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Я собираю изображение, которое затем помещается в небольшое изображение. Изображение не размыто в маленьком изображенииView, но когда я копирую его в буфер обмена, я изменяю размер изображения так, чтобы он был такого же размера, как и ImageView, но теперь он размывается, когда я вставляю.Уменьшенное изображение становится размытым после копирования в Pasteboard - Swift 3.0
Вот код:
import UIKit
import AVFoundation
class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
@IBOutlet weak var cameraView: UIView!
@IBOutlet weak var imageView: UIImageView!
var session: AVCaptureSession?
var stillImageOutput: AVCaptureStillImageOutput?
var videoPreviewLayer: AVCaptureVideoPreviewLayer?
var captureDevice:AVCaptureDevice?
var imagePicker: UIImagePickerController!
override func viewDidLoad() {
super.viewDidLoad()
alignment()
tapToCopy()
}
override func viewWillAppear(_ animated: Bool) {
session = AVCaptureSession()
session!.sessionPreset = AVCaptureSessionPresetPhoto
let videoDevices = AVCaptureDevice.devices(withMediaType: AVMediaTypeVideo)
for device in videoDevices!{
let device = device as! AVCaptureDevice
if device.position == AVCaptureDevicePosition.front {
captureDevice = device
}
}
//We will make a new AVCaptureDeviceInput and attempt to associate it with our backCamera input device.
//There is a chance that the input device might not be available, so we will set up a try catch to handle any potential errors we might encounter.
var error: NSError?
var input: AVCaptureDeviceInput!
do {
input = try AVCaptureDeviceInput(device: captureDevice)
} catch let error1 as NSError {
error = error1
input = nil
print(error!.localizedDescription)
}
if error == nil && session!.canAddInput(input) {
session!.addInput(input)
// ...
// The remainder of the session setup will go here...
stillImageOutput = AVCaptureStillImageOutput()
stillImageOutput?.outputSettings = [AVVideoCodecKey: AVVideoCodecJPEG]
if session!.canAddOutput(stillImageOutput) {
session!.addOutput(stillImageOutput)
// ...
// Configure the Live Preview here...
videoPreviewLayer = AVCaptureVideoPreviewLayer(session: session)
videoPreviewLayer!.videoGravity = AVLayerVideoGravityResizeAspect
videoPreviewLayer!.connection?.videoOrientation = AVCaptureVideoOrientation.portrait
cameraView.layer.addSublayer(videoPreviewLayer!)
session!.startRunning()
}
}
}
func alignment() {
let height = view.bounds.size.height
let width = view.bounds.size.width
cameraView.bounds.size.height = height/10
cameraView.bounds.size.width = height/10
cameraView.layer.cornerRadius = height/20
imageView.bounds.size.height = height/10
imageView.bounds.size.width = height/10
imageView.layer.cornerRadius = height/20
imageView.clipsToBounds = true
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
videoPreviewLayer!.frame = cameraView.bounds
}
@IBAction func takePic(_ sender: Any) {
if (stillImageOutput!.connection(withMediaType: AVMediaTypeVideo)) != nil {
let videoConnection = stillImageOutput!.connection(withMediaType: AVMediaTypeVideo)
// ...
// Code for photo capture goes here...
stillImageOutput?.captureStillImageAsynchronously(from: videoConnection, completionHandler: { (sampleBuffer, error) -> Void in
// ...
// Process the image data (sampleBuffer) here to get an image file we can put in our captureImageView
if sampleBuffer != nil {
let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
let dataProvider = CGDataProvider(data: imageData as! CFData)
let cgImageRef = CGImage(jpegDataProviderSource: dataProvider!, decode: nil, shouldInterpolate: true, intent: CGColorRenderingIntent.defaultIntent)
let image = UIImage(cgImage: cgImageRef!, scale: 1.0, orientation: UIImageOrientation.right)
// ...
// Add the image to captureImageView here...
self.imageView.image = self.resizeImage(image: image, newHeight: self.view.bounds.size.height/10)
}
})
}
}
func tapToCopy() {
let imageTap = UITapGestureRecognizer(target: self, action: #selector(self.copyToClipboard(recognizer:)))
imageTap.numberOfTapsRequired = 1
imageView.isUserInteractionEnabled = true
imageView.addGestureRecognizer(imageTap)
}
func copyToClipboard(recognizer: UITapGestureRecognizer) {
UIPasteboard.general.image = self.resizeImage(image: imageView.image!, newHeight: self.view.bounds.size.height/10)
}
func resizeImage(image: UIImage, newHeight: CGFloat) -> UIImage {
let scale = newHeight/image.size.height
let newWidth = image.size.width * scale
UIGraphicsBeginImageContext(CGSize(width: newWidth, height: newHeight))
image.draw(in: CGRect(x: 0, y: 0, width: newWidth, height: newHeight))
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage!
}
}