Writing skills of Android view background selector

There are 10 in the layout above Check@R_ 836_ 2419 @, and then set Check@R_ 836_ 2419 @ background picture bit, background selector, and font color selector.

Bordered underlined background selector code:

Font selector code:

Border background selector rendering:

Implementation code of border background selector:

--Effect drawing of underline background selector without border:

Implementation code of underline background selector without border:

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