效果图

需求

1. 显示"➕"和"➖"按钮
2. 显示商品展示区(View)

代码

-(void)layoutUI{
    UIButton *btnAdd = [[UIButton alloc]init];// 选中按钮
    UIButton *btnRemove = [UIButton buttonWithType:UIButtonTypeCustom];// 取消按钮
    UIView * shopView = [[UIView alloc]init];
    
    btnAdd.frame = (CGRect){{80,60},{28,28}};
    btnRemove.frame = (CGRect){{188,60},{28,28}};
    shopView.frame = (CGRect){{40,100},{300,440}};
    
    shopView.backgroundColor = [UIColor blackColor];
    [btnAdd setBackgroundImage:[UIImage imageNamed:@"add"] forState:UIControlStateNormal];
    [btnRemove setBackgroundImage:[UIImage imageNamed:@"remove"] forState:UIControlStateNormal];
    
    [self.view addSubview:btnAdd];
    [self.view addSubview:btnRemove];
    [self.view addSubview:shopView];
}