Animating UILabel size decrease

Question

When increasing the height of label, everything is fine and smooth. When decreaseing, the label is instantly changing the size then repositioning with animation.

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Answer 1

Use a CGAffineTransform to do this.

[UIView animateWithDuration:1.0 animations:^{
    // Scale down 50%
    label.transform = CGAffineTransformScale(label.transform, 0.5, 0.5);
} completion:^(BOOL finished) {
    [UIView animateWithDuration:1.0 animations:^{
        // Scale up 50%
        label.transform = CGAffineTransformScale(label.transform, 2, 2);
    }];
}];