NullPointerException while trying to bind at SimpleCursorAdapter
- by hrskrs
I have asked a question before where i found my mistake. However now i am facing with another problem. I have checked all the similar errors asked on StackOverflow but without success.Any help is appriciated.
The idea here is that i am getting image names from DB so depending on those names images from Drawable folder will be shown in a listView together with a description but im getting an error of NullPointException at setViewValue.
Here is the code snippet:
private void populateListView() {
ListView customListView = (ListView)findViewById(R.id.lvCustom);
Cursor cursor = DBhelper.getAllimages();
startManagingCursor(cursor);
String[] from = { DBhelper.COLUMN_PIC_URL, DBhelper.COLUMN_PIC_DESC};
int[] to = {R.id.ivImg, R.id.tvTitle};
SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(this, R.layout.custom_listview_row, cursor, from, to, 0);
cursorAdapter.setViewBinder(new ViewBinder() {
@Override
public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
ImageView imageImageView = (ImageView)findViewById(R.id.ivImg);
String[] imgNames = new String[cursor.getCount()];
int[] imgResourceIds = new int[cursor.getCount()];
for(int i=0; i<cursor.getCount(); i++){
imgNames[i] = cursor.getString(cursor.getColumnIndex(DBhelper.COLUMN_PIC_URL));
imgResourceIds[i] = getResources().getIdentifier(imgNames[i], "drawable", getPackageName());
imageImageView.setImageResource(imgResourceIds[i]);
cursor.moveToNext();
}
return true;
}
});
customListView.setAdapter(cursorAdapter);
}
Here is the Error from LogCat:
I have tried to log the output of imgNames[i] where it returns the url pic from the DB correctly and imgResourceIds[i] where it return the image resource id correctly also(it does not return NULL but something like: 295731). But it stops at imageImageView.setImageResource(imgResourceIds[i]);
To see from where that NullPointerException is coming, i commented out imageImageView.setImageResource(imgResourceIds[i]);. This time imageNames(those with a TAG) and imgResourceIds(those system printed out) came correctly but doubled, when i removed cursor.MoveToNext() last row were doubled. Here is the screen shot of that:
I have tried all the suggestions on stack about gettin a NullException but without success. Any idea where i am doing mistake?
