OnBackPress activity does not show warning dialog

Question

I have an Activity in which when I click the button, then a warning dialog is not displayed. What could be the problem? Here is my code

@Override public void onBackPressed() { // TODO Auto-generated method stub super.onBackPressed(); AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(LogFish.this); // set title alertDialogBuilder.setTitle("Exit"); alertDialogBuilder.setIcon(R.drawable.ic_action_search); // set dialog message alertDialogBuilder .setMessage("This action will cause you to abandon all changes on current new fish log. \n\nAre you sure you want to exit?") .setCancelable(false) .setPositiveButton("YES",new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog,int id) { // if this button is clicked, close startActivity(new Intent(LogFish.this,MainActivity.class)); finish(); } }) .setNegativeButton("NO",new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog,int id) { // if this button is clicked, just close dialog.cancel(); } }); // create alert dialog AlertDialog alertDialog = alertDialogBuilder.create(); // show it alertDialog.show(); } 

Answer 1

You need to remove super.onBackPressed ();

Answer 2

 @Override public void onBackPressed() { final AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle("Title"); builder.setMessage("Your Message"); builder.setIcon(android.R.drawable.ic_dialog_alert); builder.setPositiveButton("YES", new OnClickListener() { public void onClick(DialogInterface dialog, int which) { //implement your logic for YES } }); builder.setNegativeButton("NO", new OnClickListener() { public void onClick(DialogInterface dialog, int which) { //implement your logic for NO } }); builder.setOnCancelListener(null); builder.show(); } 

Answer 3

 @Override public boolean onKeyDown(int keyCode, KeyEvent event) { //Handle the back button if(keyCode == KeyEvent.KEYCODE_BACK) { //Ask the user if they want to quit new AlertDialog.Builder(this) .setIcon(android.R.drawable.ic_dialog_alert) .setTitle(R.string.quit) .setMessage(R.string.really_quit) .setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { //Stop the activity YourClass.this.finish(); } }) .setNegativeButton(R.string.no, null) .show(); return true; } else { return super.onKeyDown(keyCode, event); } }