Schema

example/ios/Runner.xcodeproj/project.pbxproj

@@ -257,9 +257,14 @@
 			files = (
 			);
 			inputPaths = (
+				"${SRCROOT}/Pods/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
+				"${PODS_ROOT}/../../../../../flutter/bin/cache/artifacts/engine/ios/Flutter.framework",
+				"${BUILT_PRODUCTS_DIR}/flutter_webview_plugin/flutter_webview_plugin.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Flutter.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/flutter_webview_plugin.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
@@ -286,13 +291,16 @@
 			files = (
 			);
 			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
 			);
 			name = "[CP] Check Pods Manifest.lock";
 			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-Runner-checkManifestLockResult.txt",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
 			showEnvVarsInLog = 0;
 		};
 /* End PBXShellScriptBuildPhase section */

example/lib/main.dart

@@ -4,6 +4,9 @@ import 'package:flutter/material.dart';
 
 import 'package:flutter_webview_plugin/flutter_webview_plugin.dart';
 
+const kAndroidUserAgent =
+    "Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Mobile Safari/537.36";
+
 void main() {
   runApp(new MyApp());
 }
@@ -32,16 +35,22 @@ class MyHomePage extends StatefulWidget {
 
 class _MyHomePageState extends State<MyHomePage> {
   // Instance of WebView plugin
-  final FlutterWebviewPlugin flutterWebviewPlugin = new FlutterWebviewPlugin();
+  final FlutterWebViewPlugin flutterWebviewPlugin = new FlutterWebViewPlugin();
 
   // On destroy stream
   StreamSubscription _onDestroy;
 
   // On urlChanged stream
   StreamSubscription<String> _onUrlChanged;
 
-  TextEditingController _ctrl =
-  new TextEditingController(text: "https://flutter.io");
+  StreamSubscription<String> _onStateChanged;
+
+  TextEditingController _urlCtrl =
+      new TextEditingController(text: "http://github.com");
+
+  TextEditingController _codeCtrl =
+      new TextEditingController(text: "window.navigator.userAgent");
+
   GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey();
 
   final _history = [];
@@ -50,6 +59,14 @@ class _MyHomePageState extends State<MyHomePage> {
   initState() {
     super.initState();
 
+    _onStateChanged = flutterWebviewPlugin.stateChanged.listen((dynamic state) {
+      if (mounted) {
+        setState(() {
+          _history.add("stateChanged: $state");
+        });
+      }
+    });
+
     // Add a listener to on destroy WebView, so you can make came actions.
     _onDestroy = flutterWebviewPlugin.onDestroy.listen((_) {
       if (mounted) {
@@ -63,7 +80,7 @@ class _MyHomePageState extends State<MyHomePage> {
     _onUrlChanged = flutterWebviewPlugin.onUrlChanged.listen((String url) {
       if (mounted) {
         setState(() {
-          _history.add(url);
+          _history.add("onUrlChanged: $url");
         });
       }
     });
@@ -90,24 +107,56 @@ class _MyHomePageState extends State<MyHomePage> {
         children: [
           new Container(
             padding: const EdgeInsets.all(24.0),
-            child: new TextField(controller: _ctrl),
+            child: new TextField(controller: _urlCtrl),
+          ),
+          new RaisedButton(
+            onPressed: () {
+              flutterWebviewPlugin.launch(_urlCtrl.text,
+                  fullScreen: false,
+                  rect: new Rect.fromLTWH(
+                      0.0, 0.0, MediaQuery.of(context).size.width, 300.0),
+                  userAgent: kAndroidUserAgent);
+            },
+            child: new Text("Open Webview (rect)"),
           ),
           new RaisedButton(
-            onPressed: _onPressed,
-            child: new Text("Open Webview"),
+            onPressed: () {
+              flutterWebviewPlugin.launch(_urlCtrl.text, hidden: true);
+            },
+            child: new Text("Open 'hidden' Webview"),
           ),
-          new Text(_history.join(", "))
+          new RaisedButton(
+            onPressed: () {
+              flutterWebviewPlugin.launch(_urlCtrl.text, fullScreen: true);
+            },
+            child: new Text("Open Fullscreen Webview"),
+          ),
+          new Container(
+            padding: const EdgeInsets.all(24.0),
+            child: new TextField(controller: _codeCtrl),
+          ),
+          new RaisedButton(
+            onPressed: () {
+              Future<String> future =
+                  flutterWebviewPlugin.evalJavascript(_codeCtrl.text);
+              future.then((String result) {
+                setState(() {
+                  _history.add("eval: $result");
+                });
+              });
+            },
+            child: new Text("Eval some javascript"),
+          ),
+          new RaisedButton(
+            onPressed: () {
+              _history.clear();
+              flutterWebviewPlugin.close();
+            },
+            child: new Text("Close"),
+          ),
+          new Text(_history.join("\n"))
         ],
       ),
     );
   }
-
-  void _onPressed() {
-    try {
-      // This way you launch WebView with an url as a parameter.
-      flutterWebviewPlugin.launch(_ctrl.text);
-    } catch (e) {
-      print(e);
-    }
-  }
 }

