- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken{  [UMessage registerDeviceToken:deviceToken];  NSString *tokenStr = [[[[deviceToken description] stringByReplacingOccurrencesOfString: @"<" withString: @""]              stringByReplacingOccurrencesOfString: @">" withString: @""]             stringByReplacingOccurrencesOfString: @" " withString: @""];  self.device_token = tokenStr;  NSLog(@"%@",tokenStr);}