- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions

NSDictionary* remoteNotification = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey]; 

@property (nonatomic) BOOL isLaunchedByNotification; 

- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo 

- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler 

//订阅展示视图消息，将直接打开某个分支视图
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(presentView:) name:@"PresentView" object:nil];//弹出消息框提示用户有订阅通知消息。主要用于用户在使用应用时，弹出提示框
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showNotification:) name:@"Notification" object:nil]; 

#import <AudioToolbox/AudioToolbox.h> 

@property (nonatomic, assign) SystemSoundID soundID;
NSString *path = [[NSBundle mainBundle] pathForResource:soundName ofType:nil];
AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:path], &_soundID);
AudioServicesAddSystemSoundCompletion(_soundID, NULL, NULL, soundCompleteCallback, NULL); // 核心代码 可重复执行
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
AudioServicesPlaySystemSound(_soundID);
// block 用于 AudioServicesAddSystemSoundCompletion(_soundID, NULL, NULL, soundCompleteCallback, NULL); 函数调用
void soundCompleteCallback(SystemSoundID soundID,void * clientData)
{
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
AudioServicesPlaySystemSound(soundID);
}
// 停止播放
-(void)stopAlertSoundWithSoundID:(SystemSoundID)soundID 
{
AudioServicesDisposeSystemSoundID(kSystemSoundID_Vibrate);
AudioServicesDisposeSystemSoundID(soundID);
AudioServicesRemoveSystemSoundCompletion(soundID);
}