漢字轉(zhuǎn)拼音 系統(tǒng)庫(kù)實(shí)現(xiàn)：

NSString *city = @"杭州";
// 或者使用：NSMutableString *cityP = [city mutableCopy];
NSMutableString *cityP = [[NSMutableString alloc] initWithString:city];
//轉(zhuǎn)換成拼音
CFStringTransform((__bridge CFMutableStringRef)cityP, NULL, kCFStringTransformMandarinLatin, NO);
//去聲調(diào)
CFStringTransform((__bridge CFMutableStringRef)cityP, NULL, kCFStringTransformStripDiacritics, NO);```

就是這么簡(jiǎn)單~