使用webview加载本地html页面,并处理html页面中的javascript事件

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WebViewDemo.java

package com.test.activity;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.Toast;

import com.test.model.Person;

public class WebViewDemo extends Activity {
	private WebView mWebView;
	private Handler mHandler = new Handler();

	public void onCreate(Bundle icicle) {
		super.onCreate(icicle);
		setContentView(R.layout.webviewdemo);
		mWebView = (WebView) findViewById(R.id.webview);
		WebSettings webSettings = mWebView.getSettings();
		webSettings.setJavaScriptEnabled(true);

		mWebView.addJavascriptInterface(new Object() {
			List<Person> persons = new ArrayList<Person>();

			/**
			 * 由html页面中调用该方法,获得persons的size(),并动态的生成该数量的button
			 */
			public void clickOnAndroid() {
				mHandler.post(new Runnable() {
					public void run() {
						// System.out.println("hello");
						int nums = 10;
						for (int i = 0; i < nums; i++) {
							Person person = new Person();
							person.name = "name" + (i + 1);
							person.age = (i + 1) + "";
							persons.add(person);
						}
						String javascript = "javascript:wave(" + nums + ")";
						mWebView.loadUrl(javascript);
					}
				});
			}

			/**
			 * 由HTML页面调用,点击动态生成的button,
			 * 
			 * @param num
			 *            list序号
			 */
			public void show(int num) {
				System.out.println(num);
				Person p = persons.get(num);
				Toast
						.makeText(WebViewDemo.this,
								"姓名: " + p.name + "   年龄: " + p.age,
								Toast.LENGTH_SHORT).show();
			};
		}, "demo");

		// 加载本地html页面
		mWebView.loadUrl("file:///android_asset/demo.html");
	}
}

package com.test.model;

public class Person {
	public String name;
	public String age;
}