fix #56, some code cleanup

.idea/vcs.xml

@@ -2,5 +2,6 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser" vcs="Git" />
   </component>
 </project>
\ No newline at end of file

CHANGELOG.md

+## 1.0.1
+
+- Fixed Unable to load initialFile on iOS #56
+- Some code cleanup
+
 ## 1.0.0
 
 Breaking changes:
-- Fixed [Flutter AndroidX compatibility](https://flutter.dev/docs/development/packages-and-plugins/androidx-compatibility), the latest version that doesn't use `AndroidX` is `0.6.0`.
+- Fixed [Flutter AndroidX compatibility](https://flutter.dev/docs/development/packages-and-plugins/androidx-compatibility), the latest version that doesn't use `AndroidX` is `0.6.0` (thanks to [juicycleff](https://github.com/juicycleff)).
 
 ## 0.6.0
 

README.md

@@ -13,6 +13,8 @@ This plugin is inspired by the popular [cordova-plugin-inappbrowser](https://git
 ### Requirements
 - Dart sdk: ">=2.1.0-dev.7.1 <3.0.0"
 - Flutter: ">=0.10.1 <2.0.0"
+- Android: `minSdkVersion 17`
+- iOS: `--ios-language swift`
 
 ### Note for Android
 During the build, if Android fails with `Error: uses-sdk:minSdkVersion 16 cannot be smaller than version 17 declared in library`, it means that you need to update the `minSdkVersion` of your `build.gradle` file to at least `17`. 

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/FlutterWebView.java

@@ -128,8 +128,7 @@ public class FlutterWebView implements PlatformView, MethodCallHandler  {
       case "injectScriptCode":
         if (webView != null) {
           source = call.argument("source").toString();
-          jsWrapper = "(function(){return JSON.stringify(eval(%s));})();";
-          webView.injectDeferredObject(source, jsWrapper, result);
+          webView.injectScriptCode(source, result);
         }
         else {
           result.success("");
@@ -138,24 +137,21 @@ public class FlutterWebView implements PlatformView, MethodCallHandler  {
       case "injectScriptFile":
         if (webView != null) {
           urlFile = call.argument("urlFile").toString();
-          jsWrapper = "(function(d) { var c = d.createElement('script'); c.src = %s; d.body.appendChild(c); })(document);";
-          webView.injectDeferredObject(urlFile, jsWrapper, null);
+          webView.injectScriptFile(urlFile);
         }
         result.success(true);
         break;
       case "injectStyleCode":
         if (webView != null) {
           source = call.argument("source").toString();
-          jsWrapper = "(function(d) { var c = d.createElement('style'); c.innerHTML = %s; d.body.appendChild(c); })(document);";
-          webView.injectDeferredObject(source, jsWrapper, null);
+          webView.injectStyleCode(source);
         }
         result.success(true);
         break;
       case "injectStyleFile":
         if (webView != null) {
           urlFile = call.argument("urlFile").toString();
-          jsWrapper = "(function(d) { var c = d.createElement('link'); c.rel='stylesheet'; c.type='text/css'; c.href = %s; d.head.appendChild(c); })(document);";
-          webView.injectDeferredObject(urlFile, jsWrapper, null);
+          webView.injectStyleFile(urlFile);
         }
         result.success(true);
         break;

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserActivity.java

@@ -198,7 +198,7 @@ public class InAppBrowserActivity extends AppCompatActivity {
     if (webView != null) {
       webView.loadUrl(url, result);
     } else {
-      result.error(LOG_TAG, "Cannot load url " + url, null);
+      result.error(LOG_TAG, "webView is null", null);
     }
   }
 
@@ -206,7 +206,7 @@ public class InAppBrowserActivity extends AppCompatActivity {
     if (webView != null) {
       webView.loadUrl(url, headers, result);
     } else {
-      result.error(LOG_TAG, "Cannot load url " + url, null);
+      result.error(LOG_TAG, "webView is null", null);
     }
   }
 
@@ -214,7 +214,7 @@ public class InAppBrowserActivity extends AppCompatActivity {
     if (webView != null) {
       webView.postUrl(url, postData, result);
     } else {
-      result.error(LOG_TAG, "Cannot load url " + url, null);
+      result.error(LOG_TAG, "webView is null", null);
     }
   }
 
