Mac OS 下载文件保存到下载目录

黄权浩

于 2018-11-20 14:22:54 发布

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分类专栏： iOS Mac OS

本文链接：https://blog.youkuaiyun.com/quanhaoH/article/details/84301159

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实现代理 NSURLSessionDataDelegate

    NSURL *url = [NSURL URLWithString:@""];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:self delegateQueue:[NSOperationQueue mainQueue]];
    NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request];
    
    [dataTask resume];


#pragma mark - NSURLSessionDataDelegate
//此处可以获取下载文件信息
-(void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveResponse:(NSURLResponse *)response completionHandler:(void (^)(NSURLSessionResponseDisposition))completionHandler
{
    //在该方法中可以得到响应头信息，即response
    NSLog(@"didReceiveResponse--%@",[NSThread currentThread]);
    
    //注意：需要使用completionHandler回调告诉系统应该如何处理服务器返回的数据
    //默认是取消的
    
    completionHandler(NSURLSessionResponseAllow);
}