Any way to link to the Android notification settings for my app?

The following will work in Android 5.0 (Lollipop) and above:

Intent intent = new Intent();intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");//for Android 5-7intent.putExtra("app_package", getPackageName());intent.putExtra("app_uid", getApplicationInfo().uid);// for Android 8 and aboveintent.putExtra("android.provider.extra.APP_PACKAGE", getPackageName());startActivity(intent);

Notes: This is not officially supported in Android 5-7, but it works just fine. It IS officially supported as of Android 8. This code is not backwards compatible with versions of Android before 5.0.

I merged the solution of Sergei and Shhp to support all the cases :

    Intent intent = new Intent();    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {        intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);        intent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){        intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");        intent.putExtra("app_package", context.getPackageName());        intent.putExtra("app_uid", context.getApplicationInfo().uid);    } else {        intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);        intent.addCategory(Intent.CATEGORY_DEFAULT);        intent.setData(Uri.parse("package:" + context.getPackageName()));    }    context.startActivity(intent);

I've appended Channel Notification Settings for Android 8.0 Oreo API 26 or later. There is a solution from Android 4.4, KitKat.

Usage for Channel notification settings:

// PRIMARY_CHANNEL:goToNotificationSettings(getString(R.string.PRIMARY_CHANNEL), mContext);// SECONDARY_CHANNEL:goToNotificationSettings(getString(R.string.SECONDARY_CHANNEL), mContext);

Usage for App notification settings:

goToNotificationSettings(null, mContext);

The method of goToNotificationSettings:

public void goToNotificationSettings(String channel, Context context) {    Intent intent = new Intent();    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {        intent.addFlags(android.content.Intent.FLAG_ACTIVITY_NEW_TASK);        if (channel != null) {            intent.setAction(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS);            intent.putExtra(Settings.EXTRA_CHANNEL_ID, channel);        } else {            intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);        }        intent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {        if (channel != null) {            intent.setAction(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS);            intent.putExtra(Settings.EXTRA_CHANNEL_ID, channel);        } else {            intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);        }        intent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());    } else if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1) {        intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);        intent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());    } else if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){        intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);        intent.putExtra("app_package", context.getPackageName());        intent.putExtra("app_uid", context.getApplicationInfo().uid);    } else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {        intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);        intent.addCategory(Intent.CATEGORY_DEFAULT);        intent.setData(Uri.parse("package:" + context.getPackageName()));    }    context.startActivity(intent);}