由网友(忽如远行客)分享简介：我想创建一个插件的手机，它通过与返回的JavaScript和Android之间的值。 I want to create a plugin for phone which pass and returns the value between javascript and android. 任何人都可以提出关于如何做到...

我想创建一个插件的手机，它通过与返回的JavaScript和Android之间的值。

I want to create a plugin for phone which pass and returns the value between javascript and android.

任何人都可以提出关于如何做到这一点任何想法？

Can anybody suggest any ideas on how to do this?

推荐答案

其实这也不是很困难的。她，我会告诉你如何页面，反之亦然内调用本地code从JavaScript：

Actually this is not very difficult. Her I will show you how to call native code from javascript within the page and vise versa:

调用本机code从内部Web视图： 当创建Web视图中添加的JavaScript接口（基本的Java，它的方法将被暴露通过JavaScript在Web视图被称为类。

Calling native code from within web view: When creating the web view add javascript interface (basically java class whose methods will be exposed to be called via javascript in the web view.

JavaScriptInterface jsInterface = new JavaScriptInterface(this);
webView.getSettings().setJavaScriptEnabled(true);
webView.addJavascriptInterface(jsInterface, "JSInterface");

的JavaScript接口类本身的定义（这是实施例一类我从我的另一个答案，并在本地意图打开视频）

The definition of the javascript interface class itself (this is examplary class I took from another answer of mine and opens video in native intent)

   public class JavaScriptInterface {
    private Activity activity;

    public JavaScriptInterface(Activity activiy) {
        this.activity = activiy;
    }

    public void startVideo(String videoAddress){
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(Uri.parse(videoAddress), "video/3gpp"); // The Mime type can actually be determined from the file
        activity.startActivity(intent);
    }
}

现在，如果哟希望让此code构成您提供以下方法页面的HTML：

Now if yo want to call this code form the html of the page you provide the following method:

<script>
  function playVideo(video){
    window.JSInterface.startVideo(video);
  }
</script>

容易，不是吗？

Easy isn't it?

调用从本地code JavaScript的code ： 这也是您​​所定义的JavaScript函数的WebView加载htnl的code简单的假设：

Calling javascript code from native code: This is also simple suppose in the code of the htnl loaded in WebView you have javascript function defined:

<script>
  function function(){
    //... do something
  }
</script>

然后你通过web视图中的原生code类的调用这个函数：

Then you call this function through the WebView in the native code like that:

webView.loadUrl("javascript:function()");