数据格式
"data" : [
{
"brandId" : "13",
"pinyin" : "A",
"brandName" : "奥迪"
},
{
"brandId" : "44",
"pinyin" : "A",
"brandName" : "阿斯顿·马丁"
},
{
"brandId" : "45",
"pinyin" : "A",
"brandName" : "奥克斯"
}
]
Model对象
@interface LTBrandItem : NSObject
@property (assign, nonatomic) NSInteger brandId;
@property (copy, nonatomic) NSString *pinyin;
@property (copy, nonatomic) NSString *brandName;
@end
@interface LTBrandCellModel : NSObject
@property (copy, nonatomic) NSString *letter;
@property (strong, nonatomic) NSMutableArray<LTBrandItem*> *list;
@end
排序代码
NSArray *list = response.data;
NSMutableArray *sections = [NSMutableArray array];
for (NSDictionary *dict in list) {
LTBrandItem *item = [LTBrandItem mj_objectWithKeyValues:dict];
BOOL hasSection = NO; // 是否已经有section
for (LTBrandCellModel *section in sections) {
if ([section.letter isEqualToString:item.pinyin]) {
[section.list addObject:item];
hasSection = YES;
break;
}
}
if (!hasSection) {
LTBrandCellModel *section = [LTBrandCellModel new];
section.letter = item.pinyin;
section.list = [NSMutableArray array];
[section.list addObject:item];
[sections addObject:section];
}
}
[sections sortUsingComparator:^NSComparisonResult(LTBrandItem *obj1, LTBrandItem *obj2) {
return obj1.pinyin > obj2.pinyin;
}];
