iphone - 在警报中显示当前 View Controller 的名称

Question

如果屏幕上显示的 View Controller 是“PrimaryViewController”，我正在尝试显示警报我不确定如何获取 View Controller 的名称，然后将其转换为 NSString ...任何帮助将不胜感激! !!

//get name of current view controller
UIViewController *currentVC = self.navigationController.visibleViewController;
if ([currentVC isEqualToString:@"PrimaryViewController"])
{
    //display name of current view controller in alert    
    UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:@"Your current view controller:" message:currentVC delegate:nil 
cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];
}

Answer 1

您可以使用 NSStringFromClass() .它以字符串形式返回类的名称。

示例代码:

if ([NSStringFromClass([currentVC class]) isEqualToString:@"PrimaryViewController"])
{
    UIAlertView *alert = [[UIAlertView alloc]
    initWithTitle:@"Your current view controller:" message:NSStringFromClass([currentVC class]) delegate:nil 
    cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];
}