相机添加前后置摄像头类型

MRFramework/MRFramework/UIControls/PhotoPicker/SAPhotoPicker.swift

@@ -9,12 +9,26 @@
 import Foundation
 import UIKit
 
+public enum SACameraDeviceType {
+    case rear
+    case front
+    
+    var device: UIImagePickerController.CameraDevice {
+        switch self {
+        case .rear:
+            return .rear
+        case .front:
+            return .front
+        }
+    }
+}
+
 /// Picker类型
 public enum SAPhotoPickerType {
     /// 先显示一个actionSheet，选择类型。count是自定义相册的选择图片数量
     case all(count: Int)
     /// 相机
-    case camera
+    case camera(_ type: SACameraDeviceType)
     /// 系统相册
     case photo
     /// 系统相册
@@ -84,8 +98,8 @@ public class SAPhotoPicker: NSObject {
             UIApplication.shared.keyWindow?.rootViewController?.present(alert, animated: true, completion: nil)
         case .photo:
             self.showImagePicker(.photoLibrary)
-        case .camera:
-            self.showImagePicker(.camera)
+        case .camera(let type):
+            self.showImagePicker(.camera, device: type.device)
         case .savedPhotosAlbum:
             self.showImagePicker(.savedPhotosAlbum)
         case .custom(let count):
@@ -95,12 +109,16 @@ public class SAPhotoPicker: NSObject {
 }
 
 extension SAPhotoPicker {
-    private func showImagePicker(_ type: UIImagePickerController.SourceType) {
+    private func showImagePicker(_ type: UIImagePickerController.SourceType,
+                                 device: UIImagePickerController.CameraDevice? = nil) {
         let vc = UIImagePickerController()
         vc.sourceType = type
         vc.delegate = self
         vc.title = navTitle(with: type)
         vc.allowsEditing = editable
+        if let device = device {
+            vc.cameraDevice = device
+        }
         UIApplication.shared.keyWindow?.rootViewController?.present(vc, animated: true, completion: nil)
     }