UIImagePickerController with allowsEditing doesn't allow panning to crop

问题

I saw this question here: UIImagePicker allowsEditing stuck in center

It seems someone had this problem before, but there's no clear resolution.

Reproduction steps:

1. Set allowsEditing = YES
2. Take a picture
3. Crop window comes up, but everytime I pan the image, it just snaps back to the center.

I'm on iOS 7.0.3.

Here's my code:

UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];

imagePicker.delegate = self;
imagePicker.modalPresentationStyle = UIModalPresentationCurrentContext;
imagePicker.allowsEditing = YES;
[self presentViewController:imagePicker animated:YES completion:nil];

回答1:

You just need to write bellow single line of code.

UIImage *image = [info valueForKey:UIImagePickerControllerEditedImage];

回答2:

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
            picker.delegate = self;
            picker.allowsEditing = YES; // YES
            picker.sourceType = UIImagePickerControllerSourceTypeCamera;
            [self presentViewController:picker animated:YES completion:NULL];

try this i think you are missing the UIImagePickerControllerSourceTypeCamera on the sourceType. see if it works.

来源：https://stackoverflow.com/questions/20000273/uiimagepickercontroller-with-allowsediting-doesnt-allow-panning-to-crop