android app 与 web 之间的调用

1 app call web 

package com.fan.test;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;

public class TestActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    //执行app时调用浏览器打开 baidu
    //设定一个定时器，防止不能跳转
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        final Uri uri = Uri.parse("http://www.baidu.com");        
        final Intent it = new Intent(Intent.ACTION_VIEW, uri);        
        
        Timer timer = new Timer();
        TimerTask task = new TimerTask() {
               @Override
               public void run() {
                startActivity(it); //执行
               }
              };
            timer.schedule(task, 1); //10秒后
    }  
    
    //返回时自动退出
    public void onRestart()
    {
        super.onRestart();        
        System.exit(0);

    }
}

        Button bn = (Button)findViewById(R.id.button1);
        bn.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                

                //doLogin(true,true);
                //printStringJNI("hello");
                
                
                
                final Uri uri = Uri.parse("http://www.baidu.com");        
                final Intent it = new Intent(Intent.ACTION_VIEW, uri);        
                //不用定时器也行, 不是必须的
                Timer timer = new Timer();
                TimerTask task = new TimerTask() {
                       @Override
                       public void run() {
                        startActivity(it); //执行
                       }
                     };
                timer.schedule(task, 2000); //10秒后
                
            }
        });

androidManifest.xml 文件中加入
   <activity android:name=".TestActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>           
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="http" />
                <data android:scheme="https" />
                <data android:scheme="about" />
                <data android:scheme="javascript" />
            </intent-filter>
            
        </activity>

 2 web call app