摇动播放音频的效果
导入头文件#import-(void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event{
NSLog(@"开始摇动");
//创建一个系统声音ID
SystemSoundID soundID;
//设置短效音频资源
```
AudioServicesCreateSystemSoundID((__bridge CFURLRef _Nonnull)([NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"音效" ofType:@"caf"]]), &soundID);
```
//开启震动效果
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
//播放
AudioServicesPlaySystemSound(soundID);
}
-(void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event{
NSLog(@"摇动结束");
self.view.backgroundColor = [[UIColor alloc]initWithRed:arc4random()%255/255.0 green:arc4random()%255/255.0 blue:arc4random()%255/255.0 alpha:1];
}
-(void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event{
}
设置后台播放
//设置后台播放模式nnn ------ AVAudioSession音频会话
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
//后台保持活跃
[session setActive:YES error:nil];
//设置
// 拔出耳机暂停播放,to通过观察者检测
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(routeChange:) name:AVAudioSessionRouteChangeNotification object:nil];
}
-(void)routeChange:(NSNotification *)notification{
NSDictionary *dic=notification.userInfo;
int changeReason= [dic[AVAudioSessionRouteChangeReasonKey] intValue];
if (changeReason==AVAudioSessionRouteChangeReasonOldDeviceUnavailable) {
AVAudioSessionRouteDescription *routeDescription=dic[AVAudioSessionRouteChangePreviousRouteKey];
AVAudioSessionPortDescription *portDescription= [routeDescription.outputs firstObject];
//原设备为耳机则暂停
if ([portDescription.portType isEqualToString:@"Headphones"]) {
if ([_player isPlaying])
{
[_player pause];
_timer.fireDate=[NSDate distantFuture];
}
}
}
}
info.plist文件的设置
