[Android] PopupMenu

PopupMenu

설명

• 개발자가 원할 때 원하는 곳에 띄울 수 있는 메뉴

코드

res/layout/activity_main.xml

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

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Hello World" />

    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="click" />

</LinearLayout>

res/menu/popup_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/menu1"
        android:title="메뉴1" />
    <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)

        val textView = findViewById<TextView>(R.id.textView)
        val button = findViewById<Button>(R.id.button)

        button.setOnClickListener {
            val popupMenu = PopupMenu(this, textView)

            menuInflater.inflate(R.menu.popup_menu, popupMenu.menu)

            popupMenu.setOnMenuItemClickListener(PopupListener())
            popupMenu.show()
        }
    }

    inner class PopupListener : PopupMenu.OnMenuItemClickListener {
        override fun onMenuItemClick(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 false
        }
    }
}

참고

• https://youtu.be/PuDG8vi7EVM