ios/Classes/FlutterWebviewPlugin.h

@@ -5,5 +5,5 @@ static FlutterMethodChannel *channel;
 
 @interface FlutterWebviewPlugin : NSObject<FlutterPlugin>
 @property (nonatomic, retain) UIViewController *viewController;
-@property (nonatomic, retain) WebviewController *webviewController;
+@property (nonatomic, retain) UIWebView *webview;
 @end

ios/Classes/FlutterWebviewPlugin.m

@@ -1,15 +1,30 @@
 #import "FlutterWebviewPlugin.h"
 
 static NSString *const CHANNEL_NAME = @"flutter_webview_plugin";
+static NSString *const EVENT_CHANNEL_NAME = @"flutter_webview_plugin_event";
+
+// UIWebViewDelegate
+@interface FlutterWebviewPlugin() <UIWebViewDelegate, FlutterStreamHandler> {
+    FlutterEventSink _eventSink;
+    BOOL _enableAppScheme;
+}
+@end
 
 @implementation FlutterWebviewPlugin
 + (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
     channel = [FlutterMethodChannel
                methodChannelWithName:CHANNEL_NAME
                binaryMessenger:[registrar messenger]];
+
     UIViewController *viewController = (UIViewController *)registrar.messenger;
     FlutterWebviewPlugin* instance = [[FlutterWebviewPlugin alloc] initWithViewController:viewController];
+
     [registrar addMethodCallDelegate:instance channel:channel];
+
+    FlutterEventChannel* event =
+    [FlutterEventChannel eventChannelWithName:EVENT_CHANNEL_NAME
+                              binaryMessenger:[registrar messenger]];
+    [event setStreamHandler:instance];
 }
 
 - (instancetype)initWithViewController:(UIViewController *)viewController {
@@ -22,37 +37,137 @@ - (instancetype)initWithViewController:(UIViewController *)viewController {
 
 - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
     if ([@"launch" isEqualToString:call.method]) {
-        [self showWebView:call];
+        if (!self.webview)
+            [self initWebView:call];
+        else
+            [self launch:call];
         result(nil);
     } else if ([@"close" isEqualToString:call.method]) {
         [self closeWebView];
         result(nil);
+    } else if ([@"eval" isEqualToString:call.method]) {
+        result([self evalJavascript:call]);
     } else {
         result(FlutterMethodNotImplemented);
     }
 }
 
-- (void)showWebView:(FlutterMethodCall*)call {
-    NSString *url = call.arguments[@"url"];
-    NSNumber *withJavascript = call.arguments[@"withJavascript"];
+- (void)initWebView:(FlutterMethodCall*)call {
+    // NSNumber *withJavascript = call.arguments[@"withJavascript"];
     NSNumber *clearCache = call.arguments[@"clearCache"];
     NSNumber *clearCookies = call.arguments[@"clearCookies"];
-    NSNumber *fullScreen = call.arguments[@"fullScreen"];
+    NSNumber *hidden = call.arguments[@"hidden"];
+    NSDictionary *rect = call.arguments[@"rect"];
+    _enableAppScheme = call.arguments[@"enableAppScheme"];
+    NSString *userAgent = call.arguments[@"userAgent"];
 
