Error when trying to use the Cardslib library: unable to find attribute android:foregroundInsidePadding -

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when trying implement cardslib library in app, error every time try run app:

error: in foregroundlinearlayout, unable find attribute android:foregroundinsidepadding

however, upon looking through attrs.xml file library, found foregroundlinearlayout , attribute there. idea might causing this?

this issue comes requirement of upgraded build tools, referred here.

in case needed change in build.gradle from.

... compilesdkversion 23 buildtoolsversion "21.1.2" ...

to

... compilesdkversion 23 buildtoolsversion "22.0.1" ...

if using android studio , don't have latest build tools installed, prompted wizard can install automatically.


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