iOS 获取中文拼音

    NSString *hanziText = @"中文转拼音";
    if ([hanziText length]) {
        NSMutableString *ms = [[NSMutableString alloc] initWithString:hanziText];
        if (CFStringTransform((__bridge CFMutableStringRef)ms, 0, kCFStringTransformMandarinLatin, NO)) {
            NSLog(@"pinyin: %@", ms);
        }
        if (CFStringTransform((__bridge CFMutableStringRef)ms, 0, kCFStringTransformStripDiacritics, NO)) {
            NSLog(@"pinyin: %@", ms);
        }
    }

let s = "中文转拼音"
let ens = NSMutableString(string: s) as CFMutableString

// 此时有声调
CFStringTransform(ens, UnsafeMutablePointer<CFRange>(), kCFStringTransformMandarinLatin, false)
NSLog("\(ens)")

// 去掉声调
CFStringTransform(ens, UnsafeMutablePointer<CFRange>(), kCFStringTransformStripDiacritics, false)
NSLog("\(ens)")