@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
View v;
Savelog.d(TAG, debug, "onCreateView() entered");
v = inflater.inflate(R.layout.fragment_viewer, parent, false);
mLoadingView = (ProgressBar) v.findViewById(R.id.fragmentPng_loading_id);
mListView = (ListView) v.findViewById(R.id.fragmentPng_list_id);
/* There are three scenarios when we reach this point:
* 1. Asyntask is completed and data is available for display
* 2. Asyntask is completed and data is NOT available
* 3. Asyntask is NOT completed
*/
if (mFileLoader == null) {
Savelog.d(TAG, debug, "bitmap array is null");
if (mFetcherTask == null || mFetcherTask.getStatus() == AsyncTask.Status.FINISHED) {
Savelog.d(TAG, debug, "Rendering done");
onFetchingCompleted();
} else {
Savelog.d(TAG, debug, "Rendering in progress");
mListView.setAlpha(0f);
mListView.setVisibility(View.VISIBLE);
}
} else {
Savelog.d(TAG, debug, "bitmap array is not null");
onFetchingCompleted();
}
return v;
} // end to implementing onCreateView()
// Allow user to cancel asynctask by moving to a different fragment
@Override
public void onDestroy() {
super.onDestroy();
if (mFetcherTask != null) {
mFetcherTask.cancel(true);
mFetcherTask = null;
}
MainActivity.clearInternalFiles(getActivity());
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mFilename = getArguments().getString(EXTRA_filename);
Savelog.d(TAG, debug, "onCreate() entered for " + mFilename);
mFileLoader = null;
/* Create a bitmap that is tall enough to cover the screen.
* This step is very important as the pages will be loaded asynchronously.
* If the placeholder is too small, the listview will attempt to load all
* the pages even if just 1 is to be displayed at any time. This will cause
* oom err
*/
mPlaceHolderBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_action_help);
mFetcherTask = new PdfFetcherAsyncTask(this, mFilename);
mFetcherTask.execute();
maxWidth = getScreenMaxDimension(this.getActivity());
setRetainInstance(true);
} // end to implementing onCreate()
