Question

Hello dear programmers,

I have a requirement for creating a custom tableviewcell with a method below:

@interface CustomTableCell : UITableViewCell {

}

@implementation CustomTableCell

-(void)setObjectWithType:(NSString *)objectType atPlace:(CGRect) placeOfObject
{
    class className=NSClassFromString(objectType);

    className *objectName = [[NSClassFromString(objectType) alloc] init];// Giving error    
}

Please solve this issue to create any type of object by passing the arguments like below:

CustomTableCell *cell=[[CustomTableCell alloc] init];
[cell setObjectWithType:@"UILabel" atPlace:CGRectMake(0, 0, 100, 30)];

Thanks, in advance.

Answer 1

This sounds like it could turn into a nightmare down the line, but to solve your immediate problem, you’d have to use id or the lowest common superclass (e.g. UIView) when creating your arbitrary objects:

id objectName = [[NSClassFromString....

The compiler can’t cast dynamically the way you are attempting. It has to be done at runtime.