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POneed help in Home Button in android
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copied!<p>hi all i want to intercept my Home Button.<br> what i want is that whenever i press a Home Button i want to display a Alert dialog for Are you sure you want to Quit. if Yes then Finish the activity else do nothing. I have got to know that<br> when ever we Press Home Button the following callbacks are performed in order.</p> <p>onSaveInstanceState(Bundle outState) </p> <p>onPause() </p> <p>onStop() </p> <p>So i have overRide onSaveInstanceState Method and set my Alert dialog Code there but it gives me Exception on Dialog. Please Help friends. Guide me a lil..about it.</p> <p><strong>UPDATED:</strong> </p> <pre><code>@Override public void onSaveInstanceState(Bundle savedInstanceState) { boolean flag = displayAlertDialog(); if(flag){ this.finish(); super.onSaveInstanceState(savedInstanceState); } } </code></pre> <p><strong>displayAlertDialog Method:</strong> </p> <pre><code>private boolean isExit = false; public boolean displayAlertDialog() { //final boolean flag=true; int a = 0; AlertDialog.Builder alt_bld = new AlertDialog.Builder(this); alt_bld.setMessage("Are you sure you want to Exit?") .setPositiveButton("Yes", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub isExit = true; } }) .setNegativeButton("No", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub isExit = false; dialog.cancel(); } }); alt_bld.show(); return isExit; } </code></pre>

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