Question

I have an overlay view added to the content view in my app.

I want to add an action to the back button to remove this overlay view before then having the default back button functionality.

What would be the best way to go about this?

Thank you.

Answer 1

My solution to this scenario is to make a global indicator of where the user is in the application.

For example, consider this (straight from my current project):

//...
private boolean mInSettingsMode;
//...

// The button's onclick method.
public void onSettingsButtonClick(View v) {
    mInSettingsMode = true;
    // Initialize view stuff.
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        if (mInSettingsMode) {
            mInSettingsMode = false;
            resetToNormalView();
            return true;
        } else {
            return super.onKeyDown(keyCode, event);
        }
    }       
    return super.onKeyDown(keyCode, event);
}