1 /* 2 * Copyright 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.receivecontent; 18 19 import android.os.Handler; 20 import android.os.Looper; 21 import android.util.Log; 22 23 import androidx.annotation.NonNull; 24 25 import com.google.common.util.concurrent.ListeningScheduledExecutorService; 26 import com.google.common.util.concurrent.MoreExecutors; 27 28 import java.util.concurrent.Executor; 29 import java.util.concurrent.Executors; 30 31 final class MyExecutors { MyExecutors()32 private MyExecutors() {} 33 34 private static final ListeningScheduledExecutorService BG = 35 MoreExecutors.listeningDecorator(Executors.newSingleThreadScheduledExecutor()); 36 37 private static final Handler MAIN_HANDLER = new Handler(Looper.getMainLooper()); 38 private static final Executor MAIN_EXECUTOR = 39 runnable -> { 40 if (!MAIN_HANDLER.post(runnable)) { 41 Log.e(Logcat.TAG, "Failed to post runnable on main thread"); 42 } 43 }; 44 45 @NonNull bg()46 public static ListeningScheduledExecutorService bg() { 47 return BG; 48 } 49 50 @NonNull main()51 public static Executor main() { 52 return MAIN_EXECUTOR; 53 } 54 } 55