objective c - Can't call a method from another class using object -

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i trying call method class using object. there comes no warnings or errors, call not been made. execution not been transferred method specified.

@interface epub : nsobject  - (void) paginatechapters;  @implementation epub   - (void) paginatechapters; {      (int i=0; i<chapterlinks.count; i++)      {         [self splitattributedstringtopages:[chapterfiles objectatindex:i] withchapter:[chaptersasattributedstringarray objectatindex:i]];      } }

then tried call using it's object

@interface epubrootviewcontroller : uiviewcontroller  {   epub *loadedepub; }  @implementation epubrootviewcontroller  -(void) viewdidload() {    loadedepub = [[epub alloc]init]; }  -(void)releasedata {     loadedepub=nil; }   -(void)changefontsize:(id)sender {           [self releasedata];           [loadedepub paginatechapters]; }

your loadedepub object nil when call method on it. must initialize object before respond method calls.


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