關(guān)鍵代碼，demo在最后

// ViewController.m // TestNameSortAndSplit // // Created by ethan on 17-6-14. // Copyright (c) 2017年 jay. All rights reserved. //#import "ViewController.h" #import "pinyin.h" #import "ChineseString.h"@interface ViewController ()@end@implementation ViewController@synthesize dataArr = _dataArr; @synthesize sortedArrForArrays = _sortedArrForArrays; @synthesize sectionHeadsKeys = _sectionHeadsKeys;- (void)viewDidLoad {[super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.[self initData];[self createTableView]; }- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated. }- (void)dealloc {[_dataArr release];[_sortedArrForArrays release];[_sectionHeadsKeys release];[_tableView release];[super dealloc]; }#pragma mark - #pragma mark create method- (void)initData {//init_dataArr = [[NSMutableArray alloc] init];_sortedArrForArrays = [[NSMutableArray alloc] init];_sectionHeadsKeys = [[NSMutableArray alloc] init]; //initialize a array to hold keys like A,B,C ...//add test data[_dataArr addObject:@"郭靖"];[_dataArr addObject:@"黃蓉"];[_dataArr addObject:@"楊過(guò)"];[_dataArr addObject:@"苗若蘭"];[_dataArr addObject:@"令狐沖"];[_dataArr addObject:@"小龍女"];[_dataArr addObject:@"胡斐"];[_dataArr addObject:@"水笙"];[_dataArr addObject:@"任盈盈"];[_dataArr addObject:@"白琇"];[_dataArr addObject:@"狄云"];[_dataArr addObject:@"石破天"];[_dataArr addObject:@"殷素素"];[_dataArr addObject:@"張翠山"];[_dataArr addObject:@"張無(wú)忌"];[_dataArr addObject:@"青青"];[_dataArr addObject:@"袁冠南"];[_dataArr addObject:@"蕭中慧"];[_dataArr addObject:@"袁承志"];[_dataArr addObject:@"喬峰"];[_dataArr addObject:@"王語(yǔ)嫣"];[_dataArr addObject:@"段玉"];[_dataArr addObject:@"虛竹"];[_dataArr addObject:@"蘇星河"];[_dataArr addObject:@"丁春秋"];[_dataArr addObject:@"莊聚賢"];[_dataArr addObject:@"azi"];[_dataArr addObject:@"阿朱"];[_dataArr addObject:@"阿碧"];[_dataArr addObject:@"鳩魔智"];[_dataArr addObject:@"蕭遠(yuǎn)山"];[_dataArr addObject:@"慕容復(fù)"];[_dataArr addObject:@"慕容博"];[_dataArr addObject:@"Jim"];[_dataArr addObject:@"Lily"];[_dataArr addObject:@"Ethan"];[_dataArr addObject:@"Green小"];[_dataArr addObject:@"Green大"];[_dataArr addObject:@"DavidSmall"];[_dataArr addObject:@"DavidBig"];[_dataArr addObject:@"James"];[_dataArr addObject:@"Kobe Brand"];[_dataArr addObject:@"Kobe Crand"];self.sortedArrForArrays = [self getChineseStringArr:_dataArr]; }- (void)createTableView {_tableView = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain];_tableView.dataSource = self;_tableView.delegate = self;[self.view addSubview:_tableView]; }- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return [[self.sortedArrForArrays objectAtIndex:section] count]; }- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {return [self.sortedArrForArrays count]; }- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {return [_sectionHeadsKeys objectAtIndex:section]; }- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {return self.sectionHeadsKeys; }- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {NSString *cellId = @"CellId";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellId];if (cell == nil) {cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellId] autorelease];}if ([self.sortedArrForArrays count] > indexPath.section) {NSArray *arr = [self.sortedArrForArrays objectAtIndex:indexPath.section];if ([arr count] > indexPath.row) {ChineseString *str = (ChineseString *) [arr objectAtIndex:indexPath.row];cell.textLabel.text = str.string;} else {NSLog(@"arr out of range");}} else {NSLog(@"sortedArrForArrays out of range");}return cell; }- (NSMutableArray *)getChineseStringArr:(NSMutableArray *)arrToSort {NSMutableArray *chineseStringsArray = [NSMutableArray array];for(int i = 0; i < [arrToSort count]; i++) {ChineseString *chineseString=[[ChineseString alloc]init];chineseString.string=[NSString stringWithString:[arrToSort objectAtIndex:i]];if(chineseString.string==nil){chineseString.string=@"";}if(![chineseString.string isEqualToString:@""]){//join the pinYinNSString *pinYinResult = [NSString string];for(int j = 0;j < chineseString.string.length; j++) {NSString *singlePinyinLetter = [[NSString stringWithFormat:@"%c",pinyinFirstLetter([chineseString.string characterAtIndex:j])]uppercaseString];pinYinResult = [pinYinResult stringByAppendingString:singlePinyinLetter];}chineseString.pinYin = pinYinResult;} else {chineseString.pinYin = @"";}[chineseStringsArray addObject:chineseString];[chineseString release];}//sort the ChineseStringArr by pinYin NSArray *sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"pinYin" ascending:YES]];[chineseStringsArray sortUsingDescriptors:sortDescriptors];NSMutableArray *arrayForArrays = [NSMutableArray array];BOOL checkValueAtIndex= NO; //flag to checkNSMutableArray *TempArrForGrouping = nil;for(int index = 0; index < [chineseStringsArray count]; index++){ChineseString *chineseStr = (ChineseString *)[chineseStringsArray objectAtIndex:index];NSMutableString *strchar= [NSMutableString stringWithString:chineseStr.pinYin];NSString *sr= [strchar substringToIndex:1];NSLog(@"%@",sr); //sr containing here the first character of each stringif(![_sectionHeadsKeys containsObject:[sr uppercaseString]])//here I'm checking whether the character already in the selection header keys or not{[_sectionHeadsKeys addObject:[sr uppercaseString]];TempArrForGrouping = [[[NSMutableArray alloc] initWithObjects:nil] autorelease];checkValueAtIndex = NO;}if([_sectionHeadsKeys containsObject:[sr uppercaseString]]){[TempArrForGrouping addObject:[chineseStringsArray objectAtIndex:index]];if(checkValueAtIndex == NO){[arrayForArrays addObject:TempArrForGrouping];checkValueAtIndex = YES;}}}return arrayForArrays; }@end 復(fù)制代碼

Demo下載

總結(jié)

以上是生活随笔為你收集整理的iOS 仿通讯录索引的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺(jué)得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。