这是一个总的noob问题,但我正在测试AFNetworking2,特别是UIWebView + AFNetworking。但是我如何调用loadRequest。我有:
NSURL *websiteUrl = [NSURL URLWithString:@"http://www.google.com"]; //fine
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:websiteUrl]; //find
[self.myWebView loadRequest:urlRequest progress:(void (^)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite))^{ // do I need second carat?
//NSLog(@"writing bytes %i", bytesWritten); // how to get access to bytesWritten?
NSLog(@"writing bytes");
}....
但是我想要NSLog的bytesWritten。块语法总是抛出一个循环。我需要拨打第二个克拉吗?
以下是该电话的文档链接:http://cocoadocs.org/docsets/AFNetworking/2.0.3/Categories/UIWebView+AFNetworking.html
答案 0 :(得分:2)
这是正确的语法
[self.myWebView loadRequest:urlRequest progress:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite)){
NSLog(@"writing bytes %lu", (unsigned long)bytesWritten);
}];
答案 1 :(得分:1)
“第二克拉”约为。 400毫克。你要找的是“插入符号”。
这是传递文字块的方式:
[Foo doStuff:^(T1 arg1, T2 arg2) {
// and this is how you use the arguments:
NSLog(@"Arg 2: %@", arg2);
}];