'ViewController'没有可见的@interface声明选择器'presentModalViewController：animated：completion：'

Question

我正在使用此代码以编程方式切换视图控制器。当我构建并运行时，我收到此错误：@interface没有可见的ViewController声明选择器presentModalViewController:animated:completion:

代码：

[self presentModalViewController:pSearchViewController animated:YES completion:nil];

如果我摆脱完成：nil然后我得到警告presentModalViewController:animated已被弃用：首先在iOS 6.0中弃用。我该怎么办？

Answer 1

问题是presentmodalviewcontroller:已弃用。请改用presentViewController:animated:completion:。你的代码：

[self presentViewController:pSearchViewController animated:YES completion:nil];

Answer 2

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

     if (buttonIndex==1){
         UIViewController *newview = [[UIViewController alloc]init];
         [self presentedViewController:newview animated:YES completion:nil];
     }

}