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/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
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**
******************************************************************************/
package org.qtproject.qt.android.networkinformation;
import android.annotation.SuppressLint;
import android.content.Context;
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;
}
@SuppressLint("MissingPermission")
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);
}
}
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