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I have problem with recycler view and fragments?

I write this code but not show me anything and in logcat have no error
and I have three classes for this code Adapter, recyclertouchlistener and fragments code...
my code in below
this code for fragment :
public class VerticalRecyclerFragment extends Fragment {
RecyclerView rcVertical;
static ArrayList<Products> productsArrayList = new ArrayList<>();
public VerticalRecyclerFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_vertical_recycler,
container, false);
showProduct();
rcVertical = view.findViewById(R.id.rcVertical);
rcVertical.addOnItemTouchListener(new RecyclerTouchListener(getContext(), rcVertical,
new RecyclerTouchListener.ClickListener() {
#Override
public void onClick(View view, int position) {
ProductActivity.products = productsArrayList.get(position);
startActivity(new Intent(getActivity(), ProductActivity.class));
}
#Override
public void onLongClick(View view, int position) {
}
}));
Adapter adapter = new Adapter(productsArrayList, getContext());
rcVertical.setLayoutManager(new LinearLayoutManager(getActivity()));
rcVertical.setItemAnimator(new DefaultItemAnimator());
rcVertical.setAdapter(adapter);
return view;
}
public void showProduct() {
final ProgressDialog loader = ProgressDialog.show(getActivity(),
"Get products...", "please wait",
false, false);
StringRequest request = new StringRequest(Request.Method.POST,
Config.getProductsWebApi,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
loader.dismiss();
productsArrayList.clear();
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray jsonArray = jsonObject.getJSONArray("response");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject object = jsonArray.getJSONObject(i);
String id = object.getString("id");
String name = object.getString("name");
String description = object.getString("description");
String price = object.getString("price");
String photo = object.getString("photo");
Products p = new Products(id, name, description, price, photo);
productsArrayList.add(p);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
loader.dismiss();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
requestQueue.add(request);
}}
and i write this code for Adapter in a single class :
public class Adapter extends RecyclerView.Adapter<Adapter.MyHolder> {
ArrayList<Products> ProductsList;
Context context;
public Adapter(ArrayList<Products> productsList, Context context) {
ProductsList = productsList;
this.context = context;
}
#Override
public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.row_layout, parent, false);
return new MyHolder(v);
}
#Override
public void onBindViewHolder(MyHolder holder, final int position) {
Products products = ProductsList.get(position);
holder.txtName.setText(products.getName());
holder.txtPrice.setText("$ " + products.getPrice());
Picasso.get().load(Config.ipValue + "/images/" + products.getPhoto()).into(holder.imgV);
holder.imgV.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
v.startAnimation(AnimationUtils.loadAnimation(context, android
.R.anim.slide_in_left));
}
});
}
#Override
public int getItemCount() {
return ProductsList.size();
}
class MyHolder extends RecyclerView.ViewHolder {
TextView txtName;
TextView txtPrice;
ImageView imgV;
public MyHolder(View itemView) {
super(itemView);
txtName = itemView.findViewById(R.id.rowTxtProductName);
txtPrice = itemView.findViewById(R.id.rowTxtPrice);
imgV = itemView.findViewById(R.id.rowImgProduct);
}
}}
RecyclerTouchListener :
public class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView,
final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context,
new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child,rv.getChildPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
public interface ClickListener {
void onClick(View view, int position);
void onLongClick(View view, int position);
}}
Please if you know whats the problem help me to debug it...
thank you

