安卓开发一般都需要进行Activity的管理，常用操作老司机已为你封装完毕，经常有小伙伴问怎么进行管理，那我告诉你，你可以用这份工具进行管理，具体可以查看源码，现在为你开车，Demo传送门。

站点

管理和回收Activity → AppDavikActivityMgr

getScreenManager      : 单例堆栈集合对象
removeActivity        : 堆栈中销毁并移除
removeAllActivity     : 栈中销毁并移除所有Act对象
currentActivity       : 取当前Act对象
getCurrentActivityName: 获得当前Act的类名
addActivity           : 将Act纳入推栈集合中
exitApp               : 退出栈中所有Activity

具体路线

public class AppDavikActivityMgr {

//存储ActivityStack
private static Stack<Activity> activityStack = new Stack<Activity>();

//单例模式
private static AppDavikActivityMgr instance;


/**
 * 单列堆栈集合对象
 * @return AppDavikActivityMgr 单利堆栈集合对象
 */
public static AppDavikActivityMgr getScreenManager() {
    if (instance == null) {
        synchronized (AppDavikActivityMgr.class){
            if (instance == null) {
                instance = new AppDavikActivityMgr();
            }
        }
    }
    return instance;
}


/**
 * 堆栈中销毁并移除
 * @param activity 指定Act对象
 */
public void removeActivity(Activity activity) {
    AppLogMessageMgr.i("AppDavikActivityMgr-->>removeActivity", activity != null ? activity.toString() : "");
    if (null != activity) {
        activityStack.remove(activity);
        activity.finish();
        activity = null;
    }
}



/**
 * 栈中销毁并移除所有Act对象
 */
public void removeAllActivity() {
    if (null != activityStack && activityStack.size() > 0) {
            //创建临时集合对象
            Stack<Activity> activityTemp = new Stack<Activity>();
            for (Activity activity : activityStack) {
                if (null != activity) {
                    //添加到临时集合中
                    activityTemp.add(activity);
                    //结束Activity
                    activity.finish();
                }
            }
            activityStack.removeAll(activityTemp);
    }
    AppLogMessageMgr.i("AppDavikActivityMgr-->>removeAllActivity", "removeAllActivity");
    System.gc();
    System.exit(0);
}


/**
 * 获取当前Act对象
 * @return Activity 当前act
 */
public Activity currentActivity() {
    Activity activity = null;
    if (!activityStack.empty()){
        activity = activityStack.lastElement();
    }
    AppLogMessageMgr.i("AppDavikActivityMgr-->>currentActivity", activity + "");
    return activity;
}


/**
 * 获得当前Act的类名
 * @return String
 */
public String getCurrentActivityName() {
    String actSimpleName = "";
    if (!activityStack.empty()) {
        actSimpleName = activityStack.lastElement().getClass().getSimpleName();
    }
    AppLogMessageMgr.i("AppDavikActivityMgr-->>getCurrentActivityName", actSimpleName);
    return actSimpleName;
}


/**
 * 将Act纳入推栈集合中
 * @param activity Act对象
 */
public void addActivity(Activity activity) {
    AppLogMessageMgr.i("AppDavikActivityMgr-->>addActivity",  activity != null ? activity.toString() : "");
    if (null == activityStack) {
        activityStack = new Stack<Activity>();
    }
    activityStack.add(activity);
}



/**
 * 退出栈中所有Activity
 * @param cls
 * @return void
 */
public void exitApp(Class<?> cls) {
    AppLogMessageMgr.i("AppDavikActivityMgr-->>exitApp", "exitApp-->>占用内存：" + Runtime.getRuntime().totalMemory());
    while (true) {
        Activity activity = currentActivity();
        if (null == activity) {
            break;
        }
        if (activity.getClass().equals(cls)) {
            break;
        }
        removeActivity(activity);
    }
    System.gc();
    System.exit(0);
}

}

终点站

好了，终点站到了，如果对本次旅途满意的话，请给五星好评哦，没关注的小伙伴轻轻点个上方的关注，毕竟老司机牺牲了很多时间才换来这么一份工具类，如果该工具类依赖其他工具类，都可以在我的史上最全的常用开发工具类收集(持续更新中)中找到。