2;
}
}
}
});
posts = new ArrayList<>();
postRecyclerView.setLayoutManager(linearLayoutManager);
postsAdapter = new PostsAdapter(ownerActivity,posts,timelineViewModel);
postRecyclerView.setAdapter(postsAdapter);
swipeRefresh = (SwipyRefreshLayout) view.findViewById(R.id.swipeRefresh);
swipeRefresh.setOnRefreshListener(new SwipyRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh(SwipyRefreshLayoutDirection direction) {
if(direction == SwipyRefreshLayoutDirection.TOP){
timelineViewModel.fetchPosts2();
}
if(direction == SwipyRefreshLayoutDirection.BOTTOM){
timelineViewModel.fetchPosts();
}
}
});
return view;
}
private void initViewModel(int lastVisiableItemInPostList , long lastScroolItemInPost , boolean isFirstTimeOpenFeedFragment) {
TimelineViewModel.Factory factory = new TimelineViewModel.Factory(UserPreferences.getToken(ownerActivity), TaskUtils.getMySelfContact(ownerActivity));
timelineViewModel = ViewModelProviders.of(this,factory).get(TimelineViewModel.class);
timelineViewModel.getPostList().observe(this, new Observer<List<Post>>() {
#Override
public void onChanged(#Nullable List<Post> posts) {
postsAdapter.setPostList(posts);
swipeRefresh.setRefreshing(false);
}
});
timelineViewModel.getPostDeleted().observe(this, new Observer<Boolean>() {
#Override
public void onChanged(#Nullable Boolean aBoolean) {
if(aBoolean){
postsAdapter.setPostList(Post.getAll());
}
}
});
timelineViewModel.init( lastVisiableItemInPostList , lastScroolItemInPost ,isFirstTimeOpenFeedFragment);
}
}
ViewModel :
public class TimelineViewModel extends FCViewModel implements PostDetailsDownloadManager.PostDetailDownloadedListener,OnContactReceivedListner{
public TimelineViewModel(String token,Contact user){
super(token);
this.user = user;
post = new MutableLiveData<>();
postDeleted = new MutableLiveData<>();
}
public void init(int lastVisiableItemInPostList , long lastScroolItemInPost , boolean isFirstTimeOpenFeedFragment){
repository =
//postDetailsDownloadManager = ServiceLocator.getServiceLocator().postDetailsDownloadManager;
likePostDownloadManager = ServiceLocator.getServiceLocator().likePostDownloadManager;
likePostDownloadManager.setPostDetailDownloadedListener(new DataDownloadManager.DataDownloadedListener<LikePostTouple>() {
#Override
public void onDataDownloaded(List<LikePostTouple> dataTouple) {
TimelineViewModel.this.post.setValue(Post.getAll());
}
#Override
public void onSingleDataDownloaded(LikePostTouple dataTouple) {
}
});
postDetailDownloadManager = ServiceLocator.getServiceLocator().postDetailDownloadManager;
postDetailDownloadManager.setPostDetailDownloadedListener(new DataDownloadManager.DataDownloadedListener<PostTouple>() {
#Override
public void onDataDownloaded(List<PostTouple> dataTouple) {
TimelineViewModel.this.post.setValue(Post.getAll());
}
#Override
public void onSingleDataDownloaded(PostTouple dataTouple) {
}
});
post.setValue(Post.getAll());
if(isFirstTimeOpenFeedFragment)
{
fetchPosts2();
}
try {
if(Post.getAll().size() > 0)
{
List<Post> tempPosts = Post.getAll();
List<Post> passList = tempPosts.subList( (int) lastScroolItemInPost ,lastVisiableItemInPostList);
fetchLikesOfPosts(passList);
}else{
fetchLikesOfPosts(Post.getAll());
}
} catch (Exception e) {
e.printStackTrace();
}
Log.d("Testing Injecting", repository.toString());
}
public LiveData<List<Post>> getPostList() {
return post;
}
public MutableLiveData<Boolean> getPostDeleted() {
return postDeleted;
}
boolean isContactFetched = false;
public void fetchPosts(){
if(Contact.getAll().size() < 1){
fetchContacts();
return;
}
Map<String,Object> requestData = new HashMap<>();
