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iOS 10自定义相机功能

转载 作者:qq735679552 更新时间:2022-09-28 22:32:09 24 4
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直接上代码 。

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//
// TGCameraVC.swift
// TGPhotoPicker
//
// Created by targetcloud on 2017/7/25.
// Copyright © 2017年 targetcloud. All rights reserved.
//
 
import UIKit
import AVFoundation
import Photos
 
@available(iOS 10.0, *)
class TGCameraVC: UIViewController {
 
  var callbackPicutureData: ((Data?) -> ())?
 
  private var device: AVCaptureDevice?
  private var input: AVCaptureDeviceInput?
  private var imageOutput: AVCapturePhotoOutput?
  private var session: AVCaptureSession?
  private var previewLayer: AVCaptureVideoPreviewLayer?
  fileprivate var showImageContainerView: UIView?
  fileprivate var showImageView: UIImageView?
  fileprivate var picData: Data?
  private var flashMode: AVCaptureFlashMode = .auto
  private weak var flashButton: UIButton?
 
  override func viewDidLoad() {
   super.viewDidLoad()
 
   setupCamera()
   setupUI()
  
   if #available(iOS 9.0, *) {
    let isVCBased = Bundle.main.infoDictionary?[ "UIViewControllerBasedStatusBarAppearance" ] as? Bool ?? false
    if !isVCBased{
     UIApplication.shared.setStatusBarHidden( false , with: .none)
    }
   } else {
    UIApplication.shared.statusBarStyle = .lightContent
    UIApplication.shared.setStatusBarHidden( false , with: .none)
   }
  }
 
  override var prefersStatusBarHidden: Bool{
   return false
  }
 
  override var preferredStatusBarStyle: UIStatusBarStyle {
   return .lightContent
  }
 
  private func setupCamera() {
   AVCaptureDevice.requestAccess(forMediaType: AVMediaTypeVideo) { success in
    if !success {
     let alertVC = UIAlertController(title: TGPhotoPickerConfig.shared.cameraUsage, message: TGPhotoPickerConfig.shared.cameraUsageTip, preferredStyle: .actionSheet)
     alertVC.addAction(UIAlertAction(title: TGPhotoPickerConfig.shared.confirmTitle, style: . default , handler: nil))
     self.present(alertVC, animated: true , completion: nil)
    }
   }
   device = cameraWithPosistion(.back)
   input = try ? AVCaptureDeviceInput(device: device)
   guard input != nil else {
    return
   }
  
   imageOutput = AVCapturePhotoOutput()
   session = AVCaptureSession()
   session?.beginConfiguration()
   session?.sessionPreset = TGPhotoPickerConfig.shared.sessionPreset
   if session!.canAddInput(input) {
    session!.addInput(input)
   }
   if session!.canAddOutput(imageOutput) {
    session!.addOutput(imageOutput)
   }
   previewLayer = AVCaptureVideoPreviewLayer(session: session)
   previewLayer?.frame = view.bounds
   previewLayer?.videoGravity = TGPhotoPickerConfig.shared.videoGravity
   view.layer.addSublayer(previewLayer!)
   session?.commitConfiguration()
   session?.startRunning()
  }
 
  private func cameraWithPosistion(_ position: AVCaptureDevicePosition) -> AVCaptureDevice {
   let type = AVCaptureDeviceType(rawValue: TGPhotoPickerConfig.shared.captureDeviceType.rawValue)
   return AVCaptureDevice.defaultDevice(withDeviceType: type, mediaType: AVMediaTypeVideo, position: position)
  }
 
