/**************************************************************************** ** ** Copyright (C) 2021 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the plugins of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ package org.qtproject.qt.android.networkinformation; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.net.ConnectivityManager; import android.net.ConnectivityManager.NetworkCallback; import android.net.NetworkRequest; import android.net.NetworkCapabilities; import android.net.Network; public class QtAndroidNetworkInformation { private static final String LOG_TAG = "QtAndroidNetworkInformation"; private static native void connectivityChanged(); private static native void behindCaptivePortalChanged(boolean state); private static QtNetworkInformationCallback m_callback = null; private static final Object m_lock = new Object(); enum AndroidConnectivity { Connected, Unknown, Disconnected } private static class QtNetworkInformationCallback extends NetworkCallback { public AndroidConnectivity previousState = null; QtNetworkInformationCallback() { } @Override public void onCapabilitiesChanged(Network network, NetworkCapabilities capabilities) { AndroidConnectivity s; if (!capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) s = AndroidConnectivity.Disconnected; else if (capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) s = AndroidConnectivity.Connected; else s = AndroidConnectivity.Unknown; // = we _may_ have Internet access setState(s); final boolean captive = capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL); behindCaptivePortalChanged(captive); } private void setState(AndroidConnectivity s) { if (previousState != s) { previousState = s; connectivityChanged(); } } @Override public void onLost(Network network) { setState(AndroidConnectivity.Disconnected); } } private QtAndroidNetworkInformation() { } public static AndroidConnectivity state() { if (m_callback != null && m_callback.previousState != null) return m_callback.previousState; return AndroidConnectivity.Unknown; } public static void registerReceiver(final Context context) { synchronized (m_lock) { if (m_callback == null) { ConnectivityManager manager = getConnectivityManager(context); m_callback = new QtNetworkInformationCallback(); NetworkRequest.Builder builder = new NetworkRequest.Builder(); builder = builder.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.P) builder = builder.addCapability(NetworkCapabilities.NET_CAPABILITY_FOREGROUND); NetworkRequest request = builder.build(); manager.registerNetworkCallback(request, m_callback); } } } public static void unregisterReceiver(final Context context) { synchronized (m_lock) { if (m_callback != null) { getConnectivityManager(context).unregisterNetworkCallback(m_callback); m_callback = null; } } } public static ConnectivityManager getConnectivityManager(final Context context) { return (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); } }