iOS開發：耳機線控

耳機線控 1.引入

#import <AVFoundation/AVFoundation.h>

2.開啟遠端控制事件

  [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];    if (![[AVAudioSession sharedInstance] setActive:YES error:nil]) {        NSLog(@"Failed to set up a session");    }    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

3.調用遠端控制方法

- (void)remoteControlReceivedWithEvent:(UIEvent *)event{    NSLog(@"event type: %d, subtype:%d", event.type, event.subtype);    if (event.type == UIEventTypeRemoteControl) {        switch (event.subtype) {            case UIEventSubtypeRemoteControlPlay:              NSLog(@"播放");                break;            case UIEventSubtypeRemoteControlPause:                NSLog(@"暫停");                break;            case UIEventSubtypeRemoteControlStop:               NSLog(@"停止");                 break;            case UIEventSubtypeRemoteControlTogglePlayPause:                 NSLog(@"暫停/停止");                  break;            case UIEventSubtypeRemoteControlNextTrack:                 NSLog(@"下一曲");                 break;            case UIEventSubtypeRemoteControlPreviousTrack:                 NSLog(@"上一曲");                break;            case UIEventSubtypeRemoteControlBeginSeekingBackward:                NSLog(@"開始後退");                 break;            case UIEventSubtypeRemoteControlEndSeekingBackward:                NSLog(@"結束後退");                  break;            case UIEventSubtypeRemoteControlBeginSeekingForward:                NSLog(@"開始前進");                break;            case UIEventSubtypeRemoteControlEndSeekingForward:                NSLog(@"結束前進");                break;            default:                break;        }    }}