Iphone UILabel上的自定义设置是否值得引入UILabel的子类

我有一个标签，我想在几个地方使用它。它只有以下自定义设置

label.font = [UIFont fontWithName:@"Arial" size:12.0];
label.textAlignment = UITextAlignmentCenter;
label.backgroundColor = [UIColor clearColor];
label.userInteractionEnabled = YES;
label.textColor = [UIColor whiteColor];

---

现在我想知道，我是否需要为它引入一个子类（UILabel）？由于它被用于多个地方，对于这种用途来说，什么样的设计模式才是最好的呢？

我会在一些可用的类上使用一个类别或只是一个基本函数。子类化会大大增加工作量。i、 e.在整个项目中，必须不断更改IB中的类或更改所有代码

类别可以如下所示：

@implementation UILabel (FormatMyLabels)
-(void)useMySpecialFormatting{
    self.font = [UIFont fontWithName:@"Arial" size:12.0];
    self.textAlignment = UITextAlignmentCenter;
    self.backgroundColor = [UIColor clearColor];
    self.userInteractionEnabled = YES;
    self.textColor = [UIColor whiteColor]; 
}
@end

-(void)useSpecialFormattingOnLabel:(UILabel *)label{
    label.font = [UIFont fontWithName:@"Arial" size:12.0];
    label.textAlignment = UITextAlignmentCenter;
    label.backgroundColor = [UIColor clearColor];
    label.userInteractionEnabled = YES;
    label.textColor = [UIColor whiteColor];
}

你会像这样使用它：

[self.myFirstLabel使用mySpecialFormatting]

函数可以如下所示：

@implementation UILabel (FormatMyLabels)
-(void)useMySpecialFormatting{
    self.font = [UIFont fontWithName:@"Arial" size:12.0];
    self.textAlignment = UITextAlignmentCenter;
    self.backgroundColor = [UIColor clearColor];
    self.userInteractionEnabled = YES;
    self.textColor = [UIColor whiteColor]; 
}
@end

-(void)useSpecialFormattingOnLabel:(UILabel *)label{
    label.font = [UIFont fontWithName:@"Arial" size:12.0];
    label.textAlignment = UITextAlignmentCenter;
    label.backgroundColor = [UIColor clearColor];
    label.userInteractionEnabled = YES;
    label.textColor = [UIColor whiteColor];
}

您可以这样使用：

[ClassOrInstanceWithFunction useSpecialFormattingOnLabel:self.myFirstLabel]
我会在一些可用的类上使用一个类别或只是一个基本函数。子类化会大大增加工作量。i、 e.在整个项目中，必须不断更改IB中的类或更改所有代码

类别可以如下所示：

@implementation UILabel (FormatMyLabels)
-(void)useMySpecialFormatting{
    self.font = [UIFont fontWithName:@"Arial" size:12.0];
    self.textAlignment = UITextAlignmentCenter;
    self.backgroundColor = [UIColor clearColor];
    self.userInteractionEnabled = YES;
    self.textColor = [UIColor whiteColor]; 
}
@end

-(void)useSpecialFormattingOnLabel:(UILabel *)label{
    label.font = [UIFont fontWithName:@"Arial" size:12.0];
    label.textAlignment = UITextAlignmentCenter;
    label.backgroundColor = [UIColor clearColor];
    label.userInteractionEnabled = YES;
    label.textColor = [UIColor whiteColor];
}

你会像这样使用它：

[self.myFirstLabel使用mySpecialFormatting]

函数可以如下所示：

@implementation UILabel (FormatMyLabels)
-(void)useMySpecialFormatting{
    self.font = [UIFont fontWithName:@"Arial" size:12.0];
    self.textAlignment = UITextAlignmentCenter;
    self.backgroundColor = [UIColor clearColor];
    self.userInteractionEnabled = YES;
    self.textColor = [UIColor whiteColor]; 
}
@end

-(void)useSpecialFormattingOnLabel:(UILabel *)label{
    label.font = [UIFont fontWithName:@"Arial" size:12.0];
    label.textAlignment = UITextAlignmentCenter;
    label.backgroundColor = [UIColor clearColor];
    label.userInteractionEnabled = YES;
    label.textColor = [UIColor whiteColor];
}

您可以这样使用：

[ClassOrInstanceWithFunction useSpecialFormattingOnLabel:self.myFirstLabel]
就我个人而言，在这种情况下我不会创建子类。你可以做很多事情。。。您可以创建一个类别。e、 g.在.h.中

@interface UILabel (MyLabel)

+ (UILabel *)createMyLabelWithFrame;

@end

在.m中：

@implementation UILabel (MyLabel)

+ (UILabel *)createMyLabelWithFrame:(CGRect)frame {
  UILabel *label = [[UILabel alloc] initWithFrame:frame];
  label.font = [UIFont fontWithName:@"Arial" size:12.0];
  label.textAlignment = UITextAlignmentCenter;
  label.backgroundColor = [UIColor clearColor];
  label.userInteractionEnabled = YES;
  label.textColor = [UIColor whiteColor];
  return label;
}

就个人而言，我不会在这种情况下创建子类。你可以做很多事情。。。您可以创建一个类别。e、 g.在.h.中

@interface UILabel (MyLabel)

+ (UILabel *)createMyLabelWithFrame;

@end

在.m中：

@implementation UILabel (MyLabel)

+ (UILabel *)createMyLabelWithFrame:(CGRect)frame {
  UILabel *label = [[UILabel alloc] initWithFrame:frame];
  label.font = [UIFont fontWithName:@"Arial" size:12.0];
  label.textAlignment = UITextAlignmentCenter;
  label.backgroundColor = [UIColor clearColor];
  label.userInteractionEnabled = YES;
  label.textColor = [UIColor whiteColor];
  return label;
}