Android调用默认浏览器打开指定Url的方法实例

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(//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.