一、搜框中輸入關鍵字的事件響應

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{

    NSLog(@"輸入的關鍵字是---%@---%lu",searchText,(unsigned long)searchText.length);

    //需要事先清空存放搜尋結果的陣列
    [self.resultArray removeAllObjects];

    //加個多執行緒，否則數量量大的時候，有明顯的卡頓現象
    //這裡最好放在資料庫裡面再進行搜尋，效率會更快一些
    dispatch_queue_t
 
 globalQueue = dispatch_get_global_queue(0, 0);
    dispatch_async(globalQueue, ^{
        if (searchText!=nil && searchText.length>0) {
            //遍歷需要搜尋的所有內容，其中self.dataArray為存放總資料的陣列
            for (DataModel *model in self.dataArray) {
                NSString *tempStr = model.content;
                //----------->把所有的搜尋結果轉成成拼音
 

                NSString *pinyin = [self transformToPinyin:tempStr];
                NSLog(@"pinyin--%@",pinyin);

                if ([pinyin rangeOfString:searchText options:NSCaseInsensitiveSearch].length >0 ) {
                    //把搜尋結果存放self.resultArray陣列
                    [self.resultArray
 
 addObject:model];
                }
            } 
        }else{
            self.resultArray = [NSMutableArray arrayWithArray:self.dataArray];
        }
        //回到主執行緒
        dispatch_async(dispatch_get_main_queue(), ^{
            [_tableView reloadData];
        });
    });
}

二、獲取漢字轉成拼音字串 通訊錄模糊搜尋 支援拼音檢索 首字母 全拼 漢字 搜尋

- (NSString *)transformToPinyin:(NSString *)aString
{
    //轉成了可變字串
    NSMutableString *str = [NSMutableString stringWithString:aString];
    CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformMandarinLatin,NO);

    //再轉換為不帶聲調的拼音
    CFStringTransform((CFMutableStringRef)str,NULL, kCFStringTransformStripDiacritics,NO);
    NSArray *pinyinArray = [str componentsSeparatedByString:@" "];
    NSMutableString *allString = [NSMutableString new];

    int count = 0;

    for (int  i = 0; i < pinyinArray.count; i++)
    {
        for(int i = 0; i < pinyinArray.count;i++)
        {
            if (i == count) {
                [allString appendString:@"#"];
                //區分第幾個字母
            }
            [allString appendFormat:@"%@",pinyinArray[i]];
        }
        [allString appendString:@","];
        count ++;
    }
    NSMutableString *initialStr = [NSMutableString new];
    //拼音首字母
    for (NSString *s in pinyinArray)
    {
        if (s.length > 0)
        {
            [initialStr appendString:  [s substringToIndex:1]];
        }
    }
    [allString appendFormat:@"#%@",initialStr];
    [allString appendFormat:@",#%@",aString];
    return allString;
}