在任意界面退出当前activity，比如侧滑菜单。

private void killCurrentActivity(Context context){
    for (Activity activity : LauncherApplication.getInstance().activityList){
        if (activity.toString().contains(getRunningActivityName(context))){
            activity.finish();
        }
    }
}

private String getRunningActivityName(Context context){
    ActivityManager activityManager=(ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
    String runningActivity=activityManager.getRunningTasks(1).get(0).topActivity.getClassName();
    return runningActivity;
}

<uses-permission android:name="android.permission.GET_TASKS" />

// 单例模式中获取唯一的MyApplication实例
public static LauncherApplication getInstance() {
    if (null == instance) {
        synchronized (LauncherApplication.class){
            instance = new LauncherApplication();
        }
    }
    return instance;
}

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

主要就是获取当前activity，然后在自定义的application中把所有activity添加到集合，然后遍历判断是当前的activity就结束。