检查网络是否连接的工具类

最新推荐文章于 2024-11-20 10:01:08 发布

安卓小菜鸟进阶路

最新推荐文章于 2024-11-20 10:01:08 发布

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 必须先加下面这两个权限,网络访问权限和差来看网络状态权限

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

@Override    
protected void onCreate(Bundle savedInstanceState) {   
     super.onCreate(savedInstanceState);     
       setContentView(R.layout.activity_main);     
       listview = (ListView) findViewById(R.id.listview);   
     if (isConnection(this)) {

    下面这个方法是自定义的网络请求数据方法,就不上传了
            getDataByWeb();
        } else {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setMessage("网络链接中断,是否设置链接网络");
            builder.setNegativeButton("取消", null);
            builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                                                  Intent intent = new Intent();
                                 intent.setAction("android.net.wifi.PICK_WIFI_NETWORK");
                                 startActivity(intent);
                }            });            builder.create().show();        }    }    public boolean isConnection(Context context) {        ConnectivityManager manager = (ConnectivityManager)         context.getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo info = manager.getActiveNetworkInfo();        return (info != null && info.isAvailable());    }