public Asynk startThread(ListView listView, ProgressBar progressBar, TextView textView) {
Asynk asyncThread = new Asynk(listView, progressBar, textView);
asyncThread.setOnCompleteListener(
new Asynk.OnComplete() {
@Override
public void onIncrement(ProgressBar progressBar, TextView textView, int i) {
progressBar.setProgress(i);
textView.setText("" + i);
}
@Override
public void completed(
ListView listView,
ProgressBar progressBar,
TextView textView,
ArrayList<String> items) {
ArrayAdapter<String> adapter =
new ArrayAdapter<String>(context, android.R.layout.simple_list_item_1, items);
frag.setArrayList(items);
listView.setAdapter(adapter);
progressBar.setVisibility(View.GONE);
textView.setVisibility(View.GONE);
}
});
asyncThread.execute();
return asyncThread;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listView);
textView = (TextView) findViewById(R.id.textView);
progressBar = (ProgressBar) findViewById(R.id.progress);
fManager = getSupportFragmentManager();
frag = (MyFragment) fManager.findFragmentByTag(MyFragment.TAG);
if (null != frag) {
// screen was rotated
ArrayList<String> items = frag.getArrayList();
if (null == items) {
// the async task has not yet finished, grab it from the fragment and reset the references
// to the views
Asynk asyncThread = frag.getAsynk();
asyncThread.setAll(listView, progressBar, textView);
} else {
// the async task has finished, set list adapter
ArrayAdapter<String> adapter =
new ArrayAdapter<String>(context, android.R.layout.simple_list_item_1, items);
listView.setAdapter(adapter);
progressBar.setVisibility(View.GONE);
textView.setVisibility(View.GONE);
}
} else {
// initial setup, first time onCreate is run.
progressBar.setProgress(0);
// start the long running operation on the background thread.
Asynk asyncThread = startThread(listView, progressBar, textView);
frag = new MyFragment();
frag.setAsynk(
asyncThread); // keep the asyncTask in the fragment, the fragment will not be destroyed
// when we rotate the screen, the activity will be though.
fManager.beginTransaction().add(frag, MyFragment.TAG).commit();
}
}