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I am trying to show an alert dialog which contains a loading animation. The Alert dialog needs to appear after clicking another alert dialog that was initially in display. Basically,the first dialog contains a setPositive and setNegative button. The setPositive event is triggers a process which takes a few seconds. I wanted the second dialog containing the loading animation to appear when the process begins. I am not able to dismiss the first dialog until the process is done for the loading dialog to show.

//dialog that contains loading animation public class LoadingBox { Activity myActivity; AlertDialog dialog; LoadingBox(Activity activity){ myActivity = activity; } void startLoadingDialog(){ AlertDialog.Builder builder = new AlertDialog.Builder(myActivity); LayoutInflater inflater = myActivity.getLayoutInflater(); builder.setView(inflater.inflate(R.layout.layout_dialog,null)); builder.setCancelable(true); dialog = builder.create(); dialog.show(); } void dismissDialog(){ dialog.dismiss(); } } new AlertDialog.Builder(SmsListActivity.this) .setIcon(android.R.drawable.ic_dialog_alert) .setTitle("Add To Transaction List") .setMessage("Please note that this process might take long. Proceed?") .setPositiveButton("yes", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { LoadingBox loadingBox = new LoadingBox(SmsListActivity.this); loadingBox.startLoadingDialog(); addPendingToList(); loadingBox.dismissDialog(); } }).setNegativeButton("No",null).show();
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2 Answers 2

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To dismiss this alert dialog you should call dialog.dismiss(); in setPositiveButton onClick

 new AlertDialog.Builder(SmsListActivity.this) .setIcon(android.R.drawable.ic_dialog_alert) .setTitle("Add To Transaction List") .setMessage("Please note that this process might take long. Proceed?") .setPositiveButton("yes", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); LoadingBox loadingBox = new LoadingBox(SmsListActivity.this); loadingBox.startLoadingDialog(); addPendingToList(); loadingBox.dismissDialog(); } }).setNegativeButton("No",null).show();
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8 Comments

when I do it like this the dialog closes but the loadingBox dialog does not appear.
You are dismissing loadingBox on the same onClick function
Where should I place the dismissing code? I thought that it should wait for addPending function to complete before it disappears
try removing loadingbox.dismissDialog line from there if still not appearing add a Handler with some delay to show the loadingbox view. you should figure out why the second alertdialog is not appearing
It appear when I remove loadingbox.dismissDialog line from click event. Now, how do I trigger it do dismiss after the process is done?
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Like @MathankumarK said, calling .dismiss(); in your positive onClick function is perhaps the best option, but you could use Thread.sleep(----) after the dismiss(); to wait in milliseconds until the operation is underway and then show the "loading" dialog. Since the operation is slowing down the app thread anyway, it shouldn't pose a problem by slowing or stopping your app for a few seconds.

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I used AsyncTask as mentioned by @MathankumarK and it handled the job very well.

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