最近在项目中,有个地方须要设置UILabel的内边距,即字体和Label控件之间的间隙。UILabel不像UIButton那样,有个contentEdgeInsets、titleEdgeInsets、imageEdgeInsets供咱们设置文字或图片与按钮边界的界限,因此咱们只能另外想其余办法来实现。其实,办法也很简单,只须要咱们自定义UILabel,而后重写drawTextInRect:方法便可实现咱们的目标。web
CustomLabel.hsvg
#import <UIKit/UIKit.h> @interface CustomLabel : UILabel @property (nonatomic, assign) UIEdgeInsets textInsets; // 控制字体与控件边界的间隙 @end
CustomLabel.m字体
#import "CustomLabel.h" @implementation CustomLabel - (instancetype)init { if (self = [super init]) { _textInsets = UIEdgeInsetsZero; } return self; } - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { _textInsets = UIEdgeInsetsZero; } return self; } - (void)drawTextInRect:(CGRect)rect { [super drawTextInRect:UIEdgeInsetsInsetRect(rect, _textInsets)]; } @end
Demo.matom
CustomLabel *titleLabel = [[CustomLabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.f, 24.0f)]; titleLabel.backgroundColor = [UIColor whiteColor]; titleLabel.textColor = [UIColor blackColor]; titleLabel.font = [UIFont systemFontOfSize:12.0f]; titleLabel.textInsets = UIEdgeInsetsMake(0.f, 15.f, 0.f, 0.f); // 设置左内边距