Swift 3 实现拍照功能
发布时间:2020-12-14 06:14:05 所属栏目:百科 来源:网络整理
导读:编辑.plist文件,添加两个key-value,打开相机和相册的访问权限 1) 申请相机权限: keyNSCameraUsageDescription/keystringThis app will use camera./string 2) 申请相册权限 keyNSPhotoLibraryUsageDescription/keystringYou can select photos to attach t
编辑.plist文件,添加两个key-value,打开相机和相册的访问权限 1) 申请相机权限: <key>NSCameraUsageDescription</key> <string>This app will use camera.</string> 2) 申请相册权限 <key>NSPhotoLibraryUsageDescription</key> <string>You can select photos to attach to reports.</string> 在xcode中拖一个UIImageview 控件 继承下面两个类 UINavigationControllerDelegate UIImagePickerControllerDelegate 实现方法: class yourController:...,UINavigationControllerDelegate,UIImagePickerControllerDelegate { ... } 1. 拍照按钮实现: @IBAction func your_take_photo_action(_ sender: UIButton) { imagePicker = UIImagePickerController() imagePicker.delegate = self imagePicker.sourceType = .camera present(imagePicker,animated: true,completion: nil) } 2. 保存相册 @IBAction func save(_ sender: AnyObject) { UIImageWriteToSavedPhotosAlbum(imageTake.image!,self,#selector(image(_:didFinishSavingWithError:contextInfo:)),nil) } 3. 实现以下两个开启相机和选中图片的回调函数 func image(_ image: UIImage,didFinishSavingWithError error: Error?,contextInfo: UnsafeRawPointer) { if let error = error { // we got back an error! let ac = UIAlertController(title: "Save error",message: error.localizedDescription,preferredStyle: .alert) ac.addAction(UIAlertAction(title: "OK",style: .default)) present(ac,animated: true) } else { let ac = UIAlertController(title: "Saved!",message: "Your altered image has been saved to your photos.",animated: true) } } //MARK: - Done image capture here func imagePickerController(_ picker: UIImagePickerController,didFinishPickingMediaWithInfo info: [String : Any]) { imagePicker.dismiss(animated: true,completion: nil) imageTake.image = info[UIImagePickerControllerOriginalImage] as? UIImage } 最后如果希望转换成base64,可以使用以下函数 func UIImgToBase64(img:UIImage) ->String{ let imageData:NSData = UIImagePNGRepresentation(img)! as NSData let strBase64 = imageData.base64EncodedString(options: .lineLength64Characters) return strBase64 } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |