How to update Android ListView in ViewPager?

Question

I want to update the ListView in the ViewPager after deleting, adding or updating from a user dialog. requery worked for me to update, but after some time it throws an exception .. I tried notifyDataSetChanged, but nothing happens ... I use simplecursoradapter as an adapter

Can someone tell me how to do this?

EDIT 1:

public class MainActivity extends Activity { private DatabaseAdapter db; private ViewPager myPager; private static int NUM_MY_VIEWS = 4; private MYView myView; private ListView listView1, listView2, listView3, listView4; private Cursor cursor1, cursor2, cursor3, cursor4; private SimpleCursorAdapter adapter1, adapter2, adapter3, adapter4; Context ctx = this; @Override protected void onCreate(Bundle savedInstanceState) { Log.d("DEBUG", "Create"); super.onCreate(savedInstanceState); setContentView(R.layout.main); db = new DatabaseAdapter(); myView = new MyView(); myPager = (ViewPager) findViewById(R.id.pager); myPager.setAdapter(myView); myPager.setCurrentItem(1); } @Override protected void onDestroy() { Log.d("DEBUG", "Destroy"); super.onDestroy(); db.close(); } @Override protected void onPause() { Log.d("DEBUG", "Pause"); super.onPause(); } @Override protected void onRestart() { Log.d("DEBUG", "Restart"); super.onRestart(); } @Override protected void onResume() { Log.d("DEBUG", "Resume"); super.onResume(); } @Override protected void onStart() { Log.d("DEBUG", "Start"); super.onStart(); db.open(); } @Override protected void onStop() { Log.d("DEBUG", "Stop"); super.onStop(); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { super.onActivityResult(requestCode, resultCode, intent); if(resultCode == RESULT_OK) { fillData(); } } /***********************************************************************/ private void fillData() { // TODO Log.d("DEBUG", "fillData"); adapter1.notifyDataSetChanged adapter2.notifyDataSetChanged(); adapter3.notifyDataSetChanged(); adapter4.notifyDataSetChanged(); notePager.getAdapter().notifyDataSetChanged(); } /* * click listener */ private void onClickDeleteNote(long id) { final long elemID = id; AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.dialogTitleDelete)) .setMessage(getString(R.string.dialogMessageDelete)) .setIcon(R.drawable.ic_dialog) .setCancelable(true) .setPositiveButton(getString(R.string.dialogButtonDeletePositive), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { if(db.deleteElem(elemID)) { fillData(); } else { Toast.makeText(getApplicationContext(), getString(R.string.dialogToastError), Toast.LENGTH_SHORT).show(); } } }) .setNegativeButton(getString(R.string.dialogButtonDeleteNegative), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); builder.show(); } /* * Pager */ private class MyView extends PagerAdapter { // TODO @Override public Object instantiateItem(View collection, int position) { LayoutInflater inflater = (LayoutInflater) collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); View view = null; switch (position) { case 0: // Tags { view = inflater.inflate(R.layout.view1, null); cursor1 = db.fetchData(0); startManagingCursor(cursor1); String[] from = new String[]{ DatabaseAdapter.TAG_TITLE }; int[] to = new int[]{ android.R.id.text1 }; adapter1 = new SimpleCursorAdapter(ctx, android.R.layout.simple_list_item_1, cursor1, from, to); listView1 = (ListView) view.findViewById(R.id.listView1); listView1.setAdapter(adapter1); break; } case 1: // Notes { view = inflater.inflate(R.layout.view2, null); cursor2 = db.fetchData(); startManagingCursor(cursor2); String[] from = new String[]{ DatabaseAdapter.MY_TITLE, DatabaseAdapter.MY_CONTENT }; int[] to = new int[]{ R.id.Title, R.id.Content }; adapter2 = new SimpleCursorAdapter(ctx, R.layout.my_row, cursor2, from, to); adapter2.setViewBinder(new MyViewBinder()); listView2 = (ListView) view.findViewById(R.id.listView2); listView2.setAdapter(adapter2); break; } case 2: // notes Started { //same as in case 1 break; } case 3: // notes Favorite { // same as in case 1 break; } } ((ViewPager) collection).addView(view, 0); return view; } @Override public int getCount() { return NUM_MY_VIEWS; } @Override public void destroyItem(View collection, int position, Object view) { ((ViewPager) collection).removeView((View) view); } @Override public boolean isViewFromObject(View view, Object object) { return view == ((View)object); } @Override public void restoreState(Parcelable arg0, ClassLoader arg1) {} @Override public Parcelable saveState() { return null; } @Override public void startUpdate(View view) {} @Override public void finishUpdate(View view) {} } } 

Answer 1

Try this option on your adapter.

 notifyDataSetChanged() 

It will update during the update.