💌 [Android/Kotlin] BottomSheetDialogFragment 구현하기

공식 문서 링크

📌 앱 수준의 gradle 추가

dependencies {

	com.google.android.material:material:1.6.1
    
}

💜 BottomSheetDialogFragment 를 띄울 버튼 추가

MainActivity.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 
					...
								>
	...
  
	<LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:layout_marginVertical="10dp"
            android:orientation="vertical">
            <Button
                android:id="@+id/btn_bookmark"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="즐겨찾기"
                android:layout_centerVertical="true"
                android:layout_marginEnd="@dimen/margin_20"
                />
                
                ...
                
	</LinearLayout>
    
    ...
    
</FrameLayout>

💜 BottomSheetDialogFragment 추가

fragment_book_mark_bottom_sheet.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".ui.fragment.BookMarkBottomSheetFragment">


    <TextView
        android:paddingHorizontal="50dp"
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:textColor="@color/white"
        android:textStyle="bold"
        android:gravity="center"
        android:text="즐겨찾기 리스트"
        android:textSize="@dimen/size_30"
        android:drawableStart="@drawable/ic_heart"
        android:background="@color/main_pink2"/>

    <androidx.recyclerview.widget.RecyclerView
        android:layout_marginTop="10dp"
        android:id="@+id/rv_bookmarkList"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:listitem="@layout/item_bottom_sheet_bookmark_list"/>

</LinearLayout>

BookMarkBottomSheetFragment.kt

class BookMarkBottomSheetFragment(val mContext : Context) : BottomSheetDialogFragment() {

	// 뷰바인딩
	private var _binding: FragmentBookMarkBottomSheetBinding? = null
    private val binding get() = _binding!!

	override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        super.onCreateView(inflater, container, savedInstanceState)

        _binding = FragmentBookMarkBottomSheetBinding.inflate(inflater, container, false)

       ...
       
        return binding.root
    }

	// 리사이클러뷰 어댑터
	fun setAdapter(list: List<ParkBookmarkEntity>) {
        adapter = BookmarkAdapter(list,this)
        binding.rvBookmarkList.layoutManager =
            LinearLayoutManager(mContext)
        binding.rvBookmarkList.adapter = adapter
    }

    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }

}

💜 BottomSheetDialogFragment 띄우기

class MainActivity : AppCompatActivity() {

	 // 뷰바인딩
    private lateinit var binding: ActivityMainBinding
    private lateinit var mContext: Context

 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
        mContext = this
        
        binding = ActivityMainBinding.inflate(layoutInflater).also {
            setContentView(it.root)
        }
        
        ...
        
        with(binding) {
        
        	btnBookmark.setOnClickListener {
                val bottomSheet = BookMarkBottomSheetFragment(mContext)
                bottomSheet.show(supportFragmentManager,bottomSheet.tag)
            }
        }
 	}

			...
            
}

🤍 실행 결과