  private func setupUI() {
   let takeButton = UIButton(frame: CGRect(x: 0, y: 0, width: TGPhotoPickerConfig.shared.takeWH, height: TGPhotoPickerConfig.shared.takeWH))
   takeButton.center = CGPoint(x: UIScreen.main.bounds.width / 2, y: UIScreen.main.bounds.height - TGPhotoPickerConfig.shared.buttonEdge.bottom)
   takeButton.setImage(UIImage.size(width: TGPhotoPickerConfig.shared.takeWH, height: TGPhotoPickerConfig.shared.takeWH).border(width: 3).border(color: .white).color(.clear).corner(radius: TGPhotoPickerConfig.shared.takeWH / 2).image +
    UIImage.size(width: TGPhotoPickerConfig.shared.takeWH - 10, height: TGPhotoPickerConfig.shared.takeWH - 10).color(UIColor(white: 0.95, alpha: 1) ).corner(radius: (TGPhotoPickerConfig.shared.takeWH - 10) / 2).image, for : .normal)
   takeButton.setImage(UIImage.size(width: TGPhotoPickerConfig.shared.takeWH, height: TGPhotoPickerConfig.shared.takeWH).border(width: 3).border(color: .white).color(.clear).corner(radius: TGPhotoPickerConfig.shared.takeWH / 2).image +
    UIImage.size(width: TGPhotoPickerConfig.shared.takeWH - 10, height: TGPhotoPickerConfig.shared.takeWH - 10).color(UIColor(white: 0.8, alpha: 1) ).corner(radius: (TGPhotoPickerConfig.shared.takeWH - 10) / 2).image, for : .highlighted)
   takeButton.addTarget(self, action: #selector(takePhotoAction), for : .touchUpInside)
   view.addSubview(takeButton)
  
   let cameraChangeButton = UIButton(frame: CGRect(x: 0, y: 0, width: TGPhotoPickerConfig.shared.takeWH * 0.6, height: TGPhotoPickerConfig.shared.takeWH * 0.6))
   cameraChangeButton.setImage(TGPhotoPickerConfig.getImageNo2x3xSuffix( "camera" ), for : .normal)
   cameraChangeButton.center = CGPoint(x: UIScreen.main.bounds.width - TGPhotoPickerConfig.shared.buttonEdge.right, y: takeButton.center.y)
   cameraChangeButton.addTarget(self, action: #selector(changeCameraPositionAction), for : .touchUpInside)
   cameraChangeButton.contentMode = .scaleAspectFit
   view.addSubview(cameraChangeButton)
  
   let flashChangeButton = UIButton(frame: CGRect(x: 0, y: 0, width: TGPhotoPickerConfig.shared.takeWH * 0.5, height: TGPhotoPickerConfig.shared.takeWH * 0.5))
   flashChangeButton.center = CGPoint(x: cameraChangeButton.center.x, y: TGPhotoPickerConfig.shared.buttonEdge.top)
   flashChangeButton.setImage(TGPhotoPickerConfig.getImageNo2x3xSuffix( "flashauto" ), for : .normal)
   flashChangeButton.addTarget(self, action: #selector(flashChangeAction), for : .touchUpInside)
   flashChangeButton.contentMode = .scaleAspectFit
   flashButton = flashChangeButton
   view.addSubview(flashChangeButton)
  
   let backButton = UIButton(frame: CGRect(x: 0, y: 0, width: TGPhotoPickerConfig.shared.takeWH * 0.4, height: TGPhotoPickerConfig.shared.takeWH * 0.4))
   backButton.center = CGPoint(x: TGPhotoPickerConfig.shared.buttonEdge.left , y: flashChangeButton.center.y)
   backButton.setImage(UIImage.size(width: TGPhotoPickerConfig.shared.takeWH * 0.4, height: TGPhotoPickerConfig.shared.takeWH * 0.4)
    .corner(radius: TGPhotoPickerConfig.shared.takeWH * 0.2)
    .color(.clear)
    .border(color: UIColor.white.withAlphaComponent(0.7))
    .border(width: TGPhotoPickerConfig.shared.isShowBorder ? TGPhotoPickerConfig.shared.checkboxLineW : 0)
    .image
    .with({ context in
     context.setLineCap(.round)
     UIColor.white.setStroke()
     context.setLineWidth(TGPhotoPickerConfig.shared.checkboxLineW)
     let WH = TGPhotoPickerConfig.shared.takeWH * 0.4
     context.move(to: CGPoint(x: WH * 0.6, y: WH * 0.2))
     context.addLine(to: CGPoint(x: WH * 0.35, y: WH * 0.5))
     context.move(to: CGPoint(x: WH * 0.35, y: WH * 0.5))
     context.addLine(to: CGPoint(x: WH * 0.6, y: WH * 0.8))
     context.strokePath()
    }), for : .normal)
   backButton.contentMode = .scaleAspectFit
   backButton.addTarget(self, action: #selector(backAction), for : .touchUpInside)
   view.addSubview(backButton)
  
