如何检查我的应用程序是否允许显示通知

问题描述 投票:0回答:8

在 Android 设置中,如果用户不想,可以关闭通知。那么有没有像

isNotificationAllowed()
这样的方法来检查我的应用程序是否允许显示通知?以及如何打开android设置页面来引导我的用户打开通知?

android notifications android-notifications
8个回答
99
投票

编辑-新答案:

Google 似乎添加了正确的 API 调用:

NotificationManagerCompat.from(context).areNotificationsEnabled()


旧答案:

对于正在查看此问题的任何人,请注意 NotificationListenerService 不同于“显示通知”。 这两个是不同的东西!如果应用程序有权访问

NotificationListenerService
并不意味着会显示其通知,反之亦然。为了检查用户是否阻止了来自您应用的通知,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


57
投票
NotificationManagerCompat.from(context).areNotificationsEnabled()

似乎是一条路要走。


10
投票

这里是这个问题更完整的答案

fun areNotificationsEnabled(context: Context, channelId: String = "fcm_fallback_notification_channel"): Boolean {
    // check if global notification switch is ON or OFF
    if (NotificationManagerCompat.from(context).areNotificationsEnabled())
        // if its ON then we need to check for individual channels in OREO
        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val manager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
            val channel = manager.getNotificationChannel(channelId)
            return channel?.importance != NotificationManager.IMPORTANCE_NONE
        } else {
            // if this less then OREO it means that notifications are enabled
            true
        }
    // if this is less then OREO it means that notifications are disabled
    return false
}


0
投票
if(NotificationManagerCompat.from(context).areNotificationsEnabled())
{
 //Do your Work
}
else
{
     //Ask for permission
}

0
投票
public class MainActivity extends AppCompatActivity {

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);

//Main Code Below-
//NotificationManagerCompat.from(context).areNotificationsEnabled()
       if(NotificationManagerCompat.from(this).areNotificationsEnabled())
       {
           Toast.makeText(this, "Notification is on for this Application", Toast.LENGTH_SHORT).show();
       }
       else
       {
           Toast.makeText(this, "Notification is off for this Application", Toast.LENGTH_SHORT).show();
       }
   }

}

0
投票

2023-03-18:Android 13(SDK 33 TIRAMISU)引入了一个新的运行时权限(android.permission.POST_NOTIFICATIONS),用于应用发布通知(在 Android 13 之前默认允许)。

如果您应用的目标SDK低于33并且运行在Android 13设备上,用户第一次打开您的应用系统会自动请求此权限,然后由用户决定您的应用是否允许发布通知。

如果您的应用程序针对 SDK 33 和正在运行的 Android 13 设备,则默认情况下不允许 发布通知,直到您明确请求并且用户允许为止。

注意,用户可能允许你的应用发布通知,但同时禁用了特定的通知渠道,因此仅测试是否授予权限是不够的,还需要测试通知渠道是否启用。

下面是一个示例辅助函数(在 Kotlin 中),用于检查是否允许通知:

fun isPermissionGranted(context: Context, permission: String): Boolean =
    ActivityCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED

fun isNotificationAllowed(context: Context, channelId: String? = null): Boolean {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
        if (!isPermissionGranted(Manifest.permission.POST_NOTIFICATIONS)) return false
    }
    if (!NotificationManagerCompat.from(context).areNotificationsEnabled()) return false

    if (channelId == null) return true
    runCatching {
        val mgr = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        val channel = mgr.getNotificationChannel(channelId)
        return channel.importance != NotificationManager.IMPORTANCE_NONE
    }
    return false
}

-1
投票

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);
}
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