iOS SDK

            // Set App Group ID (please replace with your actual App Group ID).
  [MTPushService setAppGroupId:@"group.jiguang.hxhg"];

  // Enable the text-to-speech feature for push notifications.
  [MTPushService enablePushTextToSpeech:YES];

  // In your notification extension:

  // Set App Group ID in the notification extension.
  [MTNotificationExtensionService mtpushSetAppGroupId:@"group.jiguang.hxhg"];

  // Set site name, for example "Singapore".
  [MTNotificationExtensionService setSiteName:@"Singapore"];

  // Set Appkey (please replace with your actual Appkey).
  [MTNotificationExtensionService mtpushSetAppkey:@"dab1134204a962d4ca905cce"];

  // Log the start of processing the voice file.
  NSLog(@"start - Begin processing voice file");

  // Process the voice.
  [MTNotificationExtensionService handleVoice:request with:^(NSString *soundName) {

    // Assign a custom sound to the notification.
    self.bestAttemptContent.sound = [UNNotificationSound soundNamed:soundName];

    // Log the end of processing the voice file.
    NSLog(@"stop - End processing voice file");

    // Process the notification request.
    [MTNotificationExtensionService mtpushReceiveNotificationRequest:request with:^ {

      // Log the successful upload to APNS.
      NSLog(@"apns upload success");

      // Complete the modification of the notification content.
      self.contentHandler(self.bestAttemptContent);

    }];
  }];