@@ -222,7 +222,7 @@ public class InAppBrowserActivity extends AppCompatActivity {
     if (webView != null) {
       webView.loadData(data, mimeType, encoding, baseUrl, result);
     } else {
-      result.error(LOG_TAG, "Cannot load data", null);
+      result.error(LOG_TAG, "webView is null", null);
     }
   }
 
@@ -230,7 +230,7 @@ public class InAppBrowserActivity extends AppCompatActivity {
     if (webView != null) {
       webView.loadFile(url, result);
     } else {
-      result.error(LOG_TAG, "Cannot load file " + url, null);
+      result.error(LOG_TAG, "webView is null", null);
     }
   }
 
@@ -238,7 +238,7 @@ public class InAppBrowserActivity extends AppCompatActivity {
     if (webView != null) {
       webView.loadFile(url, headers, result);
     } else {
-      result.error(LOG_TAG, "Cannot load file " + url, null);
+      result.error(LOG_TAG, "webView is null", null);
     }
   }
 
@@ -420,13 +420,28 @@ public class InAppBrowserActivity extends AppCompatActivity {
     return optionsMap;
   }
 
-  public void injectDeferredObject(String source, String jsWrapper, MethodChannel.Result result) {
+  public void injectScriptCode(String source, MethodChannel.Result result) {
     if (webView != null)
-      webView.injectDeferredObject(source, jsWrapper, result);
+      webView.injectScriptCode(source, result);
     else
       result.success("");
   }
 
+  public void injectScriptFile(String urlFile) {
+    if (webView != null)
+      webView.injectScriptFile(urlFile);
+  }
+
+  public void injectStyleCode(String source) {
+    if (webView != null)
+      webView.injectStyleCode(source);
+  }
+
+  public void injectStyleFile(String urlFile) {
+    if (webView != null)
+      webView.injectStyleFile(urlFile);
+  }
+
   public HashMap<String, Object> getCopyBackForwardList() {
     if (webView != null)
       return webView.getCopyBackForwardList();

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserFlutterPlugin.java

@@ -212,25 +212,21 @@ public class InAppBrowserFlutterPlugin implements MethodCallHandler {
         break;
       case "injectScriptCode":
         source = call.argument("source").toString();
-        jsWrapper = "(function(){return JSON.stringify(eval(%s));})();";
-        injectDeferredObject(uuid, source, jsWrapper, result);
+        injectScriptCode(uuid, source, result);
         break;
       case "injectScriptFile":
         urlFile = call.argument("urlFile").toString();
-        jsWrapper = "(function(d) { var c = d.createElement('script'); c.src = %s; d.body.appendChild(c); })(document);";
-        injectDeferredObject(uuid, urlFile, jsWrapper, null);
+        injectScriptFile(uuid, urlFile);
         result.success(true);
         break;
       case "injectStyleCode":
         source = call.argument("source").toString();
-        jsWrapper = "(function(d) { var c = d.createElement('style'); c.innerHTML = %s; d.body.appendChild(c); })(document);";
-        injectDeferredObject(uuid, source, jsWrapper, null);
+        injectStyleCode(uuid, source);
         result.success(true);
         break;
       case "injectStyleFile":
         urlFile = call.argument("urlFile").toString();
-        jsWrapper = "(function(d) { var c = d.createElement('link'); c.rel='stylesheet'; c.type='text/css'; c.href = %s; d.head.appendChild(c); })(document);";
-        injectDeferredObject(uuid, urlFile, jsWrapper, null);
+        injectStyleFile(uuid, urlFile);
         result.success(true);
         break;
       case "show":
@@ -307,12 +303,33 @@ public class InAppBrowserFlutterPlugin implements MethodCallHandler {
 
