极光推送文档：https://docs.jiguang.cn/jpush/client/iOS/ios_api/#apns
// 前台收到推送消息，未点击情况执行
- (void)jpushNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(NSInteger))completionHandler;
// 点击推送消息获取信息
- (void)jpushNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)())completionHandler;
如果 App 状态为未运行，此函数将被调用，如果launchOptions包含UIApplicationLaunchOptionsRemoteNotificationKey表示用户点击apn 通知导致app被启动运行；如果不含有对应键值则表示 App 不是因点击apn而被启动，可能为直接点击icon被启动或其他。
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
// apn 内容获取：
NSDictionary *remoteNotification = [launchOptions objectForKey: UIApplicationLaunchOptionsRemoteNotificationKey];
}
设置Badge
value 取值范围：[0,99999]
+ (BOOL)setBadge:(int)value
设置badge值，本地仍须调用UIApplication:setApplicationIconBadgeNumber函数
调用此 API 来设置别名，支持回调函数
+ (void)setTags:(NSSet *)tags
alias:(NSString *)alias
fetchCompletionHandle:(void (^)(int iResCode, NSSet *iTags, NSString *iAlias))completionHandler;
例： 如果移除别名，alisa可以传空字符串
[JPUSHService setTags:nil alias:@"1" fetchCompletionHandle:^(int iResCode, NSSet *iTags, NSString *iAlias) {
if (iResCode == 0) {
//设置成功
}
}];