diff options
Diffstat (limited to 'wallet/src/main/java/net/taler/wallet/NetworkManager.kt')
-rw-r--r-- | wallet/src/main/java/net/taler/wallet/NetworkManager.kt | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/wallet/src/main/java/net/taler/wallet/NetworkManager.kt b/wallet/src/main/java/net/taler/wallet/NetworkManager.kt new file mode 100644 index 0000000..a45ad48 --- /dev/null +++ b/wallet/src/main/java/net/taler/wallet/NetworkManager.kt @@ -0,0 +1,64 @@ +/* + * This file is part of GNU Taler + * (C) 2023 Taler Systems S.A. + * + * GNU Taler is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 3, or (at your option) any later version. + * + * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + * A PARTICULAR PURPOSE. See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along with + * GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ + +package net.taler.wallet + +import android.content.Context +import android.content.Context.CONNECTIVITY_SERVICE +import android.net.ConnectivityManager +import android.net.Network +import android.net.NetworkCapabilities +import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET +import android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED +import androidx.annotation.UiThread +import androidx.lifecycle.LiveData +import androidx.lifecycle.MutableLiveData + +class NetworkManager(context: Context) : ConnectivityManager.NetworkCallback() { + private val connectivityManager: ConnectivityManager + + private val _networkStatus: MutableLiveData<Boolean> + val networkStatus: LiveData<Boolean> + + init { + // careful, the order below is important, should probably get simplified + connectivityManager = context.getSystemService(CONNECTIVITY_SERVICE) as ConnectivityManager + _networkStatus = MutableLiveData(getCurrentStatus()) + networkStatus = _networkStatus + connectivityManager.registerDefaultNetworkCallback(this) + } + + @UiThread + override fun onCapabilitiesChanged(network: Network, networkCapabilities: NetworkCapabilities) { + super.onCapabilitiesChanged(network, networkCapabilities) + _networkStatus.postValue(networkCapabilities.isOnline()) + } + + override fun onLost(network: Network) { + super.onLost(network) + _networkStatus.postValue(getCurrentStatus()) + } + + private fun getCurrentStatus(): Boolean { + return connectivityManager.activeNetwork?.let { network -> + connectivityManager.getNetworkCapabilities(network)?.isOnline() + } ?: false + } + + private fun NetworkCapabilities.isOnline(): Boolean { + return hasCapability(NET_CAPABILITY_INTERNET) && hasCapability(NET_CAPABILITY_VALIDATED) + } +} |