add javascriptChannelMessage for ios

example/ios/Runner.xcodeproj/project.pbxproj

@@ -181,7 +181,7 @@
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
 						CreatedOnToolsVersion = 7.3.1;
-						DevelopmentTeam = 2RC73M8QLE;
+						DevelopmentTeam = 9H45XEW7X9;
 					};
 				};
 			};
@@ -242,7 +242,7 @@
 			);
 			inputPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
-				"${PODS_ROOT}/../../../../../flutter/bin/cache/artifacts/engine/ios/Flutter.framework",
+				"${PODS_ROOT}/../../../../../../../Users/rin.lv/development/flutter/bin/cache/artifacts/engine/ios/Flutter.framework",
 				"${BUILT_PRODUCTS_DIR}/flutter_webview_plugin/flutter_webview_plugin.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
@@ -416,9 +416,9 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
 			buildSettings = {
-				ARCHS = arm64;
+				ARCHS = "$(ARCHS_STANDARD)";
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				DEVELOPMENT_TEAM = 2RC73M8QLE;
+				DEVELOPMENT_TEAM = 9H45XEW7X9;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -439,9 +439,9 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
 			buildSettings = {
-				ARCHS = arm64;
+				ARCHS = "$(ARCHS_STANDARD)";
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				DEVELOPMENT_TEAM = 2RC73M8QLE;
+				DEVELOPMENT_TEAM = 9H45XEW7X9;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",

example/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-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>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

example/ios/Runner/Info.plist

@@ -26,10 +26,6 @@
 	<string>LaunchScreen</string>
 	<key>UIMainStoryboardFile</key>
 	<string>Main</string>
-	<key>UIRequiredDeviceCapabilities</key>
-	<array>
-		<string>arm64</string>
-	</array>
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>

example/lib/main.dart

@@ -144,7 +144,7 @@ class _MyHomePageState extends State<MyHomePage> {
         flutterWebViewPlugin.onProgressChanged.listen((double progress) {
       if (mounted) {
         setState(() {
-          _history.add("onProgressChanged: $progress");
+          _history.add('onProgressChanged: $progress');
         });
       }
     });

ios/Classes/FlutterWebviewPlugin.m

@@ -1,4 +1,5 @@
 #import "FlutterWebviewPlugin.h"
+#import "JavaScriptChannelHandler.h"
 
 static NSString *const CHANNEL_NAME = @"flutter_webview_plugin";
 
@@ -7,6 +8,7 @@ static NSString *const CHANNEL_NAME = @"flutter_webview_plugin";
     BOOL _enableAppScheme;
     BOOL _enableZoom;
     NSString* _invalidUrlRegex;
+    NSMutableSet* _javaScriptChannelNames;
 }
 @end
 
@@ -86,6 +88,15 @@ static NSString *const CHANNEL_NAME = @"flutter_webview_plugin";
     NSNumber *scrollBar = call.arguments[@"scrollBar"];
     NSNumber *withJavascript = call.arguments[@"withJavascript"];
     _invalidUrlRegex = call.arguments[@"invalidUrlRegex"];
+    
+    _javaScriptChannelNames = [[NSMutableSet alloc] init];
+    
+    WKUserContentController* userContentController = [[WKUserContentController alloc] init];
+    if ([call.arguments[@"javascriptChannelNames"] isKindOfClass:[NSArray class]]) {
+        NSArray* javaScriptChannelNames = call.arguments[@"javascriptChannelNames"];
+        [_javaScriptChannelNames addObjectsFromArray:javaScriptChannelNames];
+        [self registerJavaScriptChannels:_javaScriptChannelNames controller:userContentController];
+    }
 
     if (clearCache != (id)[NSNull null] && [clearCache boolValue]) {
         [[NSURLCache sharedURLCache] removeAllCachedResponses];
@@ -117,7 +128,9 @@ static NSString *const CHANNEL_NAME = @"flutter_webview_plugin";
         rc = self.viewController.view.bounds;
     }
 
-    self.webview = [[WKWebView alloc] initWithFrame:rc];
+    WKWebViewConfiguration* configuration = [[WKWebViewConfiguration alloc] init];
+    configuration.userContentController = userContentController;
+    self.webview = [[WKWebView alloc] initWithFrame:rc configuration:configuration];
     self.webview.UIDelegate = self;
     self.webview.navigationDelegate = self;
     self.webview.scrollView.delegate = self;
@@ -354,6 +367,23 @@ static NSString *const CHANNEL_NAME = @"flutter_webview_plugin";
     decisionHandler(WKNavigationResponsePolicyAllow);
 }
 
+- (void)registerJavaScriptChannels:(NSSet*)channelNames
+                        controller:(WKUserContentController*)userContentController {
+    for (NSString* channelName in channelNames) {
+        FLTJavaScriptChannel* _channel =
+        [[FLTJavaScriptChannel alloc] initWithMethodChannel: channel
+                                      javaScriptChannelName:channelName];
+        [userContentController addScriptMessageHandler:_channel name:channelName];
+        NSString* wrapperSource = [NSString
+                                   stringWithFormat:@"window.%@ = webkit.messageHandlers.%@;", channelName, channelName];
+        WKUserScript* wrapperScript =
+        [[WKUserScript alloc] initWithSource:wrapperSource
+                               injectionTime:WKUserScriptInjectionTimeAtDocumentStart
+                            forMainFrameOnly:NO];
+        [userContentController addUserScript:wrapperScript];
+    }
+}
+
 #pragma mark -- UIScrollViewDelegate
 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
     if (scrollView.pinchGestureRecognizer.isEnabled != _enableZoom) {

ios/Classes/JavaScriptChannelHandler.h

@@ -0,0 +1,17 @@
+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import <Flutter/Flutter.h>
+#import <WebKit/WebKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FLTJavaScriptChannel : NSObject <WKScriptMessageHandler>
+
+- (instancetype)initWithMethodChannel:(FlutterMethodChannel*)methodChannel
+                javaScriptChannelName:(NSString*)javaScriptChannelName;
+
+@end
+
+NS_ASSUME_NONNULL_END

ios/Classes/JavaScriptChannelHandler.m

@@ -0,0 +1,36 @@
+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "JavaScriptChannelHandler.h"
+
+@implementation FLTJavaScriptChannel {
+  FlutterMethodChannel* _methodChannel;
+  NSString* _javaScriptChannelName;
+}
+
+- (instancetype)initWithMethodChannel:(FlutterMethodChannel*)methodChannel
+                javaScriptChannelName:(NSString*)javaScriptChannelName {
+  self = [super init];
+  NSAssert(methodChannel != nil, @"methodChannel must not be null.");
+  NSAssert(javaScriptChannelName != nil, @"javaScriptChannelName must not be null.");
+  if (self) {
+    _methodChannel = methodChannel;
+    _javaScriptChannelName = javaScriptChannelName;
+  }
+  return self;
+}
+
+- (void)userContentController:(WKUserContentController*)userContentController
+      didReceiveScriptMessage:(WKScriptMessage*)message {
+  NSAssert(_methodChannel != nil, @"Can't send a message to an unitialized JavaScript channel.");
+  NSAssert(_javaScriptChannelName != nil,
+           @"Can't send a message to an unitialized JavaScript channel.");
+  NSDictionary* arguments = @{
+    @"channel" : _javaScriptChannelName,
+    @"message" : [NSString stringWithFormat:@"%@", message.body]
+  };
+  [_methodChannel invokeMethod:@"javascriptChannelMessage" arguments:arguments];
+}
+
+@end