Java tutorial
/* * Copyright (C) 2017 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.contacts.util; import android.annotation.TargetApi; import android.app.NotificationChannel; import android.app.NotificationManager; import android.content.Context; import android.os.Build; import android.support.v4.os.BuildCompat; import com.android.contacts.R; @TargetApi(Build.VERSION_CODES.O) public class ContactsNotificationChannelsUtil { public static String DEFAULT_CHANNEL = "DEFAULT_CHANNEL"; private ContactsNotificationChannelsUtil() { } public static void createDefaultChannel(Context context) { if (!BuildCompat.isAtLeastO()) { return; } final NotificationManager nm = context.getSystemService(NotificationManager.class); final NotificationChannel channel = new NotificationChannel(DEFAULT_CHANNEL, context.getString(R.string.contacts_default_notification_channel), NotificationManager.IMPORTANCE_LOW); nm.createNotificationChannel(channel); } }