我的应用运行wi-fi但不支持蜂窝网络。如何解决这个问题？
[NSURLConnection sendSynchronousRequest:req returningResponse:&res error:&err];
Unknown thread crashed with unknown flavor: 5, state_count: 1
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答案 0 :(得分：1)
我注意到您正在执行同步请求。如果请求需要很长时间，您的应用可能会强制退出。
尝试使用异步请求。
[NSURLConnection connectionWithRequest:request delegate:self];
并实现委托方法：
-(void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response;
-(void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;
-(void) connectionDidFinishLoading:(NSURLConnection *)connection;