想寫一個google map的程式練習
建立新專案後再MainActivity.java中R出現了紅字，下方的錯誤訊息顯示

> Error:Failed to crunch file C:\Users\scan\Downloads\AndroidClassroomTraining-master\Projects\Maps\Apptest2\app\build\intermediates\exploded-aar\com.google.android.gms\play-services-cast-framework\10.0.1\res\drawable-mdpi-v4\quantum_ic_pause_circle_filled_grey600_36.png into C:\Users\scan\Downloads\AndroidClassroomTraining-master\Projects\Maps\Apptest2\app\build\intermediates\res\merged\debug\drawable-mdpi-v4\quantum_ic_pause_circle_filled_grey600_36.png

和

**> Error:Execution failed for task ':app:mergeDebugResources'.

Error: Failed to crunch file C:\Users\scan\Downloads\AndroidClassroomTraining-master\Projects\Maps\Apptest2\app\build\intermediates\exploded-aar\com.google.android.gms\play-services-cast-framework\10.0.1\res\drawable-mdpi-v4\quantum_ic_pause_circle_filled_grey600_36.png into C:\Users\scan\Downloads\AndroidClassroomTraining-master\Projects\Maps\Apptest2\app\build\intermediates\res\merged\debug\drawable-mdpi-v4\quantum_ic_pause_circle_filled_grey600_36.png**

透過路徑我查詢了圖片是一張暫停(一般影片撥放的那種)的符號，我試過了Rebulid和Clear都無效，麻煩請各位大大協助了！