文件上传及进度显示

NSString *urlString = [NSString stringWithFormat:@"%@api/?method=gdb.send_talk",BASEURL];//你的URL

NSDictionary *dict = @{@"type":[NSString stringWithFormat:@"%d",pvtype],@"content":_textView.text};//需要传的dict,没有写nil

AFHTTPRequestSerializer *serializer = [AFHTTPRequestSerializer serializer];
NSMutableURLRequest *request = [serializer multipartFormRequestWithMethod:@"POST" URLString:urlString
parameters:dict
constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
// 设置时间格式
formatter.dateFormat = @"yyyyMMddHHmmss";
NSString *str = [formatter stringFromDate:[NSDate date]];
//按时间给传的文件命名
NSString *imageName = [NSString stringWithFormat:@"%@.jpg", str];
NSString *videoName = [NSString stringWithFormat:@"%@.mp4", str];

[formData appendPartWithFileData:videoData name:@"video" fileName:videoName mimeType:@"mp4"];//传视频 videoData  视频所在的data
[formData appendPartWithFileData:image_data name:@"image" fileName:imageName mimeType:@"jpg"];//传图片 imageData 图片所在的data

}];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
AFHTTPRequestOperation *operation =
[manager HTTPRequestOperationWithRequest:request
success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"Success %@", responseObject);
[self.navigationController popViewControllerAnimated:YES];

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Failure %@", error.description);
}];
[operation setUploadProgressBlock:^(NSUInteger __unused bytesWritten,
long long totalBytesWritten,
long long totalBytesExpectedToWrite) {

NSLog(@"传了%.2fMB/共 %.2fMB",totalBytesWritten/1024.0/1024.0,totalBytesExpectedToWrite/1024.0/1024.0);

}];
[operation start];