ios - add button navigationbar center -

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it easy add left , right buttonbaritem on navigationbar

but hope add button navigationbar center

my code 

 [self.navigationitem.titleview addsubview:button ];//button not nil

but nothing happens

yourc comment welcome

the titleview nil default code doesn't anything.

change code to:

self.navigationitem.titleview = button;

this sets button titleview.


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