BottomSheetFragment.java

package com.example.fragment;

import android.os.Bundle;
import android.support.design.widget.BottomSheetBehavior;
import android.support.design.widget.FloatingActionButton;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.R;


public class BottomSheetFragment extends Fragment
{
	private View mRootView;


	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
	{
		mRootView = inflater.inflate(R.layout.fragment_bottom_sheet, container, false);
		return mRootView;
	}


	@Override
	public void onActivityCreated(Bundle savedInstanceState)
	{
		super.onActivityCreated(savedInstanceState);
		setupBottomSheet();
	}


	private void setupBottomSheet()
	{
		// reference
		final FloatingActionButton fab = (FloatingActionButton) mRootView.findViewById(R.id.fab);
		final View bottomSheet = mRootView.findViewById(R.id.fragment_bottom_sheet);

		// fab
		fab.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View view)
			{
				BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
				bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
			}
		});
	}
}