如何檢查我的應用是否被允許顯示通知

Question

在Android設置中，用戶可以關閉通知，如果他們不想。那麼有沒有像isNotificationAllowed()檢查的任何方法是我的應用程序被允許顯示通知？以及如何打開android設置頁面來指導我的用戶打開通知？

Answer 1

編輯 - 新建答案：

好像谷歌加入適當的API調用： NotificationManagerCompat.from(context).areNotificationsEnabled()

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OLD答：

的人誰看這個問題，注意NotificationListenerService從「顯示通知不同」。 這兩個是不同的東西！如果某個應用有權訪問NotificationListenerService，則表示不會顯示其通知，反之亦然。爲了檢查用戶是否已經從您的應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; 
} 
} 

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

Answer 2

試試這個：

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

而且這裏有一個多一點的解釋：

Check for access to notifications using NotificationListenerService

Answer 3

試試這個：

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() 

似乎是很長的路要走。