Question

好的，我的情况是这样的。

首先，我所做的是通过地址簿获取联系人姓名，并显示名称，名称可能包含英语，非英语（中文，日语等），符号等。我现在面临的问题是非英语字符不按组分组，假设'X'属于组'G'，但它显示在下一组中。如下所示，该中文单词应属于'G'组。

sample

我在代码中看到一个条件是当它不在A - Z内时，它会将它们分组在'＃'组中。代码不是由我编写的，我目前正在修复bug。然后这个索引的东西是完全自定义的，所以......

有没有办法知道这个角色是符号还是非英文字符？！或者有没有办法我们可以通过组来获取地址簿中的联系人???

下面的代码是检查字符组合的部分。

name = [name stringByTrimmingCharactersInSet:[NSCharacterSet punctuationCharacterSet]];
selectCharacter = [[name uppercaseString] characterAtIndex:0];

if( (selectCharacter > 'Z') || (selectCharacter < 'A')){
                        selectCharacter = '#';
                }

        if( currentCharacter != selectCharacter ){
            // Store Old
            if( currentCharacter > 0 ){
                NSMutableArray * data =  [allPeopleSectionIndex lastObject];
                [data insertObject:[NSNumber numberWithInt:currentCount] atIndex:2];
            }

            // Setup for New
                        currentCharacter = selectCharacter;
            currentCount = 1;
            currentCharacterIndex ++;

            // 0: char, 1: section start, 2: count
            NSMutableArray * data = [[NSMutableArray alloc] initWithObjects:
                                     [NSString stringWithFormat:@"%c", currentCharacter], 
                                     [NSNumber numberWithInt:i], 
                                     [NSNumber numberWithInt:0],
                                     nil];
            [allPeopleSectionIndex addObject:data];
            [data release];

        } else {
            currentCount++;
}

Answer 1

我找到了一种阅读汉字的方法，并根据A-Z字母组织它们。这是我从这个site（中文网站）找到的文件。我将包含您需要的代码。请注意，我不确定这是否正确。

我说我把这个课称为拼音。

<强> Pinyin.h

@interface Pinyin : NSObject {

}

- (char) pinyinFirstLetter:(unsigned short) hanzi;

@end

<强> Pinyin.m

#import "Pinyin.h"

#define HANZI_START 19968  
#define HANZI_COUNT 20902

@implementation Pinyin
static char firstLetterArray[HANZI_COUNT] = "ydkqsxnwzssxjbymgcczqpssqbycdscdqldylybssjgyqzjjfgcclzznwdwzjljpfyynnjjtmynzwzhflzppqhgccyynmjqyxxgd"
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"xy";

- (char) pinyinFirstLetter:(unsigned short) hanzi{
    int index = hanzi - HANZI_START;
    if (index >= 0 && index <= HANZI_COUNT) {
        return firstLetterArray[index];
    }else{
        //anything that not recognize will return as a '#'
        return '#';
    }
}
@end

此方法将根据英文字母返回中文字符（但有些日文汉字会识别为中文但不正确）。

使用此方法（示例）：

char selectedChar = 0;
if ([name canBeConvertedToEncoding: NSASCIIStringEncoding]) {//if english
  selectedChar = [[name uppercaseString] characterAtIndex:0];
}else { //if not english
  Pinyin *pinyin = [[Pinyin alloc]init];

  //return the english alphabet
  selectedChar = [pinyin pinyinFirstLetter: /* Pass in the character here */];

  [pinyin release];
}

如果您有任何方法，想法或建议，请告诉我。我仍然需要一种能够读取日语并将其组织成组的方法。

归功于原作者。

Answer 2

总是使用rangeOfComposedCharacterSequenceAtIndex:来确保处理由多个unichar序列组成的单个字符是个好主意（这很可能是你对非英文字符的错误分组背后的原因），并使用stringByFoldingWithOptions:locale:确保将重音字符缩减为适当的公共基本形式（请注意折叠字符为小写）。

因此，请按以下方式形成您的selectCharacter： -

NSRange range = [name rangeOfComposedCharacterSequenceAtIndex: 0];
NSString* initialChar = [name substringWithRange: range];
NSString* initialCharFolded = 
    [initialChar
        stringByFoldingWithOptions: 
            NSCaseInsensitiveSearch
          + NSDiacriticInsensitiveSearch
          + NSWidthInsensitiveSearch
        locale: [NSLocale currentLocale]];
if ([initialCharFolded length] == 1)
    selectCharacter = [[initialCharFolded uppercaseString] characterAtIndex: 0];
else
    selectCharacter = '#';

if (selectCharacter > 'Z' || selectCharacter < 'A')
    selectCharacter = '#';

HTH

Answer 3

正确的方法是使用 UILocalizedIndexedCollation 类，即使您没有将其用作表格视图的索引。

NSInteger index = [[UILocalizedIndexedCollation currentCollation] sectionForObject:chineseLetter collationStringSelector:@selector(self)];
NSString *englishLetter = [[UILocalizedIndexedCollation currentCollation] sectionIndexTitles] objectAtIndex:index];

请注意，如果您计划稍后将其用作索引，则不应使用 currentCollation 共享实例。

Answer 4

我在为音乐库建立索引时遇到了这个问题，音乐库非常混乱。所以这里提出了：按字母顺序排序库（例如，使用NSSortDescriptor），抓取第一个字母，然后使用一些固定的步长= min（步骤，字母计数）对指标进行分组。

像这样，步骤= 5：

[a a a a a a a a a a b b b c d e g g g h i i i i i i i k l m]
[a                   b         e         i             k

将非英语字符作为英文字符

4 个答案: