自己记忆,下次不用找

KeyboardView的onLongPress是长按监听,通过onLongPress可以获取键盘上用户长按的字母override fun onLongPress(popupKey: Keyboard.Key): Boolean {val label = popupKey.labelif (!TextUtils.isEmpty(label) && popupKey.codes.get(0) != MyKeyCode.CODE_SPACE && popupKey.codes.get(0) != MyKeyCode.KEYCODE_DONE) {val str = label.toString()keyboardPopup = KeyboardPopup(context, popupKey)val drawable = context.resources.getDrawable(R.drawable.bg_white_12)keyboardPopup?.setBackgroundDrawable(drawable)keyboardPopup?.update()keyboardPopup?.showAtLocation(this, Gravity.NO_GRAVITY, popupKey.x, popupKey.y)invalidateAllKeys()return true}return super.onLongPress(popupKey)
}

配合onTouchEvent可以做到弹出弹窗后,选择弹窗内容

override fun onTouchEvent(event: MotionEvent): Boolean {when (event.action) {MotionEvent.ACTION_MOVE -> {val x = event.x.toInt()val y = event.y.toInt()keyboardPopup?.run {if (this.isShowing()) {this.handleTouch(x, y)}}return false}MotionEvent.ACTION_UP -> {keyboardPopup?.run {if (this.isShowing()) {val inputMethodService = context as? MyInputMethodServiceval ic = inputMethodService?.currentInputConnectionic?.commitText(this.selectedLetter, 1)this.dismiss()keyboardPopup = null}}}}return super.onTouchEvent(event)}

keyLetters就是你的弹窗展示的候选字的集合,letterTextView就是弹窗内展示选中字的控件

fun handleTouch(x: Int, y: Int) {if (keyLetters?.size == 0) {return}if (contentView.width == 0) {return}// 根据手指滑动的位置计算选中的字母val letterIndex = (x / (contentView.width / keyLetters!!.size)).coerceIn(0, keyLetters!!.size - 1)val letterTextView = contentView.findViewById<TextView>(R.id.letterTextView)
}