requestData.put("type",1);
requestData.put("cpid",Post.getLastPid());
isDataLoading = true;
repository.getData(new Repository.DataFetchedListener<List<Post>>() {
#Override
public void onDataFetched(List<Post> posts) {
isDataLoading = false;
Log.d("fetched posts",""+posts.size());
post.setValue(Post.getAll());
fetchPostDetails(posts);
if(posts.size() > 0){
fetchLikesOfPosts(posts);
}
}
},requestData);
}
private boolean isDataLoading = false;
public void fetchPosts2(){
if(Contact.getAll().size() < 1){
fetchContacts();
return;
}
Map<String,Object> requestData = new HashMap<>();
requestData.put("type",2);
requestData.put("cpid", Post.getFirstPid()); // cpid means cursor pid
isDataLoading = true;
repository.getData(new Repository.DataFetchedListener<List<Post>>() {
#Override
public void onDataFetched(List<Post> posts) {
isDataLoading = false;
Log.d("fetched posts",""+posts.size());
post.setValue(Post.getAll());
fetchPostDetails(posts);
if(posts.size() > 0){
fetchLikesOfPosts(posts);
}
}
},requestData);
}
public boolean isDataLoading() {
return isDataLoading;
}
private void fetchContacts() {
contactRepository.getData(new Repository.DataFetchedListener<List<Contact>>() {
#Override
public void onDataFetched(List<Contact> data) {
if(data.size()>0 && !isContactFetched) {
fetchPosts2();
isContactFetched = true;
}
}
},null);
}
#NonNull
private PostTouple getPostToubleFromPost(Post post) throws JSONException {
Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();
String json = gson.toJson(post);
JSONObject postJson = new JSONObject(json);
return new PostTouple(postJson,post.getPid());
}
#NonNull
private LikePostTouple getLkePostToupleFromPost(Post post) throws JSONException {
Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();
String json = gson.toJson(post);
JSONObject postJson = new JSONObject(json);
return new LikePostTouple(postJson,post.getPid());
}
public void giveLike(String token, final long pid){
Map<String,Object> requestData = new HashMap<>();
requestData.put("token",token);
requestData.put("pid",Long.toString(pid));
likeRepository.postData(new Repository.DataFetchedListener<Post>() {
#Override
public void onDataFetched(Post data) {
Log.d("Like post", data.toString());
Post post = getPostById(pid);
post.setLikes(data.getLikes());
post.setComments(data.getComments());
TimelineViewModel.this.post.setValue(TimelineViewModel.this.post.getValue());
fetchLikesOfLikedPost(data);
}
},requestData);
}
private void fetchLikesOfLikedPost(Post data) {
try {
likePostDownloadManager.addItemInQueue(getLkePostToupleFromPost(data));
likePostDownloadManager.startDownload();
} catch (JSONException e) {
e.printStackTrace();
}
}
private Post getPostById(long pid){
List<Post> posts = post.getValue();
for(Post post : posts){
if(post.getPid()==pid){
return post;
}
}
return null;
}
public Contact getSenderContactFromComment(Post post) {
if(post.getPqrc().equals(user.getUserId())){
return user;
}
Contact contact = Contact.getByUserId(post.getPqrc());
return contact;
}
public String getDescriptionForType5(Post post,String message){
try {
PostDetail postDetail = PostDetail.getByPostId(post.getPid());
if(postDetail!=null) {
String qrc = JSonUtils.qrcFromCntOfPostDetails(postDetail.getContent());
int sid = JSonUtils.skillidFromCntOfPostDetails(postDetail.getContent());
if (qrc == null || sid == 0) {
return "";
}
SkillDb skill = SkillDb.getBySId(Integer.toString(sid));
Contact contact = getPosterContact(post.getPqrc());
return contact.getName() + " " + message + " " + skill.getSkillName() + ".";
}
return "";
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
