Question

I have a object from a class that is being copied to a NSMutableArray. I do that 5 times. However, whenever I try to retrieve the objects from that array they are all the same.

Here’s the sample code:

[myProperty setAddress:@"Av. dos Estados, 70."]; 
[myProperty setPropType:casaRua];
[myProperty setRentalPrice:1430.0];
[propertiesArray addObject:myProperty];

myProperty = [propertiesArray objectAtIndex:0];
NSLog(@"Price 0  %.2f\n", [myProperty rentalPrice]); //In this I got 1430.0

[myProperty setAddress:@"Av. das Nações, 10. Ap: 103."];
[myProperty setPropType:apto];
[myProperty setRentalPrice:450.0];
[propertiesArray addObject:myProperty];

myProperty = [propertiesArray objectAtIndex:0];//indexPath.row];
NSLog(@"Price 0  %.2f\n", [myProperty rentalPrice]); **//In this I got 450.0???**

myP = [propertiesArray objectAtIndex:1];//indexPath.row];
NSLog(@"Price 1  %.2f\n", [myP rentalPrice]); //In this I got 450.0

What am I doing wrong? It seems the array was overwritten with the addObject

Answer 1

You’re re-modifying the same “property” object over and over again.

You need to either copy it or instantiate a new one each time before modifying it, after adding the previous object.