I've added support for WKWebView which was requested in issue #84.

How does it work: WKWebView support is opt-in. In order to use WKWebView you need to instantiate the WKWebViewJavascriptBridge. The rest of the WKWebViewJavascriptBridge API is the same as WebViewJavascriptBridge.

1. Import the header file:

#import "WKWebViewJavascriptBridge.h"

2. Instantiate WKWebViewJavascriptBridge and with a WKWebView object

WKWebViewJavascriptBridge* bridge = [WKWebViewJavascriptBridge bridgeForWebView:webView handler:^(id data, WVJBResponseCallback responseCallback) {
    // etc
}];

Where to start Take a look at the WKWebViewJavascriptBridge.m file first as it has most of the logic. The two important differences are that the delegates for WKWebView have been changed and that the response for evaluating Javascript is now returned in a callback.

| UIWebView | WKWebView Equivalent | | --- | --- | | didFailLoadWithError | didFailNavigation | | webViewDidFinishLoad | didFinishNavigation | | webViewDidStartLoad | didStartProvisionalNavigation | | shouldStartLoadWithRequest | decidePolicyForNavigationAction |

How to test this Pull down the branch and try to run the example application. Try running it in XCode 5 and 6 to test out iOS7 and iOS8 respectively. If you're using Pods, point to this branch and see if it works in one of your existing apps.

Extra

1. Can someone please test this out on OSX 10.10? I don't have a machine currently running Yosemite.
2. I'm also currently testing this against a bigger iOS project, Stacker, in the feature/wkwebkit branch to make sure WebViewJavascriptBridge works as advertised.
3. I think there's lots of room to DRY up the code between WebViewJavascriptBridge and WKWebViewJavascriptBridge however I think that should be left for another PR.

'Completion handler passed to -[WKWebViewJavascriptBridge webView:decidePolicyForNavigationAction:decisionHandler:] was not called'

reason: 'Completion handler passed to -[WKWebViewJavascriptBridge webView:decidePolicyForNavigationAction:decisionHandler:] was called more than once'

How to resolve this problem ?? thank you .

WVJB Bug Report

Thanks for reporting an issue with WebViewJavascriptBridge.

Do these 4 things and I will fix your problem!

1. Go to https://github.com/marcuswestin/WebViewJavascriptBridge and click Fork.
2. Clone your fork, cd into it and run make test. All tests should pass!
3. Edit Tests/WebViewJavascriptBridgeTests/BridgeTests.m and create a new, failing test which demostrates your issue.
4. Create a pull request for https://github.com/marcuswestin/WebViewJavascriptBridge

That's it!

I will take it from there and promise that I'll fix your problem ASAP.

If you don't do this then I can't help you!

And I probably won't :)

Cheers, @marcuswestin

First of all, thanks for this great library! It works great :)

I was wondering if you've got any idea about how to implement returning values to JS from native calls. I've not been able to come up with a good solution so far, but it'd be awesome to be able to calla a native Obj-C function and get a return value back.

It was good to work with WVJsBrige as a component for fluid interop between native and web code. I'd love to continue using WKWebView as I port the reference WebView-based app framework for our products and client projects.

Until 10.10 becomes stable enough to develop in, we can use the iOS 8 SDK to start working on a port. I'd like to start one soon, and would love to hear from you regarding how you'd plan out an attack. Any feedback or advice would be welcome here.

- (void)webView:(WKWebView *)webView
decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction
decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
    if (webView != _webView) { return; }
    NSURL *url = navigationAction.request.URL;
    __strong typeof(_webViewDelegate) strongDelegate = _webViewDelegate;

    if ([_base isCorrectProcotocolScheme:url]) {
        if ([_base isBridgeLoadedURL:url]) {
            [_base injectJavascriptFile];
        } else if ([_base isQueueMessageURL:url]) {
            [self WKFlushMessageQueue];
        } else {
            [_base logUnkownMessage:url];
        }
        **decisionHandler(WKNavigationActionPolicyCancel);     //  executed**
    }
    
    if (strongDelegate && [strongDelegate respondsToSelector:@selector(webView:decidePolicyForNavigationAction:decisionHandler:)]) {
        **[_webViewDelegate webView:webView decidePolicyForNavigationAction:navigationAction decisionHandler:decisionHandler];          //  executed** 
    } else {
        decisionHandler(WKNavigationActionPolicyAllow);
    }
}

I implement the selector @selector(webView:decidePolicyForNavigationAction:decisionHandler:) and execute "decisionHandler(WKNavigationActionPolicyAllow);"

It seems the decisionHandler can be called twice and cause the crash. No such thing has happened before...

