android 自定义音量进度条,android 修改音量键按下出现的进度条

主要实现代码

if (KeyEvent.KEYCODE_VOLUME_DOWN == keyCode || KeyEvent.KEYCODE_VOLUME_UP == keyCode) {

AudioManager audioManager = (AudioManager) getSystemService(Service.AUDIO_SERVICE);

audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,

audioManager.getStreamVolume(AudioManager.STREAM_MUSIC), AudioManager.FLAG_SHOW_UI);

}

setStreamVolume 方法详解

streamType 流类型

index 音量

flag 音量模式

/**

* Sets the volume index for a particular stream.

*

This method has no effect if the device implements a fixed volume policy

* as indicated by {@link #isVolumeFixed()}.

* @param streamType The stream whose volume index should be set.

* @param index The volume index to set. See

* {@link #getStreamMaxVolume(int)} for the largest valid value.

* @param flags One or more flags.