iphone - UIAlertView 按钮到另一个 View Controller

Question

我的应用程序中有一个 uialertview，它有两个按钮，第一个是取消按钮，第二个可以。当我按下确定按钮时，我想转到具有 Storyboard标识符“RootView”的 View Controller ，但它不起作用。我将此代码放在 appdelegate.m 方法中。

- (void)showAlarm:(NSString *)text {
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"show alarm"
                                                            message:text delegate:self
                                                  cancelButtonTitle:@"cancel"
                                                  otherButtonTitles:@"ok", nil];


        [alertView show];
    }

    - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

        if (buttonIndex == 0){
             NSLog(@"cancel"); 

        }else if (buttonIndex == 1){
             NSLog(@"ok");
           UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPhone" bundle:[NSBundle mainBundle]];


           UINavigationController *navigationController = [storyboard instantiateViewControllerWithIdentifier:@"navigationController"];


            [navigationController presentViewController:[storyboard instantiateViewControllerWithIdentifier:@"RootView"] animated:YES completion:nil];


        }
    }

Answer 1

你想插入新的 View Controller 或以模态方式呈现它吗？假设最后一个，也许这对你有帮助:

RootView *viewController = [storyboard instantiateViewControllerWithIdentifier:@"RootView"];
UINavigationController *navigationController = [UINavigationController alloc] initWithRootViewController:viewController];
[self presentViewController:navigationController animated:YES completion:nil];