public String getDescriptionForPost(Post post, String message){
if(post.getCtype()==1){
return post.getDescr();
}
if(post.getCtype() == 2){
String postDetail = getContent(post);
if (postDetail != null) return Html.fromHtml(""+postDetail+"").toString();
}
if(post.getCtype()==5){
return getDescriptionForType5(post, message);
}
return "";
}
#Nullable
public String getContent(Post post) {
PostDetail postDetail = PostDetail.getByPostId(post.getPid());
if(postDetail!=null){
return postDetail.getContent();
}
return null;
}
public Contact getPosterContact(String qrc){
try {
String userqrc = user.getUserId();
if (userqrc.equals(qrc)) {
return user;
}
}catch (Exception e){
e.printStackTrace();
}
try {
return Contact.getByUserId(qrc);
}catch (Exception e){
e.printStackTrace();
}
return null;
}
public void fetchUrlPreview(String url, final UrlMetaDataFetchListener metaDataFetchListener){
String modifiedUrl = !url.contains("http://")&&!url.contains("https://")? "http://"+url : url;
TextCrawler textCrawler = new TextCrawler();
LinkPreviewCallback linkPreviewCallback = new LinkPreviewCallback() {
#Override
public void onPre() {
}
#Override
public void onPos(SourceContent sourceContent, boolean b) {
String imageUrl = sourceContent.getImages().isEmpty()? "" : sourceContent.getImages().get(0);
metaDataFetchListener.onMetaDataFetched(sourceContent.getTitle(),sourceContent.getDescription(), imageUrl);
}
};
textCrawler.makePreview(linkPreviewCallback, modifiedUrl,1);
}
public interface UrlMetaDataFetchListener{
void onMetaDataFetched(String title, String description, String imageUrl);
}
#Override
public void onPostDownloaded(PostTouple postTouple) {
this.post.setValue(Post.getAll());
}
#Override
public void onContactsReceived() {
fetchPosts();
}
public void deletePost(long pid) {
Map<String, Object> requestData = new HashMap<>();
requestData.put("token",token);
requestData.put("pid",pid);
repository.postData(new Repository.DataFetchedListener<Post>() {
#Override
public void onDataFetched(Post data) {
postDeleted.setValue(data!=null);
}
},requestData);
}
public boolean isMyPost(Post post){
return user.getUserId().equals(post.getPqrc());
}
public static class Factory extends ViewModelProvider.NewInstanceFactory {
private String token;
private Contact user;
public Factory(String token,Contact user) {
this.token = token;
this.user = user;
}
#Override
public <T extends ViewModel> T create(Class<T> modelClass) {
return (T) new TimelineViewModel(token,user);
}
}
}
Adapter :
public class PostsAdapter extends RecyclerView.Adapter {
private Context context;
private List<Post> postList;
private int[] badges = {R.drawable.badge1, R.drawable.badge2, R.drawable.badge3};
private List<Integer> randomNumbers = Utils.getRandomNumberList(2,true);
private ArrayDeque<Integer> randomQueue = new ArrayDeque<>(randomNumbers);
private static Map<Long,URLPreview> urlPreviewMap = new HashMap<>();
private TimelineViewModel timelineViewModel;
public PostsAdapter(Context context, List<Post> postList, TimelineViewModel timelineViewModel){
super();
this.context = context;
this.postList = postList;
this.timelineViewModel = timelineViewModel;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.post_item_layout, null);
PostViewHolder postViewHolder = new PostViewHolder(view);
postViewHolder.setIsRecyclable(false);
return postViewHolder;
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
final Post post = postList.get(position);
final PostViewHolder postViewHolder = (PostViewHolder) holder;
final String postDetail = timelineViewModel.getDescriptionForPost(post,context.getResources().getString(R.string.postType5message));
