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关键代码，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:@"黄蓉"];
[_dataArr addObject:@"杨过"];
[_dataArr addObject:@"苗若兰"];
[_dataArr addObject:@"令狐冲"];
[_dataArr addObject:@"小龙女"];
[_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:@"张翠山"];
[_dataArr addObject:@"张无忌"];
[_dataArr addObject:@"青青"];
[_dataArr addObject:@"袁冠南"];
[_dataArr addObject:@"萧中慧"];
[_dataArr addObject:@"袁承志"];
[_dataArr addObject:@"乔峰"];
[_dataArr addObject:@"王语嫣"];
[_dataArr addObject:@"段玉"];
[_dataArr addObject:@"虚竹"];
[_dataArr addObject:@"苏星河"];
[_dataArr addObject:@"丁春秋"];
[_dataArr addObject:@"庄聚贤"];
[_dataArr addObject:@"azi"];
[_dataArr addObject:@"阿朱"];
[_dataArr addObject:@"阿碧"];
[_dataArr addObject:@"鸠魔智"];
[_dataArr addObject:@"萧远山"];
[_dataArr addObject:@"慕容复"];
[_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 pinYin
NSString *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 check
NSMutableArray *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 string
if(![_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
