ComPDFKit(flutter) - widget contrller 新增save实现方法

example/ios/Runner.xcodeproj/project.pbxproj

@@ -495,6 +495,7 @@
 				FLUTTER_BUILD_NAME = 2.0.1;
 				FLUTTER_BUILD_NUMBER = 2.0.1;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -684,6 +685,7 @@
 				FLUTTER_BUILD_NAME = 2.0.1;
 				FLUTTER_BUILD_NUMBER = 2.0.1;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -712,6 +714,7 @@
 				FLUTTER_BUILD_NAME = 2.0.1;
 				FLUTTER_BUILD_NUMBER = 2.0.1;
 				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",

ios/Classes/reader/CPDFViewCtrlFactory.swift

@@ -41,9 +41,9 @@ class CPDFViewCtrlFactory: NSObject, FlutterPlatformViewFactory {
 
 class CPDFViewCtrlFlutter: NSObject, FlutterPlatformView, CPDFViewBaseControllerDelete {
     
-    private var _pdfViewController : CPDFViewController
+    private var pdfViewController : CPDFViewController
     
-    private var _navigationController : CNavigationController
+    private var navigationController : CNavigationController
     
     private var _methodChannel : FlutterMethodChannel
     
@@ -54,8 +54,7 @@ class CPDFViewCtrlFlutter: NSObject, FlutterPlatformView, CPDFViewBaseController
         arguments args: Any?,
         binaryMessenger messenger: FlutterBinaryMessenger?
     ) {
-
-        // 解析 文档路径、密码、配置信息
+        // Parses the document path, password, and configuration information
         let initInfo = args as? [String: Any]
         let jsonString = initInfo?["configuration"] ?? ""
         let password = initInfo?["password"] ?? ""
@@ -64,28 +63,28 @@ class CPDFViewCtrlFlutter: NSObject, FlutterPlatformView, CPDFViewBaseController
         let jsonDataParse = CPDFJSONDataParse(String: jsonString as! String)
         let configuration = jsonDataParse.configuration
         
-        // 创建pdfview controller视图
-        _pdfViewController = CPDFViewController(filePath: path, password: password as! String, configuration: configuration!)
+        // Create the pdfview controller view
+        pdfViewController = CPDFViewController(filePath: path, password: password as? String, configuration: configuration!)
         
-        _navigationController = CNavigationController(rootViewController: _pdfViewController)
-        _navigationController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
-        _navigationController.view.frame = frame
+        navigationController = CNavigationController(rootViewController: pdfViewController)
+        navigationController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        navigationController.view.frame = frame
         
         _methodChannel = FlutterMethodChannel.init(name: "com.compdfkit.flutter.ui.pdfviewer.\(viewId)", binaryMessenger: messenger!)
         
         super.init()
         
-        // 设置代理，但是未生效
-        _pdfViewController.delegate = self
+        // Proxy set, but not used
+        pdfViewController.delegate = self
         
-        _navigationController.setViewControllers([_pdfViewController], animated: false)
+        navigationController.setViewControllers([pdfViewController], animated: false)
         
         registeryMethodChannel(viewId: viewId, binaryMessenger: messenger!)
         
     }
 
     func view() -> UIView {
-        return _navigationController.view
+        return navigationController.view
     }
         
     public func PDFViewBaseControllerDissmiss(_ baseControllerDelete: CPDFViewBaseController) {
@@ -101,8 +100,25 @@ class CPDFViewCtrlFlutter: NSObject, FlutterPlatformView, CPDFViewBaseController
             switch call.method {
             case "save":
                 // save pdf
-                print("ComPDFKit-Flutter: save PDF")
-                result(true) // or return false
+                guard let pdfListView = self.pdfViewController.pdfListView else {
+                    result(true)
+                    return
+                }
+                var isSuccess = false
+                if (pdfListView.isEditing() == true && pdfListView.isEdited() == true) {
+                    pdfListView.commitEditing()
+                    if pdfListView.document.isModified() == true {
+                        isSuccess = pdfListView.document.write(to: pdfListView.document.documentURL)
+                    }
+                    
+                } else {
+                    if(pdfListView.document != nil) {
+                        if pdfListView.document.isModified() == true {
+                            isSuccess = pdfListView.document.write(to: pdfListView.document.documentURL)
+                        }
+                    }
+                }
+                result(isSuccess) // or return false
             default:
                 result(FlutterMethodNotImplemented)
             }