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I have stored the spinner item on the Sqlite db successfully but when i reopen my app the spinner object reads null

I am working on saving the spinner object on my SQLite database, I have managed to get it to display on my adapter but everytime I close my app and reopen it says null but when I navigate to another space and go back it restores, below is my code what am I doing wrong?
public class ExpenseDetailFragment extends Fragment {
private View view;
private ExpenseData selectedExpenseData;
private final int PICKER_REQUEST = 1;
private Activity activity = null;
private String currency = "USD";
private Spinner currencyd;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_expense_detail, container, false);
activity = this.getActivity();
selectedExpenseData = (ExpenseData) getArguments().getSerializable("selectedExpenseData");
ImageButton storeExpenseButton = getActivity().findViewById(R.id.addExpense);
Button deleteButton = view.findViewById(R.id.deleteButton);
currencyd = getActivity().findViewById(R.id.currency_spinner);
storeExpenseButton.setImageResource(R.drawable.ic_action_done);
currencyd.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
currency = adapterView.getItemAtPosition(i).toString();
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {
//adapterView.getLastVisiblePosition();
}
});
//button
storeExpenseButton.setOnClickListener(v -> {
String cur = currencyd.getSelectedItem().toString();
TextView amountTextView1 = getActivity().findViewById(R.id.amount);
try {
double amount = Double.valueOf(amountTextView1.getText().toString());
selectedExpenseData.setExpenseAmount(amount);
} catch (NumberFormatException e) {
Toast.makeText(getContext(), "Budget created", Toast.LENGTH_SHORT).show();
}
selectedExpenseData.setCurrency(cur);
if (selectedExpenseData.getId() != 0)
updateExpense(v, selectedExpenseData);
else
storeExpense(v, selectedExpenseData);
});
return view;
}
private void storeExpense(View view, ExpenseData expenseData) {
ContentValues values = new ContentValues();
values.put(ExpensesContract.ExpenseEntry.COLUMN_EXPENSE_CURRENCY, expenseData.getCurrency());
if (uri == null) {
Toast.makeText(this.getActivity(), R.string.editor_save_expense_failed,
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this.getActivity(), R.string.editor_save_expense_successful,
Toast.LENGTH_SHORT).show();
checkBudgets(expenseData.getExpenseName());
}
getActivity().finish();
Intent intent = new Intent(this.getActivity(), MainActivity.class); //remove this after fix
startActivity(intent);//remove this after fix
}
private void updateExpense(#SuppressWarnings("unused") View view, ExpenseData expenseData) {
Uri currentExpenseURI = ContentUris.withAppendedId(ExpensesContract.ExpenseEntry.CONTENT_URI, expenseData.getId());
ContentValues values = new ContentValues();
values.put(ExpensesContract.ExpenseEntry.COLUMN_EXPENSE_CURRENCY, expenseData.getCurrency());
int rowsAffected = getActivity().getContentResolver().update(currentExpenseURI, values, null, null);
if (rowsAffected == 0) {
Toast.makeText(this.getActivity(), getString(R.string.editor_update_expense_failed),
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this.getContext(), getString(R.string.editor_update_expense_successful),
Toast.LENGTH_SHORT).show();
checkBudgets(expenseData.getExpenseName());
}
getActivity().finish();
Intent intent = new Intent(this.getActivity(), MainActivity.class); //remove this after fix
startActivity(intent);//remove this after fix
}

