复制代码 代码如下:
package com.gzz.whyinzi;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {
    private static final String TAG = "ActivityDemo";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

       
        Intent intent = new Intent();       
        intent.setAction("android.intent.action.VIEW");   
        Uri content_url = Uri.parse(http://www.jb51.net);  
        intent.setData(content_url); 
        startActivity(intent);

       
    }

        @Override 
        protected void onResume() { 
            super.onResume();
            Intent intent = new Intent();       
            intent.setAction("android.intent.action.VIEW");   
            Uri content_url = Uri.parse("http://play.jb51.net");  
            intent.setData(content_url); 
            startActivity(intent);
            Log.e(TAG, "start onResume~~~"); 
        } 

        @Override 
        protected void onStop() { 
            super.onStop(); 
            this.finish();
            Log.e(TAG, "start onStop~~~"); 
        } 
}

onResume()在没有默认浏览器的时候就起作用了,当没有默认浏览器的时候会弹出提示以哪个浏览器打开,如果点击取消就会出现黑色背景,为防止出现黑色背景,onsume()重新调用打开浏览器.

onStop()在选择浏览器后结束进程.