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#import <UIKit/UIKit.h>
#import "CustomUIViewModel.h"

@interface CustomUIView : UIView
// 步骤3 提供模型
@property (nonatomic, strong)CustomUIViewModel *model;
@end

.m文件
#import "CustomUIView.h"

@interface CustomUIView()

@property (nonatomic,weak) UILabel *lable;

@end

@implementation CustomUIView

// 步骤 1：重写initWithFrame:方法，创建子控件并 - 添加
- (instancetype)initWithFrame:(CGRect)frame {
    
    self = [super initWithFrame:frame];
    if (self) {
        
        UILabel *lable = [[UILabel alloc] init];
        self.lable = lable;
        [self addSubview:lable];
    }
    return self;
}
// 步骤 2：重写layoutSubviews，子控件设置frame
- (void)layoutSubviews {
    
    [super layoutSubviews];
    CGSize size = self.frame.size;
    self.lable.frame = CGRectMake(0, 0, size.width * 0.5, size.height * 0.5);
}
// 步骤 4： 子控件赋值
- (void)setModel:(CustomUIViewModel *)model {
    
    _model = model;
    self.lable.text = model.name;
}

@end