-    self.webviewController = [[WebviewController alloc] initWithUrl:url withJavascript:withJavascript clearCache:clearCache clearCookes:clearCookies];
+    //
+    if ([clearCache boolValue]) {
+        [[NSURLCache sharedURLCache] removeAllCachedResponses];
+    }
 
-    if ([fullScreen boolValue]) {
-        [self.viewController presentViewController:self.webviewController animated:YES completion:nil];
+    if ([clearCookies boolValue]) {
+        [[NSURLSession sharedSession] resetWithCompletionHandler:^{
+        }];
+    }
+
+    CGRect rc;
+    if (rect) {
+        rc = CGRectMake([[rect valueForKey:@"left"] doubleValue],
+                               [[rect valueForKey:@"top"] doubleValue],
+                               [[rect valueForKey:@"width"] doubleValue],
+                               [[rect valueForKey:@"height"] doubleValue]);
     } else {
-        UINavigationController *navigation = [[UINavigationController alloc] initWithRootViewController:self.webviewController];
-        [self.viewController presentModalViewController:navigation animated:YES];
+        rc = self.viewController.view.bounds;
     }
+
+    if (userAgent) {
+        [[NSUserDefaults standardUserDefaults] registerDefaults:@{@"UserAgent": userAgent}];
+    }
+
+    self.webview = [[UIWebView alloc] initWithFrame:rc];
+    self.webview.delegate = self;
+
+    if (!hidden || ![hidden boolValue])
+        [self.viewController.view addSubview:self.webview];
+
+    [self launch:call];
+}
+
+- (void)launch:(FlutterMethodCall*)call {
+    NSString *url = call.arguments[@"url"];
+
+    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];
+    [self.webview loadRequest:request];
+}
+
+- (NSString *)evalJavascript:(FlutterMethodCall*)call {
+    NSString *code = call.arguments[@"code"];
+
+    NSString *result = [self.webview stringByEvaluatingJavaScriptFromString:code];
+    return result;
 }
 
 - (void)closeWebView {
-    [self.webviewController dismissViewControllerAnimated:YES completion:^{
-        [channel invokeMethod:@"onDestroy" arguments:nil];
-    }];
+    [self.webview stopLoading];
+    [self.webview removeFromSuperview];
+    self.webview.delegate = nil;
+    self.webview = nil;
+    [self sendEvent:@"destroy"];
+}
+
+
+#pragma mark -- WebView Delegate
+- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
+    NSArray *data = [NSArray arrayWithObjects:@"shouldStart",
+                     request.URL.absoluteString, [NSNumber numberWithInt:navigationType],
+                     nil];
+    [self sendEvent:data];
+
+    if (_enableAppScheme)
+        return YES;
+
+    // disable some scheme
+    return [request.URL.scheme isEqualToString:@"http"] ||
+            [request.URL.scheme isEqualToString:@"https"] ||
+            [request.URL.scheme isEqualToString:@"about"];
+}
+
+-(void)webViewDidStartLoad:(UIWebView *)webView {
+    [self sendEvent:@"startLoad"];
+}
+
+- (void)webViewDidFinishLoad:(UIWebView *)webView {
+    [self sendEvent:@"finishLoad"];
 }
 
+- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
+    id data = [FlutterError errorWithCode:[NSString stringWithFormat:@"%ld", error.code]
+                                  message:error.localizedDescription
+                                  details:error.localizedFailureReason];
+    [self sendEvent:data];
+}
+
+#pragma mark -- WkWebView Delegate
+
+#pragma mark -- FlutterStreamHandler impl
+
+- (FlutterError*)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)eventSink {
+    _eventSink = eventSink;
+    return nil;
+}
+
+- (FlutterError*)onCancelWithArguments:(id)arguments {
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    _eventSink = nil;
+    return nil;
+}
+
+- (void)sendEvent:(id)data {
+    // data should be @"" or [FlutterError]
+    if (!_eventSink)
+        return;
+
+    _eventSink(data);
+}
 @end