Question

在我的应用程序中，我必须自动知道wifi状态，即用户是否连接到Wifi而没有用户操作。此外，我想检测用户何时不使用应用程序。有什么办法吗？我是Android的新手。

Answer 1

最适合我的方式：

AndroidManifest

<receiver android:name="com.AEDesign.communication.WifiReceiver" >
   <intent-filter android:priority="100">
      <action android:name="android.net.wifi.STATE_CHANGE" />
   </intent-filter>
</receiver>

BroadcastReceiver类

public class WifiReceiver extends BroadcastReceiver {

   @Override
   public void onReceive(Context context, Intent intent) {

      NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
      if(info != null) {
         if(info.isConnected()) {
            // Do your work. 

            // e.g. To check the Network Name or other info:
            WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
            WifiInfo wifiInfo = wifiManager.getConnectionInfo();
            String ssid = wifiInfo.getSSID();
         }
      }
   }
}

on recive将自动调用。

Answer 2

WifiManager wifi = (WifiManager)getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled()){
//wifi is enabled
}

有关详情，请查看here

或

ConnectivityManager connManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

if (networkInfo.isConnected()) {
    // Do whatever
}

在Android中自动检测wifi状态

2 个答案: