I met the same problems and has solved.
Due to my situation, I guess your build.gradle file for app project contains snippets below:
android {
...
buildTypes {
debug {...}
release {...}
dexOptions {...}
}
}
but actually, dexOptions is not a build type, you should move dexOptions section out buildTypes, like this:
android {
...
dexOptions {
...
}
buildTypes {
debug {...}
release {...}
}
}
Hope that can help someone.