There is not error any more. Webview load url completely but not trigger call webViewDidFinishLoad

System: IOS7, iPhone4s

DetailViewController.h

#import <UIKit/UIKit.h>

@interface DetailViewController : UIViewController<UIWebViewDelegate>

@property (strong, nonatomic) id detailId;
@property (strong, nonatomic) id detailTitle;

@property (weak, nonatomic) IBOutlet UILabel *detailDescriptionLabel;

@end

DetailViewController.m

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    NSLog(@"Hide loading animation");
    [MBProgressHUD hideHUDForView:self.view animated:YES];
}

- (void)viewDidLoad
{
    UIWebView *webView = [viewController webView];
    [[webView scrollView] setBounces:NO];  
    [WebViewJavascriptBridge enableLogging];
    WebViewJavascriptBridge* bridge = [WebViewJavascriptBridge bridgeForWebView:webView webViewDelegate:self handler:^(id data, WVJBResponseCallback responseCallback) {
        NSLog(@"Received message from javascript: %@", data);
        if (responseCallback) {
            responseCallback(@"Right back atcha");
        }
    }];
}

Hi,

I'm trying to build a Hybrid app using the bridge (I'm literally a few days old in iOS dev) .

have a tabbar navigation based app, and I'm using a UIViewController for each tab view, one of the tab would use the WebView. I wast sure if I could implement WebViewJavascriptBridgeDelegate in a UIViewController class like below.

@interface CurrentTimeViewController : UIViewController <UIWebViewDelegate, WebViewJavascriptBridgeDelegate>

I get a EXC_BAD_ACC during runtime in the main class

int main(int argc, char *argv[]) { @autoreleasepool { return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); } }

Any pointer would be much appreciated. -Imran

We use WebViewJavascriptBridge heavily in our app, and we are running into a performance problem. It is taking between 200 and 1000 milliseconds (occasionally more) to send a group of messages from Objective-C and get their callback responses. I was able to get approximately a 10-fold decrease in the amount of time it takes to get a response by removing the setTimeout wrapper in _dispatchMessageFromObjC. I would like to submit a PR to make it so we can run without the setTimeout. Do you have a suggestion on how? Remove it entirely? Make a flag a parameter to bridgeForWebView?

Hi!

Could you please push the latest podspec (v 4.1.3) to the CocoaPods Trunk? As I see today the most recent version of the library in the cocoapods/specs repo is 4.1.0, but looks like you have 4.1.3 already tagged. I would be happy to use pod 'WebViewJavascriptBridge', '4.1.3' to get the latest version of the library.

In case you haven't yet setup with Trunk, then this article might be useful: Getting setup with Trunk. And here is an old blog post which is also might be useful CocoaPods Trunk.

Thanks in advance!

I used AFNetWorking to fetch data from remote service API, when the data ready, I tried to transfer the data back to javascript, but it raise an error. Any advice is appreciate. My code look like this.

^(id data, WVJBResponseCallback responseCallback) {
            NSLog(@"data: %@", data);
            NSString *service = [data objectForKey:@"service"];
            BOOL needLogin = [[data objectForKey:@"needLogin"] boolValue];
            NSDictionary *businessParams = [data objectForKey:@"businessParams"];

            [[AHAPIClient sharedClient] consumeRemoteService:service
                                                   needLogin:needLogin
                                              withParameters:businessParams
                                                     success:^(id JSON) {
                                                         responseCallback(JSON);
                                                     }
                                                     failure:^(NSError *error) {
                                                         responseCallback(error.userInfo);
                                                     }];
}

I code the test program. the .h file is

// // ViewController.h // test // // Created by remote roamer on 12-5-3. // Copyright (c) 2012年 MyCompanyName. All rights reserved. //

import <UIKit/UIKit.h>

import "WebViewJavascriptBridge.h"

import "AppDelegate.h"

