如何检查我的应用是否被允许显示通知

Question

在Android设置中，用户可以关闭通知，如果他们不想。那么有没有像isNotificationAllowed()检查的任何方法是我的应用程序被允许显示通知？以及如何打开android设置页面来指导我的用户打开通知？

Answer 1

编辑 - 新建答案：

好像谷歌加入适当的API调用： NotificationManagerCompat.from(context).areNotificationsEnabled()

---

OLD答：

的人谁看这个问题，注意NotificationListenerService从“显示通知不同”。 这两个是不同的东西！如果某个应用有权访问NotificationListenerService，则表示不会显示其通知，反之亦然。为了检查用户是否已经从您的应用程序或不阻止通知，您可以使用反射：

public class NotificationsUtils { 

private static final String CHECK_OP_NO_THROW = "checkOpNoThrow"; 
private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION"; 

public static boolean isNotificationEnabled() { 

    AppOpsManager mAppOps = (AppOpsManager) GlobalContext.getContext().getSystemService(Context.APP_OPS_SERVICE); 

    ApplicationInfo appInfo = GlobalContext.getContext().getApplicationInfo(); 

    String pkg = GlobalContext.getContext().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; 
} 
} 

来源：https://code.google.com/p/android/issues/detail?id=38482

Answer 2

试试这个：

Is there a way an app can check if it is allowed to access notifications?

而且这里有一个多一点的解释：

Check for access to notifications using NotificationListenerService

Answer 3

试试这个：

if (Settings.Secure.getString(getActivity().getContentResolver(), "enabled_notification_listeners").contains(getActivity().getPackageName())) { 
    // Notification access service already enabled 
    Toast.makeText(getActivity(),"notification enabled",Toast.LENGTH_LONG).show(); 
} else { 
    Intent intent = new Intent(); 
    intent.setClassName("com.android.settings", "com.android.settings.Settings$AppNotificationSettingsActivity"); 
    intent.putExtra("app_package", getPackageName()); 
    intent.putExtra("app_uid", getApplicationInfo().uid); 
    startActivity(intent); 
} 

Answer 4

NotificationManagerCompat.from(context).areNotificationsEnabled() 

似乎是很长的路要走。