setPostDescription(post, postViewHolder, postDetail);
handlePreviewVisibility(post, postViewHolder);
postViewHolder.setLikes(""+post.getLikes()+" Likes");
postViewHolder.setCommentCount("" + post.getComments() + " Comments");
postViewHolder.setSupDescription("Posted By System");
int randomNumber = getRandomNumber();
postViewHolder.setBadgeIcon(badges[randomNumber]);
setPostLikedIndicator(post, postViewHolder);
postViewHolder.getLikeButtonWrapper().setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
giveLikeToPost(post);
if(post.getIsLiked() == 0) {
post.setLikes(post.getLikes() + 1);
postViewHolder.setLikes("" + post.getLikes() + " Likes");
post.setIsLiked(1);
setPostLikedIndicator(post, postViewHolder);
}
}
});
postViewHolder.getCommentPanel().setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
CommentPostFragment fragment = CommentPostFragment.GetInstance(post.getPid());
ViewUtils.launchFragmentKeepingInBackStack(context,fragment);
}
});
Contact contact = timelineViewModel.getPosterContact(post.getPqrc());
if(contact!=null && TaskUtils.isNotEmpty(contact.getImageToken())){
Utils.setImageToImageView(postViewHolder.getPosterImage(),timelineViewModel.getToken(),contact.getImageToken());
postViewHolder.getPosterNameTextView().setText(contact.getName());
}
postViewHolder.getPostingDate().setText(Utils.getDateFromMilliseconds(post.getdC()));
if(post.getCtype() != 3)
{
postViewHolder.contentImage.setVisibility(View.GONE);
postViewHolder.fullScreenIndicatorIcon.setVisibility(View.GONE);
}
if(post.getCtype() == 3){
setContentOfType3(post, postViewHolder);
}
}
#Override
public void onViewRecycled(RecyclerView.ViewHolder holder) {
super.onViewRecycled(holder);
PostViewHolder viewHolder = (PostViewHolder) holder;
viewHolder.pTitle.setText("");
viewHolder.pDescription.setText("");
viewHolder.pImage.setImageDrawable(null);
}
private void handlePreviewVisibility(Post post, PostViewHolder postViewHolder) {
if(post.getCtype()==2){
postViewHolder.preview.setVisibility(View.VISIBLE);
}else{
postViewHolder.preview.setVisibility(View.GONE);
}
}
private void handleShowingOptionsIcon(Post post, PostViewHolder postViewHolder) {
if(post.getCtype()!=5 && timelineViewModel.isMyPost(post)){
postViewHolder.options.setVisibility(View.VISIBLE);
}else{
postViewHolder.options.setVisibility(View.GONE);
}
}
private void giveLikeToPost(Post post) {
post.setLikes(post.getLikes()+1);
post.setIsLiked(1);
//notifyDataSetChanged();
timelineViewModel.giveLike(UserPreferences.getToken(context),post.getPid());
}
private void setPostLikedIndicator(Post post, PostViewHolder postViewHolder) {
if(post.getIsLiked()==1) {
postViewHolder.getLikeButton().setImageDrawable(ResourcesCompat.getDrawable(context.getResources(), R.drawable.ic_like_red, null));
}else{
postViewHolder.getLikeButton().setImageDrawable(ResourcesCompat.getDrawable(context.getResources(), R.drawable.ic_like_filled, null));
}
}
private void setPostDescription(final Post post, final PostViewHolder postViewHolder, final String postDetail) {
if(post.getCtype()==2){
String postDescription = "<p>"+ post.getDescr()+"</p>";
postViewHolder.description.setText( Html.fromHtml(postDescription +""+postDetail+"") );
postViewHolder.descriptionContainer.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String url = !postDetail.contains("http://")&&!postDetail.contains("https://")? "http://"+postDetail : postDetail;
Uri uri = Uri.parse(url);
context.startActivity(new Intent(Intent.ACTION_VIEW,uri));
}
});
URLPreview urlPreview = null;
if((urlPreview=urlPreviewMap.get(post.getPid()))==null) {