You need to notifyDataSetChanged() when you get the response.
Make the adapter as a class field
public class VerticalRecyclerFragment extends Fragment {
RecyclerView rcVertical;
static ArrayList<Products> productsArrayList = new ArrayList<>();
Adapter adapter; // <<< Change here
change the initialization (and every call of the adapter to the class field)
adapter = new Adapter(productsArrayList, getContext()); // <<< Change here
rcVertical.setLayoutManager(new LinearLayoutManager(getActivity()));
rcVertical.setItemAnimator(new DefaultItemAnimator());
rcVertical.setAdapter(adapter);
And finally call notifyDataSetChanged() when you get the response
public void showProduct() {
final ProgressDialog loader = ProgressDialog.show(getActivity(),
"Get products...", "please wait",
false, false);
StringRequest request = new StringRequest(Request.Method.POST,
Config.getProductsWebApi,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
loader.dismiss();
productsArrayList.clear();
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray jsonArray = jsonObject.getJSONArray("response");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject object = jsonArray.getJSONObject(i);
String id = object.getString("id");
String name = object.getString("name");
String description = object.getString("description");
String price = object.getString("price");
String photo = object.getString("photo");
Products p = new Products(id, name, description, price, photo);
productsArrayList.add(p);
}
adapter.notifyDataSetChanged(); // <<< Change here
} catch (JSONException e) {
e.printStackTrace();
}
}
}...
...
}
UPDATE:
add attach the adapter to the RecyclerView when you receive the data
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject object = jsonArray.getJSONObject(i);
String id = object.getString("id");
String name = object.getString("name");
String description = object.getString("description");
String price = object.getString("price");
String photo = object.getString("photo");
Products p = new Products(id, name, description, price, photo);
productsArrayList.add(p);
}
Adapter adapter = new Adapter(productsArrayList, getContext()); // <<< Change here
rcVertical.setAdapter(adapter); // <<< Change here

Converting Facebook post ID from String to int

I am making a news feed where I retrieve Facebook posts from a specific Facebook page. I retrieve those posts with help of the Facebook Graph API. I have a FeedItem which has an ID (int). The ID is also used to check which item is at the current position (Recyclerview).
The problem is that Facebook gives the posts a String ID. I have no idea how I can possibly convert this so that it will work with my application.
My Adapter:
public class FeedListAdapter extends RecyclerView.Adapter<FeedListAdapter.ViewHolder> {
private ImageLoader imageLoader = AppController.getInstance().getImageLoader();
private List<FeedItem> mFeedItems;
private Context mContext;
public FeedListAdapter(List<FeedItem> pFeedItems, Context pContext) {
this.mFeedItems = pFeedItems;
this.mContext = pContext;
}
/* Create methods for further adapter use.*/
#Override
public ViewHolder onCreateViewHolder(final ViewGroup parent, final int viewType) {
View feedView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.feed_item, parent, false);
return new ViewHolder(feedView);
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.populateRow(getFeedItem(position));
}
#Override
public long getItemId(int position) {
return mFeedItems.get(position).getId();
}
#Override
public int getItemCount() {
return mFeedItems.size();
}
private FeedItem getFeedItem(int position) {
return mFeedItems.get(position);
}
class ViewHolder extends RecyclerView.ViewHolder implements OnClickListener {
private ImageView mProfilePic;
private TextView mName;
private TextView mTimestamp;
private TextView mTxtStatusMsg;
private FeedImageView mFeedImage;
//initialize the variables
ViewHolder(View view) {
super(view);
mProfilePic = (ImageView) view.findViewById(R.id.feedProfilePic);
mName = (TextView) view.findViewById(R.id.feedName);
mTimestamp = (TextView) view.findViewById(R.id.feedTimestamp);
mTxtStatusMsg = (TextView) view.findViewById(R.id.feedStatusMessage);
mFeedImage = (FeedImageView) view.findViewById(R.id.feedImage);
