管理和回收Activity → AppDavikActivityMgr

 package com.jingewenku.abrahamcaijin.commonutil;
 import android.app.Activity;   import java.util.Stack;   /** * 主要功能: 管理和回收Act * @Prject: CommonUtilLibrary * @Package: com.jingewenku.abrahamcaijin.commonutil * @author: AbrahamCaiJin * @date: 2017年05月03日 16:37 * @Copyright: 个人版权所有 * @Company: * @version: 1.0.0 */ 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) { instance = new AppDavikActivityMgr(); } return instance; }     /** * 堆栈中销毁并移除 * @param activity 指定Act对象 */ public void removeActivity(Activityactivity) { 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(Activityactivity) { 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); }     }