Core animation returns layer to the original position when label's text is changed

Question

I've got simple animation which moves my view's layer and remains in it's final state.

CGPoint originalPosition = self.redSquare.layer.position;
self.redSquare.layer.position   = CGPointMake(100, 100);
CABasicAnimation *animation = [[CABasicAnimation alloc]init];
animation.keyPath = @"position.x";
animation.fromValue = @(originalPosition.x);
animation.toValue = @250;
animation.duration = 2;

[self.redSquare.layer addAnimation:animation forKey:@"basic"];
self.redSquare.layer.position = CGPointMake(250, originalPosition.y);

But when I change a label's text the layer jumps to it's original position.

CGPoint originalPosition = self.redSquare.layer.position;
self.redSquare.layer.position   = CGPointMake(100, 100);
CABasicAnimation *animation = [[CABasicAnimation alloc]init];
animation.keyPath = @"position.x";
animation.fromValue = @(originalPosition.x);
animation.toValue = @250;
animation.duration = 2;
animation.delegate = self;

[self.redSquare.layer addAnimation:animation forKey:@"basic"];
self.redSquare.layer.position = CGPointMake(250, originalPosition.y);

self.label.text = @"Started";

Why does it happen?

Answer 1

Because,when you change your text,the view need to redraw,

If you enable autoLayout of this view(default is enabled), it will adjust frame to autolayout.

So there are to solutions

Option 1: Disable auto layout of your view

Option 2 When it comes to frame changed animation, try to animate autolayout