ios - SearchBar works only after I call a UIAlertView -

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i have search bar in application sometime works, sometime not. keyboard normally, when press keyboard button, nothing happens. when does't work not call -(bool) searchbar:(uisearchbar *)searchbar shouldchangetextinrange:(nsrange)range replacementtext:(nsstring *)text

after call uialertview in application, searchbar works great. why? doesn't make sense

the searchbar init hidden, , when user click in searchbutton, searchbar appears. http://pastebin.com/xuagtd1w


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