回应 sabsab。为了连接到 Connectivity Change 广播接收器,我使用了 warbi 的答案并添加了一个带有静态方法的类。
public class WifiHelper
{
private static boolean isConnectedToWifi;
private static WifiConnectionChange sListener;
public interface WifiConnectionChange {
void wifiConnected(boolean connected);
}
/**
* Only used by Connectivity_Change broadcast receiver
* @param connected
*/
public static void setWifiConnected(boolean connected) {
isConnectedToWifi = connected;
if (sListener!=null)
{
sListener.wifiConnected(connected);
sListener = null;
}
}
public static void setWifiListener(WifiConnectionChange listener) {
sListener = listener;
}
}
然后我对上面显示的第一个答案的接收器类进行了更改。
public class ConnectivityReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
ConnectivityManager conMan = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = conMan.getActiveNetworkInfo();
if (netInfo != null && netInfo.getType() == ConnectivityManager.TYPE_WIFI)
{
Log.d("WifiReceiver", "Have Wifi Connection");
WifiHelper.setWifiConnected(true);
} else
{
Log.d("WifiReceiver", "Don't have Wifi Connection");
WifiHelper.setWifiConnected(false);
}
}
}
最后,在您的活动中,您可以添加一个侦听器来利用此回调。
wifiManager = (WifiManager) getContext().getSystemService(Context.WIFI_SERVICE);
wasWifiEnabled = (wifiManager.getWifiState() == WifiManager.WIFI_STATE_ENABLED || wifiManager.getWifiState() == WifiManager.WIFI_STATE_ENABLING);
WifiHelper.setWifiListener(new WifiHelper.WifiConnectionChange()
{
@Override
public void wifiConnected(boolean connected)
{
//Do logic here
}
});
注意回调触发后监听器被移除,这是因为它是一个静态监听器。无论如何,这个实现对我来说是有效的,并且是挂钩你的活动的一种方式,或者任何地方都让它是静态的。