   }
 
-  private void injectDeferredObject(String uuid, String source, String jsWrapper, final Result result) {
+  private void injectScriptCode(String uuid, String source, final Result result) {
     final InAppBrowserActivity inAppBrowserActivity = webViewActivities.get(uuid);
     if (inAppBrowserActivity != null) {
-      inAppBrowserActivity.injectDeferredObject(source, jsWrapper, result);
+      inAppBrowserActivity.injectScriptCode(source, result);
     } else {
-      Log.d(LOG_TAG, "Can't inject code into the system browser");
+      Log.d(LOG_TAG, "webView is null");
+    }
+  }
+
+  private void injectScriptFile(String uuid, String urlFile) {
+    final InAppBrowserActivity inAppBrowserActivity = webViewActivities.get(uuid);
+    if (inAppBrowserActivity != null) {
+      inAppBrowserActivity.injectScriptFile(urlFile);
+    }
+  }
+
+  private void injectStyleCode(String uuid, String source) {
+    final InAppBrowserActivity inAppBrowserActivity = webViewActivities.get(uuid);
+    if (inAppBrowserActivity != null) {
+      inAppBrowserActivity.injectStyleCode(source);
+    }
+  }
+
+  private void injectStyleFile(String uuid, String urlFile) {
+    final InAppBrowserActivity inAppBrowserActivity = webViewActivities.get(uuid);
+    if (inAppBrowserActivity != null) {
+      inAppBrowserActivity.injectStyleFile(urlFile);
     }
   }
 

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppWebView/InAppWebView.java

@@ -406,6 +406,26 @@ public class InAppWebView extends WebView {
     });
   }
 
+  public void injectScriptCode(String source, MethodChannel.Result result) {
+    String jsWrapper = "(function(){return JSON.stringify(eval(%s));})();";
+    injectDeferredObject(source, jsWrapper, result);
+  }
+
+  public void injectScriptFile(String urlFile) {
+    String jsWrapper = "(function(d) { var c = d.createElement('script'); c.src = %s; d.body.appendChild(c); })(document);";
+    injectDeferredObject(urlFile, jsWrapper, null);
+  }
+
+  public void injectStyleCode(String source) {
+    String jsWrapper = "(function(d) { var c = d.createElement('style'); c.innerHTML = %s; d.body.appendChild(c); })(document);";
+    injectDeferredObject(source, jsWrapper, null);
+  }
+
+  public void injectStyleFile(String urlFile) {
+    String jsWrapper = "(function(d) { var c = d.createElement('link'); c.rel='stylesheet'; c.type='text/css'; c.href = %s; d.head.appendChild(c); })(document);";
+    injectDeferredObject(urlFile, jsWrapper, null);
+  }
+
   public HashMap<String, Object> getCopyBackForwardList() {
     WebBackForwardList currentList = copyBackForwardList();
     int currentSize = currentList.getSize();

example/assets/index.html

@@ -16,13 +16,13 @@
         <img src="images/dart.svg" alt="dart logo">
         <div class="row">
             <div class="col-sm">
-                One of three columns
+                <a href="page-1.html">PAGE 1</a>
             </div>
             <div class="col-sm">
-                One of three columns
+                <a href="page-2.html">PAGE 2</a>
             </div>
             <div class="col-sm">
-                One of three columns
+                <a href="page-3.html">PAGE 3</a>
             </div>
         </div>
     </div>

example/assets/page-1.html

+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport"
+          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>Document</title>
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
+    <link rel="stylesheet" href="css/style.css">
+    <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
+</head>
+<body>
+<div class="container">
+    <div class="container">
+        <img src="images/dart.svg" alt="dart logo">
+        <div class="row">
+            <div class="col-sm">
+                <a href="index.html">GO BACK HOME</a>
+            </div>
+            <div class="col-sm">
+                <h1>PAGE 1</h1>
+            </div>
+        </div>
+    </div>
+    <script>
+        console.log("page 1");
+    </script>
+</div>
+</body>
+</html>
\ No newline at end of file

example/assets/page-2.html

+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport"
+          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>Document</title>
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
+    <link rel="stylesheet" href="css/style.css">
+    <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
+</head>
+<body>
+<div class="container">
+    <div class="container">
+        <img src="images/dart.svg" alt="dart logo">
+        <div class="row">
+            <div class="col-sm">
+                <a href="index.html">GO BACK HOME</a>
+            </div>
+            <div class="col-sm">
+                <h1>PAGE 2</h1>
+            </div>
+        </div>
+    </div>
+    <script>
+        console.log("page 2");
+    </script>
+</div>
+</body>
+</html>
\ No newline at end of file

