自己用的,方便以后找

mBinding.clBottom是底部控件,软键盘弹出时放在软键盘上方,软键盘隐藏时在最底部

mBinding.clBottom.viewTreeObserver.addOnGlobalLayoutListener {
    // 获取屏幕的高度
    val screenHeight: Int = mBinding.clBottom.getRootView().getHeight()

    // 获取当前布局的可见高度
    val rect = Rect()
    mBinding.clBottom.getWindowVisibleDisplayFrame(rect)
    // 计算键盘的高度
    var keyboardHeight = screenHeight - rect.bottom;
    if (keyboardHeight > screenHeight * 0.15) {
        // 键盘显示
        showKeyBoardHeight=keyboardHeight
        mBinding.clBottom.updateLayoutParams<ConstraintLayout.LayoutParams> { bottomMargin = showKeyBoardHeight-hideKeyBoardHeight }
    } else {
        hideKeyBoardHeight=keyboardHeight
        // 键盘隐藏
        mBinding.clBottom.updateLayoutParams<ConstraintLayout.LayoutParams> { bottomMargin = 0 }
    }
}

mBinding.clBottom.updateLayoutParams<ConstraintLayout.LayoutParams> {

bottomMargin = showKeyBoardHeight-hideKeyBoardHeight

}

下方android代码即为上方kotlin,主要用于设置空间的bottomMargin

ConstraintLayout.LayoutParams layoutParams = (ConstraintLayout.LayoutParams) mBinding.clBottom.getLayoutParams();
layoutParams.bottomMargin = showKeyBoardHeight - hideKeyBoardHeight;
mBinding.clBottom.setLayoutParams(layoutParams);

部分手机可能设置了底部虚拟导航栏等,导致获取的屏幕高度需要再减去hideKeyBoardHeight得出来的高度才是正确高度,直接使用showKeyBoardHeight可能导致mBinding.clBottom和软键盘之间有底部虚拟导航栏的高度大小的空隙