Make sure the following dependency is added to your app's build.gradle file under dependencies:
compile 'com.android.support:design:25.3.1'
Then you can use the Bottom sheet using these options:
BottomSheetBehavior to be used with CoordinatorLayoutBottomSheetDialog which is a dialog with a bottom sheet behaviorBottomSheetDialogFragment which is an extension of DialogFragment, that creates a BottomSheetDialog instead of a standard dialog.