๐ŸŽจ ์•ˆ๋“œ๋กœ์ด๋“œ UI๋Š” ์–ด๋–ป๊ฒŒ ์—…๋ฐ์ดํŠธ ๋ ๊นŒ ?

sery270ยท2021๋…„ 4์›” 7์ผ
3

Android

๋ชฉ๋ก ๋ณด๊ธฐ
6/13

์•ˆ๋…•ํ•˜์„ธ์š” :) ์•ˆ๋“œ๋กœ์ด๋“œ ๊ฐœ๋ฐœ์„ ํ•˜๋‹ค๋ณด๋ฉด, tv.text = "hello"๋‚˜, tv.setText("World!")๋กœ UI๋ฅผ ์—…๋ฐ์ดํŠธํ•  ๋•Œ๊ฐ€ ์žˆ๋Š”๋ฐ์š”. ์ด๋Ÿฐ ๋ช…๋ น์–ด๊ฐ€ ์‹คํ–‰๋ ๋•Œ ๋‚ด๋ถ€์ ์œผ๋กœ ์–ด๋–ค์ผ์ด ์ผ์–ด๋‚˜๋Š”์ง€ ๊ถ๊ธˆํ•ด๋ณด์‹ ์  ์—†์œผ์‹ ๊ฐ€์š” ? ์ „ ๋„ˆ๋ฌด ๊ถ๊ธˆํ–ˆ๋„ค์š”. ์˜ค๋Š˜์€ ์•ˆ๋“œ๋กœ์ด๋“œ์—์„œ UI ๋ณ€๊ฒฝ ๋งค์ปค๋‹ˆ์ฆ˜์ด ์–ด๋–ป๊ฒŒ ๋˜๋Š”์ง€ ์•Œ์•„๋ณด๋ คํ•ฉ๋‹ˆ๋‹ค. ์˜ค๋Š˜๋„ ํ™”์ดํŒ… ์ž…๋‹ˆ๋‹ค ! ๐ŸŒฟ

1๏ธโƒฃ View ๊ด€๋ จ ์šฉ์–ด์™€ ํด๋ž˜์Šค, ์ธํ„ฐํŽ˜์ด์Šค๋“ค์„ ์•Œ์•„๋ณด์ž


  • ์•„๋ž˜์„œ ์„ค๋ช…ํ•˜๋Š” invalidation, traversal์— ๋Œ€ํ•œ ์„ค๋ช…์€ Drawn out: How Android renders (Google I/O '18)์„ ์ฐธ๊ณ ํ•˜์—ฌ ์ž‘์„ฑํ•˜์˜€์Šต๋‹ˆ๋‹ค.

invalidation

  • ๋ทฐ ๊ณ„์ธต ๊ตฌ์กฐ, ์ฆ‰ ๋ถ€๋ชจ์—๊ฒŒ ๋‹ค์‹œ ๊ทธ๋ ค์ ธ์•ผํ•จ์„ ์•Œ๋ ค์ฃผ๋Š” ์ฒ˜๋ฆฌ์ž…๋‹ˆ๋‹ค.

  • ๋ทฐ๋ฅผ ๊ทธ๋ฆฌ๋Š” ์ž‘์—…์ด ์•„๋‹Œ, ์ž์‹ ์˜ ๋ถ€๋ชจ์—๊ฒŒ ๋ณ€๊ฒฝ์‚ฌํ•ญ์ด ์ƒ๊ฒผ์Œ์„ ์•Œ๋ ค์ฃผ๋Š” ์ž‘์—…์ž…๋‹ˆ๋‹ค.

    The process of causing things to be redrawn

traversal

  • ํ”„๋ ˆ์ž„์„ ๊ทธ๋ฆฌ๋Š”๋ฐ ํ•„์š”ํ•œ ๋ชจ๋“  ๋‹จ๊ณ„์„ ์ˆ˜ํ–‰ํ•˜๋Š” ์ฒ˜๋ฆฌ์ž…๋‹ˆ๋‹ค.

  • ๋ทฐ์˜ ํฌ๊ธฐ ์ธก์ • measure, ๋ทฐ์˜ ์œ„์น˜ ๋ฐ ํฌ๊ธฐ ๋ฐฐ์น˜ layout, ๋ทฐ๋ฅผ ๊ทธ๋ฆฌ๊ธฐ draw ํ•˜๋Š” ์ฒ˜๋ฆฌ๋ฅผ ์ผ์ปซ์Šต๋‹ˆ๋‹ค.

  • traversal ์งํ›„ draw()๊ฐ€ ํ˜ธ์ถœ๋ฉ๋‹ˆ๋‹ค.

    Performing all phases of rendering for a frame

ViewGroup, ViewRootImpl, ViewParent

2๏ธโƒฃ invalidate()๋ฅผ ํ†ตํ•œ UI ๋ณ€๊ฒฝ ๋งค์ปค๋‹ˆ์ฆ˜


UI ๋ณ€๊ฒฝ ์•Œ๊ณ ๋ฆฌ์ฆ˜

invalidate() ๋ฉ”์„œ๋“œ์˜ ํ˜ธ์ถœ ์Šคํƒ ํ™•์ธ

  • View.invalidate()

    • ViewGroup.invalidateChild()
      • parent = parent.invalidateChildInParent() : ViewGroup.invalidateChildInParent()
      • parent = parent.invalidateChildInParent() : ViewRootImpl.invalidateChildInParent()
        • ViewRootImpl.scheduleTraversals() : traversal ์ž‘์—…์„ ์Šค์ผ€์ค„๋ง
        • ViewRootImpl.performTraversal() : traversal ์ž‘์—…์„ ์‹คํ–‰ (draw ๋ฉ”์„ธ์ง€๋ฅผ ๋ณด๋ƒ„)
  • View.invalidate()๋ฅผ ํ˜ธ์ถœํ•˜์—ฌ, ๋ทฐ ๋ณ€๊ฒฝ์„ ์œ„ํ•œ invalidate ์ž‘์—…์„ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค. View.invalidate()๋Š” ๋‚ด๋ถ€์ ์œผ๋กœ ํ˜„์žฌ์˜ ๋ถ€๋ชจ์—๊ฒŒ invalidate ์ž‘์—…์„ ์•Œ๋ฆฌ๊ธฐ ์œ„ํ•ด, ViewGroup.invalidateChild()๋ฅผ ํ˜ธ์ถœํ•ฉ๋‹ˆ๋‹ค.

  • ViewGroup.invalidateChild()์—์„ , ๊ณ„์†ํ•ด์„œ ๋ถ€๋ชจ์—๊ฒŒ invalidate ์ž‘์—…์„ ์•Œ๋ฆฌ๊ฒŒ ๋ฉ๋‹ˆ๋‹ค. ํ•ด๋‹น ์ž‘์—…์€ do-while๋ฌธ์„ ํ†ตํ•ด ๋ฐ˜๋ณต๋ฉ๋‹ˆ๋‹ค. ์ด ๋ฐ˜๋ณต์•ˆ์—์„ , ViewGroup.invalidateChildInParent()๊ฐ€ ํ˜ธ์ถœ๋˜๋Š”๋ฐ, ์ด ๋ถ€๋ถ„์ด ๋ฐ”๋กœ ๋ถ€๋ชจ์—๊ฒŒ invalidate ์ž‘์—…์„ ์•Œ๋ฆฌ๋Š” ๋ถ€๋ถ„์ž…๋‹ˆ๋‹ค. ๋‹ค๋งŒ ์ด ๋ฐ˜๋ณต์€ ํ˜„์žฌ์˜ ๋ถ€๋ชจ๊ฐ€ Root๊ฐ€ ์•„๋‹๋•Œ๊นŒ์ง€๋งŒ ๋ฐ˜๋ณตํ•˜๊ฒŒ ๋ฉ๋‹ˆ๋‹ค.

  • ๋งŒ์•ฝ, ํ˜„์žฌ์˜ ๋ถ€๋ชจ๊ฐ€ Root๋ผ๋ฉด, ViewGroup.invalidateChildInParent() ๋Œ€์‹  ViewRootImpl.invalidateChildInParent()๊ฐ€ ํ˜ธ์ถœ๋ฉ๋‹ˆ๋‹ค. ์ฆ‰, do-while์˜ ๋งˆ์ง€๋ง‰ ํ˜ธ์ถœ์€ ViewRootImpl.invalidateChildInParent()๊ฐ€ ๋ฉ๋‹ˆ๋‹ค.