@class AppDelegate;

@interface ViewController : UIViewController < WebViewJavascriptBridgeDelegate > { IBOutlet UIWebView * webView; }

@property(retain,nonatomic) UIWebView * webView;

@property(retain,nonatomic) WebViewJavascriptBridge * javascriptBridge;

@property(nonatomic,retain) NSBundle* bundle ;

@end

the .m file :

// // ViewController.m // test // // Created by remote roamer on 12-5-3. // Copyright (c) 2012年 MyCompanyName. All rights reserved. //

import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController @synthesize webView; @synthesize bundle; @synthesize javascriptBridge;

-(void) javascriptBridge:(WebViewJavascriptBridge *)bridge receivedMessage:(NSString *)message fromWebView:(UIWebView *)webView {

}

-(void) webViewDidStartLoad:(UIWebView *)webView { NSLog(@"loading html start"); //[MBProgressHUD showHUDAddedTo:self.webView animated:YES]; }

-(void) webViewDidFinishLoad:(UIWebView *)webView { NSLog(@"load html finish."); //[MBProgressHUD hideHUDForView:self.webView animated:YES]; }

-(void) webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error { NSLog(@"load html error:%@",error); //[MBProgressHUD hideHUDForView:self.webView animated:YES]; }

• (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization NSLog(@"initWithNibName"); //self.javascriptBridge = [WebViewJavascriptBridge javascriptBridgeWithDelegate: (AppDelegate *)([UIApplication sharedApplication]).delegate]; self.javascriptBridge = [WebViewJavascriptBridge javascriptBridgeWithDelegate:self];

  } return self; }

• (void)viewDidLoad { [super viewDidLoad]; NSLog(@"viewDidLoad");

  //self.webView.delegate = self; self.webView.delegate = self.javascriptBridge; self.bundle = [NSBundle mainBundle]; [webView loadHTMLString:@"aaa" baseURL:[NSURL fileURLWithPath:[bundle bundlePath]]];

  // Do any additional setup after loading the view, typically from a nib. }

• (void)viewDidUnload {

  [super viewDidUnload]; // Release any retained subviews of the main view. }

• (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; }

@end

When I run it , the logger info in console is :

2012-05-03 20:11:06.777 test[14860:f803] initWithNibName 2012-05-03 20:11:06.791 test[14860:f803] viewDidLoad 2012-05-03 20:11:06.813 test[14860:f803] loading html start 2012-05-03 20:11:06.836 test[14860:f803] loading html start 2012-05-03 20:11:06.837 test[14860:f803] load html finish. 2012-05-03 20:11:06.840 test[14860:f803] load html finish.

Why the html connent loaded twice?

ps： I‘m using the xcode 4.3.2 and the sdk is 5.1

我已经重构了这个库，10分钟就能完成接入,也许可以帮助你.  OC: https://github.com/SDBridge/SDBridgeOC  Swift: https://github.com/SDBridge/SDBridgeSwift Java: https://github.com/SDBridge/SDBridgeJava  Kotlin: https://github.com/SDBridge/SDBridgeKotlin 而且还有h5端参考对接的Demo https://github.com/SDBridge/TypeScriptDemo

I have redesigned new libraries, It only takes ten minutes to complete . Maybe can help you. OC: https://github.com/SDBridge/SDBridgeOC Swift: https://github.com/SDBridge/SDBridgeSwift

WVJB Bug Report

Thanks for reporting an issue with WebViewJavascriptBridge.

Do these 4 things and I will fix your problem!

1. Go to https://github.com/marcuswestin/WebViewJavascriptBridge and click Fork.
2. Clone your fork, cd into it and run make test. All tests should pass!
3. Edit Tests/WebViewJavascriptBridgeTests/BridgeTests.m and create a new, failing test which demostrates your issue.
4. Create a pull request for https://github.com/marcuswestin/WebViewJavascriptBridge

That's it!

I will take it from there and promise that I'll fix your problem ASAP.

If you don't do this then I can't help you!

And I probably won't :)

Cheers, @marcuswestin

 func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void)  这个回调不走了 只有iOS15.4 有这个问题

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