AppManager.java

/*
 * Copyright (c) 2014, 青岛司通科技有限公司 All rights reserved.
 * File Name：AppManager.java
 * Version：V1.0
 * Author：zhaokaiqiang
 * Date：2014-8-6
 */
package com.pan.simplepicture.utils;

import android.app.Activity;
import android.content.Context;

import java.util.Stack;

/**
 * @author panjichang
 *         应用程序Activity管理类：用于Activity管理和应用程序退出
 * @date 2014-8-6 下午6:04:25
 */
public class AppManager {

	private static Stack<Activity> activityStack;
	private static AppManager instance;

	private AppManager() {
	}

	public static AppManager getAppManager() {
		if (instance == null) {
			instance = new AppManager();
		}
		return instance;
	}

	public void addActivity(Activity activity) {
		if (activityStack == null) {
			activityStack = new Stack<Activity>();
		}
		activityStack.add(activity);
	}

	public Activity currentActivity() {
		Activity activity = activityStack.lastElement();
		return activity;
	}

	public void finishActivity() {
		Activity activity = activityStack.lastElement();
		finishActivity(activity);
	}

	public void finishActivity(Activity activity) {
		if (activity != null) {
			activityStack.remove(activity);
			activity.finish();
			activity = null;
		}
	}

	public void finishActivity(Class<?> cls) {
		for (Activity activity : activityStack) {
			if (activity.getClass().equals(cls)) {
				finishActivity(activity);
			}
		}
	}

	public void finishAllActivityAndExit(Context context) {
		if (null != activityStack) {
			for (int i = 0, size = activityStack.size(); i < size; i++) {
				if (null != activityStack.get(i)) {
					activityStack.get(i).finish();
				}
			}
			activityStack.clear();
		}
	}

}