How do I change the default wallpaper on my custom rom

Question

I am trying to create my own custom rom, and I want to change the default wallpaper. How can I change the default wallpaper on custom rom's. To be more exact, where are default wallpapers generically located in the source code of various rom's.

Answer 1

For most custom roms it can be found in:

vendor/{SOME_CUSTOM_VENDOR_NAME}/overlay/common/frameworks/base/core/res/res/drawable-nodpi/default_wallpaper.png

e.g. LineageOS:

vendor/lineage/overlay/common/frameworks/base/core/res/res/drawable-nodpi/default_wallpaper.png

e.g. HavocOS:

vendor/havoc/overlay/common/frameworks/base/core/res/res/drawable-nodpi/default_wallpaper.png

For plain AOSP it is:

frameworks/base/core/res/res/drawable-nodpi/default_wallpaper.png

And it can also be in a Device Tree Overlay as well.

Answer 2

The default wallpaper is usually found in

frameworks/base/core/res/res/drawable-nodpi/default_wallpaper.png

But it can be overwritten by OEM overlays found in device/vendor.