   showImageContainerView = UIView(frame: view.bounds)
   showImageContainerView?.backgroundColor = TGPhotoPickerConfig.shared.previewBGColor
   view.addSubview(showImageContainerView!)
  
   let height = showImageContainerView!.bounds.height - TGPhotoPickerConfig.shared.takeWH - TGPhotoPickerConfig.shared.buttonEdge.bottom - TGPhotoPickerConfig.shared.previewPadding * 2
   showImageView = UIImageView(frame: CGRect(x: TGPhotoPickerConfig.shared.previewPadding, y: TGPhotoPickerConfig.shared.previewPadding * 2, width: showImageContainerView!.bounds.width - 2 * TGPhotoPickerConfig.shared.previewPadding, height: height))
   showImageView?.contentMode = .scaleAspectFit
   showImageContainerView?.addSubview(showImageView!)
   showImageContainerView?.isHidden = true
  
   let giveupButton = createImageOperatorButton(nil, CGPoint(x: TGPhotoPickerConfig.shared.takeWH * 1.5, y: showImageContainerView!.bounds.height - TGPhotoPickerConfig.shared.takeWH * 1.5), TGPhotoPickerConfig.shared.getCheckboxImage( true , true , .circle, TGPhotoPickerConfig.shared.takeWH * 0.7).unselect)
   giveupButton.addTarget(self, action: #selector(giveupImageAction), for : .touchUpInside)
   showImageContainerView?.addSubview(giveupButton)
  
   let ensureButton = createImageOperatorButton(nil, CGPoint(x: showImageContainerView!.bounds.width - TGPhotoPickerConfig.shared.takeWH * 1.5, y: showImageContainerView!.bounds.height - TGPhotoPickerConfig.shared.takeWH * 1.5), TGPhotoPickerConfig.shared.getCheckboxImage( true , false , .circle, TGPhotoPickerConfig.shared.takeWH * 0.7).select)
   ensureButton.addTarget(self, action: #selector(useImageAction), for : .touchUpInside)
   showImageContainerView?.addSubview(ensureButton)
  }
 
  private func createImageOperatorButton(_ title: String?, _ center: CGPoint, _ img: UIImage?) -> UIButton {
   let btn = UIButton(frame: CGRect(x: 0, y: 0, width: TGPhotoPickerConfig.shared.takeWH * 0.7, height: TGPhotoPickerConfig.shared.takeWH * 0.7))
   btn.center = center
   btn.setTitle(title, for : .normal)
   btn.setImage(img, for : .normal)
   btn.contentMode = .scaleAspectFit
   return btn
  }
 
  @objc private func flashChangeAction() {
   switch flashMode {
   case .auto:
    flashMode = .on
    flashButton?.setImage(TGPhotoPickerConfig.getImageNo2x3xSuffix( "flash" ), for : .normal)
   case .on:
    flashMode = .off
    flashButton?.setImage(TGPhotoPickerConfig.getImageNo2x3xSuffix( "flashno" ), for : .normal)
   case .off:
    flashMode = .auto
    flashButton?.setImage(TGPhotoPickerConfig.getImageNo2x3xSuffix( "flashauto" ), for : .normal)
   }
  }
 
  @objc private func backAction() {
   dismiss(animated: true , completion: nil)
  }
 
  @objc private func takePhotoAction() {
   let connection = imageOutput?.connection(withMediaType: AVMediaTypeVideo)
   guard connection != nil else {
    return
   }
   let photoSettings = AVCapturePhotoSettings()
   photoSettings.flashMode = flashMode
   imageOutput?.capturePhoto(with: photoSettings, delegate: self)
  }
 
