不会从辅助类调用NSUrlConnection委托方法

时间:2015-06-18 07:36:34

标签: ios delegates nsurlconnection nsurlconnectiondelegate

我必须执行SSL固定,因此需要验证服务器端SSL证书。 所以我必须使用NSURL代表。我有一个帮助器类,我在其中创建了一个返回登录响应的方法:

- (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];
}

我从另一个名为ViewController的类中使用代码

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

我试过在后台和主线程上调用这个方法,但仍然没有调用委托方法,我已经尝试了很多来自同一网站的其他答案,但仍然无法解决这个问题所以请任何人都可以我知道我做错了什么。

1 个答案:

答案 0 :(得分:1)

我想知道为什么有人会使用异​​步请求同步执行任务?更不用提这种奇怪的方式来等待while语句而不是dispatch_semaphore或类似的东西。

然而,为什么你甚至打扰委托?只需使用类方法sendSynchronousRequest:returningResponse:error:。我认为,在你的情况下就足够了