摘要： 本来在下载完成之后，在UIImageWriteToSavedPhotosAlbum 里面响应image: (UIImage*) imagedidFinishSavingWithError: (NSError*) error contextInfo: (void*) contextInfo这个函数，然后来更新UI的，但是操作比较繁琐，而且UI的更新总是无法同步。所以采用GCD的方式，来完成，非常顺畅。- (void)downloadImageToPhotoAlbum{ [self.viewaddSubview:downloadingView]; dispatch_async(dispatch.. 阅读全文

摘要： 报错为：TTRequestLoader connection:didReceiveResponse:](354): TTDASSERT failed: 0 == _queue.maxContentLength || contentLength <=_queue.maxContentLength解决方法：// If you hit this assertion it's because a massive file is about to be downloaded. // If you're sure you want to do this, add the follow 阅读全文