Ios 警告：试图显示<；UIImagePickerController:0x7ca5dc00>；on<；UIViewController:0x7b9cac00>；已显示的（空）

我在使用iPad时犯了这个错误。但iPhone是有效的。请分享解决方案。我的代码如下

-(void)pickImageFromLibrary
{

    UIImagePickerController *picker10 = [[UIImagePickerController alloc] init];
    picker10.delegate = self;
    picker10.allowsEditing = YES;
    picker10.view.tag=100;


        picker10.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

    [self presentViewController:picker10 animated:YES completion:NULL];


}

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UIImagePickerCopController必须在iPad的popover中显示。看看iPad的以下代码：

    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
    UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:picker];
    [popover presentPopoverFromRect:self.selectedImageView.bounds inView:self.selectedImageView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    self.popOver = popover;
} else {
    [self presentModalViewController:picker animated:YES];
}

不要忘记为popover添加强属性：

@property (nonatomic, strong) UIPopoverController *popOver;

以下是取消它的委托方法：

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 

-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

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这里是指向类参考的链接，以获取更多信息：

您应该尝试此代码

[self.presentedViewController dismissViewControllerAnimated:NO completion:nil];

请提供更多信息。“仅编码”和“尝试此”答案是错误的，因为它们不包含可搜索的内容，并且没有解释为什么有人应该“尝试此”。我们在这里努力成为知识的资源。也许这会对你有所帮助