ios - reloadData not working for UICollectionView in iOS7 -


so have search method "searchtablelist" , after result want, want reload uicollectionview 

- (void)searchbar:(uisearchbar *)searchbar textdidchange:(nsstring *)searchtext {    // nslog(@"text change - %d",issearching);      //remove objects first.     [filteredcontentlist removeallobjects];      if([searchtext length] != 0) {         issearching = yes;         [self searchtablelist];     }     else {         issearching = no;     }      [self.collectionview reloaddata];   }

however after "[self.collectionview reloaddata]" nothing happens !

after using this, crashes time ! 

[self.collectionview reloaditemsatindexpaths:[self.collectionview indexpathsforvisibleitems]]; [self.collectionview reloaddata];

what can do, alot!!! :d

error message is:

    2014-04-16 18:24:35.684 sampleproject1[59602:60b] item width must less width of uicollectionview minus section insets left , right values. 2014-04-16 18:24:37.709 sampleproject1[59602:60b] *** assertion failure in -[uicollectionview _enditemanimations], /sourcecache/uikit_sim/uikit-2935.137/uicollectionview.m:3688 2014-04-16 18:24:37.713 sampleproject1[59602:60b] *** terminating app due uncaught exception 'nsinternalinconsistencyexception', reason: 'attempt insert item 0 section 0, there 0 items in section 0 after update'

fixed it:

basically returning count of unused array had lenght of 0 instead of relevant array !

so had change this:

if (issearching) {      return [searchresult count];  } else {     return [self.tracks count]; }

to: if (issearching) {

        return [filteredcontentlist count];      } else {         return [self.tracks count];     }

then after removed reloaddata jargons , replaced with:

[self.collectionview reloaddata];

thanks alot guys !!

  • after writing reloaditemsatindexpaths no need of writing again reloaddata.
  • reload respective collection view row using main thread.

code snippet:

[[nsoperationqueue  mainqueue]  addoperationwithblock:^{      // reload respective collection view row using main thread.      [self.collectionview reloaditemsatindexpaths:[self.collectionview indexpathsforvisibleitems]];  }];

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