I cant see the preview of the arc

I cant see the preview of the arc when the app is pushed to device.
I can see the preview in the android studio but while run time it shows nothing to me

Im not sure if i have added everything that is need ,
I just added the library through gradel and copied the xml part and tried to run but it shows nothing...

先檢查 Gradle 程式庫相依性和複製的 XML 版面配置，然後將 Android Studio 預覽與裝置上執行的應用程式進行比較。確認弧線會在執行時期進行轉譯；此 issue 未指定特定的檔案、測試、記錄或可重現的範例。

由索引模型根據 Issue 內容生成。