ios - iOS是否可以在设备静音时播放本地通知声音

Question

我正在开发在收到本地通知时需要唤醒的闹钟。但是当设备静音时我什么都听不见，我在问，因为我看到了 2 个实现了该功能的应用程序，即（无线电警报）。谢谢，托默。

Answer 1

查看AVAudioSession的setCategory功能——它应该为您解决问题。

这是有关类别信息的链接：developer.apple.com - 音频会话类别

Answer 2

RadioAlarm, I'm almost certain, is able to play when muted because it keeps itself running in the background. For a NORMAL local notification (i.e. one that fires even after the app finishes), I have not found a way to overcome the mute switch or the ringer volume.

Answer 3

 -(void)playSound:(NSString *)filePath
    {
        [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error: nil];
        AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:[NSURL fileURLWithPath:filePath]];
        [playerItem addObserver:self forKeyPath:@"status" options:0 context:0];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(itemDidFinishPlaying) name:AVPlayerItemDidPlayToEndTimeNotification object:playerItem];
        self.audioPlayer = [[AVPlayer alloc] initWithPlayerItem:playerItem];
        [self.audioPlayer play];
    }