[Android] ActionBar

ActionBar

설명

• 화면 상단에 배치된 바에 OptionMenu 항목의 일부를 배치할 수 있다.

주요 속성

• icon
  • ActionBar에 표시되는 아이콘 설정
• showAsAction
  • ActionBar 배치 여부 결정
  • Never : 메뉴를 ActionBar에 표시하지 않음, 디폴트
  • Always : 항상 ActionBar에 표시
  • ifRoom : ActionBar에 공간이 허락될 경우 표시
  • withText : title 속성의 문자열과 함께 표시
  • collapseActionView : 접었다 펼쳤다 하면서 뷰를 표시
• actionViewClass
  • 접었다 폈다할 때 나타날 뷰를 설정

코드

res/menu/option_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/menu1"
        android:icon="@android:drawable/ic_menu_search"
        android:title="메뉴1"
        app:actionViewClass="android.widget.SearchView"
        app:showAsAction="always|collapseActionView" />
    <item
        android:id="@+id/menu2"
        android:title="메뉴2" />
    <item
        android:id="@+id/menu3"
        android:title="메뉴3">
        <menu>
            <item
                android:id="@+id/menu3_1"
                android:title="메뉴3-1" />
            <item
                android:id="@+id/menu3_2"
                android:title="메뉴3-2" />
        </menu>
    </item>
</menu>

MainActivity

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
    }

    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
        menuInflater.inflate(R.menu.option_menu, menu)

        val searchItem: MenuItem? = menu?.findItem(R.id.menu1)
        val searchView: SearchView = searchItem?.actionView as SearchView

        searchView.queryHint = "검색어를 입력해주세요."
        searchView.setOnQueryTextListener(object: SearchView.OnQueryTextListener{
            override fun onQueryTextSubmit(query: String?): Boolean {
                Toast.makeText(baseContext, "onQueryTextSubmit - $query", Toast.LENGTH_SHORT).show()
                return false
            }

            override fun onQueryTextChange(newText: String?): Boolean {
                Toast.makeText(baseContext, "onQueryTextChange - $newText", Toast.LENGTH_SHORT).show()
                return false
            }
        })

        return true
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        when (item?.itemId) {
            R.id.menu1 -> Toast.makeText(baseContext, "메뉴1", Toast.LENGTH_SHORT).show()
            R.id.menu2 -> Toast.makeText(baseContext, "메뉴2", Toast.LENGTH_SHORT).show()
            R.id.menu3 -> Toast.makeText(baseContext, "메뉴3", Toast.LENGTH_SHORT).show()
            R.id.menu3_1 -> Toast.makeText(baseContext, "메뉴3-1", Toast.LENGTH_SHORT).show()
            R.id.menu3_2 -> Toast.makeText(baseContext, "메뉴3-2", Toast.LENGTH_SHORT).show()
        }
        return super.onOptionsItemSelected(item)
    }
}

참고

• https://youtu.be/1N5LBgTEZis