UILabel hauteur?

Question

J'ai une configuration UILabel avec IB et avec ce code:

// setup label 
sv.text = @"When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation."; 
sv.lineBreakMode = UILineBreakModeWordWrap; 
sv.numberOfLines = 0; 
[sv sizeToFit]; 

ma question est, comment puis-je obtenir la hauteur de UILabel?

Answer 1

Vérifiez la propriété bounds.

sv.bounds.size.height 

Answer 2

soit des éléments suivants devrait faire l'affaire ...

<ullabel>.frame.size.height 
<uilabel>.bounds.size.height 

Utilisez NSLog pour jeter un oeil ...

NSLog(@"%f", myLabel.bounds.size.height); 
NSLog(@"%f", myLabel.frame.size.height); 

Answer 3

Essayez celui .....

  CGSize maximumSize1 = CGSizeMake(100, 9999); 
      NSString *myString1 = @"When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation."; 
      UIFont *myFont1 = [UIFont boldSystemFontOfSize:14];//[UIFont fontWithName:@"Helvetica" size:14]; 


      UILabel *lbl_Title=[[UILabel alloc] init]; 
      lbl_Title.lineBreakMode=UILineBreakModeClip; 
      CGSize myStringSize1 = [myString1 sizeWithFont:myFont1 
             constrainedToSize:maximumSize1 
              lineBreakMode:lbl_Title.lineBreakMode]; 
      lbl_Title.frame=CGRectMake(20, 10, myStringSize1.width, myStringSize1.height); 
      lbl_Title.font=myFont1; 
      //  lbl_Title.font=[UIFont boldSystemFontOfSize:14]; 
      lbl_Title.backgroundColor=[UIColor clearColor]; 
      lbl_Title.numberOfLines=100; 
      lbl_Title.text=myString1;