  • ViewRootImpl.invalidateChildInParent()์—์„  traversal ์ž‘์—…์ด ์‹œ์ž‘๋ฉ๋‹ˆ๋‹ค. ํฌ๊ฒŒ scheduleTraversals() ์™€ performTraversal() ๋กœ ๋‚˜๋ˆ„์–ด ์„ค๋ช…ํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค.

    • ViewRootImpl.invalidateChildInParent()์—์„ , traversal ์ž‘์—…์„ ์Šค์ผ€์ค„๋งํ•˜๊ธฐ ์œ„ํ•ด, ViewRootImpl.scheduleTraversals()์„ ํ˜ธ์ถœํ•ฉ๋‹ˆ๋‹ค.
    • ViewRootImpl.invalidateChildInParent()์—์„ , traversal ์ž‘์—…์„ ์‹คํ–‰ํ•˜๊ธฐ ์œ„ํ•ด, ViewRootImpl.performTraversal()๋ฅผ ํ˜ธ์ถœํ•ฉ๋‹ˆ๋‹ค.
  • ViewRootImpl.scheduleTraversals() ์€ ๊ธฐ์กด์—” MainLooper์˜ MessageQueue์— ์ง์ ‘ Message๋ฅผ ๋„ฃ์—ˆ์ง€๋งŒ, ์ ค๋ฆฌ๋นˆ ๋ถ€ํ„ฐ๋Š” Choreographer์—๊ฒŒ ์œ„์ž„ํ•œ๋‹ค๊ณ  ํ•ฉ๋‹ˆ๋‹ค. ํ•ด๋‹น ์ž‘์—…์„ ์œ„์ž„ํ•  ๋ฟ, MainLooper์˜ MessageQueue์— Message๋ฅผ ๋„ฃ๋Š” ๊ฑด ๋ณ€ํ•จ ์—†์Šต๋‹ˆ๋‹ค.

invalidateChild() , invalidateChildInParent() DEPRECATED

  • ViewParent์˜ invalidateChild() , invalidateChildInParent()๊ฐ€ DEPRECATED๋˜์–ด, onDescendantInvalidated()๋ฅผ ์‚ฌ์šฉํ•ด์•ผํ•ฉ๋‹ˆ๋‹ค. ์œ„ ๊ทธ๋ฆผ๋“ค์— ๋ฐ˜์˜ํ•ด๋ณด๋ฉด ์•„๋ž˜์™€ ๊ฐ™์Šต๋‹ˆ๋‹ค.

3๏ธโƒฃ invalidate()๋ฅผ ์—ฌ๋Ÿฌ ๋ฒˆ ํ˜ธ์ถœํ•˜๋Š” ๊ฒฝ์šฐ (invalidate()๋ฅผ ์—ฐ์† ํ˜ธ์ถœํ•˜๋Š” ๊ฒฝ์šฐ)


๋‰ด๋น„ ๊ฐœ๋ฐœ์ž๋“ค์˜ ํ”ํ•œ ์‹ค์ˆ˜

  • ์•„๋ž˜ ์ฝ”๋“œ๋Š” ํ™”๋ฉด์„ ์ž๋™์œผ๋กœ ์—…๋ฐ์ดํŠธํ•˜๋Š” ์ž‘์—…์„ ์˜๋„ํ•œ ์ฝ”๋“œ์ž…๋‹ˆ๋‹ค. 1์ดˆ์”ฉ์˜ ํ…€์„ ๊ฐ€์ง€๋ฉฐ, 0๋ถ€ํ„ฐ 4๊นŒ์ง€์˜ ์ˆซ์ž๊ฐ€ ํ™”๋ฉด์— ๋ณด์—ฌ์ง€๊ฒŒ ๋˜๋Š”, ์ฆ‰ 5๋ฒˆ์˜ ํ™”๋ฉด ์ „ํ™˜์„ 1์ดˆ ๊ฐ„๊ฒฉ์œผ๋กœ ํ•˜๊ฒŒ ํ•˜๋Š” ์ฝ”๋“œ๋ฅผ ์ž‘์„ฑํ•˜๊ณ  ์‹ถ์—ˆ์Šต๋‹ˆ๋‹ค. 1์ดˆ์”ฉ sleep ํ•ด์ฃผ๋ฏ€๋กœ์จ, ํ™”๋ฉด ์—…๋ฐ์ดํŠธ์— ํ…€์„ ์คฌ์œผ๋‹ˆ ์ œ๋Œ€๋กœ ์ž‘๋™ํ•ด์•ผ ๊ธฐ๋ถ„์ด ์ข‹์„ ๊ฒƒ ๊ฐ™์Šต๋‹ˆ๋‹ค. ๊ณผ์—ฐ ์ด ์ฝ”๋“œ๊ฐ€ ์ œ๋Œ€๋กœ ์ž‘๋™ ๋ ๊นŒ์š”?