view.setOnClickListener(this);
}
#Override
public void onClick(View view) {
}
private void populateRow(FeedItem pFeedItem) {
getProfilePic(pFeedItem);
mName.setText(pFeedItem.getName());
mTimestamp.setText(pFeedItem.getTimeStamp());
mTxtStatusMsg.setText(pFeedItem.getStatus());
getStatusImg(pFeedItem);
}
private void getProfilePic(FeedItem pFeedItem) {
imageLoader.get(pFeedItem.getProfilePic(), new ImageListener() {
#Override
public void onResponse(ImageContainer response, boolean arg1) {
if (response.getBitmap() != null) {
// load image into imageview
mProfilePic.setImageBitmap(response.getBitmap());
}
}
#Override
public void onErrorResponse(final VolleyError pVolleyError) {
}
});
}
private void getStatusImg(FeedItem pFeedItem) {
if (pFeedItem.getImage() != null) {
mFeedImage.setImageUrl(pFeedItem.getImage(), imageLoader);
mFeedImage.setVisibility(View.VISIBLE);
mFeedImage
.setResponseObserver(new FeedImageView.ResponseObserver() {
#Override
public void onError() {
}
#Override
public void onSuccess() {
}
});
} else {
mFeedImage.setVisibility(View.GONE);
}
}
}
My FeedFragment:
public class FeedFragment extends android.support.v4.app.Fragment {
private static final String TAG = FeedFragment.class.getSimpleName();
private FeedListAdapter mListAdapter;
private List<FeedItem> mFeedItems;
private RecyclerView mRecyclerView;
private String FACEBOOKURL = "**URL OF MY FB-POSTDATA**";
// newInstance constructor for creating fragment with arguments
public static FeedFragment newInstance() {
FeedFragment fragment = new FeedFragment();
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout resource file
View view = getActivity().getLayoutInflater().inflate(R.layout.fragment_feed, container, false);
initRecyclerView(view);
initCache();
return view;
}
#Override
public void onStart() {
super.onStart();
}
#Override
public void onResume() {
super.onResume();
}
private void initRecyclerView(View pView) {
mRecyclerView = (RecyclerView) pView.findViewById(R.id.fragment_feed_recyclerview);
LayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setHasFixedSize(false);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mRecyclerView.setNestedScrollingEnabled(true);
}
mFeedItems = new ArrayList<>();
mListAdapter = new FeedListAdapter(mFeedItems, getActivity());
mRecyclerView.setAdapter(mListAdapter);
}
private void initCache() {
// We first check for cached request
Cache cache = AppController.getInstance().getRequestQueue().getCache();
Entry entry = cache.get(FACEBOOKURL);
if (entry != null) {
// fetch the data from cache
try {
String data = new String(entry.data, "UTF-8");
try {
parseJsonFeed(new JSONObject(data));
} catch (JSONException e) {
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
} else {
// making fresh volley request and getting json
JsonObjectRequest jsonReq = new JsonObjectRequest(Method.GET,
FACEBOOKURL, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
VolleyLog.d(TAG, "Response: " + response.toString());
if (response != null) {
parseJsonFeed(response);
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
}
});
// Adding request to volley request queue
AppController.getInstance().addToRequestQueue(jsonReq);
}
}
private void parseJsonFeed(JSONObject response) {
try {
JSONArray feedArray = response.getJSONArray("data");
for (int i = 0; i < feedArray.length(); i++) {
JSONObject feedObj = (JSONObject) feedArray.get(i);
FeedItem item = new FeedItem();
item.setId(Integer.parseInt(feedObj.getString("id")));
item.setName("name of page");
// Image might be null sometimes
String image = feedObj.isNull("full_picture") ? null : feedObj
.getString("full_picture");
item.setImage(image);
// Status message might be null sometimes
String status = feedObj.isNull("message") ? null : feedObj
.getString("message");
item.setStatus(status);
item.setProfilePic("**profile picture url**");
item.setTimeStamp(feedObj.getString("created_time"));
mFeedItems.add(item);
}
// notify data changes to list adapter
mListAdapter.notifyDataSetChanged();
} catch (JSONException e) {
e.printStackTrace();
}
} }
As I said; I have no idea how to handle this and I figured someone here would maybe have an idea on how to convert this, so that I can use the String that the graph api gives me, and use it as an integer.

