Android is already doing this for you. Read the paragraph before the paragraph is quoted:
Since the release of Ice Cream Sandwich, Roboto has been the standard font on Android. Since Froyo, Noto was the standard Android font for all languages ββnot covered by Roboto.
Therefore, do not change the font / font used, and everything will be fine.
Remember that this design site is designed not only for Android, but also for the Internet, Chrome os, etc., as well as for the unified / cross-platform design of Google, hence the wording.
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