判断网络链接

weiyage

于 2013-01-11 08:15:41 发布

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本文链接：https://blog.youkuaiyun.com/weiyage/article/details/8492051

版权

         需要加入的权限是：
             <uses-permission android:name="android.permission.INTERNET" />
              <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />


        protected boolean CheckNetwork1() {
    	 // TODO Auto-generated method stub
    	boolean flag=false;
    	ConnectivityManager cwjManager=(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
    	 if(cwjManager.getActiveNetworkInfo()!=null)
    	flag=cwjManager.getActiveNetworkInfo().isAvailable();
    	if(!flag){
    	Builder b=new AlertDialog.Builder(this).setTitle("没有可用的网络").setMessage("请开启GPRS或WIFI网路连接");
    	b.setPositiveButton("确定",new DialogInterface.OnClickListener() {
    	public void onClick(DialogInterface dialog, int which) {
    	 // TODO Auto-generated method stub
    
    	}
    	}).setNegativeButton("取消", new DialogInterface.OnClickListener() {
    	public void onClick(DialogInterface dialog, int which) {
    	// TODO Auto-generated method stub dialog.cancel();
    	}
    	}).create(); b.show();
    	 }
    	 return flag;
    	}