關於UILabel自適應寬度高度

label自適應寬度

CGSize labelSize=[label.text                     sizeWithAttributes:@{NSFontAttributeName: [UIFont    systemFontOfSize:fontOfLab]}];

label.font = [UIFont systemFontOfSize:fontOfLab];

label 自適應高度

CGSize labelSize = [self.lab.text sizeWithFont:self.lab.font constrainedToSize:size lineBreakMode:NSLineBreakByClipping];

這種方法雖然能夠用  可是官網已經建議咱們使用下面那種來代替了 哎  如今才發現

//自動折行設置

     label.lineBreakMode =  UILineBreakModeWordWrap ;

     label.numberOfLines = 0;

     

     //自適應高度

     CGRect txtFrame = label.frame;

     

     label.frame = CGRectMake(10, 100, 300,

                              txtFrame.size.height =[label.text boundingRectWithSize:

                                                     CGSizeMake(txtFrame.size.width, CGFLOAT_MAX)

                                                                             options: NSStringDrawingUsesLineFragmentOrigin  |  NSStringDrawingUsesFontLeading

                                                                          attributes:[ NSDictionary  dictionaryWithObjectsAndKeys:label.font, NSFontAttributeName ,  nil ] context: nil ].size.height);

     label.frame = CGRectMake(10, 100, 300, txtFrame.size.height);

     

     [ self .view addSubview:label];