- (NSString * ) chineseToPinyin:(NSString *) chinese{
CFStringRef hanzi = (__bridge CFStringRef)(chinese);
CFMutableStringRef string = CFStringCreateMutableCopy(NULL, , hanzi);
// Boolean CFStringTransform(CFMutableStringRef string, CFRange *range, CFStringRef transform, Boolean reverse);
//string 为要转换的字符串
// range 要转换的范围,NULL 则为全部
//transform 要进行怎么样的转换 //kCFStringTransformMandarinLatin 将汉字转拼音
//reverse 是否支持逆向转换
CFStringTransform(string, NULL, kCFStringTransformMandarinLatin, NO);
//kCFStringTransformStripDiacritics去掉声调
CFStringTransform(string, NULL, kCFStringTransformStripDiacritics, NO);
NSString * pinyin = (NSString *) CFBridgingRelease(string);
//将中间分隔符号去掉
pinyin = [pinyin stringByReplacingOccurrencesOfString:@" " withString: @""];
return pinyin;
}