How to adjust and make the width of a UILabel to fit the text size?

Question

In my project, there is a UILabel with text. The font size is 16pt. The text contents are changed depending on different cases. I hope it can automatically adju

Answer 1

NSString *txt1=@"I am here.";
CGSize stringsize1 = [txt1 sizeWithFont:[UIFont systemFontOfSize:14]]; 
[label setFrame:CGRectMake(x,y,stringsize1.width,hieght)];
[label setText:txt1];