How to safely turn WebView zooming on and off as needed

Question

As mentioned in this unanswered question: WebView throws Receiver not registered: android.widget.ZoomButtonsController

By turning the WebView zoom controls on and of

Answer 1

On a Zoom, I found that if one waits for the zoom control to fade out before calling WebView.destroy() a crash no longer occurs. So I've overwritten WebView.destroy() to post a message to a Handler to call WebView.destroy() after a few seconds. From the WebView source we will see the fade-out interval is:

// The time that the Zoom Controls are visible before fading away
private static final long ZOOM_CONTROLS_TIMEOUT =
        ViewConfiguration.getZoomControlsTimeout();

So I used ViewConfiguration.getZoomControlsTimeout() + 1000L as the delay before calling WebView's destroy method. So far no crashes.