uiimagepickercontroller

问题 I'm trying to create an IP Camera application for iPhone using mono touch. To get the camera feed, I call the CGImage.ScreenImage method continuously and convert the resulting UIImage into a byte array which is then transmitted across to the browser. The camera feed is displayed using a UIImagePickerController class by setting the SourceType = UIImagePickerControllerSourceType.Camera; Here are the complete code for the ImageController class: public class ImageController :

问题 I think this should be simple but I am having some difficulty implementing it. I take a photo from the camera, the user can then move and scale it. They then choose "use" and they get a preview of their image. Now what I want to do is overlay an image on top of this preview image - which is also ok. But the part I am having difficulty is then I want to save the photo taken WITH the image that is over it into the library. I just have a UIView with my overlay image about the UIView where my

问题 I have got a UIButton inside a UIView that I set as the cameraOverlayView. I also scaled the uiimagepicker cameraView to cover the whole screen (as you can see below in the picture). Here's my code : // CameraViewController.m - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. if(!self.imagePickerController) [self setupCamera]; } -(void)setupCamera{ self.imagePickerController = [[UIImagePickerController alloc] init]; self.imagePickerController

问题 This might seem too easy or maybe it's just confusing for me... Or maybe I'm too tired to think rationally. I am trying to get the location of an UIImage that has been selected by the user from the photo album using imagePickerController. - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { UIImage *pic = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; NSData *data = UIImageJPEGRepresentation(pic, 0.01f); UIImage

问题 I'm getting this really weird behaviour on iOS 9 with swift where I have a tableViewCell that opens an imagePicker when tapped on to take a picture of something, when you tap the cell for the first time it takes like 10 seconds to open the picker, but when you tap it twice it immediately opens... The initialisation code for the picker is as follows let certificateImagePicker = UIImagePickerController() certificateImagePicker.delegate = self certificateImagePicker.allowsEditing = false

问题 Screenshot UIImagePickerController was working very well on iOS 9.2, with a memory usage of 19m in my iPhone. Since iOS 9.3, I noticed that the memory usage is increasing to 300m and the application crashes. my code: import UIKit import MobileCoreServices class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate { override func viewDidLoad() { super.viewDidLoad() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() } func

问题 I upgraded project to Swift 3 and I am getting a crash on the line (at various points/viewControllers in the project) : present(picker, animated: true, completion: nil) in the function: @IBAction func userImage(_ sender: AnyObject){ print("button pressed") let picker = UIImagePickerController() picker.delegate = self picker.allowsEditing = false picker.sourceType = .photoLibrary present(picker, animated: true, completion: nil) // -> crashes here } func imagePickerController(_ picker:

问题 I upgraded project to Swift 3 and I am getting a crash on the line (at various points/viewControllers in the project) : present(picker, animated: true, completion: nil) in the function: @IBAction func userImage(_ sender: AnyObject){ print("button pressed") let picker = UIImagePickerController() picker.delegate = self picker.allowsEditing = false picker.sourceType = .photoLibrary present(picker, animated: true, completion: nil) // -> crashes here } func imagePickerController(_ picker:

问题 Edit : It has been suggested this post is a duplicate, which is not the case as the black bars are not initially present an an affine transformation does not remedy the problem. I run this on an iPad Air 2 and target iOS 8. I have a UIImagePickerController whose showsCameraControls property is set to NO . When starting the app in landscape and then zooming in, this is what happens (all images are non-cropped): A black bar appears and can be gotten rid of by changing device orientation to

问题 How do I take Picture without User Interaction or without presenting ImagePickerController UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init]; if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { [imagePickerController setSourceType:UIImagePickerControllerSourceTypeCamera]; } // image picker needs a delegate, [imagePickerController setDelegate:self]; // Place image picker on the screen [self