    class MainActivity : AppCompatActivity() {
        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
            setContentView(R.layout.activity_main)
            findViewById<Button>(R.id.button).setOnClickListener {
                Log.d("setOnClickListener", SystemClock.uptimeMillis().toString())
                onClick(findViewById<TextView>(R.id.text_view))
            }
        }
    
        fun onClick(view: TextView) {
            for (i in 0..4) {
                view.text = i.toString()
                Log.d("for ๋ฌธ ${i}๋ฒˆ์งธ", SystemClock.uptimeMillis().toString())
                SystemClock.sleep(1000)
            }
    
        }
    }
  • ์œ ๊ฐ์Šค๋Ÿฝ๊ฒŒ๋„, ์œ„ ์ฝ”๋“œ๋Š” ์•„๋ž˜์ฒ˜๋Ÿผ ์ž‘๋™๋ฉ๋‹ˆ๋‹ค. ์•ˆ๋“œ๋กœ์ด๋“œ ๊ฐœ๋ฐœ์— ์ž…๋ฌธํ•˜์‹œ๋ฉด์„œ, ์•„๋ž˜์™€ ๊ฐ™์€ ์‹ค์ˆ˜๋ฅผ ์ €์งˆ๋Ÿฌ๋ณธ ๊ฒฝํ—˜์ด ์žˆ์œผ์‹ค๊ฒ๋‹ˆ๋‹ค. (ใ…Žใ…Ž)

    • ๋กœ๊ทธ๋ฅผ ์ฐ์–ด๋ณด๋‹ˆ, for๋ฌธ์€ ์ •ํ™•ํžˆ 5๋ฒˆ ๋Œ์•˜์Šต๋‹ˆ๋‹ค. ๊ทธ๋ ‡๋‹ค๋ฉด ํ‹€๋ฆผ์—†์ด setText()๋„ 5๋ฒˆ ํ˜ธ์ถœ๋˜์—ˆ์Šต๋‹ˆ๋‹ค. ๋กœ์ง์ด ํ‹€๋ฆฐ ๊ฒƒ ๊ฐ™์ง„ ์•Š์€๋ฐ, ๋„๋Œ€์ฒด ์™œ 4๋งŒ ์ถœ๋ ฅ๋˜๋Š”์ง€ ๋ชจ๋ฅด๊ฒ ์Šต๋‹ˆ๋‹ค.

