course_pre.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="25dp"
    android:height="25dp"
    android:viewportWidth="25"
    android:viewportHeight="25">
  <path
      android:pathData="M0.5,0.5h24v24h-24z"
      android:strokeAlpha="0"
      android:strokeWidth="1"
      android:fillColor="#D8D8D8"
      android:fillType="evenOdd"
      android:strokeColor="#00000000"
      android:fillAlpha="0"/>
  <path
      android:pathData="M5.5,5.5L5.5,19.5"
      android:strokeWidth="1.5"
      android:fillColor="#00000000"
      android:strokeColor="#ffffff"
      android:fillType="evenOdd"
      android:strokeLineCap="round"/>
  <path
      android:pathData="M8.0156,12.109C7.9155,12.676 8.0318,13.2813 8.3881,13.7903C8.5387,14.0055 8.7259,14.1926 8.9411,14.3433L8.9411,14.3433L17.2832,20.1827C17.566,20.3807 17.9022,20.4453 18.2172,20.3897C18.5323,20.3341 18.8261,20.1583 19.024,19.8755C19.1711,19.6654 19.25,19.4152 19.25,19.1587L19.25,19.1587L19.25,5.8413C19.25,5.4961 19.1101,5.1836 18.8839,4.9574C18.6577,4.7312 18.3452,4.5913 18,4.5913C17.7435,4.5913 17.4933,4.6702 17.2832,4.8173L17.2832,4.8173L8.9411,10.6567C8.4321,11.013 8.1157,11.5419 8.0156,12.109Z"
      android:strokeWidth="1.5"
      android:fillColor="#00000000"
      android:strokeColor="#ffffff"
      android:fillType="evenOdd"/>
</vector>