我正在运行Apple的以下示例代码 -
NSString *requestURL = [[NSString alloc] initWithString:@"http://google.com/"];
NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:requestURL] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if(theConnection) {
NSLog(@"The connection has started...");
} else {
NSLog(@"Connection has failed...");
}
但是下面的委托方法没有被调用。有人可以帮帮我吗?
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
答案 0 :(得分:3)
如果您在后台线程上执行此操作,则可以在调用委托之前退出该线程。在调用触发后台线程CFRunLoopRun()的方法之后,调用刚启动传输的方法。然后在您的回调connectionDidFinishLoading:
和connection:didFailWithError:
中确保您也运行:
CFRunLoopStop(CFRunLoopGetCurrent());
在这些方法结束时,否则你永远不会回来。
答案 1 :(得分:1)
您是否正在设置代理人?在该代码所在的类接口中,添加<NSURLConnectionDelegate>
例如:
@interface myClass : parentClass<NSURLConnectionDelegate>
祝你好运!