example/assets/page-3.html

+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport"
+          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>Document</title>
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
+    <link rel="stylesheet" href="css/style.css">
+    <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
+</head>
+<body>
+<div class="container">
+    <div class="container">
+        <img src="images/dart.svg" alt="dart logo">
+        <div class="row">
+            <div class="col-sm">
+                <a href="index.html">GO BACK HOME</a>
+            </div>
+            <div class="col-sm">
+                <h1>PAGE 3</h1>
+            </div>
+        </div>
+    </div>
+    <script>
+        console.log("page 3");
+    </script>
+</div>
+</body>
+</html>
\ No newline at end of file

example/ios/Runner.xcodeproj/project.pbxproj

@@ -9,7 +9,6 @@
 /* Begin PBXBuildFile section */
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
 		25A517508F43E58C47090625 /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E8D91E403808A7540F18B75D /* Pods_Runner.framework */; };
-		2D5378261FAA1A9400D5DBA9 /* flutter_assets in Resources */ = {isa = PBXBuildFile; fileRef = 2D5378251FAA1A9400D5DBA9 /* flutter_assets */; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
 		3B80C3941E831B6300D905FE /* App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; };
 		3B80C3951E831B6300D905FE /* App.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
@@ -39,7 +38,6 @@
 /* Begin PBXFileReference section */
 		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
 		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
-		2D5378251FAA1A9400D5DBA9 /* flutter_assets */ = {isa = PBXFileReference; lastKnownFileType = folder; name = flutter_assets; path = Flutter/flutter_assets; sourceTree = SOURCE_ROOT; };
 		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
 		3B80C3931E831B6300D905FE /* App.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = App.framework; path = Flutter/App.framework; sourceTree = "<group>"; };
 		74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = "<group>"; };
@@ -88,7 +86,6 @@
 		9740EEB11CF90186004384FC /* Flutter */ = {
 			isa = PBXGroup;
 			children = (
-				2D5378251FAA1A9400D5DBA9 /* flutter_assets */,
 				3B80C3931E831B6300D905FE /* App.framework */,
 				3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */,
 				9740EEBA1CF902C7004384FC /* Flutter.framework */,
@@ -209,7 +206,6 @@
 				EDC1147F21735BC200D2247A /* Main.storyboard in Resources */,
 				3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */,
 				97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */,
-				2D5378261FAA1A9400D5DBA9 /* flutter_assets in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

example/lib/chrome_safari_example.screen.dart

@@ -38,7 +38,7 @@ class _ChromeSafariExampleScreenState extends State<ChromeSafariExampleScreen> {
     return new Center(
       child: new RaisedButton(
           onPressed: () async {
-            await widget.browser.open("https://flutter.io/");
+            await widget.browser.open("https://flutter.dev/");
           },
           child: Text("Open Chrome Safari Browser")),
     );

example/lib/inline_example.screen.dart

@@ -40,9 +40,12 @@ class _InlineExampleScreenState extends State<InlineExampleScreen> {
           decoration:
               BoxDecoration(border: Border.all(color: Colors.blueAccent)),
           child: InAppWebView(
-            initialUrl: "https://flutter.io/",
+            initialUrl: "https://flutter.dev/",
             initialHeaders: {},
-            initialOptions: {},
+            initialOptions: {
+              "useShouldOverrideUrlLoading": true,
+              "useOnLoadResource": true
+            },
             onWebViewCreated: (InAppWebViewController controller) {
               webView = controller;
             },
@@ -52,12 +55,22 @@ class _InlineExampleScreenState extends State<InlineExampleScreen> {
                 this.url = url;
               });
             },
+            onLoadStop: (InAppWebViewController controller, String url) {
+              print("stopped $url");
+            },
             onProgressChanged:
                 (InAppWebViewController controller, int progress) {
               setState(() {
                 this.progress = progress / 100;
               });
             },
+            shouldOverrideUrlLoading: (InAppWebViewController controller, String url) {
+              print("override $url");
+              controller.loadUrl(url);
+            },
+            onLoadResource: (InAppWebViewController controller, WebResourceResponse response, WebResourceRequest request) {
+              print("resource " + request.url);
+            }
           ),
         ),
       ),

example/lib/main.dart

@@ -5,7 +5,10 @@ import 'package:flutter_inappbrowser_example/chrome_safari_example.screen.dart';
 import 'package:flutter_inappbrowser_example/inline_example.screen.dart';
 import 'package:flutter_inappbrowser_example/webview_example.screen.dart';
 
