Help ! Get array from another class (Dao) and release it

hi,

have function in dao class return array. array function , used in class when release array, application crash when run it.

here code:

dao.m

//funtion data database , return nsmutablearray.
-(nsmutablearray*) selecttypesarray
{
nsmutablearray * types = [nsmutablearray alloc]init];

// code here data database.

return types;
}


firstviewcontroller.m

viewdidload
{

dao dao = [[dao alloc]init];

nsmutablearray * temp = [dao selecttypesarray];

nsmutablearray * types = temp;

[self.displaytypes:types];

[temp release];
[dao release];

}

-(void)displaytypes: (nsmutablearray*)types
{
nslog(@"types count %i", [types count]);
}

when run program, crash error message : "-[__nsarraym count]: message sent deallocated". think happens because have released "temp" , "types" reference deallocated object ... ...but don't know how write code in correct way. can tell me correct way write code?

comments , suggestions welcome , appreciated. lot.

 

you need (re)view memory management programming guide learn how use retain, release , autorelease correctly objects neither deallocated prematurely nor leaked because aren't deallocated @ all.

 

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