Item separator line are not shown all in ListView! maybe textSize is the reason or Bug?

As you can see in this screenshoot ListView doesn't show all item sep开发者_Python百科arator, seems that the problem is setting textSize for textView, if i remove textSize all work fine.

Thanks in advance for any replay!

This is a little testcase:

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I hope this helps you.

ListView lv=getListView();
lv.setDividerHeight(2);