Phone directories in Android and problems with getting anything from them

Hi Stackoverflow community!
At first I want to say that I am a rookie in programming. Recently I tried to get photos from my phone directories by my app. It seems pretty hard to do, because I have only succeded in displaying my Camera directory, but not for example Download or Screenshots. It is really strange that Android Studio cannot resolve DOWNLOAD word in the line directories.add(filePaths.DOWNLOAD);
What is wrong with my code??? Or with me and my lack of experience...
My code:
public class GalleryFragment extends Fragment {
private static final String TAG = "GalleryFragment";
//constants
private static final int NUM_GRID_COLUMNS = 3;
//widgets
private GridView gridView;
private ImageView galleryImage;
private ProgressBar mProgressBar;
private Spinner directorySpinner;
//vars
private ArrayList<String> directories;
private String mAppend = "file:/";
private String mSelectedImage;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_gallery, container, false);
galleryImage = (ImageView) view.findViewById(R.id.galleryImageView);
gridView = (GridView) view.findViewById(R.id.gridView);
directorySpinner = (Spinner) view.findViewById(R.id.spinnerDirectory);
mProgressBar = (ProgressBar) view.findViewById(R.id.progressBar);
mProgressBar.setVisibility(View.GONE);
directories = new ArrayList<>();
Log.d(TAG, "onCreateView: started.");
ImageView shareClose = (ImageView) view.findViewById(R.id.ivCloseShare);
shareClose.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d(TAG, "onClick: closing the gallery fragment.");
getActivity().finish();
}
});
TextView nextScreen = (TextView) view.findViewById(R.id.tvNext);
nextScreen.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d(TAG, "onClick: navigating to the final share screen.");
if (isRootTask()) {
Intent intent = new Intent(getActivity(), NextActivity.class);
intent.putExtra(getString(R.string.selected_image), mSelectedImage);
startActivity(intent);
} else {
Intent intent = new Intent(getActivity(), AccountSettingsActivity.class);
intent.putExtra(getString(R.string.selected_image), mSelectedImage);
intent.putExtra(getString(R.string.return_to_fragment), getString(R.string.edit_profile_fragment));
startActivity(intent);
getActivity().finish();
}
}
});
init();
return view;
}
private boolean isRootTask() {
if (((ShareActivity) getActivity()).getTask() == 0) {
return true;
} else {
return false;
}
}
private void init() {
FilePaths filePaths = new FilePaths();
//check for other folders indide "/storage/emulated/0/pictures"
if (FileSearch.getDirectoryPaths(filePaths.PICTURES) != null) {
directories = FileSearch.getDirectoryPaths(filePaths.PICTURES);
}
directories.add(filePaths.CAMERA);
directories.add(filePaths.DOWNLOAD);
ArrayList<String> directoryNames = new ArrayList<>();
for (int i = 0; i < directories.size(); i++) {
Log.d(TAG, "init: directory: " + directories.get(i));
int index = directories.get(i).lastIndexOf("/");
String string = directories.get(i).substring(index);
directoryNames.add(string);
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_spinner_item, directoryNames);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
directorySpinner.setAdapter(adapter);
directorySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Log.d(TAG, "onItemClick: selected: " + directories.get(position));
//setup our image grid for the directory chosen
setupGridView(directories.get(position));
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
private void setupGridView(String selectedDirectory) {
Log.d(TAG, "setupGridView: directory chosen: " + selectedDirectory);
final ArrayList<String> imgURLs = FileSearch.getFilePaths(selectedDirectory);
//set the grid column width
int gridWidth = getResources().getDisplayMetrics().widthPixels;
int imageWidth = gridWidth / NUM_GRID_COLUMNS;
gridView.setColumnWidth(imageWidth);
//use the grid adapter to adapter the images to gridview
GridImageAdapter adapter = new GridImageAdapter(getActivity(), R.layout.layout_grid_imageview, mAppend, imgURLs);
gridView.setAdapter(adapter);
//set the first image to be displayed when the activity fragment view is inflated
try {
setImage(imgURLs.get(0), galleryImage, mAppend);
mSelectedImage = imgURLs.get(0);
} catch (ArrayIndexOutOfBoundsException e) {
Log.e(TAG, "setupGridView: ArrayIndexOutOfBoundsException: " + e.getMessage());
}
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.d(TAG, "onItemClick: selected an image: " + imgURLs.get(position));
setImage(imgURLs.get(position), galleryImage, mAppend);
mSelectedImage = imgURLs.get(position);
}
});
}
private void setImage(String imgURL, ImageView image, String append) {
Log.d(TAG, "setImage: setting image");
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.displayImage(append + imgURL, image, new ImageLoadingListener() {
#Override
public void onLoadingStarted(String imageUri, View view) {
mProgressBar.setVisibility(View.VISIBLE);
}
#Override
public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
mProgressBar.setVisibility(View.INVISIBLE);
}
#Override
public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
mProgressBar.setVisibility(View.INVISIBLE);
}
#Override
public void onLoadingCancelled(String imageUri, View view) {
mProgressBar.setVisibility(View.INVISIBLE);
}
});
}
}
FilePaths sorry for not formatting
public class FilePaths {
//"storage/emulated/0"
public String ROOT_DIR = Environment.getExternalStorageDirectory().getPath();
public String PICTURES = ROOT_DIR + "/Pictures";
public String CAMERA = ROOT_DIR + "/DCIM/camera";
public String FIREBASE_IMAGE_STORAGE = "photos/users/";
}

