xcode 错误 - 目标 C - '应用程序试图以模态方式呈现一个活动控制器 <splitViewDetailViewController:'
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/11012438/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Error - Objective C - 'Application tried to present modally an active controller <splitViewDetailViewController:'
提问by
I want to use UIImagePickerController to load photos from the photolibrary of the IPad Application. I am using the following line of code :
我想使用 UIImagePickerController 从 iPad 应用程序的照片库中加载照片。我正在使用以下代码行：
-(IBAction)photolibrarypressed:(id)sender{
// / Create window
//self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
NSLog(@"hi");
// Set up the image picker controller and add it to the view
//imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
//[window addSubview:imagePickerController.view];
//UIImagePickerController *picker= [[UIImagePickerController alloc]init];
//picker.delegate = self;
//picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
UIImagePickerController *picker= [[UIImagePickerController alloc]init];
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
picker.delegate = self;
UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:picker];
self.popoverController = popover;
popoverController.delegate = self;
[popoverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
[self presentModalViewController:picker animated:YES];
//[picker release];
imageView = [[UIImageView alloc] initWithFrame:[window bounds]];
// Set up the image view and add it to the view but make it hidden
[window addSubview:imageView];
imageView.hidden = YES;
[window makeKeyAndVisible];
}
But however, I am getting the following error :
但是，我收到以下错误：
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present modally an active controller <splitViewDetailViewController:
I am unable to understand it.
我无法理解。
The app is of SplitView Type and I have used WebView and ImageView simultaneously. So,when I click on the button photolibrary I need to go into the ImageView(I suppose).
该应用程序是 SplitView 类型，我同时使用了 WebView 和 ImageView。所以，当我点击按钮 photolibrary 时，我需要进入 ImageView（我想）。
Can someone please help me sort out the issue ?? I am pretty new to objective C. Thanks.
有人可以帮我解决问题吗？？我对目标 C 很陌生。谢谢。
采纳答案by jjv360
You've got the code for the iPhone and iPad running at the same time. If you're on an iPad, you should remove the line
您已经同时运行了 iPhone 和 iPad 的代码。如果您使用的是 iPad，则应删除该行
[self presentModalViewController:picker animated:YES];
and if you're on an iPhone or iPod you should remove the line
如果您使用的是 iPhone 或 iPod，则应删除该行
[popoverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
Alternatively if you want to run your app on both iPad and iPhone, use an if statement to find out which device it's running on:
或者，如果您想在 iPad 和 iPhone 上运行您的应用程序，请使用 if 语句来找出它在哪个设备上运行：
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
// Display in a popover for the iPad
[popoverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
} else {
// Display modally for the iPhone
[self presentModalViewController:picker animated:YES];
}
