title: Android MediaPlayer Mute and unmute
body: <p>I am playing a video using <code>MediaPlayer</code>. Now there is a mute/unmute button. This toggle button should set first the video play without sound, on second press it should make its volume to its initial state. I tried with <code>AudioManager.setMicrophoneMute</code> method. It did not work. How it can be done?</p>