保存图片到相册

Bark/AppDelegate.swift

@@ -8,6 +8,7 @@
 
 import IQKeyboardManagerSwift
 import IQKeyboardToolbarManager
+import SVProgressHUD
 import SwiftyStoreKit
 import UIKit
 import UserNotifications
@@ -33,6 +34,8 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterD
         // 必须在应用一开始就配置，否则应用可能提前在配置之前试用了 Realm() ，则会创建两个独立数据库。
         setupRealm()
         
+        SVProgressHUD.setMinimumDismissTimeInterval(1.5)
+        
         IQKeyboardManager.shared.isEnabled = true
         IQKeyboardToolbarManager.shared.isEnabled = true
         if #available(iOS 14, *), UIDevice.current.userInterfaceIdiom == .pad {

Bark/Info.plist

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>NSPhotoLibraryAddUsageDescription</key>
+	<string>Save the image to the photo library</string>
 	<key>CFBundleURLTypes</key>
 	<array>
 		<dict>

Bark/Localizable.xcstrings

@@ -2668,6 +2668,35 @@
         }
       }
     },
+    "noPermission" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "No permission"
+          }
+        },
+        "ja" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "権限がありません"
+          }
+        },
+        "tr" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "İzin yok"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "没有权限"
+          }
+        }
+      }
+    },
     "Notice1" : {
       "extractionState" : "manual",
       "localizations" : {
@@ -3393,6 +3422,64 @@
         }
       }
     },
+    "save" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Save"
+          }
+        },
+        "ja" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "保存"
+          }
+        },
+        "tr" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Kaydet"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "保存"
+          }
+        }
+      }
+    },
+    "saveSuccess" : {
+      "extractionState" : "manual",
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Saved to your photos!"
+          }
+        },
+        "ja" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "アルバムに保存したよ！"
+          }
+        },
+        "tr" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Albüme kaydedildi!"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "已保存到相册！"
+          }
+        }
+      }
+    },
     "SecureConnection" : {
       "extractionState" : "manual",
       "localizations" : {

View/MessageList/MessageItemView.swift

@@ -8,6 +8,8 @@
 
 import ImageViewer_swift
 import Kingfisher
+import Photos
+import SVProgressHUD
 import UIKit
 
 class MessageItemView: UIView {
@@ -168,13 +170,25 @@ extension MessageItemView {
             imageView.isHidden = false
             // loadDiskFileSynchronously
             imageView.kf.setImage(with: URL(string: image), options: [.targetCache(imageCache), .keepCurrentImageWhileLoading, .loadDiskFileSynchronously]) { [weak self] result in
-                // 获取系统是否是夜间模式
-                let isDarkMode = UIScreen.main.traitCollection.userInterfaceStyle == .dark
-                self?.imageView.setupImageViewer(options: [.closeIcon(UIImage(named: "back")!), .theme(isDarkMode ? .dark : .light)])
                 guard let self else { return }
                 guard let image = try? result.get().image else {
                     return
                 }
+                
+                // 获取系统是否是夜间模式
+                let isDarkMode = UIScreen.main.traitCollection.userInterfaceStyle == .dark
+                var options: [ImageViewerOption] = [
+                    .closeIcon(UIImage(named: "back")!),
+                    .theme(isDarkMode ? .dark : .light)
+                ]
+                if #available(iOS 14.0, *) {
+                    options.append(.rightNavItemTitle(NSLocalizedString("save"), onTap: { _ in
+                        // 保存 image 到相册
+                        self.saveImageToAlbum(image)
+                    }))
+                }
+                self.imageView.setupImageViewer(options: options)
+                
                 layoutImageView(image: image)
             }
         } else {
@@ -199,3 +213,28 @@ extension MessageItemView {
         }
     }
 }
+
+@available(iOS 14.0, *)
+extension MessageItemView {
+    func saveImageToAlbum(_ image: UIImage) {
+        PHPhotoLibrary.requestAuthorization(for: .addOnly) { status in
+            guard status == .authorized || status == .limited else {
+                DispatchQueue.main.async {
+                    SVProgressHUD.showInfo(withStatus: NSLocalizedString("noPermission"))
+                }
+                return
+            }
+            PHPhotoLibrary.shared().performChanges({
+                PHAssetChangeRequest.creationRequestForAsset(from: image)
+            }) { success, error in
+                DispatchQueue.main.async {
+                    if success {
+                        SVProgressHUD.showSuccess(withStatus: NSLocalizedString("saveSuccess"))
+                    } else {
+                        SVProgressHUD.showError(withStatus: error?.localizedDescription)
+                    }
+                }
+            }
+        }
+    }
+}