objective-c - 警告 ASIHttpRequest

Question

我在我的 iOS 应用程序中使用 ASIHTTPRequest。我这样做: .h

@interface MyClassr
    ASIFormDataRequest *currentRequest;
}

NSURL *url = [NSURL URLWithString:requestUrl];
currentRequest = [ASIFormDataRequest requestWithURL:url];
currentRequest.requestMethod=@"GET";
currentRequest.delegate =self;

[currentRequest setCompletionBlock:^{
    listesRestaurants = [XMLParser parseRestaurantResponse:[currentRequest responseData]];
    NSLog(@"%@",[currentRequest responseString]);
    if (apDelegate.modeGeoloc) {
        [map removeAnnotations:map.annotations];
        [self addAnnotation];
        [self calculDistance];
    }

我在行中有一个警告:[currentRequest setCompletionBlock:^//Block will be retained by an object strongly retained by the captured object

//在此 block 中强烈捕获'self'很可能导致保留循环

请问我该如何纠正这个警告？

Answer 1

您需要创建对自身的弱引用:

__weak MyClassr* blockSelf = self;

然后在您的 block 中使用该引用:

[blockSelf addAnnotation];
[blockSelf caculDistance];

等等