Java调用JavaScript

Start GoogleMap

package com.tutor.webwiewdemo;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.Button;
public class WebViewDemo extends Activity {private WebView mWebView;private Button mButton;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);setupViews();}//初始化private void setupViews() {mWebView &＃61; (WebView) findViewById(R.id.webview);WebSettings mWebSettings &＃61; mWebView.getSettings();//加上这句话才能使用Javascript方法mWebSettings.setJavascriptEnabled(true);//增加接口方法,让html页面调用mWebView.addJavascriptInterface(new Object() {//这里我定义了一个打开地图应用的方法public void startMap() {Intent mIntent &＃61; new Intent();ComponentName component &＃61; new ComponentName("com.google.android.apps.maps","com.google.android.maps.MapsActivity");mIntent.setComponent(component);startActivity(mIntent);}}, "demo");//加载页面mWebView.loadUrl("file:///android_asset/demo.html");mButton &＃61; (Button) findViewById(R.id.button);//给button添加事件响应,执行Javascript的fillContent()方法mButton.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {mWebView.loadUrl("Javascript:fillContent()");}});}
}