Well, the reason is simple. It's because you haven't defined the variable DOWNLOAD in the FilePaths.class. You also shouldn't point to the path like this, instead of that, use one or more of this variables:
Environment.getDataDirectory()
Environment.getDownloadCacheDirectory()
Environment.getExternalStorageDirectory()
Environment.getRootDirectory()
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_ALARMS)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_NOTIFICATIONS)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PODCASTS)
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_RINGTONES)
So your FilePaths should looks like this:
public class FilePaths {
//"storage/emulated/0"
public String ROOT_DIR = Environment.getExternalStorageDirectory().getPath();
public String DOWNLOADS = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
public String PICTURES = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
public String CAMERA = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
public String ALARMS = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_ALARMS);
public String DOCUMENTS = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
public String MOVIES = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
public String MUSIC = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);
public String NOTIFICATIONS = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_NOTIFICATIONS);
public String PODCASTS = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PODCASTS);
public String RINGTONES = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_RINGTONES);
public String FIREBASE_IMAGE_STORAGE = "photos/users/";
}

It is in general not a good idea to use class names for your own class that are similar to java classes! Calling your class FilePaths will lead to confusion.
Change the name of your class to MyFilePaths (or something else!).
Then you can make the java file "MyFilePaths.java". Make the class public and make your variables static final:
public class MyFilePaths {
//"storage/emulated/0"
public static final String ROOT_DIR = Environment.getExternalStorageDirectory().getPath();
public static final String PICTURES = ROOT_DIR + "/Pictures";
public static final String CAMERA = ROOT_DIR + "/DCIM/camera";
public static final String FIREBASE_IMAGE_STORAGE = "photos/users/";
}
Now you can do this:
directories.add(MyFilePaths.CAMERA);
Edit
In your code you call:
FilePaths filePaths = new FilePaths();
But your FilePaths class does not have a public constructor.

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.

