AVPlayer - 如何重置播放按钮

Question

我正在开发一个在线流式传输音频文件的应用程序。下面的代码可以正常工作，但是当音频文件结束时，播放按钮不会重置。该按钮仍被按下，在用户可以再次播放音频文件之前，用户必须按下该按钮2次。

我的问题是：如何在音频文件结束后自动重置播放按钮？

这是我的代码：

-(IBAction)togglePlayPauseTapped:(id)sender
    {
        if(self.togglePlayPause.selected) {
            [self.audioPlayer pause];
            [self.togglePlayPause setSelected:NO];
        } else {
            [self.audioPlayer play];
            [self.togglePlayPause setSelected:YES];

            self.audioPlayer = [[AVPlayer alloc] init];
            NSString *urlString = @"MYURL";
            NSURL* urlStream = [NSURL URLWithString:urlString];
            AVPlayerItem * currentItem = [AVPlayerItem playerItemWithURL:urlStream];

            [self.audioPlayer replaceCurrentItemWithPlayerItem:currentItem];
            [self.audioPlayer play];




        }

    }`

Answer 1

将audioPlayer的delegate设置为self，确保指定的ViewController能够接收到AVAudioPlayer Delegate的调用。然后实现audioPlayerDidFinishPlaying方法并调用你的togglePlayPauseTapped方法：

- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
    [self togglePlayPauseTapped:nil];
}

总数应该是这样的：

编辑：

然后改变这个

self.audioPlayer = [[AVPlayer alloc] init];

到这里：

self.audioPlayer = [[AVAudioPlayer alloc] init];