timelineViewModel.fetchUrlPreview(postDetail, new TimelineViewModel.UrlMetaDataFetchListener() {
#Override
public void onMetaDataFetched(String title, String description, String imageUrl) {
showURLPreview(title, description, imageUrl, postViewHolder);
urlPreviewMap.put(post.getPid(),new URLPreview(title,description,imageUrl));
}
});
}else {
showURLPreview(urlPreview.getTitle(),urlPreview.getDescription(),urlPreview.getImageUrl(),postViewHolder);
}
}else if(post.getCtype() == 3)
{
String postDescription = post.getDescr();
postViewHolder.description.setText(postDescription);
}
else {
postViewHolder.setDescription(postDetail);
}
}
private void initImageClickListener(final ImageView imageView, final String pictureLink) {
imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
List<String> pictureLinks = new ArrayList<String>();
pictureLinks.add(pictureLink);
int[] screenLocation = new int[2];
imageView.getLocationOnScreen(screenLocation);
ImagePagerFragment imagePagerFragment = ImagePagerFragment.newInstance(pictureLinks, 0, screenLocation, imageView.getWidth(), imageView.getHeight());
ViewUtils.launchPopUpFragmentUpdated(context, imagePagerFragment);
}
});
}
private void showURLPreview(String title, String description, String imageUrl, PostViewHolder postViewHolder) {
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(!TaskUtils.isEmpty(imageUrl)) {
Picasso.with(context)
.load(imageUrl)
.into(postViewHolder.pImage);
}
view.findViewById(R.id.description);
postViewHolder.pTitle.setText(title);
postViewHolder.pDescription.setText(description);
}
#Override
public int getItemCount() {
return postList.size();
}
private int getRandomNumber(){
if(!randomQueue.isEmpty()){
return randomQueue.poll();
}
randomQueue = new ArrayDeque<>(randomNumbers);
return randomQueue.poll();
}
public void setPostList(List<Post> postList) {
this.postList = postList;
notifyDataSetChanged();
Log.d("Data rec", postList.size()+"");
}
class PostViewHolder extends RecyclerView.ViewHolder implements PopupMenu.OnMenuItemClickListener {
}
public void setLikes(String likes) {
this.likes.setText(likes);
}
public void setCommentCount(String commentCount)
{
this.commentCount.setText(commentCount);
}
public void setDescription(String description){
this.description.setText(description);
}
public void setSupDescription(String subDescription){
this.supDescription.setText(subDescription);
}
public void setBadgeIcon(int resID){
Utils.setImageViewFromResource(badgeIcon,resID);
}
public ImageView getLikeButton() {
return likeButton;
}
public RelativeLayout getLikeButtonWrapper()
{
return likeButtonWrapper;
}
public ImageView getCommentButton() {
return commentButton;
}
public ImageView getPosterImage() {
return posterImage;
}
public TextView getPosterNameTextView() {
return posterNameTextView;
}
public TextView getPostingDate() {
return postingDate;
}
public RelativeLayout getCommentPanel() {
return commentPanel;
}
#Override
public boolean onMenuItemClick(MenuItem item) {
timelineViewModel.deletePost(postList.get(getAdapterPosition()).getPid());
return false;
}
}
}

Android YouTubeSupportFragment player returning null

I have been working on a personal Android project related to YouTube based off a demo, however I have ran into an issue that I can't seem to figure out (or understand).
The original code uses a basic PlayerView whereas this uses a YouTubePlayerSupportFragment.
The app plays videos just fine as long as player.cueVideo("VIDEOID") is inside onInitializationSuccess. But will crash with a NullPointerException on player variable if placed inside the method playVideoAtSelection.