์ด ์ฝ”๋“œ๊ฐ€ ์˜๋„ํ•œ๋Œ€๋กœ ์ž‘๋™ํ•˜์ง€ ์•Š๋Š” ์›์ธ

  • ์ด ์ฝ”๋“œ์˜ ๋ฌธ์ œ๋ฅผ ์ •์˜ํ•˜๋ฉด ์•„๋ž˜์™€ ๊ฐ™์Šต๋‹ˆ๋‹ค. ์•ž์—์„œ traversal์„ ํ†ตํ•ด MainLooper์˜ MessageQueue์— Message๋ฅผ ๋„ฃ๋Š”๋‹ค๊ณ  ํ–ˆ๋Š”๋ฐ์š”. ์ด ์ž‘๋™์›๋ฆฌ๋ฅผ ์ ์šฉํ•ด๋ณด๋ฉด, 1์ดˆ ๊ฐ„๊ฒฉ์ด ์—†๋‹ค๋Š” ๋ฌธ์ œ์˜ ์›์ธ์€ ์ดํ•ดํ•  ์ˆ˜ ์žˆ๊ฒŒ๋ฉ๋‹ˆ๋‹ค. ๋‹ค๋ฅธ ๋ฌธ์ œ๊นŒ์ง€ ํ•˜๋‚˜์”ฉ ์„ค๋ช…๋“œ๋ฆฌ๊ฒ ์Šต๋‹ˆ๋‹ค.
    1. 1์ดˆ ๊ฐ„๊ฒฉ์ด ์—†๋‹ค โ†’ MessageQueue์˜ Enqueueing๊ณผ ๊ด€๋ จ
    2. ํ™”๋ฉด ๋ณ€๊ฒฝ์ด 1๋ฒˆ๋งŒ ์ด๋ฃจ์–ด์ง„๋‹ค โ†’ View์˜ mPrivateFlags์™€ ๊ด€๋ จ

์ž‘์—… ์‹คํ–‰ ์ˆœ์„œ์™€ ๊ด€๋ จ๋œ ์›์ธ (Enqueueing)

  • ๊ธฐ์กด ์ดํ•ด๋ฅผ ์ ์šฉํ•ด๋ณธ๋‹ค๋ฉด, ์•„๋ž˜ ๊ณผ์ •์ด ์ˆœ์ฐจ์ ์œผ๋กœ 5๋ฒˆ ๋ฐ˜๋ณต๋˜์–ด์•ผํ•ฉ๋‹ˆ๋‹ค.

    invalidate() โ†’ performTraversal() โ†’ draw Message โ†’ Sleep

  • ๋”ฐ๋ผ์„œ, ์•„๋ž˜ ๊ทธ๋ฆผ๊ณผ ๊ฐ™์ด ์ž‘์—…์ด Enqueueing ๋ฉ๋‹ˆ๋‹ค. queueing๋œ ์ˆœ์„œ๋Œ€๋กœ ์ž‘์—…์ด ์ด๋ฃจ์–ด์ง€๊ฒŒ ๋˜์ฃ . ์ฆ‰, MessageQueue์— 0์„ ๊ทธ๋ฆฌ๋Š” ๋ฉ”์„ธ์ง€๋ถ€ํ„ฐ 4๋ฅผ ๊ทธ๋ฆฌ๋Š” M๊นŒ์ง€ ์ฐจ๋ก€๋Œ€๋กœ enqueue ๋œ๋‹ค๊ณ  ์ดํ•ด๋ฉ๋‹ˆ๋‹ค.

    • ์—ฌ๊ธฐ์„œ ์›์ธ 1์„ ์ดํ•ดํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
    • I P M S ์˜ ๊ณผ์ •์ด ์ด๋ค„์ง€๊ณ , M๋‹จ๊ณ„์—์„œ draw Message๋Š” ,MainThread์˜ ์ž‘์—…์œผ๋กœ, MessageQueue์— ์ €์žฅ๋ฉ๋‹ˆ๋‹ค. ์ฆ‰ Sleep์ด ์‹คํ–‰๋˜๋Š” ์‹œ์ ๊ณผ draw Message๊ฐ€ ์‹คํ–‰๋˜๋Š” ์‹œ์ ์ด ๋‹ค๋ฆ…๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ ํ™”๋ฉด ์ „ํ™˜๊ณผ Sleep์ด ์ˆœ์„œ๋Œ€๋กœ ์ด๋ค„์ง€์ง€ ์•Š์Šต๋‹ˆ๋‹ค.

