获取用户通知设置：在App内展示通知声音状态的技术问询

Hey there! Let's solve this problem together—displaying your app's notification sound toggle status in your in-app settings and guiding users to adjust it via system settings when needed is totally achievable. Here's a step-by-step breakdown for both Android and iOS:

Android Implementation #

1. Check the Current Notification Sound Status #

Starting from Android O (API 26), notification preferences are managed via notification channels. To check if sound is enabled for your app's channel:

import android.app.NotificationManager
import android.content.Context
import android.os.Build
import android.provider.Settings

fun isNotificationSoundEnabled(context: Context, channelId: String): Boolean {
    val notificationManager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
    return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        val channel = notificationManager.getNotificationChannel(channelId)
        // Check if channel importance isn't none and sound is set
        channel?.importance != NotificationManager.IMPORTANCE_NONE && channel?.sound != null
    } else {
        // For pre-O devices, check the global notification sound setting
        Settings.System.getInt(context.contentResolver, Settings.System.NOTIFICATION_SOUND, 1) != 0
    }
}

Make sure to replace channelId with your app's actual notification channel ID.

2. Redirect Users to App-Specific System Settings #

Once you've detected the status doesn't match what the user expects, you can send them directly to your app's notification settings page:

import android.content.Intent
import android.net.Uri
import android.os.Build

fun openAppNotificationSettings(context: Context) {
    val intent = Intent().apply {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            action = Settings.ACTION_APP_NOTIFICATION_SETTINGS
            putExtra(Settings.EXTRA_APP_PACKAGE, context.packageName)
        } else {
            action = Settings.ACTION_APPLICATION_DETAILS_SETTINGS
            data = Uri.fromParts("package", context.packageName, null)
        }
        flags = Intent.FLAG_ACTIVITY_NEW_TASK
    }
    context.startActivity(intent)
}

In your in-app settings UI, display a toggle or status label (like "Notification Sound: Enabled"). If the user taps to adjust and the current state is off, trigger this function to send them to system settings.

iOS Implementation #

1. Check Notification Sound Status #

Use the UserNotifications framework to fetch the current notification settings, which includes the sound toggle state:

import UserNotifications

func checkNotificationSoundStatus(completion: @escaping (Bool) -> Void) {
    UNUserNotificationCenter.current().getNotificationSettings { settings in
        DispatchQueue.main.async {
            // soundEnabled returns true if notification sounds are allowed
            completion(settings.soundEnabled)
        }
    }
}

Note: Your app must have requested notification permissions first (using requestAuthorization) to access these settings.

2. Navigate to System Settings #

iOS doesn't let you jump directly to the notification sound toggle, but you can open your app's main settings page where users can find the notification controls:

import UIKit

func openAppNotificationSettings() {
    guard let settingsUrl = URL(string: UIApplication.openSettingsURLString) else { return }
    if UIApplication.shared.canOpenURL(settingsUrl) {
        UIApplication.shared.open(settingsUrl, options: [:], completionHandler: nil)
    }
}

In your in-app settings, show the current sound status and add a button/link like "Adjust in System Settings" to trigger this function when needed.

Bonus: Keep the Status Updated #

To ensure your in-app settings reflect real-time changes made in system settings:

• Android: Use a ContentObserver to listen for changes to notification settings.
• iOS: Implement UNUserNotificationCenterDelegate and override userNotificationCenter(_:didChange:) to refresh your UI when settings update.

内容的提问来源于stack exchange，提问作者Parthib Biswas