** The original code had the following line inside onInitializationSuccess, however for me it's telling me that player cannot be resolved. **
I've never seen this used like this before so it has been throwing me off.
this.player = player;
MainActivity.java code:
public class MainActivity extends FragmentActivity implements
AdapterView.OnItemClickListener,
AdapterView.OnItemSelectedListener {
private final String LOG_TAG = MainActivity.class.getSimpleName();
AutoCompleteTextView atvSearch;
public String thumbnailURL;
public String mediaTitle;
public String videoID;
private TextView autoItem;
private ImageView autoImage;
private ArrayList<ArrayList<String>> resultList;
private static final String KEY_CURRENTLY_SELECTED_ID = "currentlySelectedId";
private YouTubePlayer mPlayer;
private YouTubePlayer player = null;
private ArrayAdapter<ListEntry> videoAdapter;
private Spinner videoChooser;
private MyPlayerStateChangeListener playerStateChangeListener;
private int currentlySelectedPosition;
private String currentlySelectedId;
private static final ListEntry[] ENTRIES = {
new ListEntry("Androidify App", "irH3OSOskcE", false),
new ListEntry("Chrome Speed Tests", "nCgQDjiotG0", false),
new ListEntry("Playlist: Google I/O 2012", "PL56D792A831D0C362", true)};
#Override
protected void onCreate(Bundle savedInstanceState) {
Log.v(LOG_TAG, "IN onCreate!");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.fragment_playlist, new PlaylistFragment())
.commit();
}
//YouTubePlayerFragment playerFragment = YouTubePlayerFragment.newInstance("irH3OSOskcE");
//getSupportFragmentManager().beginTransaction().replace(R.id.youtube_fragment, playerFragment).commit();
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
YouTubePlayerSupportFragment youTubePlayerFragment = new YouTubePlayerSupportFragment();
fragmentTransaction.add(R.id.youtube_fragment, youTubePlayerFragment);
fragmentTransaction.commit();
youTubePlayerFragment.initialize(DeveloperKey.DEVELOPER_KEY, new OnInitializedListener() {
#Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player, boolean wasRestored) {
mPlayer = player;
mPlayer.setPlayerStateChangeListener(playerStateChangeListener);
mPlayer.setPlayerStyle(YouTubePlayer.PlayerStyle.MINIMAL);
if (!wasRestored) {
playVideoAtSelection();
}
}
#Override
public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
//error
}
});
AutoCompleteTextView autoCompView = (AutoCompleteTextView) findViewById(R.id.atv_search);
autoCompView.setAdapter(new QueryAutoCompleteAdapter(this, R.layout.list_item));
autoCompView.setOnItemClickListener(this);
playerStateChangeListener = new MyPlayerStateChangeListener();
videoChooser = (Spinner) findViewById(R.id.video_chooser);
videoAdapter = new ArrayAdapter<ListEntry>(this, android.R.layout.simple_spinner_item, ENTRIES);
videoAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
videoChooser.setOnItemSelectedListener(this);
videoChooser.setAdapter(videoAdapter);
}
public void playVideoAtSelection() {
if (mPlayer == null) {
Log.v(LOG_TAG, "WE DUN GOOFD PLAYER IS NULL... ");
}
player.cueVideo("nCgQDjiotG0");
Log.v(LOG_TAG, "WE HAVE ENTERED PLAYVIDEOATSELECTION... ");
/*ListEntry selectedEntry = videoAdapter.getItem(currentlySelectedPosition);
if (selectedEntry.id != currentlySelectedId && player != null) {
currentlySelectedId = selectedEntry.id;
if (selectedEntry.isPlaylist) {
player.cuePlaylist(selectedEntry.id);
} else {
player.cueVideo(selectedEntry.id);
}
}*/
}
#Override
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
currentlySelectedPosition = pos;
playVideoAtSelection();
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
// Do nothing.