mPrivateFlags์™€ ๊ด€๋ จ๋œ ์›์ธ

  • ๊ทธ๋ ‡๋‹ค๋ฉด ํ™”๋ฉด ๋ณ€๊ฒฝ์€ MessageQueue ๊ทธ๋Œ€๋กœ 5๋ฒˆ ์ด๋ค„์ง€๋‚˜, ๋„ˆ๋ฌด ๋น ๋ฅธ ์†๋„๋กœ ๋ณ€๊ฒฝ๋˜์–ด ์šฐ๋ฆฌ๊ฐ€ ๊ฐ์ง€ํ•  ์ˆ˜ ์—†๋Š”๊ฒƒ์€ ์•„๋‹๊นŒ ? ๋ผ๋Š” ์˜๋ฌธ์ด ์ƒ๊ธธ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ํ•˜์ง€๋งŒ ํ™”๋ฉด ๋ณ€๊ฒฝ์€ ๋‹จ 1๋ฒˆ๋งŒ ์ด๋ค„์ง€๊ฒŒ ๋ฉ๋‹ˆ๋‹ค. MessageQueue์—” ๋‹จ 1๊ฐœ์˜ draw Message๋งŒ ๋“ค์–ด๊ฐ€๊ฒŒ ๋˜๊ธฐ ๋•Œ๋ฌธ์ž…๋‹ˆ๋‹ค.
  • View์˜ mPrivateFlags๋ฅผ ํ†ตํ•ด, ๋‹จ 1๊ฐœ์˜ ๋ฉ”์„ธ์ง€๋งŒ MessageQueue ๋“ค์–ด๊ฐ€๊ฒŒ ์ œ์–ดํ•ด์ค๋‹ˆ๋‹ค. ์ฆ‰, View์˜ mPrivateFlags๋Š” ์—ฐ์†์ ์ธ invalidate() ํ˜ธ์ถœ์— ๋Œ€ํ•ด, ๋ชจ๋“  ํ˜ธ์ถœ์ด ViewRootImpl๊นŒ์ง€ ๋„๋‹ฌํ•˜์ง€ ์•Š๊ณ , ์ฒซ ๋ฒˆ์งธ ํ˜ธ์ถœ๋งŒ ViewRootImpl์— ๋„๋‹ฌํ•˜๊ฒŒ ์ œ์–ดํ•ด์ค๋‹ˆ๋‹ค.
    • ์ฆ‰ Traversal ์ž‘์—…์„ ๋งก์€ ViewRootImpl์— ๋”ฑ ํ•œ ๋ฒˆ๋งŒ ๋„๋‹ฌํ•˜๊ฒŒ ๋˜๋ฏ€๋กœ, ๋‹จ ํ•œ๋ฒˆ์˜ ํ™”๋ฉด ์ „ํ™˜๋งŒ ์ด๋ค„์ง€๊ฒŒ ๋ฉ๋‹ˆ๋‹ค.

#๏ธโƒฃ Reference


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๊ฐœ๋ฐœ์„ธ๋ฆฌ์˜ ์„ฑ์žฅ๊ธฐ๐ŸŒฟ

1๊ฐœ์˜ ๋Œ“๊ธ€

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2023๋…„ 3์›” 4์ผ

์ข‹์€ ๊ธ€ ๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค!
ํ˜น์‹œ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ์ฝ”๋“œ์—์„œ
CoroutineScope(Dispatchers.IO).launch { binding.searchEditText.setText("1234") }
์•ฑ์ด ํฌ๋ž˜์‹œ๊ฐ€ ๋‚˜์ง€ ์•Š๊ณ  ์ •์ƒ์ ์œผ๋กœ ์ž‘๋™ํ•˜๋Š” ์ด์œ ๊ฐ€ ์œ„์˜ ๋ณธ๋ฌธ๊ณผ ๊ด€๋ จ์ด ์žˆ๋Š” ๋‚ด์šฉ์ผ๊นŒ์š”?
Ui ๊ด€๋ จ ๋ณ€๊ฒฝ ์ž‘์—…์€ ๋ฉ”์ธ ์Šค๋ ˆ๋“œ (Ui ์Šค๋ ˆ๋“œ)์—์„œ ํ•ด์•ผ๋งŒ ํ•œ๋‹ค๊ณ  ์•Œ๊ณ  ์žˆ์—ˆ๋Š”๋ฐ ์ž‘๋™๋˜์–ด์„œ ๋ญ”๊ฐ€ ์˜์•„ํ•ด์„œ ํ•ด๋‹น ๋‚ด์šฉ์„ ๊ฒ€์ƒ‰ํ•ด๋ณด๋‹ค๊ฐ€ ์จ์ฃผ์‹  ๊ธ€์„ ์ฝ์–ด๋ณด๊ฒŒ ๋˜์—ˆ์Šต๋‹ˆ๋‹ค ใ…Ž

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