android - how to add scroll button on list view? -

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i have seen 1 think in android list view there 1 small button on right side scrolling list. astro provide right side button scrolling list , visible while scrolling list , invisible when ideal.

i dont have idea how done this. m thinking there 1 property enable this.

please provide ans if use that.

thanks in advance!

i find ans can enable bye following propery og listview in xml

android:fastscrollenabled="true"


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