}
#Override
protected void onSaveInstanceState(Bundle state) {
super.onSaveInstanceState(state);
state.putString(KEY_CURRENTLY_SELECTED_ID, currentlySelectedId);
}
#Override
protected void onRestoreInstanceState(Bundle state) {
super.onRestoreInstanceState(state);
currentlySelectedId = state.getString(KEY_CURRENTLY_SELECTED_ID);
}
private final class MyPlayerStateChangeListener implements YouTubePlayer.PlayerStateChangeListener {
String playerState = "UNINITIALIZED";
#Override
public void onLoading() {
playerState = "LOADING";
}
#Override
public void onLoaded(String videoId) {
playerState = String.format("LOADED %s", videoId);
}
#Override
public void onAdStarted() {
playerState = "AD_STARTED";
}
#Override
public void onVideoStarted() {
playerState = "VIDEO_STARTED";
}
#Override
public void onVideoEnded() {
playerState = "VIDEO_ENDED";
}
#Override
public void onError(YouTubePlayer.ErrorReason reason) {
playerState = "ERROR (" + reason + ")";
if (reason == YouTubePlayer.ErrorReason.UNEXPECTED_SERVICE_DISCONNECTION) {
// When this error occurs the player is released and can no longer be used.
player = null;
//setControlsEnabled(false);
}
}
}
private static final class ListEntry {
public final String title;
public final String id;
public final boolean isPlaylist;
public ListEntry(String title, String videoId, boolean isPlaylist) {
this.title = title;
this.id = videoId;
this.isPlaylist = isPlaylist;
}
#Override
public String toString() {
return title;
}
}
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
String str = (String) adapterView.getItemAtPosition(position);
Toast.makeText(this, str, Toast.LENGTH_SHORT).show();
}
public class QueryAutoCompleteAdapter extends ArrayAdapter<String> implements Filterable {
public QueryAutoCompleteAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
}
#Override
public int getCount() {
return resultList.size();
}
#Override
public String getItem(int index) {
return resultList.get(index).toString();
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
LayoutInflater inflater = LayoutInflater.from(getContext());
if (row == null) {
row = inflater.inflate(R.layout.list_item_query, parent, false);
}
ArrayList<String> text = resultList.get(position);
String title = text.get(2);
String url = text.get(1);
videoID = text.get(0);
Log.v(LOG_TAG, "YOOOOOO BAIIII: " + title + url);
autoItem = (TextView) row.findViewById(R.id.list_item_title);
autoImage = (ImageView) row.findViewById(R.id.list_item_thumbnail);
autoItem.setText(title);
Bitmap bm = null;
try {
InputStream in = new java.net.URL(url).openStream();
bm = BitmapFactory.decodeStream(in);
} catch (Exception e) {
//Log.e("ERROR", e.getMessage());
e.printStackTrace();
}
autoImage.setImageBitmap(bm);
return row;
}
#Override
public Filter getFilter() {
Filter filter = new Filter() {
#Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults filterResults = new FilterResults();
// Constraint is the input given by the user
if (constraint != null) {
// Retrieve the autocomplete results.
resultList = autocomplete(constraint.toString());
int size = resultList.size();
for (int i=0; i<size; i++) {
//temp = resultList.get(i);
Log.v(LOG_TAG, "YOOOOOO: " + resultList.get(i));
thumbnailURL = resultList.get(i).get(1);
mediaTitle = resultList.get(i).get(2);
}
Log.v(LOG_TAG, "YOOOOOO: " + thumbnailURL + " " + mediaTitle);
// Assign the data to the FilterResults
filterResults.values = resultList;
filterResults.count = resultList.size();
}
return filterResults;
}
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results != null && results.count > 0) {
notifyDataSetChanged();
}
else {
notifyDataSetInvalidated();
}
}};
return filter;
}
}
private ArrayList<ArrayList<String>> autocomplete(String input) {
ArrayList<ArrayList<String>> queries = null;
// If there's no query, there is nothing to look up
if (input.length() == 0) {
return null;
}
String songQuery = input;
// These two need to be declared outside the try/catch
// so that they can be closed in the finally block.
