通知每次断开连接的WiFi

问题描述

我需要我的应用程序可以给一个通知，每当无线脱机。

I need my application to give a notification whenever WiFi goes offline.

我得到它的每一次给一个通知WiFi连接的变化。但我需要时，它脱机它只能给一个通知。

I got it to give a notification every time the WiFi connection changes. But I need it to only give a notification when it goes offline.

此外，它提供了在启动（应用）的通知。

Also it gives a notification on start-up (of the application).

我的问题是，我该如何改变code当无线脱机只给一个通知？现在，它给出了一个通知，当它脱机，联机和启动工作。

My question is, how do I alter the code to only give a notification when WiFi goes offline? Now it gives a notification when it goes offline, online and on start-up.

在code：

     public class MainActivity extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {

     super.onCreate(savedInstanceState);
     this.registerReceiver(this.mConnReceiver,
        new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
     setContentView(R.layout.activity_main);
     }

     private BroadcastReceiver mConnReceiver = new BroadcastReceiver() {
     public void onReceive(Context context, Intent intent) {
     boolean noConnectivity = intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false);
     String reason = intent.getStringExtra(ConnectivityManager.EXTRA_REASON);
     boolean isFailover = intent.getBooleanExtra(ConnectivityManager.EXTRA_IS_FAILOVER, false);

     NetworkInfo currentNetworkInfo = (NetworkInfo) intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
     NetworkInfo otherNetworkInfo = (NetworkInfo) intent.getParcelableExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO);

     if(currentNetworkInfo.isConnected()){

     }else{
        showNotification();
     }
 }
};

在此先感谢！

推荐答案

尝试这样的：

if(currentNetworkInfo != null &&
     currentNetworkInfo.getType() == ConnectivityManager.TYPE_WIFI &&
     currentNetworkInfo.getState() == NetworkInfo.State.DISCONNECTING) {
    showNotification();
}

也有其他可能的状态（如 NetworkInfo.State.DISCONNECTED ，也许这就是你想要的），你可以在这里找到完整的列表：

There are also other possible states(such as NetworkInfo.State.DISCONNECTED, maybe that is what you want), you can find the full list here:http://developer.android.com/reference/android/net/NetworkInfo.State.html

这篇关于通知每次断开连接的WiFi的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！