I develop own library module where I use Snackbar.
Here is my Gradle file:
apply plugin: \'com.android.library\'
android {
compileSdkV
I solved the problem now :)
Open [File] -> [Project Structure...]
Select [app] in the left pad
Select [Dependencies] in the right tabs
Click [+] button on the right side
Select [1 Library dependency]
Choose [com.android.support:design ~~]
Click [OK] button and so on
Result: library added in [Project's External Libraries]
------ edit -----------------------------------
You can also add this External library in build.gradle(Module:app)
press Alt+Enter in build.gradle(Module:app)
-> add library dependency
-> choose what you need
and press "Sync Now" positioned up right corner