how to get variable stored in another object using objective c

Question

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++)
{   
  NSLog(@"\n ((%@))\n",[titleDescrObjects objectAtIndex:i].descr); 
}

Thanks in advance,

kennytm · Accepted Answer · 2010-06-09 07:44:47Z

1

-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.

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

Use fast enumeration. This is the recommended method.

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

answered Jun 9, 2010 at 7:44

kennytm

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2 Comments

mac Over a year ago

excellent Kenny , its worked for case 2,3 , thank you very much. but its not working for case 1.

kennytm Over a year ago

@mac: Maybe your getter of the property .descr isn't -descr.

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