+// InAppLocalhostServer localhostServer = new InAppLocalhostServer();
+
 Future main() async {
+  // await localhostServer.start();
   runApp(new MyApp());
 }
 

example/lib/webview_example.screen.dart

@@ -65,7 +65,7 @@ class MyInappBrowser extends InAppBrowser {
 }
 
 class WebviewExampleScreen extends StatefulWidget {
-  final InAppBrowser browser = new MyInappBrowser();
+  final MyInappBrowser browser = new MyInappBrowser();
   @override
   _WebviewExampleScreenState createState() => new _WebviewExampleScreenState();
 }
@@ -81,7 +81,10 @@ class _WebviewExampleScreenState extends State<WebviewExampleScreen> {
     return new Center(
       child: new RaisedButton(
           onPressed: ()  {
-            widget.browser.open(url:"https://flutter.io/");
+            widget.browser.open(url: "https://flutter.dev/", options: {
+              "useShouldOverrideUrlLoading": true,
+              "useOnLoadResource": true
+            });
           },
           child: Text("Open Webview Browser")),
     );

example/pubspec.yaml

@@ -40,6 +40,9 @@ flutter:
 
   assets:
     - assets/index.html
+    - assets/page-1.html
+    - assets/page-2.html
+    - assets/page-3.html
     - assets/css/
     - assets/images/
 

flutter_inappbrowser.iml

@@ -20,6 +20,8 @@
       <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/.dart_tool" />
       <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/.pub" />
       <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/build" />
+      <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/ios/Flutter/App.framework/flutter_assets/packages" />
+      <excludeFolder url="file://$MODULE_DIR$/example/ios/.symlinks/plugins/flutter_inappbrowser/example/ios/Flutter/flutter_assets/packages" />
       <excludeFolder url="file://$MODULE_DIR$/example/ios/Flutter/App.framework/flutter_assets/packages" />
       <excludeFolder url="file://$MODULE_DIR$/example/ios/Flutter/flutter_assets/packages" />
     </content>

ios/Classes/FlutterWebViewController.swift

@@ -24,7 +24,7 @@ public class FlutterWebViewController: NSObject, FlutterPlatformView {
         self.channel = FlutterMethodChannel(name: channelName, binaryMessenger: registrar.messenger())
         self.channel?.setMethodCallHandler(self.handle)
         
-        var initialUrl = (args["initialUrl"] as? String)!
+        let initialUrl = (args["initialUrl"] as? String)!
         let initialFile = args["initialFile"] as? String
         let initialData = args["initialData"] as? [String: String]
         let initialHeaders = (args["initialHeaders"] as? [String: String])!
@@ -134,35 +134,29 @@ public class FlutterWebViewController: NSObject, FlutterPlatformView {
                     webView!.injectScriptCode(source: source, result: result)
                 }
                 else {
-                    result(false)
+                    result("")
                 }
                 break
             case "injectScriptFile":
                 if webView != nil {
                     let urlFile = (arguments!["urlFile"] as? String)!
-                    webView!.injectScriptFile(urlFile: urlFile, result: result)
-                }
-                else {
-                    result(false)
+                    webView!.injectScriptFile(urlFile: urlFile)
                 }
+                result(true)
                 break
             case "injectStyleCode":
                 if webView != nil {
                     let source = (arguments!["source"] as? String)!
-                    webView!.injectStyleCode(source: source, result: result)
-                }
-                else {
-                    result(false)
+                    webView!.injectStyleCode(source: source)
                 }
+                result(true)
                 break
             case "injectStyleFile":
                 if webView != nil {
                     let urlFile = (arguments!["urlFile"] as? String)!
-                    webView!.injectStyleFile(urlFile: urlFile, result: result)
-                }
-                else {
-                    result(false)
+                    webView!.injectStyleFile(urlFile: urlFile)
                 }
+                result(true)
                 break
             case "reload":
                 if webView != nil {

