NSUrlConnection 委托方法未从助手 class 中调用

Question

我必须进行 SSL 固定，因此需要验证服务器端 SSL 证书。 所以我必须使用 NSURL 委托。我有一个助手 class，我在其中创建了 returns 我登录响应的方法：

- (NSData *)sendSynchronousRequest:(NSString *)strNewLoginRequest
             returningResponse:(NSURLResponse **)response
                         error:(NSError **)error {
NSMutableURLRequest *finalRequest = nil;

NSURL *url= [NSURL URLWithString:const_url];

finalRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30.0];

NSData *requestData = [NSData dataWithBytes:[strLoginRequest UTF8String] length:[strLoginRequest length]];

    self.connection = [[NSURLConnection alloc] initWithRequest:finalRequest delegate:self startImmediately:NO];

    NSRunLoop *currentRunLoop = [NSRunLoop currentRunLoop];
    [self.connection unscheduleFromRunLoop:currentRunLoop forMode:NSDefaultRunLoopMode];
    [self.connection scheduleInRunLoop:currentRunLoop forMode:@"connectionRunLoopMode"];

    [self.connection start];

    while ([currentRunLoop runMode:@"connectionRunLoopMode" beforeDate:[NSDate distantFuture]]);

    return self.mutableResponse;
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    self.response = response;
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    self.mutableResponse = [[NSMutableData alloc]init];
    [self.mutableResponse appendData:data];

}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    dispatch_async(dispatch_get_main_queue(), ^{

    if (loadingView)
    {
        [loadingView removeView];
    }

    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Failure" message:@"Network Failure" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

        [alert show];
    });
}

 - (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    if (loadingView)
    {
        [loadingView removeView];
    }
    self.resultString = [[NSString alloc] initWithData:self.mutableResponse      encoding:NSASCIIStringEncoding];
}

我正在从另一个名为 ViewController 的 class 调用此方法，代码为

-(void)doLogin
{
 self.service = [[SyncCommunicationService alloc]init];
 NSData *data = [self.service sendSynchronousRequest:strNewLoginRequest
                                  returningResponse:&response
                                              error:nil];
}

我已经尝试在后台和主线程上调用此方法，但仍然没有调用委托方法，我已经尝试了同一网站上的许多其他答案，但仍然无法解决此问题，所以请问有没有人可以提示我做错了什么。

Answer 1

我想知道为什么有人会使用异步请求来同步执行任务？更不用说这种用 while 语句而不是 dispatch_semaphore 或类似的东西来等待的奇怪方式了。

但是，你为什么还要费心委托呢？只需使用 class 方法 sendSynchronousRequest:returningResponse:error:.我想，你的情况就足够了

NSUrlConnection 委托方法未从助手 class 中调用

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