Question

I am trying to write a generic method that would allow me to pass the following: “x”, “y” “object” and then have it move. Currently I have this:

 -(void) changeObjectLocations: (integer_t) xSpot: (integer_t) ySpot: (id) sender   {

  if (![sender isKindOfClass:[UIButton class]])
   {
       UIButton *myObject = (UIButton *)sender;
       [UIView animateWithDuration:1.5              
        animations:^{                
        CGRect newFrame = myObject.frame;
        newFrame.origin.x = xSpot;
        newFrame.origin.y = ySpot;
        myObject.frame = newFrame;
    }];             
}
  else if (![sender isKindOfClass:[UILabel class]])
  {
    UILabel *myObject = (UILabel *)sender;
    [UIView animateWithDuration:1.5  animations:^{                
        CGRect newFrame = myObject.frame;
        newFrame.origin.x = xSpot;
        newFrame.origin.y = ySpot;
        myObject.frame = newFrame;
    }];  
  }
}

I then want to call it like so:

-(void) orientationBlockLandscape {

    [self changeObjectLocations: 456 :282 : btn1] ;
    [self changeObjectLocations: 391 :227 : lblTitle] ;

}

Although it is working, on compile I get the following warning:

SecondViewController.m:33: warning: ‘SecondViewController’ may not respond to ‘-changeObjectLocations:::’

Is there a better way I can/should be passing the object? Thanks in advance for any and all help.

Geo…

Answer 1

Based on the warning outputted, it sounds like you didn’t define changeObjectLocations in the header of your SecondViewController — or it’s not the same signature as what you’ve implemented.