  @objc private func changeCameraPositionAction() {
   let animation = CATransition()
   animation.duration = 0.5
   animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
   animation.type = TGPhotoPickerConfig.shared.transitionType
  
   let newDevice: AVCaptureDevice!
   let newInput: AVCaptureDeviceInput?
   let position = input?.device.position
   if position == .front {
    newDevice = cameraWithPosistion(.back)
    animation.subtype = kCATransitionFromLeft
   } else {
    newDevice = cameraWithPosistion(.front)
    animation.subtype = kCATransitionFromRight
   }
   newInput = try ? AVCaptureDeviceInput(device: newDevice)
   guard newInput != nil else {
    return
   }
  
   previewLayer?.add(animation, forKey: nil)
  
   session?.beginConfiguration()
   session?.removeInput(input)
   if session!.canAddInput(newInput) {
    session?.addInput(newInput!)
    input = newInput
   } else {
    session?.addInput(input)
   }
   session?.commitConfiguration()
  }
 
  @objc private func giveupImageAction() {
   showImageView?.image = UIImage()
   showImageContainerView?.isHidden = true
  }
 
  @objc private func useImageAction() {
   callbackPicutureData?(picData)
   dismiss(animated: true , completion: nil)
  }
}
 
@available(iOS 10.0, *)
extension TGCameraVC: AVCapturePhotoCaptureDelegate {
  func capture(_ captureOutput: AVCapturePhotoOutput, didFinishProcessingPhotoSampleBuffer photoSampleBuffer: CMSampleBuffer?, previewPhotoSampleBuffer: CMSampleBuffer?, resolvedSettings: AVCaptureResolvedPhotoSettings, bracketSettings: AVCaptureBracketedStillImageSettings?, error: Error?) {
   if error != nil {
    print( "error = \(String(describing: error?.localizedDescription))" )
   } else {
    if let imageData = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: photoSampleBuffer!, previewPhotoSampleBuffer: previewPhotoSampleBuffer){
     picData = imageData
     showImageContainerView?.isHidden = false
     showImageView?.image = UIImage(data: imageData)
     if TGPhotoPickerConfig.shared.saveImageToPhotoAlbum{
      self.saveImageToPhotoAlbum(UIImage(data: imageData)!)
     }
    }
   }
  }
 
  fileprivate func saveImageToPhotoAlbum(_ savedImage:UIImage){
   UIImageWriteToSavedPhotosAlbum(savedImage, self, #selector(imageDidFinishSavingWithErrorContextInfo), nil)
  }
 
  @objc fileprivate func imageDidFinishSavingWithErrorContextInfo(image:UIImage,error:NSError?,contextInfo:UnsafeMutableRawPointer?){
   if canUseAlbum(){
    let msg = (error != nil) ? TGPhotoPickerConfig.shared.saveImageFailTip : TGPhotoPickerConfig.shared.saveImageSuccessTip
    let alert = UIAlertView(title: TGPhotoPickerConfig.shared.saveImageTip, message: msg, delegate: self, cancelButtonTitle: TGPhotoPickerConfig.shared.confirmTitle)
    alert.show()
   }
  }
 
  fileprivate func canUseAlbum()-> Bool{
   if PHPhotoLibrary.authorizationStatus() != PHAuthorizationStatus.authorized {
    let alertView = UIAlertView(title: TGPhotoPickerConfig.shared.PhotoLibraryUsage, message: TGPhotoPickerConfig.shared.PhotoLibraryUsageTip, delegate: nil, cancelButtonTitle: TGPhotoPickerConfig.shared.confirmTitle, otherButtonTitles: TGPhotoPickerConfig.shared.cancelTitle)
    alertView.tag = TGPhotoPickerConfig.shared.alertViewTag
    alertView.show()
    return false
   } else {
    return true
   }
  }
}

效果如下 。

iOS 10自定义相机功能

完整使用DEMO见:点击打开链接 。

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我.

原文链接:https://blog.csdn.net/callzjy/article/details/77149872 。

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