最近在项目开发中遇到了不规则搜索布局的问题。之前常用的解决方案是用一个tableview用一个循环动态的加载，唯一的缺点是需要动态的移除，其实也已经足够。https://download.csdn.net/download/kuuailetianzi/9905316，需要的话可以下载使用。请教了一下身边的美女同事，她那边给出的思路是用UICollectionView的复用来实现。解决方案如下。
1、pod导入JQCollectionViewAlignLayout库
2、核心代码如下
//此处用库对象JQCollectionViewAlignLayout
JQCollectionViewAlignLayout * layout = [[JQCollectionViewAlignLayout alloc]init];
layout.itemSize = CGSizeMake(K_CC_SCREEN_WIDTH, 40);
//此处设置行间距
layout.minimumLineSpacing = 10;
//此处设置列间距
layout.minimumInteritemSpacing = 10;
self.collectionView = [[UICollectionView alloc]initWithFrame:CGRectZero collectionViewLayout:layout];
[self.bottomView addSubview:self.collectionView];
self.collectionView.delegate = self;
self.collectionView.dataSource = self;
self.collectionView.layer.masksToBounds = YES;
self.collectionView.layer.cornerRadius = 8.0;
self.collectionView.showsVerticalScrollIndicator = NO;
self.collectionView.showsHorizontalScrollIndicator = NO;
self.collectionView.backgroundColor = [UIColor clearColor];
[self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
make.width.mas_equalTo(K_CC_SCREEN_WIDTH);
make.bottom.mas_equalTo(self.bottomView);
make.left.mas_equalTo(0);
make.top.mas_equalTo(60);
}];
self.collectionView.contentInset = UIEdgeInsetsMake(10, 10, 10, 10);
[self.collectionView registerClass:[CCHighSeasPoolReturnCell class] forCellWithReuseIdentifier:kCellReuseIdentifier];
[self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:kFooterReuseIdentifier];
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
CCHighSeasPoolReturnCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:kCellReuseIdentifier forIndexPath:indexPath];
NSString *codevalue= self.data[indexPath.section].items[indexPath.item].itemtitle;
//选中项索引，修改背景、文本颜色，并给变量赋值
if (indexPath.item==self.selectItemIndex) {
cell.contentView.backgroundColor = K_CC_COLOR_STRING(@"#343E79");
cell.lblTitle.textColor = K_CC_COLOR_STRING(@"#FFFFFF");
self.rejectreason=codevalue;
}else{
cell.contentView.backgroundColor = K_CC_COLOR_STRING(@"#F5F5F5");
cell.lblTitle.textColor = K_CC_COLOR_STRING(@"#333333");
}
cell.title = codevalue;
return cell;
}
//初始化数组数据
-(void)loadData{
if (!_data) {
NSMutableArray *data = [[NSMutableArray alloc] init];
//JQCollectionViewItemsVerticalAlignment verticalAlignments[] = {JQCollectionViewItemsVerticalAlignmentCenter, JQCollectionViewItemsVerticalAlignmentTop, JQCollectionViewItemsVerticalAlignmentBottom};
//设置每一项水平从左到右对齐
JQCollectionViewItemsHorizontalAlignment horizontalAlignments[] = {JQCollectionViewItemsHorizontalAlignmentCenter, JQCollectionViewItemsHorizontalAlignmentLeft, JQCollectionViewItemsHorizontalAlignmentRight, JQCollectionViewItemsHorizontalAlignmentFlow};
//JQCollectionViewItemsDirection directions[] = {JQCollectionViewItemsDirectionLTR, JQCollectionViewItemsDirectionRTL};
for (int i = 0; i < 1; i++) {
JQCollectionViewItemsHorizontalAlignment horizontal = horizontalAlignments[1];
NSInteger count = self.dataAddressList.count;
NSMutableArray *items = [[NSMutableArray alloc] init];
for (int j = 0; j < count; j++) {
UIColor *color = K_CC_COLOR_STRING(@"#F5F5F5");
NSDictionary *dic=[self.dataAddressList objectAtIndex:j];
NSString *codevalue=[dic objectForKey:@"codevalue"];
//宽度自适应
CGFloat labelW = [CCCommonAPI getWidthWithString:codevalue font:K_CC_FONT(14) constraintSize:CGSizeMake(MAXFLOAT, 40.0f)];
//此处为了给每一个项留一定的空白
CGFloat width = labelW+10;
CGSize size = CGSizeMake(width, 40);
CCHighSeasPoolReturnItemModel *item = [[CCHighSeasPoolReturnItemModel alloc] initWithColor:color size:size index:j];
item.itemtitle=codevalue;
[items addObject:item];
}
CCHighSeasPoolReturnModel *section = [[CCHighSeasPoolReturnModel alloc] init];
// section.verticalAlignment = vertical;
section.horizontalAlignment = horizontal;
//section.direction = JQCollectionViewItemsDirectionLTR;
section.items = items;
[data addObject:section];
// }
// }
_data = data;
}
}
}