UILabel的文本调节宽度，以及字体自适应宽度

小鱼儿 2023-10-16 23:09 42阅读 0赞

之前在适配5s和6的机型时，因为UI是以6为标准切图，所以6以及以上都是没问题的，但是在5s上运行会导致部分字体变成.....，因此使用这些方法使文本保持没有......出现

但是对于相同排版的label，如果使用sizeToFit会导致一个label比其他label长，盖住之后的label；

如果使用adjustsFontSizeToFitWidth会导致当前label字体比其他label字体小，望大神给予一些适配意见，小弟感激不尽！

以下分别为sizeToFit和adjustsFontSizeToFitWidth效果和代码：

![Center][]

@interfaceViewController ()
    {
        UITextField         *textField;
        UILabel             *lbl_sizeToFit;
        UILabel             *lbl_fontToWidth;
    }
    
    @end
    
    @implementation ViewController
    - (void)viewDidLoad {
        [superviewDidLoad];
        [selfsetSubView];
    }
    
    - (void)setSubView
    {
        //button－SizeToFit
        UIButton *btn_sizeToFit = [[UIButtonalloc] initWithFrame:CGRectMake(60,60, 200,40)];
        btn_sizeToFit.backgroundColor = [UIColorgrayColor];
        [btn_sizeToFit setTitle:@"使用SizeToFit"forState:UIControlStateNormal];
        [btn_sizeToFit addTarget:selfaction:@selector(sizeToFitAction)forControlEvents:UIControlEventTouchUpInside];
        [self.viewaddSubview:btn_sizeToFit];
        
        UIButton *btn_fontToWidth = [[UIButtonalloc] initWithFrame:CGRectMake(60,120, 200,40)];
        btn_fontToWidth.backgroundColor = [UIColorgrayColor];
        [btn_fontToWidth setTitle:@"使用FontToWidth"forState:UIControlStateNormal];
        [btn_fontToWidth addTarget:selfaction:@selector(fontToWidthAction)forControlEvents:UIControlEventTouchUpInside];
        [self.viewaddSubview:btn_fontToWidth];
        //textField
        textField = [[UITextFieldalloc] initWithFrame:CGRectMake(60,180, 200,40)];
        //发送通知，文本改变
        [[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(changeTextField)name:UITextFieldTextDidChangeNotificationobject:nil];
        textField.borderStyle =UITextBorderStyleRoundedRect;
        [self.viewaddSubview:textField];
    
        //label-sizeToFit
        lbl_sizeToFit = [[UILabelalloc] initWithFrame:CGRectMake(60,240, 40,40)];
        lbl_sizeToFit.backgroundColor = [UIColororangeColor];
        [self.viewaddSubview:lbl_sizeToFit];
        
        //label-fontToWidth
        lbl_fontToWidth = [[UILabelalloc] initWithFrame:CGRectMake(60,300, 100,40)];
        lbl_fontToWidth.backgroundColor = [UIColorcyanColor];
        [self.viewaddSubview:lbl_fontToWidth];
    }
    
    //根据文本长度设置label的长度
    - (void)sizeToFitAction
    {
        [lbl_sizeToFitsizeToFit];
    }
    
    //根据label固定宽度自适应字体大小
    - (void)fontToWidthAction
    {
        lbl_fontToWidth.adjustsFontSizeToFitWidth =YES;
    }
    
    - (void)changeTextField
    {
        lbl_sizeToFit.text =textField.text;
        lbl_fontToWidth.text =textField.text;
    }
    
    @end

[Center]: https://img-blog.csdn.net/20160309231332453?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center