iOS 之按照首字母排序并赋值给相应地Section中

首先导入两个首字母的文件

////.c中文件

/*

 *  pinyin.c

 *  Chinese Pinyin First Letter

 *

 *  Created by George on 4/21/10.

 *  Copyright 2010 RED/SAFI. All rights reserved.

 *

 */

#define HANZI_START 19968

#define HANZI_COUNT 20902

static char firstLetterArray[HANZI_COUNT] = 

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"xy";

char pinyinFirstLetter(unsignedshort hanzi)

{

int index = hanzi -HANZI_START;

if (index >=0 && index <=HANZI_COUNT)

{

returnfirstLetterArray[index];

}

else

{

return hanzi;

}

}

//////////.h

/*

 *  pinyin.h

 *  Chinese Pinyin First Letter

 *

 *  Created by George on 4/21/10.

 *  Copyright 2010 RED/SAFI. All rights reserved.

 *

 */

/*

 * // Example

 *

 * #import "pinyin.h"

 *

 * NSString *hanyu = @"中国共产党万岁！";

 * for (int i = 0; i < [hanyu length]; i++)

 * {

 *     printf("%c", pinyinFirstLetter([hanyu characterAtIndex:i]));

 * }

 *

 */

#define ALPHA @"ABCDEFGHIJKLMNOPQRSTUVWXYZ#"

char pinyinFirstLetter(unsignedshort hanzi);

///////////之后创建数据模型,将获得的表格的头和cell中地值存入数据模型中对应的变量  (文件名为:  ChineseString ) 

//

//  ChineseString.h

//  ChineseSort

//

//  Created by Bill on 12-8-3.

//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import <Foundation/Foundation.h>

@interface ChineseString :NSObject

@property(nonatomic,copy)NSString *string;

@property(nonatomic,copy)NSString *pinYin;

@end

///.m文件中

//

//  ChineseString.m

//  ChineseSort

//

//  Created by Bill on 12-8-3.

//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import "ChineseString.h"

@implementation ChineseString

@synthesize string =_string;

@synthesize pinYin =_pinYin;

- (id)init {

    if (self = [superinit]) {

        

    }

    

    returnself;

}

@end

//然后就是主题了

//创建tableView,填充数据

创建一个ViewControllor类,.h文件中

//

//  ViewController.h

//  TestNameSortAndSplit

//

//  Created by ethan on 13-4-27.

//  Copyright (c) 2013年 ethan. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface ViewController :UIViewController <UITableViewDataSource,UITableViewDelegate> {

    UITableView *_tableView;

}

@property (nonatomic,retain)NSMutableArray *dataArr;

@property (nonatomic,retain)NSMutableArray *sortedArrForArrays;

@property (nonatomic,retain)NSMutableArray *sectionHeadsKeys;

@end

///.m文件中

//

//  ViewController.m

//  TestNameSortAndSplit

//

//  Created by ethan on 13-4-27.

//  Copyright (c) 2013年 ethan. All rights reserved.

//

#import "ViewController.h"

#import "pinyin.h"

#import "ChineseString.h"

@interfaceViewController ()

@end

@implementation ViewController

@synthesize dataArr =_dataArr;

@synthesize sortedArrForArrays =_sortedArrForArrays;

@synthesize sectionHeadsKeys =_sectionHeadsKeys;

- (void)viewDidLoad

{

    [superviewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

    

    //获得数据

    [selfgetSectionAndCellData];

    //创建tableView

    [selfcreateTableView];

    

}

- (void)didReceiveMemoryWarning

{

    [superdidReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

- (void)dealloc {

    [_dataArr release];

    [_sortedArrForArraysrelease];

    [_sectionHeadsKeysrelease];

    [_tableViewrelease];

    

    [super dealloc];

}

#pragma mark -

#pragma mark create method    

- (void)getSectionAndCellData {

    //init

    //创建要显示的数据

    _dataArr = [[NSMutableArrayalloc]init];

    _sortedArrForArrays = [[NSMutableArrayalloc]init];

    _sectionHeadsKeys = [[NSMutableArrayalloc]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:@"阿紫"];

    [_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"];

    [_dataArraddObject:@"DavidSmall"];

    [_dataArraddObject:@"DavidBig"];

    [_dataArr addObject:@"James"];

    [_dataArraddObject:@"Kobe Brand"];

    [_dataArraddObject:@"Kobe Crand"];

    

    //引用getChineseStringArr,并传入参数,最后将值赋给sortedArrForArrays

    self.sortedArrForArrays = [selfgetChineseStringArr:_dataArr];

}

- (void)createTableView

{

    _tableView = [[UITableViewalloc]initWithFrame:self.view.framestyle:UITableViewStylePlain];

    

