iOS实现热搜功能(循环创建Label篇-最简单的代码)

label的核心代码

- (UILabel *)labelWithTitle:(NSString *)title{

    UILabel *label = [[UILabel alloc] init];
    label.text = title;
    [label sizeToFit];
    label.layer.cornerRadius = 3;
    label.layer.borderWidth = 0.5;
    label.userInteractionEnabled = YES;
    label.font = [UIFont systemFontOfSize:13];
    label.textAlignment = NSTextAlignmentCenter;
    return label;
}

布局的核心代码

-(void)setupLayoutViews{
    
    CGFloat x = 15;
    CGFloat y = 10 + 40;
    
    NSArray *titles = @[@"苹果",@"桃子",@"梨子",@"橘子",@"葡萄"];
    for (int i = 0; i < titles.count; i++) {
        
        UILabel *label = [self labelWithTitle:titles[I]];
        CGFloat width = label.frame.size.width + 30;
        
        if (x + width + 15 > self.bounds.size.width) {
            y += 40;//换行
            x = 15; //15位置开始
        }
        
        label.frame = CGRectMake(x, y, width, 30);
        [self addSubview:label];
        x += width + 10;//宽度+间隙
    }
}

展示图

展示-图

流程图

流程-图

PS:初始化一个变量x
然后x叠加 (宽+间隙: x += width + 10),
如果x叠加的宽度大于当前容器视图的宽度则:
y向下移动(高度+间隙) ,并且让x从初始值(15)开始