Activity优化几个结束的方法

  1 package com.itau.jingdong;
  2 
  3 import java.util.Stack;
  4 import android.app.Activity;
  5 import android.app.ActivityManager;
  6 import android.content.Context;
  7 
  8 /**
  9  * @author Tau.Chen 陈涛
 10  *
 11  * @email tauchen1990@gmail.com,1076559197@qq.com
 12  *
 13  * @date 2013年9月12日
 14  *
 15  * @version V_1.0.0
 16  *
 17  * @description 应用程序Activity的管理类
 18  *
 19  */
 20 public class AppManager {
 21     private static Stack<Activity> mActivityStack;
 22     private static AppManager mAppManager;
 23 
 24     private AppManager() {
 25     }
 26 
 27     /**
 28      * 单一实例
 29      */
 30     public static AppManager getInstance() {
 31         if (mAppManager == null) {
 32             mAppManager = new AppManager();
 33         }
 34         return mAppManager;
 35     }
 36 
 37     /**
 38      * 添加Activity到堆栈
 39      */
 40     public void addActivity(Activity activity) {
 41         if (mActivityStack == null) {
 42             mActivityStack = new Stack<Activity>();
 43         }
 44         mActivityStack.add(activity);
 45     }
 46 
 47     /**
 48      * 获取栈顶Activity（堆栈中最后一个压入的）
 49      */
 50     public Activity getTopActivity() {
 51         Activity activity = mActivityStack.lastElement();
 52         return activity;
 53     }
 54 
 55     /**
 56      * 结束栈顶Activity（堆栈中最后一个压入的）
 57      */
 58     public void killTopActivity() {
 59         Activity activity = mActivityStack.lastElement();
 60         killActivity(activity);
 61     }
 62 
 63     /**
 64      * 结束指定的Activity
 65      */
 66     public void killActivity(Activity activity) {
 67         if (activity != null) {
 68             mActivityStack.remove(activity);
 69             activity.finish();
 70             activity = null;
 71         }
 72     }
 73 
 74     /**
 75      * 结束指定类名的Activity
 76      */
 77     public void killActivity(Class<?> cls) {
 78         for (Activity activity : mActivityStack) {
 79             if (activity.getClass().equals(cls)) {
 80                 killActivity(activity);
 81             }
 82         }
 83     }
 84 
 85     /**
 86      * 结束所有Activity
 87      */
 88     public void killAllActivity() {
 89         for (int i = 0, size = mActivityStack.size(); i < size; i++) {
 90             if (null != mActivityStack.get(i)) {
 91                 mActivityStack.get(i).finish();
 92             }
 93         }
 94         mActivityStack.clear();
 95     }
 96 
 97     /**
 98      * 退出应用程序
 99      */
100     public void AppExit(Context context) {
101         try {
102             killAllActivity();
103             ActivityManager activityMgr = (ActivityManager) context
104                     .getSystemService(Context.ACTIVITY_SERVICE);
105             activityMgr.restartPackage(context.getPackageName());
106             System.exit(0);
107         } catch (Exception e) {
108         }
109     }
110 }