iOS實現聯絡人按照首字母進行排序
聯絡人功能的需求一般都會有按照首字母排序,並且會要求同一個姓的就要連續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,它不需要將中文轉為拼音,但是有一個缺點就是如果姓氏存在多音字就無法區分(例如:姓增,它會被分配到C (ceng)組)
下面貼程式碼:
1,建一個類進行管理LinkManSort
.m檔案
NSString *const CYPinyinGroupResultArray = @”CYPinyinGroupResultArray”;
NSString *const CYPinyinGroupCharArray = @”CYPinyinGroupCharArray”;
@implementation LinkManSort
// 按首字母分組排序陣列
+(NSDictionary )sortObjectsAccordingToInitialWith:(NSArray )willSortArr SortKey:(NSString *)sortkey {
// 初始化UILocalizedIndexedCollation UILocalizedIndexedCollation *collation = [UILocalizedIndexedCollation currentCollation]; //得出collation索引的數量,這裡是27個(26個字母和1個#) NSInteger sectionTitlesCount = [[collation sectionTitles] count]; //初始化一個數組newSectionsArray用來存放最終的資料,我們最終要得到的資料模型應該形如@[@[以A開頭的資料陣列], @[以B開頭的資料陣列], @[以C開頭的資料陣列], ... @[以#(其它)開頭的資料陣列]] NSMutableArray *newSectionsArray = [[NSMutableArray alloc] initWithCapacity:sectionTitlesCount]; //初始化27個空陣列加入newSectionsArray for (NSInteger index = 0; index < sectionTitlesCount; index++) { NSMutableArray *array = [[NSMutableArray alloc] init]; [newSectionsArray addObject:array]; } NSLog(@"newSectionsArray %@ %@",newSectionsArray,collation.sectionTitles); NSMutableArray *firstChar = [NSMutableArray arrayWithCapacity:10]; //將每個名字分到某個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個數組中去 NSMutableArray *sectionNames = newSectionsArray[sectionNumber]; [sectionNames addObject:Model]; //拿出每名字的首字母 NSString * str= collation.sectionTitles[sectionNumber]; [firstChar addObject:str]; NSLog(@"sectionNumbersectionNumber %ld %@",sectionNumber,str); } //返回首字母排好序的資料 NSArray *firstCharResult = [self SortFirstChar:firstChar]; NSLog(@"firstCharResult== %@",firstCharResult); //對每個section中的陣列按照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; } //刪除空的陣列 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{
//陣列去重複 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”#“放在最後一位 NSMutableArray *resultkArrSort2 = [[NSMutableArray alloc]initWithArray:resultkArrSort1]; if ([resultkArrSort2 containsObject:@"#"]) { [resultkArrSort2 removeObject:@"#"]; [resultkArrSort2 addObject:@"#"]; } return resultkArrSort2;
}
.h檔案
先引入框架UIKit/UIKit.h
/**
* 獲取model陣列
*/
UIKIT_EXTERN NSString *const CYPinyinGroupResultArray;
/**
* 獲取所包函字母的陣列
*/
UIKIT_EXTERN NSString *const CYPinyinGroupCharArray;
@interface LinkManSort : NSObject
+(NSDictionary )sortObjectsAccordingToInitialWith:(NSArray )willSortArr SortKey:(NSString *)sortkey ;
在VC裡面呼叫
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”:@”陳恆”},@{@”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陣列
NSArray *resultarr2 = dcit[CYPinyinGroupCharArray];//排好順序的首字母陣列
完成