IOS build error: No visible @interface for 'DBFILESUserAuthRoutes' declares the selector 'uploadData

Still I don't know why it encountered this error,,,

No visible @interface for 'DBFILESUserAuthRoutes' declares the selector 'uploadData:mode:autorename:clientModified:mute:inputData:'

DBUserClient * client = [DBClientsManager authorizedClient ];
DBFILESWriteMode *mode = [[DBFILESWriteMode alloc] initWithOverwrite];
    [[[client.filesRoutes uploadData:@"/test/path/in/Dropbox/account/my_output.txt"
                                 mode:mode
                           autorename:@(YES)
                       clientModified:nil
                                 mute:@(NO)
                            inputData:fileData]
       setResponseBlock:^(DBFILESFileMetadata *result, DBFILESUploadError *routeError, DBRequestError *networkError) {
           if (result) {
               NSLog(@"%@\n", result);
           } else {
               NSLog(@"%@\n%@\n", routeError, networkError);
           }
       }] setProgressBlock:^(int64_t bytesUploaded, int64_t totalBytesUploaded, int64_t totalBytesExpectedToUploaded) {
           NSLog(@"\n%lld\n%lld\n%lld\n", bytesUploaded, totalBytesUploaded, totalBytesExpectedToUploaded);
       } ] ;

   I compared the demo with these codes and they are the same.  Really need help!

Zoey03 To clarify, did you solve this, or do you still need help? You marked your last reply as a solution.

Anyway, I recommend just letting Xcode autocomplete the method call, as that will give you the definition for the version of the SDK you have installed.

It sounds like you're referring to this sample, which is now out of date. (I'll ask the team to update that.) It's just missing the new propertyGroups parameter, to which you can pass nil if you're not using that feature. So, an updated version would look like:

NSData *fileData = [@"file data example" dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO];

// For overriding on upload
DBFILESWriteMode *mode = [[DBFILESWriteMode alloc] initWithOverwrite];

[[[client.filesRoutes uploadData:@"/test/path/in/Dropbox/account/my_output.txt"
                            mode:mode
                      autorename:@(YES)
                  clientModified:nil
                            mute:@(NO)
                  propertyGroups:nil
                       inputData:fileData]
  setResponseBlock:^(DBFILESFileMetadata *result, DBFILESUploadError *routeError, DBRequestError *networkError) {
      if (result) {
          NSLog(@"%@\n", result);
      } else {
          NSLog(@"%@\n%@\n", routeError, networkError);
      }
  }] setProgressBlock:^(int64_t bytesUploaded, int64_t totalBytesUploaded, int64_t totalBytesExpectedToUploaded) {
      NSLog(@"\n%lld\n%lld\n%lld\n", bytesUploaded, totalBytesUploaded, totalBytesExpectedToUploaded);
  }];