If the id is all numeric, you should be able to do this: int id = Integer.valueOf(facebookId)
If you have an undescore you can try this:
public int getIdFromString(String postId) {
String finalId;
while (postId.indexOf("_") > 0) {
finalId = postId.substring(0, postId.indexOf("_"));
postId = finalId.concat(postId.substring(postId.indexOf("_") + 1));
}
return Integer.valueOf(postId);
}

If the value is numeric and you want an integer object, do
Integer id = Integer.valueOf(facebookId);
If you want the primitive type int, then do
int id = Integer.parseInt(facebookId);
or
int id = Integer.valueOf(facebookId);

notifydatasetchanged() not working after onbackpressed()

My recyclerview is not updating correctly after the back button is
pressed.
The recyclerview works fine before the back button is pressed
The data is properly updated (seen in the log) but the recyclerview does not reflect the change
The purpose of the handler is to poll the database for a notification (working fine)
The notification toast is displayed everytime
I am not receiving any errors
If I can provide any other information to help do not hesitate to ask.
Main:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat_room);
recView = (RecyclerView) findViewById(R.id.recyclerViewMessages);
linearLayoutManager = new LinearLayoutManager(this) {};
linearLayoutManager.setReverseLayout(true);
recView.setLayoutManager(linearLayoutManager);
listData = (ArrayList) MessagingData.getMessageListData();
adapter = new RecyclerViewAdapterMessaging(listData, this);
recView.setAdapter(adapter);
adapter.setItemClickCallback(this);
final Handler h = new Handler();
final int delay = 2000; //milliseconds
h.postDelayed(new Runnable(){
public void run(){
Notify_Message_Async notify_message_async = new Notify_Message_Async(ctx);
notify_message_async.execute(NOTIFICATION, message_id);
System.out.println(global.getNotification());
if(global.getNotification()==1){
Toast.makeText(ctx, "Notified",
Toast.LENGTH_LONG).show();
try {
refresh_receive();
} catch (ExecutionException e) {
Toast.makeText(ctx, "catch",
Toast.LENGTH_LONG).show();
e.printStackTrace();
} catch (InterruptedException e) {
Toast.makeText(ctx, "catch",
Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
h.postDelayed(this, delay);
}
}, delay);
}
public void refresh_receive() throws ExecutionException, InterruptedException {
String method = "receive_message";
Receive_Live_Message_Async receive_live_message_async = new Receive_Live_Message_Async(this);
receive_live_message_async.execute(method, message_id).get();// Setup the message
adapter.setListData((ArrayList)MessagingData.getMessageListData());
adapter.notifyDataSetChanged();
global.setNotification(0);//reset notification
}
Adapter:
public class RecyclerViewAdapterMessaging extends RecyclerView.Adapter<RecyclerViewAdapterMessaging.Holder> {
private View v;
private List<List_Item_Messaging> listData;
private LayoutInflater inflater;
Global global = new Global();
private ItemClickCallback itemClickCallback;
Context context;
public interface ItemClickCallback {
void onItemClick(View v, int p);
void onSecondaryIconClick(int p);
}
public void setItemClickCallback(final ItemClickCallback itemClickCallback) {
this.itemClickCallback = itemClickCallback;
}
public RecyclerViewAdapterMessaging(List<List_Item_Messaging> listData, Context c) {
inflater = LayoutInflater.from(c);
context = c;
this.listData = listData;
}
#Override
public int getItemViewType(int position) {//0 for self... /1 for Other
List_Item_Messaging item = listData.get(position);
//ENSURE GLOBAL USERNAME NOT NULL
String other_username = item.getMessage_username();
if (other_username == null) {
((Activity) context).finish();
}
if (item.getMessage_username().trim().equals(global.getUserName())) {
System.out.println("The usernames are the same");
return 0;
} else {
System.out.println("The usernames are the NOT same");
return 1;
}
}
#Override
public Holder onCreateViewHolder(ViewGroup parent, int viewType) {
switch (viewType) {
case 0:
View view = inflater.inflate(R.layout.chat_thread, parent, false);// Self
v = view;
break;
case 1:
View view2 = inflater.inflate(R.layout.chat_thread_other, parent, false);// Not self
int width2 = global.getScreenWidth();
v = view2;
break;
}
return new Holder(v);
}
#Override
public void onBindViewHolder(Holder holder, int position) {
List_Item_Messaging item = listData.get(position);
holder.conversation.setText(item.getMessage_conversation());
}
public void setListData(ArrayList<List_Item_Messaging> exerciseList) {
this.listData.clear();
this.listData.addAll(exerciseList);
}
#Override
public int getItemCount() {
return listData.size();
}
class Holder extends RecyclerView.ViewHolder implements View.OnClickListener {
ImageView thumbnail;
//ImageView secondaryIcon;
TextView conversation;
View message_container;
public Holder(View itemView) {
super(itemView);
conversation = (TextView) itemView.findViewById(R.id.conversation_textview);
message_container = itemView.findViewById(R.id.message_container);
message_container.setOnClickListener(this);
}
#Override
public void onClick(View v) {
if (v.getId() == R.id.message_container) {
itemClickCallback.onItemClick(v, getAdapterPosition());
} else {
itemClickCallback.onSecondaryIconClick(getAdapterPosition());
}
}
}
public void clearItems() {
listData.clear();
this.notifyDataSetChanged();
}
}
I have referenced the following to no solution:
notifyDataSetChanged not working on RecyclerView
smoothScrollToPosition after notifyDataSetChanged not working in android
adapter.notifyDataSetChange() not working after called from onResume()

