[Kotlin] Treat Key Event

키 이벤트를 처리하기 위한 함수 예시 코드

 

•     override fun dispatchKeyEvent(event: KeyEvent): Boolean
•     override fun dispatchGenericMotionEvent(ev: MotionEvent?): Boolean
•     override fun onGenericMotionEvent(event: MotionEvent?): Boolean

    override fun dispatchKeyEvent(event: KeyEvent): Boolean {
        // Check if the event is a key down event
        val keyName = KeyEvent.keyCodeToString(event.keyCode)
        Log.d("[dispatchKeyEvent()] ", "$keyName @ ${event?.source}")
        if (event?.action == KeyEvent.ACTION_DOWN) {
            when (event.keyCode) {
                KeyEvent.KEYCODE_BACK -> {
                    // Finish the activity, which will effectively close the app
                    finish()
                    return true
                }
                KeyEvent.KEYCODE_ENTER -> {
                    if (isWarmingupFinished) {
                        val intent = Intent(this, GameSelection::class.java)
                        startActivity(intent)
                        return true
                    }
                    if (isPartImageUpdatable) updatePartImage(false)
                    if (!isWarmingupStarted) {
                        isWarmingupStarted = true
                        ivCountdown.visibility = View.VISIBLE
                    }
                    return true
                }
                KeyEvent.KEYCODE_VOLUME_DOWN, KeyEvent.KEYCODE_VOLUME_UP -> {
                    // Handle volume keys if needed
                    return true
                }
                else -> {
                    // Handle other keys
                    val keyName = KeyEvent.keyCodeToString(event.keyCode)
                    val currentTime = SimpleDateFormat("HH:mm:ss", Locale.getDefault()).format(Date())
                    displayText = "Key: $keyName\nTime: $currentTime"
                    Toast.makeText(applicationContext, displayText, Toast.LENGTH_LONG).show()
                    Log.d("[Key]", keyName)
                    // Convert the text to a bitmap and set it to the ImageView
                    return true
                }
            }
        }
        // If the event is not handled, let the system handle it
        return super.dispatchKeyEvent(event)
    }

    override fun dispatchGenericMotionEvent(ev: MotionEvent?): Boolean {
        Log.d("[Source]", ev?.source.toString())
        if (ev?.source == 8194) {
            Log.d("8194", "pushed")
            return true
        }
        return super.dispatchGenericMotionEvent(ev)
    }

    override fun onGenericMotionEvent(event: MotionEvent?): Boolean {
        Log.d("[Source - onGenericMotionEvent]", event?.source.toString())
        if (event?.source == 8194) {
            Log.d("8194 - onGenericMotionEvent", "pushed")
            return false  // 이벤트가 처리되었음을 알리기 위해 true를 반환
        }
        return super.onGenericMotionEvent(event)  // 나머지 이벤트는 기본 처리 방식으로 처리
    }