用于Activity管理和应用程序退出

一、工具类

public class AppManager {

    private static Stack<Activity> activityStack;

    private static AppManager instance;

    private AppManager(){}

    /**

     * 单一实例

     */

    public static AppManager getAppManager(){

        if(instance==null){

            instance=new AppManager();

        }

        return instance;

    }

    /**

     * 添加Activity到堆栈

     */

    public void addActivity(Activity activity){

        if(activityStack==null){

            activityStack=new Stack<Activity>();

        }

        activityStack.add(activity);

    }

    /**

     * 获取当前Activity（堆栈中最后一个压入的）

     */

    public Activity currentActivity(){

        Activity activity=activityStack.lastElement();

        return activity;

    }

    /**

     * 结束当前Activity（堆栈中最后一个压入的）

     */

    public void finishActivity(){

        Activity activity=activityStack.lastElement();

        finishActivity(activity);

    }

    /**

     * 结束指定的Activity

     */

    public void finishActivity(Activity activity){

        if(activity!=null){

            activityStack.remove(activity);

            activity.finish();

            activity=null;

        }

    }

    /**

     * 结束指定类名的Activity

     */

    public void finishActivity(Class<?> cls){

        for (Activity activity : activityStack)
{

            if(activity.getClass().equals(cls) ){

                finishActivity(activity);

            }

        }

    }

    /**

     * 结束所有Activity

     */

    public void finishAllActivity(){

        for (int i
= 0, size = activityStack.size();
i < size; i++){

            if (null != activityStack.get(i)){

                activityStack.get(i).finish();

            }

        }

        activityStack.clear();

    }

    /**

     * 退出应用程序

     */

    public void AppExit(Context context) {

        try {

            finishAllActivity();

            ActivityManager activityMgr= (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);

            activityMgr.restartPackage(context.getPackageName());

            System.exit(0);

        } catch (Exc
9803
eption e) { }

    }

二、使用

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    // TODO: add setContentView(...)
invocation

    ButterKnife.bind(this);

    AppManager.getAppManager().addActivity(this);

}

@Override
protected void onDestroy() {

    super.onDestroy();

    AppManager.getAppManager().finishActivity(this);