change a little in your code
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat_room);
recView = (RecyclerView) findViewById(R.id.recyclerViewMessages);
linearLayoutManager = new LinearLayoutManager(this) {};
linearLayoutManager.setReverseLayout(true);
recView.setLayoutManager(linearLayoutManager);
// change here
if (listData != null)
listData.clear();
else listData = new <> ArrayList();
listData.addAdd((ArrayList)MessagingData.getMessageListData());
adapter = new RecyclerViewAdapterMessaging(listData, this);
recView.setAdapter(adapter);
adapter.setItemClickCallback(this);
final Handler h = new Handler();
final int delay = 2000; //milliseconds
then make a small change here
public void refresh_receive() throws ExecutionException, InterruptedException {
String method = "receive_message";
Receive_Live_Message_Async receive_live_message_async = new Receive_Live_Message_Async(this);
receive_live_message_async.execute(method, message_id).get();// Setup the message
// changing here
dataList.clear();
dataList.addAdd((ArrayList)MessagingData.getMessageListData())
adapter.setListData(dataList);
adapter.notifyDataSetChanged();
global.setNotification(0);//reset notification
}
another problem in your code, you are using receive_live_message_async AsyncTask
put your update code in onPostExecute
public class receive_live_message_async extends AsyncTask {
#Override
protected Object doInBackground(Object[] objects) {
return null;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected void onPostExecute(Object o) {
// call your refresh_receive(); here
super.onPostExecute(o);
}
}
similarly when you are call receive_live_message_async.execute(); update your recyclerView in onPostExecute
#Override
protected void onPostExecute(Object o) {
dataList.clear();
dataList.addAll((ArrayList)MessagingData.getMessageListData());
adapter.notifyDataSetChanged();
super.onPostExecute(o);
}

