抚慰 :scroll:描述 使用第三个撰写挑战设计的样机应用程序 :camera_with_flash:屏幕截图 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, software distributed under the License i