方法一：
跳转到下一个界面：PresentViewController
//触摸屏幕的响应事件 调用方法 touch
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
NextViewController *nextVc = [[NextViewController alloc]init];//初始化下一个界面
[self presentViewController:nextVc animated:YES completion:nil];//跳转到下一个界面
}
返回上一个界面：dismissViewControllerAnimated
/触摸屏幕响应事件
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
[self dismissViewControllerAnimated:YES completion:nil];//返回上一页面
}
