OnGlobalLayoutListener fires all the time if SoftKeyboard is visible

Question

what i'm trying to do sounds really simple. Resize my GridView when SoftKeyboard is open. Put it back on place(resize height) where it belongs if SoftKeyboard dissapears.

For this i did following:

root.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

        @Override
        public void onGlobalLayout() {
            // TODO Auto-generated method stub
            if(gv != null && searchbar != null) {
                root.getWindowVisibleDisplayFrame(r);
                if(screenHeight > r.bottom) {
                    RelativeLayout.LayoutParams myLayoutParams = (android.widget.RelativeLayout.LayoutParams) gv.getLayoutParams();
                    myLayoutParams.removeRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
                    gv.setLayoutParams(myLayoutParams);
                    int gvHeight = screenHeight - r.bottom - searchbar.getLayoutParams().height;
                    gv.getLayoutParams().height = gvHeight;
                }else {
                    RelativeLayout.LayoutParams myLayoutParams = (android.widget.RelativeLayout.LayoutParams) gv.getLayoutParams();
                    myLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
                    gv.setLayoutParams(myLayoutParams);
                }

            }

        }
    });

Where gv is my GridView. If i start my app, and click in my searchbar, the softkeyboard appears and this method is firing all the time.(Even if the layout isn't changing or even that i don't click anything). Therefore it blocks my UI. Did i do something wrong?

Also, does someone have a better idea implementing this function.(Resizing my Grid when Softkeyboard appears and vice versa).

Any help is appreciated.

Notice

Working with onFocusChange sounds not good to me. Because on my device. I can Close the SoftKeyboard with a backPress without loosing Focus

Answer 1

Have you tried using View.OnLayoutChangeListener available for API 11+ instead?

Otherwise you have to remove the listener when it fires after checking for a large enough height difference (see this). Don't forget to add the listener back in any click listener that fires up the keyboard.

@Override
public void onGlobalLayout() {
    int heightDiff = root.getRootView().getHeight() - root.getHeight();
    if (heightDiff > 100) { // if more than 100 pixels, its probably a keyboard...
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
            root.getViewTreeObserver().removeOnGlobalLayoutListener(this);
        } else {
            root.getViewTreeObserver().removeGlobalOnLayoutListener(this);
        }
        ... rest of your code
    }
}