iOS 中汉语转拼音

方法一：

+ (NSString *) chineseCharactersToPinyin:(NSString*)sourceString {

NSMutableString *source = [sourceString mutableCopy];

CFStringTransform((__bridge CFMutableStringRef)source, NULL, kCFStringTransformMandarinLatin, NO);

CFStringTransform((__bridge CFMutableStringRef)source, NULL, kCFStringTransformStripDiacritics, NO);

return source;

}

方法二：

+ (NSString *) chineseCharactersToPinyin:(NSString*)sourceString {

 NSMutableString *mutableString = [NSMutableString stringWithString:sourceString];

 CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformToLatin, false);

 mutableString = (NSMutableString *)[mutableString stringByFoldingWithOptions:NSDiacriticInsensitiveSearch locale:[NSLocale currentLocale]];

 return mutableString;

}

方法二的运行速率比方法一快，故建议使用方法二。