From >>> https://github.com/ChangBoHua/CBUIKit
感觉这种写法可以节省很多代码，比较优雅，之前有用过vc分类来写，在view上就不能用，有点局限，还是用object来的方便
//调用
- (UILabel *)currentLabel{
if (!_currentLabel) {
_currentLabel = [CBUIKit createLabelWithTextColor:[UIColor orangeColor]
fontSize:15];
}
return _currentLabel;
}
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface CBUIKit : NSObject
+ (UILabel *)createLabelWithTextColor:(UIColor *)textColor
fontSize:(CGFloat)fontSize;
@implementation CBUIKit
+ (UILabel *)createLabelWithTextColor:(UIColor *)textColor
fontSize:(CGFloat)fontSize{
UILabel *label = [[UILabel alloc] initWithFrame:frame];
label.backgroundColor = backgroundColor;
label.textColor = textColor;
label.textAlignment = textAlignment;
label.numberOfLines = numberOfLines;
label.text = text;
label.font = [UIFont systemFontOfSize:fontSize];
return label;
}
