Question

I need to show alert with yes no button on back key press for logout module. I know the onKeyDown() method. I have written code

Boolean bLogout=false,bTemp=false;

   private void showLogoutDialog(final int keyCode,  final KeyEvent event)
   {
       AlertDialog.Builder builder = new AlertDialog.Builder(TaskList.this);
        builder.setMessage("Do you want to logout?")
               .setTitle("test")
               .setCancelable(true)
               .setPositiveButton("Yes", new DialogInterface.OnClickListener() 
               {
                   public void onClick(DialogInterface dialog, int id) {                               
                         bLogout=false;
                         bTemp=true;
                        onKeyDown(keyCode, event);

                   }
               }).setNegativeButton("No", new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int id) {
                       dialog.cancel();
                       bTemp=true;
                       bLogout=true;
                   }
               });                     
        AlertDialog alert = builder.create();
        alert.show();

}

   public boolean onKeyDown( int keyCode,  KeyEvent event)
    {
     //  bLogout=false;

        if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount()==0) 
        {
            if(!bTemp)
            {
                 showLogoutDialog(keyCode,event);
                 return false;

            }

            else
            {
                bTemp=false;
                if(!bLogout)
                {
                     return super.onKeyDown(keyCode, event);
                }
                else
                {
                    bLogout=false;
                    return true;
                }       
            }

        }
        else 
            return super.onKeyDown(keyCode, event);
    }

but on Yes key press I am unable to logout the application. Actually I need to do this on home screen and ask user whether he want to logout?
Please help.

Answer 1

Call a custom function instead of onKeyDown() from the Yes button’s listener to complete the logout, and then call finish to actually exit.