Android中WebView和JavaScript通信
Android提供了webview和JavaScript之间通信的api，这样就能做到native程序和html程序之间的交互，看下面的例子（html中调用js，传递两个字符串给java程序）：
java代码：
public class AndroidJsDemoActivity extends Activity {
private WebView mWebView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mWebView = (WebView) findViewById(R.id.webview);
WebSettings webSettings = mWebView.getSettings();
webSettings.setSavePassword(false);
webSettings.setSaveFormData(false);
webSettings.setJavaScriptEnabled(true);
webSettings.setSupportZoom(true);
mWebView.addJavascriptInterface(new DemoJavaScriptInterface(), "androidjsdemo");
mWebView.loadUrl("file:///android_asset/demo.html");
}
final class DemoJavaScriptInterface {
DemoJavaScriptInterface() {
}
public void test(String str1,String str2){
Intent intent=new Intent(AndroidJsDemoActivity.this,Activity2.class);
Bundle b=new Bundle();
b.putString("str1", str1);
b.putString("str2", str2);
intent.putExtras(b);
startActivity(intent);
}
}
}html代码：<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Insert title here</title>
</head>
<body>this is html page<p>
<input type="submit" value="buttons"
onclick="androidjsdemo.test('ddd','fff')"/>
</body>
</html>重点看代码中标红部分。
androidjsdemo与java程序中addJavascriptInterface(new DemoJavaScriptInterface(), "androidjsdemo")后面的参数对应test('ddd','fff')是使用的DemoJavaScriptInterface的方法
/**
* @author 张兴业
* 邮箱：xy-zhang#163.com
* android开发进阶群：278401545
*
*/
