countdown timer 源码

滴答声 描述 一个使用jetpack compose ui和kotlin创建的简单的倒计时应用程序 屏幕截图 开始画面 数数时 开启暗模式 执照 Copyright 2020 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 https://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, soft