Android 监听软键盘SoftKeyboard的高度变化

方案一，使用blankj:utilcode

• https://github.com/Blankj/AndroidUtilCode/blob/master/lib/utilcode/README-CN.md

        KeyboardUtil.observeKeyboard(requireActivity()) {
    
    
            val param = binding.flKeyboard.layoutParams
            param.height = it
            binding.flKeyboard.layoutParams = param
        }

方案二，自定义KeyboardUtil监听

• KeyboardUtil

package com.vision.mykeyboard

import android.app.Activity
import android.graphics.Rect

class KeyboardUtil {
    
    

    companion object {
    
    
        fun observeKeyboard(
            activity: Activity,
            listener: (keyboardHeight: Int) -> Unit
        ) {
    
    
            var lastKeyboardHeight = -1
            val decorView = activity.window.decorView
            //监听view的变化
            decorView.viewTreeObserver.addOnGlobalLayoutListener {
    
    
                val rect = Rect()
                decorView.getWindowVisibleDisplayFrame(rect)
                //屏幕上未被键盘挡住的区域高度
                val displayHeight = rect.height()
                //导航栏的高度
                val barHeight = getNavBarHeight(activity) + getStatusBarHeight(activity)
                //键盘高度
                val keyboardHeight = decorView.height - displayHeight - barHeight
                if (lastKeyboardHeight != keyboardHeight) {
    
    
                    listener.invoke(keyboardHeight)
                }
                lastKeyboardHeight = keyboardHeight
            }
        }

        //获取底部导航栏的高度
        private fun getNavBarHeight(activity: Activity): Int {
    
    
            val res = activity.resources
            val resourceId = res.getIdentifier("navigation_bar_height", "dimen", "android")
            return if (resourceId != 0) {
    
    
                res.getDimensionPixelSize(resourceId)
            } else {
    
    
                0
            }
        }

        //获取顶部状态栏高度
        private fun getStatusBarHeight(activity: Activity): Int {
    
    
            val resources = activity.resources
            val resourceId = resources.getIdentifier("status_bar_height", "dimen", "android")
            return resources.getDimensionPixelSize(resourceId)
        }
    }

}

• 使用
  flKeyboard是一个占位的FrameLayout

        KeyboardUtil.observeKeyboard(requireActivity()) {
    
    
            val param = binding.flKeyboard.layoutParams
            param.height = it
            binding.flKeyboard.layoutParams = param
        }

Demo下载地址

https://gitee.com/olleh/keyboard-util