在Android中的寫法：
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final WebView web1=(WebView)findViewById(R.id.web1);
final Button mybutton=(Button)findViewById(R.id.myButton);
Handler h = new Handler();//聲明一個傳值的參數
web1.getSettings().setJavaScriptEnabled(true);//確定這個webview可以用JS
web1.addJavascriptInterface(new A(), "to2");//將本類對象添加到JS的全域對象window中.
web1.loadUrl("file:///android_asset/test.html");//這個是載入本工程的HTML地址，放在assets檔案夾中
WebViewClient webclient=new WebViewClient(){
@Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
}
};
web1.setWebViewClient(webclient);
}
class A{
public void a(){
這裡做相應的邏輯操作。
}
在html當中的寫法<title>無標題文檔</title>
<script type="text/javascript">
function f2(){
return window.to2.a();
}
</script>
</head>
<body>
<table align="center" width="724px" height="600px">
<tr align="center">
<td align="center">
<input name="submit" type="submit" value="跳轉" onclick="return f2()" />
</td>
</tr>
</table>
</body>
</html>
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