Android完全退出的方案

继承Application，实现一个Activity的管理器容器，管理所有的Activity，在用户明确退出应用的时候，循环遍历所有的Activity，并调用其finish()。

伪代码如下：

public class MyApplication extends Application {

        private List<Activity> activityList = new LinkedList<Activity>();
        private static MyApplication instance;
        private MyApplication() {}
        public static MyApplication getInstance() {
                if ( instance == null ) {
                        instance = new MyApplication();
                }
                return instance;
        }

        // 添加Activity到容器中
        public void addActivity(Activity activity) {
                activityList.add(activity);
        }

        // 遍历所有Activity并finish
        public void exit() {
                for (Activity activity : activityList) {
                        activity.finish();
                }
                System.exit(0);
        }
}

 

Activity Manager :

public class ScreenManager {

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

    public static ScreenManager getScreenManager() {
        if (instance == null) {
            instance = new ScreenManager();
        }
        return instance;
    }
    public Activity lastActivity() {
        Activity activity = activityStack.lastElement();
        return activity;
    }
    public void popActivity(Activity activity) {
        if (activity != null) {
            activityStack.remove(activity);
            activity = null;
        }
    }
    
    public int activityCount() {
        return activityStack.size();
    }
    
    public void pushActivity(Activity activity) {
        if (activityStack == null) {
            activityStack = new Stack<Activity>();
        }
        activityStack.add(activity);
    }

    public void popAllActivityExceptOne(Class cls) {
        while (true) {
            Activity activity = lastActivity();
            if (activity == null) {
                break;
            }
            if (activity.getClass().equals(cls)) {
                break;
            }
            popActivity(activity);
        }
    }
}