ActivityMonitor.java

/*
 * VoIP.ms SMS
 * Copyright (C) 2015-2016 Michael Kourlas
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.kourlas.voipms_sms.activities;

import android.app.Activity;

public class ActivityMonitor {
    private static ActivityMonitor instance = null;
    private Activity currentActivity;

    private ActivityMonitor() {
        currentActivity = null;
    }

    public static ActivityMonitor getInstance() {
        if (instance == null) {
            instance = new ActivityMonitor();
        }
        return instance;
    }

    public Activity getCurrentActivity() {
        return currentActivity;
    }

    void setCurrentActivity(Activity currentActivity) {
        this.currentActivity = currentActivity;
    }

    void deleteReferenceToActivity(Activity activity) {
        if (activity.equals(currentActivity)) {
            currentActivity = null;
        }
    }
}