用JavaScriptCore js调用OC

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>失败</title>
    <script type="text/javascript">
        function redirectNative() {
            bluewhale.funTo("FAIL");
        }
    </script>
    <style>
        .msg {
            width: 100%;
            margin-top: 30%;
            font-size: 30px;
            font-weight: lighter;
            text-align: center;
        }

        .btn {
            margin-top: 60%;
            background-color: #1478f0;
            position: relative;
            height: 45px;
            bottom: 20%;
            left: 10%;
            width: 80%;
            font-size: 20px;
            color: white;
            font-weight: lighter;
            border-radius: 5px;
        }
    </style>
</head>
<body>
<div>
    <div class="msg">${message}</div>
</div>
<div><img src=""/></div>
<button class="btn" onclick="redirectNative()">返回</button>
</body>
</html>

  1. 如果你是要调用redirectNative()，哪么简单了
    在 - (void)webViewDidFinishLoad:(UIWebView *)webView方法里：
    JSContext *jsContext = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

    jsContext[@"redirectNative"] = ^() {
    dispatch_async(dispatch_get_main_queue(), ^{
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:@"js_redirectNative调用OC" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
    [alertView show];
    });
    };

  2. 如果你是想实现 bluewhale.funTo("FA1IL"); 调用OC，哪么就稍微复杂点

    （1）协议
    @protocol TestProtocol

                - (void)funTo:(NSString *)some; //这个方法与你js方法同名，同个数的参数

    @end

（2）

    @interface TestModel()

        @end

    @implementation TestModel

    - (void)funTo:(NSString *)some
    {

    dispatch_async(dispatch_get_main_queue(), ^{
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:some delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
    [alertView show];
    });
    }
    @end

    (3) 还是在- (void)webViewDidFinishLoad:(UIWebView *)webView方法里：

    JSContext *jsContext = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

    //如果是funTo调用
    TestModel *tm = [TestModel new];
    jsContext[@"bluewhale"] = tm;

    你可以根据这些自己在整理封装下

卧槽，版式乱了点，有点强迫症，你可以根据这些自己再封装下。

  • 如果你是要调用redirectNative()，哪么简单了
    在 - (void)webViewDidFinishLoad:(UIWebView *)webView方法里：

    JSContext *jsContext = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

jsContext[@"redirectNative"] = ^() {
    dispatch_async(dispatch_get_main_queue(), ^{
            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:@"js_redirectNative调用OC" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
            [alertView show];
    });
};

  • 如果你是想实现 bluewhale.funTo("FA1IL"); 调用OC，哪么就稍微复杂点

    （1）协议
                @protocol TestProtocol
    - (void)funTo:(NSString *)some; //这个方法与你js方法同名，同个数的参数
                @end

（2） 模型
                    @interface TestModel()

                    @end

                    @implementation TestModel

                    - (void)funTo:(NSString *)some
                    {
                                dispatch_async(dispatch_get_main_queue(), ^{
                                            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:some delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
                                            [alertView show];
                                });
                    }
                @end

(3) 还是在- (void)webViewDidFinishLoad:(UIWebView *)webView方法里：

                JSContext *jsContext = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

                    //点击按钮可以看
                    TestModel *tm = [TestModel new];
                    jsContext[@"bluewhale"] = tm;