Don’t
android:srcCompat="https://stackoverflow.com/questions/35645148/@drawable/wallpaper"
Do
app:srcCompat="https://stackoverflow.com/questions/35645148/@drawable/wallpaper"
as it srcCompat attribute is actually defined within AppCompat library.
Important you will need to add appropriate namespace for this.
xmlns:app=”http://schemas.android.com/apk/res-auto”
Important
what you are getting it seems like it is just a lint error that can be
ignored. I have tried and have the same error, but it is working
correctly.
you can use tools:ignore="MissingPrefix" to avoid seeing this error temporarily.