在try catch块中打印NSError

I was curious if anyone knew how to use a try catch in objective c in order to print out a possible NSError received from a synchronousRequest.

我很好奇是否有人知道如何在目标c中使用try catch以打印出从synchronousRequest接收的可能的NSError。

The error that I am receiving is due to a non valid memory address. my try catch looks like

我收到的错误是由于无效的内存地址。我试试看起来像

@try{
    NSLog(@"%@", err);
 }@catch(NSException *e){
    NSLog(@"No error thrown");
 }

1 个解决方案

#1

The @catch block should contain the code that you want to run if there is an error.

@catch块应包含在出现错误时要运行的代码。

@try {
  // Do the request
  NSLog(@"No error thrown");
} @catch (NSException *e) {
  NSLog(@"%@", err);
}