效果

image.png

demo

//    TagAppDto dto;
//    List<TagAppDto> dtoList = new ArrayList<>();
//    dtos.add(dtoList);
//    int num = 4;
//    for (Tag tag : list) {
//        dto = convert2dto(tag);
//        dtoList.add(dto);
//        if (dtoList.size() == num) {
//            dtoList = new ArrayList<>();
//            dtos.add(dtoList);
//            num = num == 4 ? 3 : 4;
//        }
//    }
    
    NSArray *arr1 = @[@"一",@"二二",@"三三三",@"四四四四"];
    NSArray *arr2 = @[@"五五五五五",@"一",@"二二",];
    NSArray *arr3 = @[@"一",@"二二",@"三三三",@"四四四四"];
    NSArray *arr4 = @[@"五五五五五",@"一",@"二二",];
    NSArray *arr5 = @[@"一",@"二二",@"三三三",@"四四四四"];
    NSArray *arr12 = @[@"五五五五五",@"一",@"二二",];
    NSArray *arr6 = @[@"一",@"二二",@"三三三",@"四四四四"];
    NSArray *arr7 = @[@"五五五五五",@"一",@"二二",];
    NSArray *arr8 = @[@"一",@"二二",@"三三三",@"四四四四"];
    NSArray *arr9 = @[@"五五五五五",@"一",@"二二",];
    NSArray *arr10 = @[@"一",@"二二",@"三三三",@"四四四四"];
    NSArray *arr11 = @[@"五五五五五"];
    
    NSArray *array = @[arr1,arr2,arr3,arr4,arr5,arr12,arr6,arr7,arr8,arr9,arr10,arr11];
    
    float buttonW = (SCREEN_WIDTH - 50 - 45) / 4;
    
    UIView *listView;
    
    for (int i = 0; i < array.count; i++){
        
        NSArray *list = array[i];
        
        UIView *view = [UIView new];
        [self.view addSubview:view];
        [view mas_makeConstraints:^(MASConstraintMaker *make) {
            
            if (list.count == 4) {
                make.size.mas_equalTo(CGSizeMake(SCREEN_WIDTH - 50, 35));
                make.left.mas_equalTo(self.view.mas_left).offset(25);
            }else{
                make.size.mas_equalTo(CGSizeMake(SCREEN_WIDTH - 50 - buttonW, 35));
                make.left.mas_equalTo(self.view.mas_left).offset(25+buttonW/2+7.5);
            }
            if (listView) {
                make.top.mas_equalTo(listView.mas_bottom).offset(0);
            }else{
                make.top.mas_equalTo(self.titleLabel.mas_bottom).offset(40);
            }
        }];
        listView = view;
        
        UIButton *listButton;
        for (NSString *title in list) {
            UIButton *button = [UIButton new];
            [button setTitle:title forState:UIControlStateNormal];
            [button setTitleColor:WHColor_1779ff forState:UIControlStateNormal];
            [button setTitleColor:WhiteColor forState:UIControlStateSelected];
            [button setBackgroundImage:[UIImage imageWithColor:WhiteColor] forState:UIControlStateNormal];
            [button setBackgroundImage:[UIImage imageWithColor:WHColor_1779ff] forState:UIControlStateSelected];
            if (IPhone6Plus_OR_6sPlus) {
                button.titleLabel.font = Font(12);
            }else{
                button.titleLabel.font = Font(11);
            }
            button.layer.cornerRadius = 12;
            button.layer.masksToBounds = YES;
            button.layer.borderWidth = 0.5;
            button.layer.borderColor = WHColor_1779ff.CGColor;
            [button addTarget:self action:@selector(tagButtonAction:) forControlEvents:UIControlEventTouchUpInside];
            [view addSubview:button];
            [button mas_makeConstraints:^(MASConstraintMaker *make) {
                make.top.mas_equalTo(view.mas_top).offset(0);
                if (listButton) {
                    make.left.mas_equalTo(listButton.mas_right).offset(15);
                }else{
                    make.left.mas_equalTo(view.mas_left).offset(0);
                }
                make.size.mas_equalTo(CGSizeMake(buttonW, 24));
            }];
            listButton = button;
        }
        
    }