SizeChanger of Pagination should hide when PageSize is set

• I have searched the issues of this repository and believe that this is not a duplicate.

Reproduction link

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Steps to reproduce

1. Set pageSize of a Pagination.
2. When total number gets large, the SizeChanger shows.
3. I don’t need that SizeChanger when I already have a pageSize, not speaking that SizeChanger doesn’t work if I don’t set onShowSizeChange.

What is expected?

Don’t automatically show the SizeChanger when I already have a pageSize.

What is actually happening?

SizeChanger automatically shows when I already have a pageSize, which can’t work if I don’t set onShowSizeChange.

Environment	Info
antd	4.1.4
React	16.12.0
System	win10
Browser	Google Chrome version79.0.3945.88

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The original default value false of showSizeChanger is just fine in the old version. The new default value is OK but it will be much more userfirendly if you hide the SizeChanger when pageSize is already set. So I don’t have to manually set showSizeChanger to false every time I use it.

[afc163]

It is not a bug, check https://github.com/ant-design/ant-design/pull/22711 and https://ant.design/components/table/#API

You can turn off size changer by setting showSizeChanger={fasle} manually.

[sajinsha9595]

Even though i set an onSizeChange function while filtering pagination based on 10/20/50 its not working. idk why its not working… This is the Code

const [pageSize, setPageSize] = useState(20); const [currentPage, setCurrentPage] = useState(0);

const handlePageNumSizeClick = (current, size) => { setPageSize(size); setCurrentPage(current - 1); };

<Pagination hideOnSinglePage={true} size=“small” total={bannerCount} current={currentPage + 1} defaultPageSize={DEFAULT_PAGE_SIZE} onChange={handlePageNumClick} showSizeChanger onShowSizeChange={handlePageNumSizeClick} />