просто добавьте векторный путь в string.xml.
<string name="circle">
M527.023,71.8233 C780.213,71.8233,985.464,277.075,985.464,530.265
C985.464,783.455,780.213,988.707,527.023,988.707
C273.832,988.707,68.5809,783.455,68.5809,530.265
C68.5809,277.075,273.832,71.8233,527.023,71.8233 Z
его работа. ![check image](https://i.stack.imgur.com/8w4sE.png)