有没有一种方法的应用程序可以检查它是否被允许访问的通知？ [英] Is there a way an app can check if it is allowed to access notifications?

问题描述

我想实现一个NotificationListenerService以便访问投递到通知栏的所有通知。

I want to implement an NotificationListenerService to get access to all notifications that are posted to the notification bar.

据我所知，我需要能够访问该通知在设置与此调用：

I understand that I need to enable access to the Notifications in the Settings with this call:

startActivity(new Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS"));

有没有一种方法来检查，如果用户启动的通知访问我的应用程序？

Is there a way to check if the user activated Notification access for my app?

推荐答案

我设法找到一个轻微的黑客解决这个问题。如果检查 Settings.Secure 的源代码，你将看到 ENABLED_NOTIFICATION_LISTENERS 标注有 @hide 。我不知道这是否是有意还是无意。在一个相关的话题，CommonsWare不提另一个答案中，有一个的错误 preventing此设置的起点，所以我想是无意的。

I managed to find a slight hack to solve this. If you check the source of Settings.Secure, you will see that ENABLED_NOTIFICATION_LISTENERS is annotated with @hide. I don't know if this is intentional or not. On a related topic, CommonsWare does mention in another answer that there is a bug preventing the starting of this setting so I guess is unintentional.

总之，要解决这个问题，我所做的只是使用的字符串值来获取启用通知监听器的当前目录 ENABLED_NOTIFICATION_LISTENERS ：

Anyway, to work around this, all I did was to fetch the current list of enabled notification listeners using the string value of ENABLED_NOTIFICATION_LISTENERS:

String enabledListeners = Settings.Secure.getString(context.getContentResolver(), 
    "enabled_notification_listeners");

然后你只需要检查，如果你的服务是在列表中。

Then you just have to check if your service is in the list.

我不是所有的API> = 18还，但它正在开发的Andr​​oid 4.4.2进行测试。

I did not test this on all API >= 18 yet but it is working on Android 4.4.2.

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