一个简单的wifi状态提示广播

来源：互联网发布：阿里云elb 编辑：程序博客网时间：2024/04/30 11:07

android系统的wifi状态我们是可以通过WifiManager类获取到的，总共有五种状态：

       WifiManager.WIFI_STATE_DISABLING   正在停止
   WifiManager.WIFI_STATE_DISABLED    已停止
   WifiManager.WIFI_STATE_ENABLING    正在打开
   WifiManager.WIFI_STATE_ENABLED     已开启
   WifiManager.WIFI_STATE_UNKNOWN     未知

但有些设备上获取这些状态信息未必很准确，这我想跟很多因素有关。这里贴一个简单的wifi状态广播，以消息的方式提斯wifi的两种状态。

code：

public class WifiStatusBroadcast extends BroadcastReceiver {
private static final String TAG = "WifiStatusBroadcast";

    private static String Opened = null;
    private static String Closed = null;
    public static boolean wifi_enabled = false;
    public void onReceive(Context context, Intent intent) {
        Log.d(TAG, "onReceive:"+intent.getAction());

Log.d(TAG, "In ACTION_BOOT_COMPLETED");

        Opened = context.getResources().getString(R.string.wifi_opened);
        Log.d(TAG,"Wifistatus"+Opened);
        Closed = context.getResources().getString(R.string.wifi_closed);
        Log.d(TAG,"Wifistatus"+Closed);
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        final NetworkInfo activeNetInfo = (NetworkInfo) intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
        Log.d(TAG,"activeNetInfo is "+activeNetInfo);
        if(activeNetInfo != null && activeNetInfo.isConnected())
        {
             if(wifi_enabled == false)
             {
                Toast.makeText(context,Opened,2000).show();
                wifi_enabled = true;
            }
             Log.d(TAG,"wifi was connected");
        }else{
            if(wifi_enabled == true)
            {
                Toast.makeText(context,Closed,5000).show();
                wifi_enabled = false;
            }
             Log.d(TAG,"wifi was disconnected");
        }
    }

}

可以写成一个系统apk，也可写到framework下编译后即可。当wifi状态改变时即通会发出广播，这个类就可以接收到并做一些处理。