同时按下两个按钮

Question

我有左右两个按钮，我只想同时按下两个按钮，然后两个日志都将显示。

 val handleTouch = View.OnTouchListener { v, event ->

        val leftDown : Int
        when(v){
            btn_leftThumb -> when (event.action) {
                MotionEvent.ACTION_DOWN -> pressed(true, null)
                MotionEvent.ACTION_UP -> pressed(false, null)
            }

            btn_rightThumb -> when (event.action) {
                MotionEvent.ACTION_DOWN -> pressed(null, true)
                MotionEvent.ACTION_UP -> pressed(null, false)
            }

        }

        true
    }

    btn_leftThumb.setOnTouchListener(handleTouch)
    btn_rightThumb.setOnTouchListener(handleTouch)


private fun pressed(left:Boolean?, right:Boolean?){

    if(left == true && right == true){
        Log.i(TAG, "BOTH")
    }else if(left == false && right == true){
        Log.i(TAG, "RIGHT")
    }else if(left == true && right == false){
        Log.i(TAG, "LEFT")
    }
}

Answer 1

您将必须将每个按钮的按下状态存储在某个全局变量和onTouchListener更新中，然后使用方法pressed()检查两个变量

Answer 2

这是解决方案：

private var actionLeft：String =“”

private var actionRight：字符串=“”

和onCreate：

val handleTouch = View.OnTouchListener {v，event->

        when(v){
            btn_leftThumb -> when (event.action) {
                MotionEvent.ACTION_DOWN -> {actionLeft = "DOWN"
                    pressed(actionLeft, actionRight)
                }
                MotionEvent.ACTION_UP -> {actionLeft = "UP"
                    pressed(actionLeft, actionRight)
                }
            }

            btn_rightThumb -> when (event.action) {
                MotionEvent.ACTION_DOWN -> {actionRight = "DOWN"
                    pressed(actionLeft, actionRight)
                }
                MotionEvent.ACTION_UP -> {actionRight = "UP"
                    pressed(actionLeft, actionRight)

                }
            }


        }

        true
    }



    btn_leftThumb.setOnTouchListener(handleTouch)
    btn_rightThumb.setOnTouchListener(handleTouch)

按下私人乐趣（左：字符串？，右：字符串？）{

    if(right == "DOWN" && left =="DOWN") {
        Log.d(TAG, "DOWN")
    }else if (right == "UP" && left =="DOWN"){
        Log.d(TAG, "CANCELLED")
    }else if (right == "DOWN" && left =="UP"){
        Log.d(TAG, "CANCELLED")
    }else if (right == "UP" && left =="UP"){
        Log.d(TAG, "CANCELLED")
    }


}