How to capture an event when a user dismiss an alert dialog by pressing the backKey in Android

Question

I need to catch an event when the user presses the back key and try to dismiss the dialog I have a code like this

AlertDialog alertDialog = new AlertDialog.Builder(AppNotification.this).create();
    alertDialog.setTitle("Caution");
    alertDialog.setMessage("Alert");
    alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
      public void onClick(DialogInterface dialog, int which) {
        finish();
    } });
    alertDialog.show();
}

Now here i have given the user an option,But suppose if he presses the back key then i need to perform some other action.how to do it?

[Here][1] is a similar question with an accepted answer. [1]: http://stackoverflow.com/questions/2000102/android-override-back-button-to-act-like-home-button — rics, Feb 15 '12 at 07:39
Nope.. I am talking about alert dialog and back key event... i know about the BackKeyEvent.... — coderslay, Feb 15 '12 at 07:42
It was a hint how to override the back button. Rajeel explains how to add it to alert. — rics, Feb 15 '12 at 07:54
Yup Rajeel way will accomplish what i need to do.. Still i was looking for some better performance ways :) — coderslay, Feb 15 '12 at 07:55

score 26 · Accepted Answer · edited Feb 13 '18 at 12:15

26

This will help you

alertDialog.setOnCancelListener(new OnCancelListener() {
    public void onCancel(DialogInterface dialog) {
        // Your code ...                
    }
});

edited Feb 13 '18 at 12:15

Paul Chu

1,249
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answered Feb 15 '12 at 08:07

Sniper

2,412
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score 2 · Answer 2 · answered Nov 04 '15 at 15:40

2

There is also

alertDialog.setOnDismissListener(dialog -> { /* code goes here */ });

which seems to be handling specifically the dismiss event.

answered Nov 04 '15 at 15:40

Thanasis Kapelonis

869
9
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score 1 · Answer 3 · answered Feb 15 '12 at 07:48

You can capture the back key event when your alert appears set some boolean to true

AlertDialog alertDialog = new AlertDialog.Builder(AppNotification.this).create();
    alertDialog.setTitle("Caution");
    alertDialog.setMessage("Alert");
    alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
      public void onClick(DialogInterface dialog, int which) {
        finish();
    } });
  isAlertShowing = true;   // set to true for alert
    alertDialog.show();
}

then in event

@Override
 public boolean onKeyDown(int keyCode, KeyEvent event)
 {
  if (keyCode == KeyEvent.KEYCODE_BACK) 
        {
            if(isAlertShowing)
            {
               // perform your task here
             }

        }

        return super.onKeyDown(keyCode, event);
 }

This is a nice way... I was thinking of any listeners which the alert dialog has... :) — coderslay, Feb 15 '12 at 07:54

score 0 · Answer 4 · answered Feb 15 '12 at 07:42

Create a button for managing the back key event. Now inside the onClick event try to provide the below given code.

back_key.setOnClickListener(new OnClickListener() 
{

        public void onClick(View v) 
        {
             // Your Tracking Code
        }
});

How to capture an event when a user dismiss an alert dialog by pressing the backKey in Android

4 Answers4