listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                showInputComment(view);
            }
        });

/**
     * 点击相应item，弹出输入框，item滚动到输入框上方
     *
     * @param itemView
     */
    public void showInputComment(View itemView) {
        SoftInputUtils.upSoftInput(mContext, etCommentContent);
        int coordinateY = getY(itemView);
        int height = itemView.getHeight();
        //item 底部y坐标
        final int itemBottomY = coordinateY + height;

        itemView.postDelayed(new Runnable() {
            @Override
            public void run() {
                int y = getY(llCommentInput);
                //滑动 RecyclerView，是对应 item 底部和输入框顶部对齐
                listView.smoothScrollBy(itemBottomY - y, 1000);
            }
        }, 300);
    }


    /**
     * 获取控件左上顶点 y 坐标
     *
     * @param view
     * @return
     */
    private int getY(View view) {
        int[] rect = new int[2];
        view.getLocationOnScreen(rect);
        return rect[1];//返回纵坐标
    }

public class SoftInputUtils {

    //弹出软键盘
    public static void upSoftInput(Context mContext, EditText et) {
        et.setFocusable(true);
        et.setEnabled(true);
        et.setFocusableInTouchMode(true);
        et.requestFocus();
        et.findFocus();
        InputMethodManager imm = (InputMethodManager) mContext.getSystemService(mContext.INPUT_METHOD_SERVICE);
        imm.showSoftInput(et, InputMethodManager.SHOW_FORCED);
    }

    //收起软键盘
    public static void hideSoftInput(Context mContext, EditText et) {
        InputMethodManager imm = (InputMethodManager) mContext.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(et.getWindowToken(), 0); //强制隐藏键盘
    }

}