Android - onBackPressed() not working

Question

I have an application building against Android 2.1 and I want to override the back button.

I have followed the example here:

http://android-developers.blogsp

Answer 1

You should call parent constructors.

In onKeyDown() method call

super.onKeyDown();

and in onBackPressed()

super.onBackPressed();

Answer 2

Are you using onKeyUp()?

Use just onKeyDown() in Android 1.x or onBackPressed() in Android 2.x

Answer 3

Some quick searching suggests you should place the Back intercept during onKeyUp(): http://developer.android.com/sdk/android-2.0.html. It's worth a try. The following code is directly from the site:

public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK
            && event.getRepeatCount() == 0) {
        event.startTracking();
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking()
            && !event.isCanceled()) {
        // *** DO ACTION HERE ***
        return true;
    }
    return super.onKeyUp(keyCode, event);
}