I am having a situation that my dialog doesn't show up in my asyncTask. The codes below are my asyncTask
private class AsyncCallListWS extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
Log.i(TAG, "--------------------------------------------------");
Log.i(TAG, "pending ws: onPreExecute");
showLoadingDialog();
}
@Override
protected Void doInBackground(Void... params) {
Log.i(TAG, "pending ws: doInBackground");
//listDataParent = new ArrayList<Tn_Parent>();
listPending();
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
Log.i(TAG, "Call pending ws: onPostExecute");
dismissLoadingDialog();
//Log.i(TAG, "I am not up there "+status.toString());
if(getContext()!=null) {
//adapter = new Tn_ListViewAdapter(getActivity(), newList, selectAll);
//listView.setAdapter(adapter);
lvAdapter = new Tn_ListViewAdapter(getActivity(), lvList, selectAll);
listView.setAdapter(lvAdapter);
// .............. below is not needed .....................
//listAdapter = new Tn_ExpandableAdapter(listDataParent,getContext(), selectAll);
//expListView.setAdapter(listAdapter);
}
}
}
And below is my dialogbox codes. The dialog work well in other class.
public void showLoadingDialog() {
if (bar == null) {
bar = new ProgressDialog(getActivity());
bar.setMessage(getString(R.string.loading_message));
//bar.setCanceledOnTouchOutside(getRetainInstance());
bar.setCanceledOnTouchOutside(false);
}
bar.show();
}
public void dismissLoadingDialog() {
if (bar != null && bar.isShowing()) {
bar.dismiss();
}
}
I really wish to know what are the problems. The dialog show up when I put showLoadingDialog() in the onCreateView(), but the problem is that the dialog will not dismiss if i put it inside the onCreateView(). Please help.
For your dismiss() problem inside onCreate , try to change
public void dismissLoadingDialog() {
if (bar != null && bar.isShowing()) {
bar.dismiss();
}
}
to
public void dismissLoadingDialog() {
if (bar != null) {
bar.dismiss();
bar = null;
}
}
The problem to not showing up your dialog inside AsynTask might be your if (bar == null) { condition, because at that time your bar object will not be null. So that the time when you are dismissing the dialog you have to initialize it to null . And please write bar.show(); this line of code inside if(...) condition.
As Preetika Kaur suggested you should pass a Context
object to you showLoadingDialog()
and call bar = new ProgressDialog(yourContextObject);
cause otherwise the bar would always be null
.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.