/*
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* Copyright (c) 2010-2019 Belledonne Communications SARL.
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*
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* This file is part of linphone-android
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* (see https://www.linphone.org).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.linphone.service;
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import android.app.Activity;
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import android.app.Application;
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import android.os.Bundle;
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import java.util.ArrayList;
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import org.linphone.LinphoneManager;
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import org.linphone.core.tools.Log;
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import org.linphone.utils.LinphoneUtils;
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/**
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* Believe me or not, but knowing the application visibility state on Android is a nightmare. After
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* two days of hard work I ended with the following class, that does the job more or less reliabily.
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*/
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public class ActivityMonitor implements Application.ActivityLifecycleCallbacks {
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private final ArrayList<Activity> activities = new ArrayList<>();
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private boolean mActive = false;
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private int mRunningActivities = 0;
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private InactivityChecker mLastChecker;
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@Override
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public synchronized void onActivityCreated(Activity activity, Bundle savedInstanceState) {
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Log.i("[Activity Monitor] Activity created:" + activity);
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if (!activities.contains(activity)) activities.add(activity);
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}
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@Override
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public void onActivityStarted(Activity activity) {
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Log.i("Activity started:" + activity);
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}
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@Override
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public synchronized void onActivityResumed(Activity activity) {
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Log.i("[Activity Monitor] Activity resumed:" + activity);
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if (activities.contains(activity)) {
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mRunningActivities++;
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Log.i("[Activity Monitor] runningActivities=" + mRunningActivities);
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checkActivity();
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}
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}
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@Override
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public synchronized void onActivityPaused(Activity activity) {
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Log.i("[Activity Monitor] Activity paused:" + activity);
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if (activities.contains(activity)) {
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mRunningActivities--;
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Log.i("[Activity Monitor] runningActivities=" + mRunningActivities);
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checkActivity();
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}
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}
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@Override
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public void onActivityStopped(Activity activity) {
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Log.i("[Activity Monitor] Activity stopped:" + activity);
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}
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@Override
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public void onActivitySaveInstanceState(Activity activity, Bundle outState) {}
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@Override
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public synchronized void onActivityDestroyed(Activity activity) {
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Log.i("[Activity Monitor] Activity destroyed:" + activity);
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activities.remove(activity);
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}
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void startInactivityChecker() {
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if (mLastChecker != null) mLastChecker.cancel();
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LinphoneUtils.dispatchOnUIThreadAfter((mLastChecker = new InactivityChecker()), 2000);
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}
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void checkActivity() {
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if (mRunningActivities == 0) {
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if (mActive) startInactivityChecker();
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} else if (mRunningActivities > 0) {
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if (!mActive) {
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mActive = true;
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onForegroundMode();
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}
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if (mLastChecker != null) {
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mLastChecker.cancel();
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mLastChecker = null;
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}
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}
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}
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private void onBackgroundMode() {
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Log.i("[Activity Monitor] App has entered background mode");
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if (LinphoneManager.getCore() != null) {
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LinphoneManager.getCore().enterBackground();
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}
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}
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private void onForegroundMode() {
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Log.i("[Activity Monitor] App has left background mode");
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if (LinphoneManager.getCore() != null) {
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LinphoneManager.getCore().enterForeground();
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}
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}
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class InactivityChecker implements Runnable {
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private boolean isCanceled;
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void cancel() {
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isCanceled = true;
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}
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@Override
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public void run() {
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if (LinphoneService.isReady()) {
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synchronized (LinphoneService.instance()) {
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if (!isCanceled) {
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if (ActivityMonitor.this.mRunningActivities == 0 && mActive) {
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mActive = false;
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onBackgroundMode();
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}
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}
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}
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}
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}
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}
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}
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