public class AppManager {

public Stack
    
      mStack;public ArrayList
     
       mActivities;public static AppManager mInstance;public static AppManager getInstance(){    if( mInstance==null ) {        mInstance = new AppManager();    }    return mInstance;}/** * 添加Activity到栈中 */public void addActivity(Activity activity){    if( mStack==null ){        mStack = new Stack<>();    }    mStack.add(activity);}/** * 获取当前Activity */public Activity getCurrentActivity(){    return mStack.lastElement();}/** * 结束指定的Activity */public void killSingleActivity(Activity activity){    if( activity==null ){        return;    }    mStack.remove(activity);    activity.finish();}/** * 结束指定的Activity */public void killSingleActivity(Class
       cls){    for( Activity activity : mStack ){        if( activity.getClass().equals(cls) ){            killSingleActivity(activity);        }    }}/** * 结束多个Activity */public void killMoreActivity(ArrayList
      
       > activities){    if( mActivities==null ){        mActivities = new ArrayList<>();    }    for( Class
        cls : activities ){        Activity activity = isHere(cls);        if( activity!=null ){            mActivities.add(activity);        }    }    mStack.removeAll(mActivities);    for( Activity activity : mActivities ){        activity.finish();    }    mActivities.clear();}/** * 是否在栈中 */public Activity isHere(Class
        cls){    for( Activity activity : mStack ){        if( activity.getClass().equals(cls) ){            return activity;        }    }    return null;}/** * 结束所有 */public void killAllActivity(){    for( Activity activity : mStack ){        activity.finish();    }    mStack.clear();}/** * 退出程序 */public void exitApp(){    killAllActivity();    System.exit(0);}}复制代码
      
     
    

Activity中使用：

@Overrideprotected void onCreate(Bundle savedInstanceState) {     ....    AppManager.getAppManager().addActivity(this);}复制代码

//要关闭Activity的地方调用 代替finish() AppManager.getAppManager().killActivity(this);