Since iOS 9 and Xcode 7 I am no longer able to implemet a UIImagePickerController on an iPad (both device and simulator). The code below works on the iPad but only prior to iOS 9. When using iOS 9+ the presented image (after the UIImagePickerController is dismissed) is an incorrect version of the selected image. Without re-sizing or cropping the final image is only the top right corner of the original image ?? Plus another problem - If imagePicker.allowsEditing = false, you are unable to select images from the PhotoLibrary ??
@IBAction func photoButton(sender: AnyObject) {
imagePicker.allowsEditing = true
imagePicker.sourceType = .PhotoLibrary
self.presentViewController(imagePicker, animated: false, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
if let pickedImage = info[UIImagePickerControllerEditedImage] as? UIImage {
self.imageView.image = pickedImage
dismissViewControllerAnimated(true, completion: { () -> Void in
})
}
Heres an example of a selected image presented in a UIImagePickerController. (notice how the selected image is presented very small and not full size/width of screen as before)
After selecting the use button within the UIImagePickerController the final image is only the top right of the original image. What am I doing wrong or is UIImagePickerController broken on iOS 9 ?
This is a bug from Apple: http://openradar.appspot.com/radar?id=5032957332946944
Current lousy workaround:
if UIDevice.currentDevice().userInterfaceIdiom == .Pad {
imagePicker.allowsEditing = false
} else {
imagePicker.allowsEditing = true
}
Swift 3.0:
if UIDevice.current.userInterfaceIdiom == .pad {
}
Refer the below coding
@IBAction func photoButton(sender: AnyObject)
{
if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera))
{
picker!.sourceType = UIImagePickerControllerSourceType.Camera
self .presentViewController(picker!, animated: true, completion: nil)
}
else
{
let alertWarning = UIAlertView(title:"Warning", message: "You don't have camera", delegate:nil, cancelButtonTitle:"OK", otherButtonTitles:"")
alertWarning.show()
}
}
func openGallary()
{
picker!.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
self.presentViewController(picker!, animated: true, completion: nil)
}
//PickerView Delegate Methods
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject])
{
picker .dismissViewControllerAnimated(true, completion: nil)
imageView.image=info[UIImagePickerControllerOriginalImage] as? UIImage
}
func imagePickerControllerDidCancel(picker: UIImagePickerController)
{
println("picker cancel.")
}
You need to make sure you have the correct frame for your imageview and the contentmode for your imageview should be aspectfit and the image returned by the picker is of type [UIImagePickerControllerOriginalImage]
[imageView setFrame:imageViewRect];
[imageView setContentMode:UIViewContentModeScaleAspectFit];
Swift:
imageView.setFrame(imageViewRect)
imageView.setContentMode(UIViewContentModeScaleAspectFit)
and coming to the allowsEditing property, It is not related to photo selection.
It is a Boolean value indicating whether the user is allowed to edit a selected still image or movie.
If you want to select photos from camera library, then you need to modify the source type to
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
Update:
LEts say you have selected one image and display it on the image view. I assume you have one imageview on the view, and the imageview frame is equal to the view frame. If the IB is of freeform , I assume the size 600x600 for the imageview frame in the IB.
if you simply do:
_startImageView.image=_img;
The result will be:
Now let's make some changes to the image to be displayed in the imageview:
CGRect scaledRect = AVMakeRectWithAspectRatioInsideRect(_img.size, CGRectMake(0, 0, self.startImageView.frame.size.width, self.startImageView.frame.size.height));
UIGraphicsBeginImageContext(CGSizeMake(_startImageView.frame.size.width,_startImageView.frame.size.height));
[_img drawInRect:scaledRect];
UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
_startImageView.image=scaledImage;
and now the image will be:
The original image choosen is of size 640x426, when not scaled.
The original image choosen is of size 1536x1286 when scaled to max(with two finger zoom action).
As you can see, still there is no huge change in the image, it is because the image is already cropped/scaled by the time your imageview recieved the image!!!
So even though you try to do:
[_img drawInRect:_startImageView.frame];
The image will not be drawn as per our need, as the image is already scaled right at them moment as the image given by the picker is the edited image.
Solution:
To fix this, you need to select the original image from picker in didFinishPickingMediaWithInfo: method
info[UIImagePickerControllerOriginalImage];
which gives you the image:
This code is relatively similar to @pkc456, just a little shorter.
This works perfectly for me:
import UIKit
class PostImageViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
@IBOutlet var imageToPost: UIImageView!
@IBAction func chooseImage(sender: AnyObject) {
var image = UIImagePickerController()
image.delegate = self
image.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
image.allowsEditing = false //or true additional setup required.
self.presentViewController(image, animated: true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {
self.dismissViewControllerAnimated(true, completion:nil)
}
Does this work?
I am working on xcode 7.1(Swift) and found your code appropriate. I also wrote the below code on my project and it is working successfully.
func showPicker(){
let type = UIImagePickerControllerSourceType.PhotoLibrary
if(UIImagePickerController.isSourceTypeAvailable(type)){
let pickerController = UIImagePickerController()
pickerController.delegate = self
pickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
pickerController.allowsEditing = false
self.presentViewController(pickerController, animated: true, completion: nil)
}
}
func imagePickerController(picker: UIImagePickerController!, didFinishPickingImage image: UIImage!, editingInfo: NSDictionary!) {
let imageView = self.view.viewWithTag(20) as! UIImageView
let selectedImage : UIImage = image
imageView.image=selectedImage
self.dismissViewControllerAnimated(true, completion: nil)
}
The only difference in your code and my code is about visibility of ImagePickerController instance. For your reference, I upload my code at:-
https://www.dropbox.com/s/pe0yikxsab8u848/ImagePicker-Swift.zip?dl=0
My idea is just look at my code once, may be you will get an idea about which section of your code malfunctioning.
It seems like you are using IB and auto layout but have set a right constraint. Try to add some constraint in your storyboard.
for me I was solved, showing mode as popover
@IBAction func photoButton(sender: AnyObject) {
imagePicker.allowsEditing = true
imagePicker.sourceType = .PhotoLibrary
let controller = self.imagePicker
controller.modalPresentationStyle = UIModalPresentationStyle.Popover
controller.modalTransitionStyle = UIModalTransitionStyle.CoverVertical
let popover = controller.popoverPresentationController
popover?.sourceView = self
controller.preferredContentSize = CGSize(
width: self.frame.width * 0.6,
height: self.frame.height * 0.6
)
popover?.sourceRect = CGRectMake(
CGRectGetMidX(self.bounds),
CGRectGetMidY(self.bounds),
0,
0
)
self.presentViewController(self.imagePicker, animated: true, completion: nil)
}
来源：https://stackoverflow.com/questions/33309085/uiimagepickercontroller-on-ipad-with-ios9