OnItemClicklistener on list adapter that populate its items from database

I have a list view that implement swipelistadapter and app controller. The list view display correctly from the database, the only thing I need is to get position of each item and assign intent activity on each. These are my codes
public class SwipeListAdapter extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private List<Movie> movieList;
private String[] bgColors;
public SwipeListAdapter(Activity tab1, List<Movie> movieList) {
this.activity = tab1;
this.movieList = movieList;
bgColors = activity.getApplicationContext().getResources().getStringArray(R.array.movie_serial_bg);
}
#Override
public int getCount() {
return movieList.size();
}
#Override
public Object getItem(int location) {
return movieList.get(location);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.list_rows, null);
TextView serial = (TextView) convertView.findViewById(R.id.serial);
TextView title = (TextView) convertView.findViewById(R.id.title);
serial.setText(String.valueOf(movieList.get(position).id));
title.setText(movieList.get(position).title);
String color = bgColors[position % bgColors.length];
serial.setBackgroundColor(Color.parseColor(color));
return convertView;
}
}
Below Class is the main activity
public class Tab1 extends Fragment implements ViewSwitcher.ViewFactory, SwipeRefreshLayout.OnRefreshListener {
private int index;
private int[] images = new int[] { R.drawable.gallery1, R.drawable.gallery2, R.drawable.gallery3, R.drawable.gallery4, R.drawable.gallery5, R.drawable.gallery6, R.drawable.gallery7, R.drawable.gallery8 };
ImageSwitcher switcher;
android.os.Handler Handler = new Handler();
private SwipeRefreshLayout swipeRefreshLayout;
private SwipeListAdapter adapter;
private List<Movie> movieList;
private ListView listView;
// private static final String url = "http://api.androidhive.info/json/movies.json";
private String URL_TOP_250 = "http://192.158.33.172/locator/test/refractor.php?offset=";
// initially offset will be 0, later will be updated while parsing the json
private int offSet = 0;
private static final String TAG = Tab1.class.getSimpleName();
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.tab_1,container,false);
listView = (ListView) v.findViewById(R.id.list);
// Adding request to request queue
//Editted AppController.getInstance().addToRequestQueue(movieReq);
swipeRefreshLayout = (SwipeRefreshLayout) v.findViewById(R.id.swipe_refresh_layout);
movieList = new ArrayList<>();
adapter = new SwipeListAdapter(getActivity(), movieList);
listView.setAdapter(adapter);
swipeRefreshLayout.setOnRefreshListener(this);
swipeRefreshLayout.post(new Runnable() {
#Override
public void run() {
swipeRefreshLayout.setRefreshing(true);
fetchMovies();
}
}
);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
//String selectedFromList = (listView.getItemAtPosition(position).getString());
// String text = movieList[position];
Intent i = new Intent(getActivity(), Tab2.class);
// i.putExtra("TEXT", text);
startActivity(i);
}
});
return v;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
switcher = (ImageSwitcher) getActivity().findViewById(R.id.imageSwitcher1);
switcher.setFactory(this);
switcher.setImageResource(images[index]);
switcher.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
index++;
if (index >= images.length) {
index = 0;
}
switcher.setImageResource(images[index]);
}
});
switcher.setInAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_in));
switcher.setOutAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_out));
//auto change image
Handler.post(UpdateImage);
}
#Override
public void onRefresh() {
fetchMovies();
}
private void fetchMovies() {
// showing refresh animation before making http call
swipeRefreshLayout.setRefreshing(true);
// appending offset to url
String url = URL_TOP_250 + offSet;
// Volley's json array request object
JsonArrayRequest req = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
if (response.length() > 0) {
// looping through json and adding to movies list
for (int i = 0; i < response.length(); i++) {
try {
JSONObject movieObj = response.getJSONObject(i);
int rank = movieObj.getInt("rank");
String title = movieObj.getString("postTitle");
Movie m = new Movie(rank, title);
movieList.add(0, m);
// updating offset value to highest value
if (rank >= offSet)
offSet = rank;
} catch (JSONException e) {
Log.e(TAG, "JSON Parsing error: " + e.getMessage());
}
}
adapter.notifyDataSetChanged();
}
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Server Error: " + error.getMessage());
Toast.makeText(getActivity().getApplicationContext(), error.getMessage(), Toast.LENGTH_LONG).show();
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(req);
}
Runnable UpdateImage = new Runnable() {
public void run() {
// Increment index
index++;
if (index > (images.length - 1)) {
index = 0;
}
switcher.setImageResource(images[index]);
// Set the execution after 5 seconds
Handler.postDelayed(this, (3 * 1000));
}
};
#Override
public View makeView() {
ImageView myView = new ImageView(getActivity());
myView.setScaleType(ImageView.ScaleType.FIT_CENTER);
myView.setLayoutParams(new ImageSwitcher.LayoutParams(Gallery.LayoutParams.
FILL_PARENT, Gallery.LayoutParams.FILL_PARENT));
return myView;
}
}
Any help will be appreciated. Thanks.

Code for getting a single item:
String singleItem = getItem(position);

this is quite straight forward. here is a modification to your onItemClickListener:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
String text = movieList.get(position);
Intent i = new Intent(getActivity(), Tab2.class);
i.putExtra("TEXT", text);
startActivity(i);
}
});
just note that movieList object should be the same object you pass to your adapter

Move from a fragment with listview adapter to new activity base on each item selected

