NSURLSessionDataTask *theURLSessionDataTask = [[NSURLSession sharedSession] dataTaskWithURL:[NSURL URLWithString:url] completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {

WXFileObject *fileObject = [WXFileObject object];

fileObject.fileData = data;

fileObject.fileExtension = fileExtension;

WXMediaMessage *message2 = [WXMediaMessage message];

message2.mediaObject = fileObject;

message2.title = [NSString stringWithFormat:@"%@.%@",title,fileExtension];

message2.description = description;

SendMessageToWXReq *req = [[SendMessageToWXReq alloc] init];

req.bText = NO;

req.message = message2;

req.scene = WXSceneSession;

[WXApi sendReq:req completion:^(BOOL success) {

}];

}];

[theURLSessionDataTask resume];