iOS将汉字转成拼音

+ (NSString*)transform:(NSString*)chinese{NSMutableString*pinyin = [chinese mutableCopy];CFStringTransform((__bridgeCFMutableStringRef)pinyin,NULL, kCFStringTransformMandarinLatin,NO);CFStringTransform((__bridgeCFMutableStringRef)pinyin,NULL, kCFStringTransformStripCombiningMarks,NO);NSLog(@"%@", pinyin);return[pinyin uppercaseString];}