Question

In the app i m looking for the users location using gps.In the Async pre execute method i m showing a toast.I want that while i show that toast the back button should be disabled

aftr the location is found i want to enable the back button in the post execute!

to disable the back button i have used.But this is not working

 OnKeyListener mainScreenKeyListener = new OnKeyListener() {
                @Override
                public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
                    boolean disableEvent = false;
                    if (event.getKeyCode()==KeyEvent.KEYCODE_BACK) {
                        disableEvent = true;
                    }

                    return disableEvent;
                }
            };

Answer 1

You can declare global variable disableEvent by

final boolean disableEvent;

Your Preexecute method can set it to false by

disableEvent = false;

Your Postexecute method can set it to true by

disableEvent = true;

You can override onBackPressed as shown below:

@Override
    public void onBackPressed() {
        // TODO Auto-generated method stub
        if (disableEvent)
        {
            // do nothing
        }
        else
        {
            // do something
        }
    }