iOS 自定义简单相机
import UIKit
@objc public class YXCamera: UIView ,AVCapturePhotoCaptureDelegate {
private lazy var session: AVCaptureSession = {
letsession =AVCaptureSession.init()
session.sessionPreset= .high
return session
}()
private lazy var capLayer:AVCaptureVideoPreviewLayer = {
letlayer =AVCaptureVideoPreviewLayer.init(session:self.session)
layer.frame=self.bounds
layer.videoGravity = .resizeAspectFill
return layer
}()
private lazy var capInput:AVCaptureDeviceInput? = {
if let device =AVCaptureDevice.default( .builtInWideAngleCamera, for: .video, position: .front) {
var input:AVCaptureDeviceInput?
do{
try input =AVCaptureDeviceInput.init(device: device)
}catch{
print(error)
}
return input
}
returnnil
}()
private lazy var capOutput:AVCapturePhotoOutput = {
let output = AVCapturePhotoOutput.init()
return output
}()
override init(frame:CGRect) {
super.init(frame: frame)
if self.deviceStatus() != .authorized {
print("未授权")
return
}
if self.capInput == nil {
print("捕捉设备输入异常")
return
}
self.layer.addSublayer(self.capLayer)
if self.session.canAddInput(self.capInput!) {
self.session.addInput(self.capInput!)
}
if self.session.canAddOutput(self.capOutput) {
self.session.addOutput(self.capOutput)
}
self.session.startRunning()
}
public func deviceStatus() -> AVAuthorizationStatus {
let status =AVCaptureDevice.authorizationStatus(for: .video)
return status
}
public func start() {
let setting = AVCapturePhotoSettings.init(format: [AVVideoCodecKey:AVVideoCodecType.jpeg])
self.capOutput.capturePhoto(with: setting, delegate:self)
}
publicfuncphotoOutput(_output:AVCapturePhotoOutput, didFinishProcessingPhoto photo:AVCapturePhoto, error:Error?) {
if let data = photo.fileDataRepresentation() {
if let image =UIImage.init(data: data) {
UIImageWriteToSavedPhotosAlbum(image,self,#selector(saveImage(image:didFinishSavingWithError:contextInfo:)),nil)
}
}
self.session.stopRunning()
}
@objc private func saveImage(image:UIImage, didFinishSavingWithError error:NSError?, contextInfo:AnyObject) {
if error!=nil {
print("保存失败",error!)
} else{
print("保存成功")
}
}
required init?(coder:NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
