相关疑难解决方法(0)

我只在iOS 7中收到此错误并且应用程序崩溃了.在iOS 6中,我从未收到任何错误,只是在打开相机时出现内存警告.

Snapshotting a view that has not been rendered results in an empty snapshot. Ensure your view has been rendered at least once before snapshotting or snapshot after screen updates.

这就是我在做的事情.

imagePicker = [[UIImagePickerController alloc] init];
[imagePicker setDelegate:self];
[imagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
[imagePicker setAllowsEditing:YES];

[self presentModalViewController:imagePicker animated:YES];

我确实试图延迟presentModalViewController,但我仍然得到相同的消息.几秒钟后(7-10),应用程序崩溃了.

此错误仅出现在iOS 7中.

有人有线索吗？先感谢您.

这个问题再问一次，但我找不到ios 10

if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera)
 {
            self.imagePicker.delegate = self
            self.imagePicker.sourceType = UIImagePickerControllerSourceType.camera;
            self.imagePicker.allowsEditing = false
            self.imagePicker.cameraCaptureMode = .photo
            //self.imagePicker.modalPresentationStyle = UIModalPresentationStyle.overCurrentContext
            self.present(self.imagePicker, animated: true, completion: nil)
            self.imagePicked.isUserInteractionEnabled = true

 }
else
 {
            print("No Camera")
 }

对未渲染的视图进行快照会导致快照为空。请确保在快照之前至少对视图进行一次渲染或在屏幕更新后进行快照。

当我旋转相机拍摄照片时，会发生此错误。