JsCallJavaVideoActivity.java

package com.atguigu.androidandh5;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.webkit.JavascriptInterface;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

/**
 * 作者：尚硅谷-杨光福 on 2016/7/28 11:19
 * 微信：yangguangfu520
 * QQ号：541433511
 * 作用：java和js互调
 */
public class JsCallJavaVideoActivity extends Activity {

    private WebView webView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_js_call_java_video);
        webView = (WebView) findViewById(R.id.webview);
        WebSettings webSettings = webView.getSettings();
        //设置支持javaScript脚步语言
        webSettings.setJavaScriptEnabled(true);

        //支持双击-前提是页面要支持才显示
//        webSettings.setUseWideViewPort(true);

        //支持缩放按钮-前提是页面要支持才显示
        webSettings.setBuiltInZoomControls(true);

        //设置客户端-不跳转到默认浏览器中
        webView.setWebViewClient(new WebViewClient());

        //设置支持js调用java
        webView.addJavascriptInterface(new AndroidAndJSInterface(),"android");

        //加载网络资源
//        webView.loadUrl("http://atguigu.com/teacher.shtml");
        webView.loadUrl("file:///android_asset/RealNetJSCallJavaActivity.htm");
//        webView.loadUrl("http://10.0.2.2:8080/assets/RealNetJSCallJavaActivity.htm");

    }

    class AndroidAndJSInterface {
        /**
         * 该方法将被js调用
         * @param id
         * @param videoUrl
         * @param tile
         */
        @JavascriptInterface
        public void playVideo(int id,String videoUrl,String tile){
            //调起系统所有播放器
            Intent intent = new Intent();
            intent.setDataAndType(Uri.parse(videoUrl),"video/*");
            startActivity(intent);
        }
    }
}