java.lang.IllegalStateException MediaPlayer setDataSource

代码

public void addEffect(String effectPath) {
    if (effectPlayer == null) {
        effectPlayer = new MediaPlayer();
    } else {
        effectPlayer.stop(); //问题出在这里，stop 进入 stopped 状态，需要再调用 reset 才能进入 Idle 状态
    }
    try {
        effectPlayer.setDataSource(effectPath);
        twoVideoLayer.setDisplayTexture2(true);
        effectPlayer.setSurface(new Surface(twoVideoLayer.getVideoTexture2()));
        effectPlayer.prepare();
        effectPlayer.start();

    } catch (Exception e) {
        Log.e(TAG, "播放特效失败", e);
    }
}

异常信息

java.lang.IllegalStateException
   at android.media.MediaPlayer._setDataSource(Native Method)
   at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1154)
   at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1139)
   at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1118)
   at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1067)
   at com.lansosdk.videoeditor.LansoPlayer.addEffect(LansoPlayer.java:88)
   at work.wangxiang.lansodemo.PlayerActivity.onEffect(PlayerActivity.java:50)
   at java.lang.reflect.Method.invoke(Native Method)

Idle 状态下，才可调用 setDataSource 方法。
调用 reset，才会进入 Idle 状态。