    _tableView.dataSource =self;

    _tableView.delegate =self;

    

    [self.viewaddSubview:_tableView];

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

    return  [[self.sortedArrForArraysobjectAtIndex:section]count];

}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

    return [self.sortedArrForArrayscount];

}

//为section添加标题

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

{

    return [_sectionHeadsKeysobjectAtIndex:section];

}

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView

{

    returnself.sectionHeadsKeys;

}

//创建tableView的cell

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

    NSString *cellId =@"CellId";

    UITableViewCell *cell = [tableViewdequeueReusableCellWithIdentifier:cellId];

    if (cell ==nil) {

        cell = [[[UITableViewCellalloc]initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:cellId]autorelease];

    }

    

    //sortedArrForArrays存放cell值的动态数组,首先将数组中得值赋给一个静态数组

    if ([self.sortedArrForArrayscount] > indexPath.section)

    {

        NSArray *arr = [self.sortedArrForArraysobjectAtIndex:indexPath.section];

        if ([arrcount] > indexPath.row)

        {

            //之后,将数组的元素取出,赋值给数据模型

            ChineseString *str = (ChineseString *) [arrobjectAtIndex:indexPath.row];

            //给cell赋给相应地值,从数据模型处获得

            cell.textLabel.text = str.string;

        }

        else {

            NSLog(@"arr out of range");

        }

    }

    else

    {

        NSLog(@"sortedArrForArrays out of range");

    }

        

    return cell;

}

//固定代码,每次使用只需要将数据模型替换就好,这个方法是获取首字母,将填充给cell的值按照首字母排序

- (NSMutableArray *)getChineseStringArr:(NSMutableArray *)arrToSort

{

    //创建一个临时的变动数组

    NSMutableArray *chineseStringsArray = [NSMutableArrayarray];

    

    for(int i =0; i < [arrToSortcount]; i++)

    {

        //创建一个临时的数据模型对象

        ChineseString *chineseString=[[ChineseStringalloc]init];

        //给模型赋值

        chineseString.string=[NSStringstringWithString:[arrToSortobjectAtIndex:i]];

        

        if(chineseString.string==nil)

        {

            chineseString.string=@"";

        }

        

        if(![chineseString.stringisEqualToString:@""])

        {

            //join(链接) the pinYin (letter字母) 链接到首字母

            NSString *pinYinResult = [NSStringstring];

            //按照数据模型中row的个数循环

            for(int j =0;j < chineseString.string.length; j++)

            {

                NSString *singlePinyinLetter = [[NSStringstringWithFormat:@"%c",

                                                pinyinFirstLetter([chineseString.stringcharacterAtIndex:j])]uppercaseString];

                pinYinResult = [pinYinResultstringByAppendingString:singlePinyinLetter];

            }

            chineseString.pinYin = pinYinResult;

        } else {

            chineseString.pinYin =@"";

        }

        [chineseStringsArray addObject:chineseString];

       

    }

    

    //sort(排序) the ChineseStringArr by pinYin(首字母) 

    NSArray *sortDescriptors = [NSArrayarrayWithObject:[NSSortDescriptorsortDescriptorWithKey:@"pinYin"ascending:YES]];

    [chineseStringsArray sortUsingDescriptors:sortDescriptors];

    

    

    NSMutableArray *arrayForArrays = [NSMutableArrayarray];

    BOOL checkValueAtIndex=NO; //flag to check

    

    NSMutableArray *TempArrForGrouping =nil;

    for(int index =0; index < [chineseStringsArraycount]; index++)

    {

        ChineseString *chineseStr = (ChineseString *)[chineseStringsArrayobjectAtIndex:index];

        NSMutableString *strchar= [NSMutableStringstringWithString:chineseStr.pinYin];

        NSString *sr= [strcharsubstringToIndex:1];

        

        //sr containing here the first character of each string  (这里包含的每个字符串的第一个字符)

        NSLog(@"%@",sr);        

        

        //here I'm checking whether the character already in the selection header keys or not  (检查字符是否已经选择头键)

        if(![_sectionHeadsKeyscontainsObject:[sruppercaseString]])

        {

            [_sectionHeadsKeysaddObject:[sruppercaseString]];

            TempArrForGrouping = [[[NSMutableArrayalloc]initWithObjects:nil]autorelease];

            checkValueAtIndex = NO;

        }

        if([_sectionHeadsKeyscontainsObject:[sruppercaseString]])

        {

           [TempArrForGrouping addObject:[chineseStringsArray objectAtIndex:index]];

            if(checkValueAtIndex ==NO)

            {

                [arrayForArrays addObject:TempArrForGrouping];

                checkValueAtIndex = YES;

            }

        }

    }

    return arrayForArrays;

}

@end

//完成