聯(lián)系人功能的需求一般都會(huì)有按照首字母排序，并且會(huì)要求同一個(gè)姓的就要連續(xù)起來中間不能穿插別的姓，百度了一下看到UILocalizedIndexedCollation給我們提供了很方便的排序方法，它不需要將中文轉(zhuǎn)為拼音，但是有一個(gè)缺點(diǎn)就是如果姓氏存在多音字就無法區(qū)分（例如：姓增，它會(huì)被分配到C （ceng）組）
下面貼代碼：
1，建一個(gè)類進(jìn)行管理LinkManSort
.m文件
NSString *const CYPinyinGroupResultArray = @”CYPinyinGroupResultArray”;
NSString *const CYPinyinGroupCharArray = @”CYPinyinGroupCharArray”;
@implementation LinkManSort
// 按首字母分組排序數(shù)組 +(NSDictionary )sortObjectsAccordingToInitialWith:(NSArray )willSortArr SortKey:(NSString *)sortkey {
// 初始化UILocalizedIndexedCollationUILocalizedIndexedCollation *collation = [UILocalizedIndexedCollation currentCollation];//得出collation索引的數(shù)量，這里是27個(gè)（26個(gè)字母和1個(gè)#）NSInteger sectionTitlesCount = [[collation sectionTitles] count];//初始化一個(gè)數(shù)組newSectionsArray用來存放最終的數(shù)據(jù)，我們最終要得到的數(shù)據(jù)模型應(yīng)該形如@[@[以A開頭的數(shù)據(jù)數(shù)組], @[以B開頭的數(shù)據(jù)數(shù)組], @[以C開頭的數(shù)據(jù)數(shù)組], ... @[以#(其它)開頭的數(shù)據(jù)數(shù)組]]NSMutableArray *newSectionsArray = [[NSMutableArray alloc] initWithCapacity:sectionTitlesCount];//初始化27個(gè)空數(shù)組加入newSectionsArrayfor (NSInteger index = 0; index < sectionTitlesCount; index++) { NSMutableArray *array = [[NSMutableArray alloc] init]; [newSectionsArray addObject:array];}NSLog(@"newSectionsArray %@ %@",newSectionsArray,collation.sectionTitles);NSMutableArray *firstChar = [NSMutableArray arrayWithCapacity:10];//將每個(gè)名字分到某個(gè)section下for (id Model in willSortArr) { //獲取name屬性的值所在的位置，比如"林丹"，首字母是L，在A~Z中排第11（第一位是0），sectionNumber就為11 NSInteger sectionNumber = [collation sectionForObject:Model collationStringSelector:NSSelectorFromString(sortkey)]; //把name為“林丹”的p加入newSectionsArray中的第11個(gè)數(shù)組中去 NSMutableArray *sectionNames = newSectionsArray[sectionNumber]; [sectionNames addObject:Model]; NSString * str= collation.sectionTitles[sectionNumber]; [firstChar addObject:str]; NSLog(@"sectionNumbersectionNumber %ld %@",sectionNumber,str);}NSArray *firstCharResult = [self SortFirstChar:firstChar];NSLog(@"firstCharResult== %@",firstCharResult);//對(duì)每個(gè)section中的數(shù)組按照name屬性排序for (NSInteger index = 0; index < sectionTitlesCount; index++) { NSMutableArray *personArrayForSection = newSectionsArray[index]; NSArray *sortedPersonArrayForSection = [collation sortedArrayFromArray:personArrayForSection collationStringSelector:@selector(name)]; newSectionsArray[index] = sortedPersonArrayForSection;}//刪除空的數(shù)組NSMutableArray *finalArr = [NSMutableArray new];for (NSInteger index = 0; index < sectionTitlesCount; index++) { if (((NSMutableArray *)(newSectionsArray[index])).count != 0) { [finalArr addObject:newSectionsArray[index]]; }}return @{CYPinyinGroupResultArray:finalArr, CYPinyinGroupCharArray:firstCharResult};}
+(NSArray )SortFirstChar:(NSArray )firstChararry{
//數(shù)組去重復(fù)NSMutableArray *noRepeat = [[NSMutableArray alloc]initWithCapacity:8];NSMutableSet *set = [[NSMutableSet alloc]initWithArray:firstChararry];[set enumerateObjectsUsingBlock:^(id obj , BOOL *stop){ [noRepeat addObject:obj];}];//字母排序NSArray *resultkArrSort1 = [noRepeat sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) { return [obj1 compare:obj2 options:NSNumericSearch];}];//把”#“放在最后一位NSMutableArray *resultkArrSort2 = [[NSMutableArray alloc]initWithArray:resultkArrSort1];if ([resultkArrSort2 containsObject:@"#"]) { [resultkArrSort2 removeObject:@"#"]; [resultkArrSort2 addObject:@"#"];}return resultkArrSort2;}
.h文件
先引入框架UIKit/UIKit.h /** * 獲取model數(shù)組 */ UIKIT_EXTERN NSString *const CYPinyinGroupResultArray;
/** * 獲取所包函字母的數(shù)組 */ UIKIT_EXTERN NSString *const CYPinyinGroupCharArray; @interface LinkManSort : NSObject +(NSDictionary )sortObjectsAccordingToInitialWith:(NSArray )willSortArr SortKey:(NSString *)sortkey ;
在VC里面調(diào)用
NSArray *arr = @[@{@”name”:@”李立”},@{@”name”:@” 李安”},@{@”name”:@”劉星”},@{@”name”:@”劉小米”},@{@”name”:@”蘇音”},@{@”name”:@”韋佳佳”},@{@”name”:@”李華”},@{@”name”:@”楊波”},@{@”name”:@”陳恒”},@{@”name”:@”黃呀呀”},@{@”name”:@”邱珀”},@{@”name”:@”李克”},@{@”name”:@”123456”},@{@”name”:@”韋立林”},@{@”name”:@”陳瑤”}];
NSMutableArray *marr = [NSMutableArray arrayWithCapacity:10];for (NSDictionary *dict in arr) { PersonModel *model =[[PersonModel alloc]init];// dict[@"name"]; model.name =dict[@"name"]; [marr addObject:model];}NSDictionary *dcit= [LinkManSort sortObjectsAccordingToInitialWith:marr SortKey:@”name”];
NSArray *resultarr1 = dcit[CYPinyinGroupResultArray];//排好順序的PersonModel數(shù)組NSArray *resultarr2 = dcit[CYPinyinGroupCharArray];//排好順序的首字母數(shù)組
完成啦！
以上這篇iOS實(shí)現(xiàn)聯(lián)系人按照首字母進(jìn)行排序的實(shí)例就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持武林網(wǎng)。
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