Android viewpager infinite loop to realize dynamic sliding of small circle points at the bottom

Drag the page to the last page, then slide down to return to the first page, and the first page slides forward to return to the last page

At the same time, the small red dot at the bottom changes its position at any time with the proportion of the sliding distance of the page

Layout:

Where red_ Circle is a small red dot drawn with shape

The final LinearLayout is actually a container of small gray dots, and the number is dynamically determined in the code according to the length of the data

code:

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