如何编写自定义 UILabel 类 [英] How to write a Custom UILabel Class

问题描述

在我的项目中，每个屏幕都有大量的 UILabels 可用，这就是为什么我为 UILabel 创建了一个单独的类，我想在那个班.

In my project there is a huge number of UILabels available for each screen that's why I have created one separate class for UILabel and I want to set all label properties in that class.

但是标签属性和标签也没有添加到我的 MainViewController 中.

But label properties and label also not adding in my MainViewController.

我的代码:

自定义标签:

#import "CustomLabel.h"

@implementation CustomLabel

- (id) init {
    self = [super init];
    if(self){

        [self setupUI];
    }
    return self;
}

- (void)setupUI {

    [self setBackgroundColor:[UIColor redColor]];
    [self setTextColor:[UIColor blackColor]];
}

主视图控制器:

#import "MainViewController.h"
#import "CustomLabel.h"

@interface MainViewController ()
{
    CustomLabel * mainLabel;
}

@end

@implementation SampleViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    mainLabel = [[CustomLabel alloc]initWithFrame:CGRectMake(50, 150, 100, 35)];
    [self.view addSubview:mainLabel];
}

@end

推荐答案

awakeFromNib 不会被调用，如果你只是自己分配/初始化它，你需要把那个 [self setupUI]; 在你应该覆盖的 init 方法中

awakeFromNib doesnt get called if you just alloc/init it yourself afaik, you need to put that [self setupUI]; in the init method that you should override

- (id) initWithFrame:(CGRect)frame {
   self = [super initWithFrame:frame];
   if(self){

      [self setupUI];
   }
   return self;
}

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