下面提供一个演示的例子,代码如下:
package com.aloong.map;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.webkit.WebSettings;
import android.webkit.WebView;
9public class MyMap extends Activity {
private static String TAG = MyMap.class.getName();
private WebView mWebView;
private Handler mHandler;
private WebSettings mWebSettings;
/** *//** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mWebView = (WebView) this.findViewById(R.id.webview);
mHandler = new Handler();
// 设置支持JavaScript等
mWebSettings = mWebView.getSettings();
mWebSettings.setJavaScriptEnabled(true);
mWebSettings.setBuiltInZoomControls(true);
mWebSettings.setLightTouchEnabled(true);
mWebSettings.setSupportZoom(true);
mWebView.setHapticFeedbackEnabled(false);
// mWebView.setInitialScale(0); // 改变这个值可以设定初始大小
//重要,用于与页面交互!
mWebView.addJavascriptInterface(new Object() {
@SuppressWarnings("unused")
public void oneClick(final String locX, final String locY) {//此处的参数可传入作为js参数
mHandler.post(new Runnable() {
public void run() {
mWebView.loadUrl("javascript:shows(" + locX + "," + locY + ")");
}
});
}
}, "demo");//此名称在页面中被调用,方法如下:
//<body onClick="window.demo.clickOnAndroid(event.pageX,event.pageY)">
final String mimeType = "text/html";
final String encoding = "utf-8";
final String html = "";// TODO 从本地读取HTML文件
mWebView.loadDataWithBaseURL("file:///sdcard/", html, mimeType,
encoding, "");
}
}
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运行以上代码,就可以在程序中打开自己写的html页面.并且实现Java与JavaScript的双向交互.
我们甚至可以在页面中使用JQuery之类的框架制作出很好看的效果,而这比写Android代码我觉得简单多了.
