Question

我正在尝试使代码2 正常工作

该代码中的这一行需要进行调整，但是我不知道如何解决。

 public void AlarmForQuote() {

    Calendar calendar = Calendar.getInstance();

    calendar.setTimeInMillis(System.currentTimeMillis());
    calendar.set(Calendar.HOUR_OF_DAY, 21);
    calendar.set(Calendar.MINUTE, 28);

    Calendar cur = Calendar.getInstance();

    if (cur.after(calendar)) {
        calendar.add(Calendar.DATE, 1);
    }

    mTodaysQuoteIntent = new Intent(this, 
 TodaysQuoteAlarmReceiver.class);
    int ALARM_ID = 10000;
    mTodaysQuotePendingIntent = PendingIntent.getBroadcast(
            this.getApplicationContext(), ALARM_ID, mTodaysQuoteIntent, 
 PendingIntent.FLAG_UPDATE_CURRENT);

    mNewTodaysQuote = (AlarmManager) getSystemService(ALARM_SERVICE);

    mNewTodaysQuote.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
            AlarmManager.INTERVAL_DAY, mTodaysQuotePendingIntent);

}

点击第二个视频后，暂停之前的视频。

这有效：代码1

https://jsfiddle.net/d72Lp43v/418/

  const otherVideos = (video) => video !== player.getVideoUrl() !== temp;

该代码没有，怎么来？

代码2

https://jsfiddle.net/d72Lp43v/421/

  function onPlayerStateChange(event) {
    if (event.data === YT.PlayerState.PLAYING) {
      const temp = event.target.getVideoUrl();
      const otherVideos = (player) => player.getVideoUrl() !== temp;
      const pauseVideo = (player) => player.pauseVideo();
      players.filter(otherVideos).forEach(pauseVideo);
    }
    const player = event.target;
    const playerVars = player.b.b.playerVars;
    if (playerVars.loop && event.data === YT.PlayerState.ENDED) {
      player.seekTo(playerVars.start);
    }
  }

Answer 1

只需将该行更改为：

  const otherVideos = video => video.getVideoUrl() != player.getVideoUrl()

这将做您想要的。通过比较filter字符串，可以确保urls不包括当前视频。

您还可以通过这种方式不需要temp变量。

这里是working fiddle

Answer 2

players.filter(otherVideos)

我认为过滤器总是返回完整列表。

每个播放器都不是URL，因此video !== player.getVideoUrl()是true。并且true不是URL。 true !== temp也是如此。

我不知道您要改善代码1。但是我认为您要写的是以下内容：

function onPlayerStateChange(event) {
    const player = event.target;
    if (event.data === YT.PlayerState.PLAYING) {
      const temp = event.target.getVideoUrl();
      // only change this line:
      const otherVideos = (video) => video.getVideoUrl() !== player.getVideoUrl() && video.getVideoUrl() !== temp;
      const pauseVideo = (video) => video.pauseVideo();
      players.filter(otherVideos).forEach(pauseVideo);
    }

    const playerVars = player.b.b.playerVars;
    if (playerVars.loop && event.data === YT.PlayerState.ENDED) {
      player.seekTo(playerVars.start);
    }
}

调整JavaScript行

2 个答案: