问题
Is there a way to programatically get all the android system wallpapers?
I know how to get the current one, via WallpaperManager, and then save it to disk. But I want to know if there is a way to access all the pictures that act as system wallpaper included with the O.S.
回答1:
All the wallpapers are located in the launcher app. As the name of the launcher and its resources may vary accross devices, there is no way to create a reliable way to do this.
On stock Android the wallpapers are located in Launcher2.apk:res/drawable-somedpi. On my devices they were in the drawable-hdpi folder, but this may be different on others.
First get the resources of the launcher (com.android.Launcher2.apk) as described in this answer.
Then you can list the resources, using a method similar to the one in this question.
I haven't tried out all this myself, so it might not work as expected.
回答2:
Just figure out where they are saved and access them that way.
来源：https://stackoverflow.com/questions/10566975/getting-all-system-wallpapers