Question

I have a UILabel and when the value change in the label, I want to highlight it’s background color from another color and exists for 2,3 seconds and get back to normal color.

Anyone have an idea how to do this?

Answer 1

1. Add quartzCore as a framework
2. Add an import QuartzCore/QuartzCore.h

3. Use this code

   - (void) initController
   {
         UIButton *myButton = [view viewWithTag:1]; // Just reference the button you have
         [myButton addTarget:self action:@selector(animateLabel) forControlEvents:UIControlEventTouchUpInside];  
   }
   
   - (void) animateLabel
   {
   
     CABasicAnimation* highlightAnim = [CABasicAnimation animationWithKeyPath:@"backgroundColor"];
     highlightAnim.toValue = (id)[UIColor blueColor].CGColor;
     highlightAnim.duration = 2;          // In seconds 
     highlightAnim.autoreverses = YES;    // If you want to it to return to the normal color
     [label.layer addAnimation:highlightAnim forKey:nil];
    }