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
// Will contain the raw JSON response as a string.
String queryJsonStr = null;
String part = "id,snippet";
String order = "relevance";
String q = songQuery;
String type = "video";
String categoryID = "kind";
String key = DeveloperKey.DEVELOPER_KEY;
try {
// Construct the URL for the query
final String BASE_URL = "https://www.googleapis.com/youtube/v3/search?";
final String PART_PARAM = "part";
final String ORDER_PARAM = "order";
final String QUERY_PARAM = "q";
final String TYPE_PARAM = "type";
final String CATEGORYID_PARAM = "videoCategoryId";
final String KEY_PARAM = "key";
Uri builtUri = Uri.parse(BASE_URL).buildUpon()
.appendQueryParameter(PART_PARAM, part)
.appendQueryParameter(ORDER_PARAM, order)
.appendQueryParameter(QUERY_PARAM, q)
.appendQueryParameter(TYPE_PARAM, type)
.appendQueryParameter(CATEGORYID_PARAM, categoryID)
.appendQueryParameter(KEY_PARAM, key)
.build();
URL url = new URL(builtUri.toString());
Log.v(LOG_TAG, "BUILT URI: " + builtUri.toString());
// Create the request to YouTube, and open the connection
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
// Read the input stream into a String
InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
return null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
// Since it's JSON, adding a newline isn't necessary (it won't affect parsing)
// But it does make debugging a *lot* easier if you print out the completed
// buffer for debugging.
buffer.append(line + "\n");
}
if (buffer.length() == 0) {
// Stream was empty. No point in parsing.
return null;
}
queryJsonStr = buffer.toString();
Log.v(LOG_TAG, "Query JSON String: " + queryJsonStr);
} catch (IOException e) {
Log.e(LOG_TAG, "ERROR ", e);
// If the code didn't successfully get the weather data, there's no point in attempting
// to parse it.
return null;
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e("PlaceholderFragment", "Error closing stream", e);
}
}
}
try {
JSONObject jsonObject = new JSONObject(queryJsonStr);
QueryJSONParser queryJSONParser = new QueryJSONParser();
// Getting the parsed data as a list construct
queries = queryJSONParser.parse(jsonObject);
} catch (Exception e) {
Log.d("Exception", e.toString());
}
return queries;
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
Relevant XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<fragment
android:name="com.google.android.youtube.player.YouTubePlayerSupportFragment"
android:id="#+id/youtube_fragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8dp"
android:orientation="horizontal"
android:gravity="top">
<include
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
layout="#layout/player_controls_container" />
</LinearLayout>
Any help would be greatly appreciated!
LOGCAT:
08-08 19:52:23.404 6040-6040/com.android.youtube V/MainActivity﹕ WE DUN GOOFD PLAYER IS NULL...
08-08 19:52:23.404 6040-6040/com.android.youtube D/AndroidRuntime﹕ Shutting down VM
08-08 19:52:23.404 6040-6040/com.android.youtube W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41894da0)
08-08 19:52:23.414 6040-6040/com.android.youtube E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.android.youtube, PID: 6040
java.lang.NullPointerException
at com.android.youtube.MainActivity.playVideoAtSelection(MainActivity.java:132)
at com.android.youtube.MainActivity.onItemSelected(MainActivity.java:148)

You are getting NullPointerException because your player variable is not initialized. You have commented this line:
this.player = player;
And for the question what is this.player = player?
this refers to the current object
For example:
public class myClass{
int x;
public myClass(int x){
this.x = x;
}
}
In the above example, you have used this because, you want to assign value of x to the x(attribute of myClass).
PS: If you are confused with this you can easily do the following:
Change your variable name to something else, may be mPlayer
and change
this.player = player to mPlayer = player;
Edited:
You have declared the YouTubePlayer outside the class. Move it inside i.e. Before overriding onCreate(..) method.
Updated:
Since the player is not attribute of the class, it won't know what it is. This is similar to not declaring any variable.