adjust UILabel width according to text length

CGFloat namelabelContraintsWithoutCallButton = _topView.width - SPACER ;
CGSize nameLabelSize = [contactItem.displayName sizeWithFont:_topView.nameLabel.font constrainedToSize:CGSizeMake(1000,NAME_FIELD_HEIGHT + 20) lineBreakMode:UILineBreakModeWordWrap];
if (nameLabelSize.width > namelabelContraintsWithCallButton) {
_topView.nameLabel.width = namelabelContraintsWithCallButton;
} else{
_topView.nameLabel.width = nameLabelSize.width;
}
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