how to get variable stored in another object using objective c

SaveNotes *saveNotes = [[SaveNotes alloc]initWithTitleString:title descrString:descr]; [titleDescrObjects addObject:saveNotes]; [saveNotes release];

from the above code i have saved title,descr to a class SaveNotes , and then i have stored that object in my NSMutableArray -> titleDescrObjects, Its working fine,

i need to get particular objects "descr" alone,

how to get the descr from objectAtIndex:i

i am trying

for (int i=0; i<[titleDescrObjects count]; i++)
{   
  N开发者_Python百科SLog(@"\n ((%@))\n",[titleDescrObjects objectAtIndex:i].descr); 
}

Thanks in advance,

-objectAtIndex: returns an id. Since an id can be of any Objective-C class, the compiler cannot associate the property .descr into a getter, which is why it chooses not to make it valid at all.

There are 3 ways to fix it.

1. Use a getter: [[titleDescrObjects objectAtIndex:i] descr]

2. Cast into a SaveNotes: ((SaveNotes*)[titleDescrObjects objectAtIndex:i]).descr

3. Use fast enumeration. This is the recommended method.

   for (SaveNotes* notes in titleDescrObjects) {
      NSLog(@"\n ((%@))\n", notes.descr); 
   }