ios - How to release memory for declared object in iPhone -

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this question has answer here:

i'm facing small problem,

i declare array in .h file , allocate in viewdodload method. in dealloc method check if array not equal nil array=nil. it's crashing in ios 5.1.1. can't understand reason crash.

my code,

   @interface sampleapp : uiviewcontroller    {         nsmutablearray *objarray;    }    @end     @implementation sampleapp     - (void)viewdidload    {         [super viewdidload];          objarray=[[nsmutablearray alloc]init];    }    -(void)dealloc    {       [super dealloc];       if (objarray!=nil)      {          [objarray removeallobjects];          [objarray release];objarray=nil;      }   }

add [super dealloc]; @ end of dealloc method , not @ beginning. recommended apple in documentation dealloc method.

when not using arc, implementation of dealloc must invoke superclass’s implementation last instruction.

modify code below,

   -(void)dealloc    {       if (objarray!=nil)      {          [objarray removeallobjects];          [objarray release];objarray=nil;      }       [super dealloc];    }

also, need not call [objarray removeallobjects] when releasing entire array. when array released, internally call release on contained objects.

hope helps!


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