I have done some series of research about how to make each item of the listview in fragment activity to move to another activity having getView() from swipeListadapter. The codes below contain the tab fragment containing the swipe listadapter for the list view and the setonitemclicklistener.
public class SwipeListAdapter extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private List<Movie> movieList;
private String[] bgColors;
public SwipeListAdapter(Activity tab1, List<Movie> movieList) {
this.activity = tab1;
this.movieList = movieList;
bgColors = activity.getApplicationContext().getResources().getStringArray(R.array.movie_serial_bg);
}
#Override
public int getCount() {
return movieList.size();
}
#Override
public Object getItem(int location) {
return movieList.get(location);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.list_rows, null);
TextView serial = (TextView) convertView.findViewById(R.id.serial);
TextView title = (TextView) convertView.findViewById(R.id.title);
serial.setText(String.valueOf(movieList.get(position).id));
title.setText(movieList.get(position).title);
String color = bgColors[position % bgColors.length];
serial.setBackgroundColor(Color.parseColor(color));
return convertView;
}
}
The code below is my fragment tab class
public class Tab1 extends Fragment implements ViewSwitcher.ViewFactory, SwipeRefreshLayout.OnRefreshListener {
private int index;
private int[] images = new int[] { R.drawable.gallery1, R.drawable.gallery2, R.drawable.gallery3, R.drawable.gallery4, R.drawable.gallery5, R.drawable.gallery6, R.drawable.gallery7, R.drawable.gallery8 };
ImageSwitcher switcher;
android.os.Handler Handler = new Handler();
private SwipeRefreshLayout swipeRefreshLayout;
private SwipeListAdapter adapter;
private List<Movie> movieList;
private ListView listView;
// private static final String url = "http://api.androidhive.info/json/movies.json";
private String URL_TOP_250 = "http://192.177.53.152/locator/test/refractor.php?offset=";
// initially offset will be 0, later will be updated while parsing the json
private int offSet = 0;
private static final String TAG = Tab1.class.getSimpleName();
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View vi = inflater.inflate(R.layout.tab_1,container,false);
listView = (ListView) vi.findViewById(R.id.list);
listView.setBackgroundColor(Color.WHITE);
swipeRefreshLayout = (SwipeRefreshLayout) vi.findViewById(R.id.swipe_refresh_layout);
movieList = new ArrayList<>();
adapter = new SwipeListAdapter(getActivity(), movieList);
listView.setAdapter(adapter);
//getView().setOnClickListener();
swipeRefreshLayout.setOnRefreshListener(this);
swipeRefreshLayout.post(new Runnable() {
#Override
public void run() {
swipeRefreshLayout.setRefreshing(true);
fetchMovies();
}
}
);
return vi;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
switch(position) {
case 1:
intent = new Intent(getActivity().getApplicationContext(), New1.class);
startActivity(intent);
break;
case 2:
intent = new Intent(getActivity().getApplicationContext(), New2.class);
startActivity(intent);
break;
default:
intent = new Intent(getActivity().getApplicationContext(), New3.class);
startActivity(intent);
}
}
});
switcher = (ImageSwitcher) getActivity().findViewById(R.id.imageSwitcher1);
switcher.setFactory(this);
switcher.setImageResource(images[index]);
switcher.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
index++;
if (index >= images.length) {
index = 0;
}
switcher.setImageResource(images[index]);
}
});
switcher.setInAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_in));
switcher.setOutAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_out));
//auto change image
Handler.post(UpdateImage);
}
#Override
public void onRefresh() {
fetchMovies();
}
private void fetchMovies() {
// showing refresh animation before making http call
swipeRefreshLayout.setRefreshing(true);
// appending offset to url
String url = URL_TOP_250 + offSet;
// Volley's json array request object
JsonArrayRequest req = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
if (response.length() > 0) {
// looping through json and adding to movies list
for (int i = 0; i < response.length(); i++) {
try {
JSONObject movieObj = response.getJSONObject(i);
int rank = movieObj.getInt("rank");
String title = movieObj.getString("postTitle");
Movie m = new Movie(rank, title);
movieList.add(0, m);
// updating offset value to highest value
if (rank >= offSet)
offSet = rank;
} catch (JSONException e) {
Log.e(TAG, "JSON Parsing error: " + e.getMessage());
}
}
adapter.notifyDataSetChanged();
}
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Server Error: " + error.getMessage());
Toast.makeText(getActivity().getApplicationContext(), error.getMessage(), Toast.LENGTH_LONG).show();
// stopping swipe refresh
swipeRefreshLayout.setRefreshing(false);
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(req);
}
Runnable UpdateImage = new Runnable() {
public void run() {
// Increment index
index++;
if (index > (images.length - 1)) {
index = 0;
}
switcher.setImageResource(images[index]);
// Set the execution after 5 seconds
Handler.postDelayed(this, (3 * 1000));
}
};
#Override
public View makeView() {
ImageView myView = new ImageView(getActivity());
myView.setScaleType(ImageView.ScaleType.FIT_CENTER);
myView.setLayoutParams(new ImageSwitcher.LayoutParams(Gallery.LayoutParams.
FILL_PARENT, Gallery.LayoutParams.FILL_PARENT));
return myView;
}
}
In a nutshell, whenever I click any of the item listview, the app crashes and system logcat is not giving any clue to that. I want to be able to click an item on the listview in d fragment and to be directed to a new activity. Any help will be appreciated. Thanks.