这是在主菜单上使用的代码，当用户按下播放键时，但是当显示该屏幕时 (ViewController.m) 它会显示错误
警告:尝试呈现不在窗口层次结构中的 View !
-(IBAction)play:(id)sender
{
if(IS_IPAD)
{
ViewController *view_obj = [[ViewController alloc]initWithNibName:@"ViewController_iPad" bundle:[NSBundle mainBundle]];
[self presentViewController:view_obj animated:YES completion:nil];
}
else if ([AISGlobal isIphone5thGeneration])
{
ViewController *view_obj = [[ViewController alloc]initWithNibName:@"ViewController_iPhone5" bundle:[NSBundle mainBundle]];
[self presentViewController:view_obj animated:YES completion:nil];
}
else
{
ViewController *view_obj = [[ViewController alloc]initWithNibName:@"ViewController_iPhone" bundle:[NSBundle mainBundle]];
[self presentViewController:view_obj animated:YES completion:nil];
}
}
在 AppDelegate.m 文件中，它在“didFinishLaunchingWithOptions”部分显示了这一点；
if(IS_IPAD)
{
self.start_screen_obj = [[Start_screen alloc] initWithNibName:@"Start_screen" bundle:nil];
}
else if ([AISGlobal isIphone5thGeneration])
{
self.start_screen_obj = [[Start_screen alloc] initWithNibName:@"Start_screen_iphone5" bundle:nil];
}
else
{
self.start_screen_obj = [[Start_screen alloc] initWithNibName:@"Start_screen_iphone" bundle:nil];
}
self.start_screen_obj.view.multipleTouchEnabled = YES;
self.window.rootViewController = self.start_screen_obj;
[self.window makeKeyAndVisible];
最佳答案
尝试在 View Controller 的 viewDidAppear 方法中编写您的代码，因为直到那时您的 View 才刚刚创建，并没有添加到 View 层次结构中。
关于ios - 尝试在其 View 不在窗口层次结构中的 ViewController 上呈现，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31139515/