iOS-UILabel中文字与边框间距的自定义

Posted 2023-02-26

参考技术A .h文件

----------------------------------------------------------------------------------------------------------------

#import

@interface ShowLabel : UILabel

@property ( nonatomic , assign ) UIEdgeInsets edgeInsets;

@end

----------------------------------------------------------------------------------------------------------------

.m文件

----------------------------------------------------------------------------------------------------------------

#import "ShowLabel.h"

@implementation ShowLabel

- (CGRect)textRectForBounds:(CGRect)bounds limitedToNumberOfLines:(NSInteger)numberOfLines

    UIEdgeInsetsinsets = self .edgeInsets;

    CGRect rect = [ super textRectForBounds:UIEdgeInsetsInsetRect(bounds, insets)

                    limitedToNumberOfLines:numberOfLines];

    rect.origin.x    -= insets.left;

    rect.origin.y    -= insets.top;

    rect.size.width  += (insets.left+ insets.right);

    rect.size.height+= (insets.top+ insets.bottom);

    return rect;



- ( void )drawTextInRect:(CGRect)rect

    [ super drawTextInRect:UIEdgeInsetsInsetRect(rect, self .edgeInsets)]; 



/*

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

- (void)drawRect:(CGRect)rect

    // Drawing code



*/

@end

----------------------------------------------------------------------------------------------------------------

使用方法和系统方法一样

 ShowLabel*areaLb1=[[ShowLabel alloc]init];

                [cell.contentViewaddSubview:areaLb1];

areaLb1.edgeInsets=UIEdgeInsetsMake(5,5,5,5);//设置内边距

                [areaLb1sizeToFit];//重新计算尺寸，会执行Label内重写的方法