ios/Classes/InAppBrowserWebViewController.swift

@@ -154,7 +154,7 @@ class InAppBrowserWebViewController: UIViewController, UIScrollViewDelegate, WKU
             loadUrl(url: self.initURL!, headers: self.initHeaders)
         }
         else {
-            loadData(data: initData!, mimeType: initMimeType!, encoding: initEncoding!, baseUrl: initBaseUrl!)
+            webView.loadData(data: initData!, mimeType: initMimeType!, encoding: initEncoding!, baseUrl: initBaseUrl!)
         }
         
         navigationDelegate?.onBrowserCreated(uuid: uuid, webView: webView)
@@ -225,16 +225,6 @@ class InAppBrowserWebViewController: UIViewController, UIScrollViewDelegate, WKU
         updateUrlTextField(url: (webView.currentURL?.absoluteString)!)
     }
     
-    func loadData(data: String, mimeType: String, encoding: String, baseUrl: String) {
-        webView.loadData(data: data, mimeType: mimeType, encoding: encoding, baseUrl: baseUrl)
-    }
-    
-    func postUrl(url: URL, postData: Data, result: @escaping FlutterResult) {
-        webView.postUrl(url: url, postData: postData, completionHandler: { () -> Void in
-            result(true)
-        })
-    }
-    
     // Load user requested url
     func textFieldShouldReturn(_ textField: UITextField) -> Bool {
         textField.resignFirstResponder()

ios/Classes/InAppWebView.swift

@@ -279,8 +279,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         if assetURL == nil {
             throw NSError(domain: url + " asset file cannot be found!", code: 0)
         }
-        let absoluteUrl = URL(string: url)!.absoluteURL
-        loadUrl(url: absoluteUrl, headers: headers)
+        loadUrl(url: assetURL!, headers: headers)
     }
     
     func setOptions(newOptions: InAppWebViewOptions, newOptionsMap: [String: Any]) {
@@ -440,19 +439,19 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         injectDeferredObject(source: source, withWrapper: jsWrapper, result: result)
     }
     
-    public func injectScriptFile(urlFile: String, result: FlutterResult?) {
+    public func injectScriptFile(urlFile: String) {
         let jsWrapper = "(function(d) { var c = d.createElement('script'); c.src = %@; d.body.appendChild(c); })(document);"
-        injectDeferredObject(source: urlFile, withWrapper: jsWrapper, result: result)
+        injectDeferredObject(source: urlFile, withWrapper: jsWrapper, result: nil)
     }
     
-    public func injectStyleCode(source: String, result: FlutterResult?) {
+    public func injectStyleCode(source: String) {
         let jsWrapper = "(function(d) { var c = d.createElement('style'); c.innerHTML = %@; d.body.appendChild(c); })(document);"
-        injectDeferredObject(source: source, withWrapper: jsWrapper, result: result)
+        injectDeferredObject(source: source, withWrapper: jsWrapper, result: nil)
     }
     
-    public func injectStyleFile(urlFile: String, result: FlutterResult?) {
+    public func injectStyleFile(urlFile: String) {
         let jsWrapper = "(function(d) { var c = d.createElement('link'); c.rel='stylesheet', c.type='text/css'; c.href = %@; d.body.appendChild(c); })(document);"
-        injectDeferredObject(source: urlFile, withWrapper: jsWrapper, result: result)
+        injectDeferredObject(source: urlFile, withWrapper: jsWrapper, result: nil)
     }
     
     public func getCopyBackForwardList() -> [String: Any] {

pubspec.yaml

 name: flutter_inappbrowser
 description: A Flutter plugin that allows you to add an inline webview or open an in-app browser window (inspired by the popular cordova-plugin-inappbrowser).
-version: 1.0.0
+version: 1.0.1
 author: Lorenzo Pichilli <pichillilorenzo@gmail.com>
 homepage: https://github.com/pichillilorenzo/flutter_inappbrowser