迁移到androidx后，DrawableTop没有显示

Question

I have a button with text and icon drawable positioned at the top but after migrating to androidx the icon doesn't show on the text does.

<Button
  android:id="@+id/activity_advanced_seats_btn_reserved_key"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center"
  android:drawableTop="@drawable/icon_seat_reserved_key"
  android:layout_margin="10dp"
  android:background="@android:color/transparent"
  android:text="Reserved"
  android:textColor="@android:color/white"
  android:textAllCaps="false"
  android:textStyle="bold"
  android:textSize="12sp"
  android:gravity="center_horizontal"
  android:enabled="false" />

Answer 1

事实证明它确实有效但我看不到图像，在图标最终显示之前必须删除按钮上的默认色调：

app:iconTint="@null"