Hook block！！！！！！

[lgq2015]

• (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
  completionHandler:(void (^)(NSData *data,NSURLResponse *response,NSError *error))completionHandler 这个completionHandler应该如何hook?

[AloneMonkey]

正向问题 下一位

[lgq2015]

如何讲？您觉得是很简单吗？

[lgq2015]

%hook NSURLSession

• (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
  completionHandler:(void (^)(NSData *data,NSURLResponse *response,NSError *error))completionHandler {

  void (^replacedCompletion)(NSData *,NSURLResponse *,NSError *) = ^void(NSData *newData,
  NSURLResponse *newResponse,
  NSError *newError) {

        NSString *responseString = [[NSString alloc] initWithData:newData encoding:NSUTF8StringEncoding];
        NSLog(@"responseString %@",responseString);
        completionHandler(newData, newResponse, newError);
    };
    
    return %orig(request, replacedCompletion);
  

  }

%end

[lgq2015]

hi 这个似乎没那么简单

[lgq2015]

%hook NSURLSession

• (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
  completionHandler:(void (^)(NSData *data,NSURLResponse *response,NSError *error))completionHandler {

  void (^replacedCompletion)(NSData *,NSURLResponse *,NSError *) = ^void(NSData *newData,
  NSURLResponse *newResponse,
  NSError *newError) {

        NSString *responseString = [[NSString alloc] initWithData:newData encoding:NSUTF8StringEncoding];
        NSLog(@"responseString %@",responseString);
        completionHandler(newData, newResponse, newError);
    };
    
    return %orig(request, replacedCompletion);
  

  }

%end

这么hook 有问题，知道哪里错了吗？

[AloneMonkey]

什么问题

NSLog(@“responseString %@”,responseString);

没有打印？

[lgq2015]

在iphone6上闪退！completionHandler可能已经释放了

[AloneMonkey]

先copy

[lgq2015]

试过了 不闪退了 但是程序执行不下去了

[Zhang]

你猜！！！！！！

[Zhang]

想不到吧

神恶魔