检查是否为特定包启用通知 [英] checking if notifications are enabled for specific package

问题描述

我正在开发一个系统应用程序，我需要从我的应用程序中检查某个包是否启用了通知.

I'm developing a system application and I need to check from my application if a certain package has notifications enabled or not.

我一直在尝试这个代码:

I've been triying this code:

public static boolean isNotificationEnabled(Context context) {

    AppOpsManager mAppOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);

    ApplicationInfo appInfo = context.getApplicationInfo();

    String pkg = context.getApplicationContext().getPackageName();

    int uid = appInfo.uid;

    Class appOpsClass = null; /* Context.APP_OPS_MANAGER */

    try {

        appOpsClass = Class.forName(AppOpsManager.class.getName());

        Method checkOpNoThrowMethod = appOpsClass.getMethod(CHECK_OP_NO_THROW, Integer.TYPE, Integer.TYPE, String.class);

        Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);
        int value = (int)opPostNotificationValue.get(Integer.class);

        return ((int)checkOpNoThrowMethod.invoke(mAppOps,value, uid, pkg) == AppOpsManager.MODE_ALLOWED);

    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (NoSuchMethodException e) {
        e.printStackTrace();
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (InvocationTargetException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }

    return false;
}

问题是它一直在返回 true.我做错了什么?

The issue is that it is returning true all the time. What am I doing wrong?

推荐答案

如果您的方法获取目标应用程序的Context(您要检查是否启用通知).

If your method gets Context of the target application (which you want to check if notifications enabled).

您可以基于此 Context 创建 NotificationManagerCompat 实例并检查是否为该应用程序启用了通知:

You can create NotificationManagerCompat instance based on this Context and check if notifications are enabled for that application:

public static boolean isNotificationEnabled(Context context) {
    return NotificationManagerCompat.from(context.getApplicationContext())
            .areNotificationsEnabled();
}

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