Question

我正在制作播放存储在firebase上的mp3混音的媒体播放器。我可以使链接没有问题。但当我再次按下该项目时，我希望它相当于按下停止。但由于某种原因，它并没有阻止它启动媒体的新实例。有人可以告诉我，我做错了。

我的代码

在我的创建

Array#reduce

然后我的方法

let dft = ["t", "h", "i", "s", "I", "s", "S", "p", "i", "n", "a", "l", "T", "a", "p"];
let ans = [4, 6, 12, -1];
let res = dft.reduce((s,a,i) => {
  (ans.indexOf(i) > -1) ? s.push(a, '-') : s.push(a);
  return s;
}, []);

console.log(res);

然后在项目onclick

mMediaplayer = null;

Answer 1

问题：假设媒体播放器已经在播放

// song is playing
mMediaplayer = new MediaPlayer(); // you created a new player
mMediaplayer.setDataSource(mp3);
mMediaplayer.prepare();//prepare to play
if (mMediaplayer.isPlaying()) { // new player is not in playing state
    stopPlaying();              // so you always checking the state of new player
} else {
    playMedia();
}

先检查然后创建

if (mMediaplayer!=null && mMediaplayer.isPlaying()) {
    stopPlaying();
} 
mMediaplayer = new MediaPlayer();
mMediaplayer.setDataSource(mp3);
mMediaplayer.prepare();//prepare to play
playMedia();

所以逻辑可以简化为

if (mMediaplayer!=null && mMediaplayer.isPlaying()) {
    mMediaplayer.stop();
    mMediaplayer.release();
} 
mMediaplayer = new MediaPlayer();
mMediaplayer.setDataSource(mp3);
mMediaplayer.prepare();//prepare to play
mMediaplayer.start();

我的媒体播放器启动一个新实例而不是停止

1 个答案: