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This is an example of Background Wallpaper change like what'sapp Chat using simple blocks and shared preference.

It is very easy to implement

Please follow me on insta for more :- https://www.instagram.com/pixanime_?igsh=MXV6NXB3d3NqajE1dg==

please give me credit if you use this 🙏🏻

Thanks ☺️