一、准备工作：
创建项目 ，创建一个空白项目，好了看下面的就行了
二、相关权限的添加：拍照和获取相册都需要先设置权限
权限添加注意点：info.plist中添加两个keyNSPhotoLibraryUsageDescription,和NSCameraUsageDescription,填写使用的提示内容.
三、在新项目里ViewController，写一个简单的布局
实例化一个按钮 Button，一张图片 ImageView
四、代码的具体实现
1、 首先、要继承代理 UIImagePickerControllerDelegate, UINavigationControllerDelegate
2、拍照或从相册选择图片都是通过 UIImagePickerController.init()
设置 sourceType = .camera 是拍照
设置 sourceType = .photoLibrary 是从相册选择图片
3、相册选择或拍照都是通过 imagePickerController 方法返回，如果对图片还要做处理也可以在这里做
import UIKit
class ImageController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate{
//图片展示
@IBOutlet weak var image: UIImageView!
var takingPicture:UIImagePickerController!
//点击按钮弹出拍照、相册的选择框
@IBAction func getImage(_ sender: Any) {
let actionSheetController = UIAlertController()
let cancelAction = UIAlertAction(title: "取消", style: UIAlertAction.Style.cancel) { (alertAction) -> Void in
print("Tap 取消 Button")
}
let takingPicturesAction = UIAlertAction(title: "拍照", style: UIAlertAction.Style.destructive) { (alertAction) -> Void in
self.getImageGo(type: 1)
}
let photoAlbumAction = UIAlertAction(title: "相册", style: UIAlertAction.Style.default) { (alertAction) -> Void in
self.getImageGo(type: 2)
}
actionSheetController.addAction(cancelAction)
actionSheetController.addAction(takingPicturesAction)
actionSheetController.addAction(photoAlbumAction)
//iPad设备浮动层设置锚点
actionSheetController.popoverPresentationController?.sourceView = sender as? UIView
//显示
self.present(actionSheetController, animated: true, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
//去拍照或者去相册选择图片
func getImageGo(type:Int){
takingPicture = UIImagePickerController.init()
if(type==1){
takingPicture.sourceType = .camera
//拍照时是否显示工具栏
//takingPicture.showsCameraControls = true
}else if(type==2){
takingPicture.sourceType = .photoLibrary
}
//是否截取，设置为true在获取图片后可以将其截取成正方形
takingPicture.allowsEditing = false
takingPicture.delegate = self
present(takingPicture, animated: true, completion: nil)
}
//拍照或是相册选择返回的图片
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
takingPicture.dismiss(animated: true, completion: nil)
if(takingPicture.allowsEditing == false){
//原图
image.image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage
}else{
//截图
image.image = info[UIImagePickerController.InfoKey.editedImage] as? UIImage
}
}
}
五、设置相册语言环境
上面功能已经实现，简单拍照，图片获取实现了；
但是，你会发现，选择拍照时，上面的操作步骤文字都是英文的，我们可以把它改成中文
如下图所示，选中项目 -> PEOJECT -> Info -> Localization
点击 + 将 China，Simplified 添加到 Localization 重新运行项目就可以看到拍照界面都是中文了
info.plist设置
网友评论