IOS異常處理

    NSException* ex = [[NSException alloc] initWithName:@"ExceptionName"   // just for test                                                 reason:@"XXX"                                               userInfo:nil];    //    CustomNSException* ex = [[CustomNSException alloc] initWithName:@"CustomNSExceptionName"   // just for test//                                                             reason:@"XXX"//                                                           userInfo:nil];//        @try {        bool error = YES;        if (error) {            @throw ex;        }    }    //    @catch ( CustomNSException *exception ) {//        NSLog(@"CustomNSException.name = %@" , CustomNSException.name);//        NSLog(@"CustomNSException.reason = %@" , CustomNSException.reason);//        //        // 彈出警告框，提示異常資訊//        UIAlertView* alert = [[UIAlertView alloc] initWithTitle:CustomNSException.name//                                                        message:CustomNSException.reason//                                                       delegate:nil//                                              cancelButtonTitle:nil//                                              otherButtonTitles:nil];//        //        [alert show];//        [alert release];//    }        @catch ( NSException *exception ) {        NSLog(@"exception.name = %@" , exception.name);        NSLog(@"exception.reason = %@" , exception.reason);    }        @finally {        NSLog(@"@finally");    }