Question

如何在objective-c中为我的窗口中的关闭按钮分配操作？例如，用户单击关闭按钮然后程序询问：“你真的想要关闭窗口吗？”

Answer 1

如果要在Application中关闭视图之前添加消息，则需要在其中实现UIAlertView，不要忘记添加＆lt; UIAlertViewDelegate＆GT;在.h文件中

按下

代码操作按钮;

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Message" 
                                                message:@"Do you really want to close the window?" 
                                                delegate:self 
                                                cancelButtonTitle:@"OK" 
                                                otherButtonTitles:nil];
[alert show];

如果您想在单击按钮时执行某些操作，请实现此委托方法：

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
        // the user clicked OK
        if (buttonIndex == 0) {
            // Write Close Code here.....

   }
}

Answer 2

定义uialertview

UIAlertView *message;
message= [[UIAlertView alloc] initWithTitle:@"LOGOUT!" message:@"Are you sure to Logout of This app?" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
         case :
    {

                 [message show];
                 vc = [mainStoryboard instantiateViewControllerWithIdentifier:@"loginVC"];
                 [[SlideNavigationController sharedInstance] popAllAndSwitchToViewController:vc withCompletion:nil];
                                  break;}

                        }
                        default:

                            break;

    }

关闭窗口之前的Objective-c动作

2 个答案: