com.hellofyc.base.app.activity.ActivityStack.java Source code

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Here is the source code for com.hellofyc.base.app.activity.ActivityStack.java

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/*
 *  Copyright (C) 2012-2015 Jason Fang ( ifangyucun@gmail.com )
 *
 *  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 com.hellofyc.base.app.activity;

import android.app.Activity;
import android.support.v4.app.ActivityCompat;

import java.util.Stack;

/**
 * Activity
 * Create on 20141122 ?9:51:42
 *
 * @author Jason Fang
 */
public class ActivityStack {

    private static ActivityStack sInstance;
    private Stack<Activity> mActivityStack = new Stack<>();

    public static ActivityStack getInstance() {
        if (sInstance == null) {
            sInstance = new ActivityStack();
        }
        return sInstance;
    }

    public void add(Activity a) {
        if (a == null)
            return;
        if (!mActivityStack.contains(a)) {
            mActivityStack.add(a);
        }
    }

    public void remove(Activity a) {
        if (a == null)
            return;

        if (mActivityStack.contains(a)) {
            mActivityStack.remove(a);
        }
    }

    public void closeAllActivities() {
        if (mActivityStack.empty())
            return;

        for (Activity a : mActivityStack) {
            if (a == null || a.isFinishing())
                continue;
            ActivityCompat.finishAffinity(a);
        }
        mActivityStack.clear();
    }

}