Back pressed events with system alert window

Question

I need to dismiss system alert window on back pressed and home button event.I have tried with onKeyEvent but in vain. As we can\'t cap

Answer 1

1. Show the Alert window through the Activity so you can detect it.

Implement the code to detect easily Back Button or Home Button pressed.

public class alertPopup extends Activity {

    Context context;
    final AlertDialog alertDialog;
    String TAG = "your Activity Name"
    boolean homePressed = false; // to detect the Homebutton pressed

    @Override
    public void onCreate(Bundle savedInstanceState) {
     AlertDialog.Builder builder = newAlertDialog.Builder(YourActivity.this, R.style.AppCompatAlertDialogStyle);
     builder.setTitle("AlertDialog Title");
            ..........
            ....... // Build ur AlertDialog

     alertDialog= builder.create();
     alertDialog.show();


         //to detect Alert Dialog cancel when user touches outside the Dialog prompt
     alertDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
            @Override
            public void onCancel(DialogInterface dialog) {
                Log.v(TAG,"Alert Dialog cancelled when user touches outside the Dialog prompt")
            }
        });

    }


    @Override
    public void onBackPressed()
    {
    Log.v(TAG,"Back Button Pressed");
     super.onBackPressed();

     alertDialog.dismiss();   //dismiss the alertDialog
     alertPopup.this.finish();  // Destroy the current activity

     homePressed = false;
    }

    @Override
    public void onResume() {
        super.onResume();
        homePressed = true; // default: other wise onBackPressed will set it to false
    }


    @Override
    public void onPause() {
        super.onPause();
        if(homePressed) { 

        alertDialog.dismiss();   //dismiss the alertDialog
        alertPopup.this.finish();  // Destroy the current activity

        Log.v(TAG, "Home Button Pressed"); }
    }


    public void onDestroy(){

        super.onDestroy();
    }


}

Note:

Add this Permission in Android Manifest to show the alert Window .

Happy Coding :)