//播放速度
public static void changeplayerSpeed(float speed) {
// this checks on API 23 and up6.0以上
if (mPlayer == null) return;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (mPlayer.isPlaying()) {
mPlayer.setPlaybackParams(mPlayer.getPlaybackParams().setSpeed(speed));
}
else {
mPlayer.setPlaybackParams(mPlayer.getPlaybackParams().setSpeed(speed));
mPlayer.pause();
}
}
}