objective-c - 保护开关中的 shell

这个问题已经在这里有了答案:




9年前关闭。






得到了以下xcode:
但是，当我尝试在情况1(或空)中放入某些东西时，这给我一个错误吗？

奇怪的问题，因为我不知道什么是 protected 交换机以及如何修复它。有谁有解决方案或线索来解决此问题？奇怪的..

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    UIViewController *controller;

    switch(indexPath.row) {
        case 0:
            NSLog(@"0");

            //create instance of EKEventStore
            EKEventStore *eventStore = [[EKEventStore alloc] init];

            //creating instance of EKEvent
            EKEvent *event  = [EKEvent eventWithEventStore:eventStore];

            //setting the appropriate properties of the new event
            event.title     = @"Woow";

            //event.startDate = [[NSDate alloc] init];



            NSDateComponents *myDate2 = [[NSDateComponents alloc] init];
            [myDate2 setDay:13];
            [myDate2 setMonth:12];
            [myDate2 setYear:2011];
            [myDate2 setHour:00];
            [myDate2 setMinute:34];

            event.startDate = [[NSCalendar currentCalendar] dateFromComponents:myDate2];

            event.endDate   = [[NSDate alloc] initWithTimeInterval:3600 sinceDate:event.startDate];
            event.location = @"game2";
            event.notes = @" game";

            event.alarms = [NSArray arrayWithObject:[EKAlarm alarmWithAbsoluteDate:event.startDate]];

            [event setCalendar:[eventStore defaultCalendarForNewEvents]];
            NSError *error;
            [eventStore saveEvent:event span:EKSpanThisEvent error:&error];

            break;

        case 1:
            NSLog(@"1");






            break;






    }

    {



        self.EKController.title = [self.EKList objectAtIndex:[indexPath row]];






    }

}


@end

但是有一个错误:

最佳答案

您应该用{}大括号包装每个switch语句。例如:

switch (someInt) {
    case 0:
    {
        NSLog(@"Case 0");
    }
    break;
    case 1:
    {
        NSLog(@"Case 1");
    }
    break;
}

已经在这里回答了这个问题-When converting a project to use ARC what does "switch case is in protected scope" mean?

关于objective-c - 保护开关中的 shell ，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/8482678/