Ios 如何检测耳机按键？

我试图检测用户是否按下耳机键，因为我使用了两种方法

-(void)headsetMicrophoneDetection
{
    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
    [[MPRemoteCommandCenter sharedCommandCenter].togglePlayPauseCommand addTarget:self action:@selector(onTooglePlayPause)];

    NSLog(@"calling headset method");
}
-(void)onTooglePlayPause
{
    NSLog(@"kishore");
}
- (void)remoteControlReceivedWithEvent:(UIEvent *)theEvent
{
    NSLog(@"callig method to :)");
    if (theEvent.type == UIEventTypeRemoteControl) {
        switch(theEvent.subtype) {
            case UIEventSubtypeRemoteControlTogglePlayPause:
                NSLog(@"Hello");
                break;
            case UIEventSubtypeRemoteControlPlay:
                NSLog(@"Hello 2");
                break;
            case UIEventSubtypeRemoteControlPause:
                NSLog(@"Hello 3");
                break;
            case UIEventSubtypeRemoteControlStop:
                NSLog(@"Hello 4");
                break;
            default:
                return;
        }
    }
}

---

但是调用此方法后，我没有发现代码中有什么错误，我启用了后台服务进行音频检查&我正在NSObject类中使用此所有方法。

请检查以下代码

- (BOOL)isHeadsetPluggedIn {
    AVAudioSessionRouteDescription* route = [[AVAudioSession sharedInstance] currentRoute];
    for (AVAudioSessionPortDescription* desc in [route outputs]) {
        if ([[desc portType]     isEqualToString:AVAudioSessionPortHeadphones])
           return YES;
    }
    return NO;}

---

请检查下面的代码

- (BOOL)isHeadsetPluggedIn {
    AVAudioSessionRouteDescription* route = [[AVAudioSession sharedInstance] currentRoute];
    for (AVAudioSessionPortDescription* desc in [route outputs]) {
        if ([[desc portType]     isEqualToString:AVAudioSessionPortHeadphones])
           return YES;
    }
    return NO;}

---

尝试将其包含在

viewDidAppear

[[AVAudioSession sharedInstance] setActive:YES error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

[[AVAudioSession sharedInstance] setActive:NO error:nil];

而这在

view中消失了

[[AVAudioSession sharedInstance] setActive:YES error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

[[AVAudioSession sharedInstance] setActive:NO error:nil];

---

尝试将其包含在

viewDidAppear

[[AVAudioSession sharedInstance] setActive:YES error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

[[AVAudioSession sharedInstance] setActive:NO error:nil];

而这在

view中消失了

[[AVAudioSession sharedInstance] setActive:YES error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

[[AVAudioSession sharedInstance] setActive:NO error:nil];

---

但我想检查用户是否按了任何按钮音量，播放/暂停谢谢帖子：）但我想检查用户是否按了任何按钮音量，播放/暂停感谢您的帖子：）当为MPRemoteCommandCenter定义选择器时，您是否缺少：在选择器中，因为该方法需要参数？@ldindu不，我没有，di也会感到奇怪。从那时起，您找到了解决方案吗？以后没有客户端跳过此选项@GyörgyBenedekAre您缺少：在您的选择器中定义MPRemoteCommandCenter的选择器时，该方法需要一个参数？@ldindu不，我没有错过。我也会感到奇怪。从那以后你找到解决方案了吗？以后没有客户跳过这个选项@GyörgyBenedek