list view adapter setting null object on custom dialog

hi friends i had tried to implement list view in the custom dialog and passing data dynamically by using JSON and searched everywhere but don't got any solution i had tried everything from past 3 days and also i don't see any wrong in my code too i had set adapter correctly i am getting this error
Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference
public class Cat_comment_adap extends BaseAdapter {
String cid;
ImageLoader imageLoader = AppController.getInstance().getImageLoader();
int idddget;
private LayoutInflater inflater;
private List<CurrentList> catlist;
private PopupWindow commentWindow;
ArrayList<CurrentList> commentlist = new ArrayList<CurrentList>();
Activity activity;
public Cat_comment_adap(Activity activity, List<CurrentList> catlist) {
this.activity = activity;
this.catlist = catlist;
}
#Override
public int getCount() {
return catlist.size();
}
#Override
public Object getItem(int i) {
return catlist.get(i);
}
#Override
public long getItemId(int i) {
return i;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.cat_row, viewGroup, false);
NetworkImageView singleimg = (NetworkImageView) view.findViewById(R.id.singleimg);
final ImageView agree = (ImageView) view.findViewById(R.id.agree);
ImageView commentbox = (ImageView) view.findViewById(R.id.commentbox);
commentbox.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
onShowpopup(view);
Toast.makeText(activity, "Comments Button clicked", Toast.LENGTH_SHORT).show();
}
});
final CurrentList catertlist = catlist.get(i);
singleimg.setImageUrl(catertlist.getCatimg(), imageLoader);
idddget = catertlist.getCcids();
SharedPreferences eveid = activity.getSharedPreferences("loginPrefs", Context.MODE_PRIVATE);
cid = eveid.getString("userid", "");
agree.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String url = "http://sampletemplates.net/majority/api.php?action=addVote&question_id=" + idddget + "&user_id=" + cid + "&vote=1&source=android";
Log.d("Vote", "http://sampletemplates.net/majority/api.php?action=addVote&question_id=" + idddget + "&user_id=" + cid + "&vote=1&source=android");
JsonObjectRequest voting = new JsonObjectRequest(Request.Method.POST, url, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
String votings = response.getString("status");
if (votings.equals("success")) {
agree.setImageResource(R.drawable.agreed);
Toast.makeText(activity, "Voted Successfully", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(activity, "Already Voted", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
AppController.getInstance().addToRequestQueue(voting);
}
});
return view;
}
public void onShowpopup(View v) {
LayoutInflater layoutInflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View popupview = layoutInflater.inflate(R.layout.current_comment_dialog, null);
ListView commentsListView = (ListView) v.findViewById(R.id.commentsListView);
// commentAdapter = new comment_adapter(activity, commentlist);
WindowManager wm = (WindowManager) activity.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
commentWindow = new PopupWindow(popupview, width - 50, height - 400, true);
commentWindow.setBackgroundDrawable(activity.getResources().getDrawable(R.drawable.comment_bg));
commentWindow.setFocusable(true);
commentWindow.setOutsideTouchable(true);
commentWindow.showAtLocation(v, Gravity.BOTTOM, 0, 100);
commentsListView.setAdapter(new comment_adapter(activity,commentlist));
commentAdapter.notifyDataSetChanged();
}
Adapter class
public class comment_adapter extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private List<CurrentList> commentlist;
public comment_adapter(Activity activity, List<CurrentList> commentlist){
this.activity = activity;
this.commentlist = commentlist;
}
#Override
public int getCount() {
return commentlist.size();
}
#Override
public Object getItem(int i) {
return commentlist.get(i);
}
#Override
public long getItemId(int i) {
return i;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
if (inflater == null)
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (view == null)
view = inflater.inflate(R.layout.comment_row, viewGroup, false);
TextView user_name = (TextView) view.findViewById(R.id.user_name);
TextView posttime = (TextView) view.findViewById(R.id.posttime);
TextView comtsdetails = (TextView) view.findViewById(R.id.comtsdetails);
CurrentList listofcomments = commentlist.get(i);
user_name.setText(listofcomments.getEvtusername());
posttime.setText(listofcomments.getTimetaken());
comtsdetails.setText(listofcomments.getEvcomment());
return view;
}
}

here in this class Cat_comment_adap in the method onShowpopup change
View popupview = layoutInflater.inflate(R.layout.current_comment_dialog, null);
ListView commentsListView = (ListView) v.findViewById(R.id.commentsListView);
to
View popupview = layoutInflater.inflate(R.layout.current_comment_dialog, null);
ListView commentsListView = (ListView) popupview.findViewById(R.id.commentsListView);
because your inflating listview from this layout so u have to give the name of inflated layout object there not the parameter of the method

public void onClick(View view) {
onShowpopup(view);
Toast.makeText(activity, "Comments Button clicked", Toast.LENGTH_SHORT).show();
}
Here passed view is not R.layout.cat_row as you think but it's a button that was clicked.
So just use onShowpopup(self.view) and it will work :)
or change to onClick(View clickedButton)