iOS 自动适应 UILabel 的宽度~demo

来源：互联网发布：ov7670能接51单片机吗编辑：程序博客网时间：2024/05/15 23:56

//需要分类: 联系人:石虎 QQ: 1224614774 昵称:嗡嘛呢叭咪哄

//自适应宽度效果:

自动适应 <wbr>UILabel <wbr>的宽度

#import "UILabel+Extension.h"

- (void)viewDidLoad {

[super viewDidLoad];

//直接引用分类功能

[UILabel createLabelWithContent:@"10011111111110" addView:self.view lableX:10lableY:111 lableH:30 fontSize:16 backgroundColor:[UIColor redColor] textColor:[UIColor blueColor] borderColor:[UIColor yellowColor]];

}

+ (instancetype)createLabelWithContent:(NSString *)content addView:(UIView *)view lableX:(CGFloat)lableX lableY:(CGFloat)lableY lableH:(CGFloat)lableH fontSize:(CGFloat)fontSize backgroundColor:(UIColor *)backgroundColor textColor:(UIColor*)textColor borderColor:(UIColor *)borderColor{

NSString *string = [NSString stringWithFormat:@"%@",content];

CGRect textRect = [self boundingString:string size:CGSizeMake([UIScreenmainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height *2)fontSize:fontSize];

CGFloat rowWidth = 0.0;

if (string.length == 1) {

rowWidth = textRect.size.width + 35;

}else{

rowWidth = textRect.size.width + 25;

}

UILabel *lable = [[UILabel alloc]initWithFrame:CGRectMake(lableX, lableY, rowWidth, lableH)];

lable.layer.masksToBounds = YES;

lable.layer.cornerRadius = 15;

lable.layer.borderColor = borderColor.CGColor;

lable.layer.borderWidth = 1;

lable.backgroundColor = backgroundColor;

lable.textAlignment = NSTextAlignmentCenter;

lable.textColor = textColor;

lable.text = string;

[view addSubview:lable];

return lable;

}

//自动适应 lable 的宽度和高度

+ (CGRect)boundingString:(NSString *)string size:(CGSize)size fontSize:(NSInteger)fontSize

{

NSStringDrawingOptions options = NSStringDrawingTruncatesLastVisibleLine |NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading;

NSDictionary *attributes = @{NSFontAttributeName: [UIFontsystemFontOfSize:fontSize]};

return [string boundingRectWithSize:size options:optionsattributes:attributes context:nil];

}

阅读全文

1 0