- (NSString *)spelling
{
if (self.length) {
NSMutableString *copy = [self mutableCopy];
CFStringTransform((__bridge CFMutableStringRef)copy, NULL, kCFStringTransformMandarinLatin, NO); // 得到带音调的拼音
CFStringTransform((__bridge CFMutableStringRef)copy, NULL, kCFStringTransformStripDiacritics, NO); // 过滤掉音调 每个汉字之间会用空格分开
[copy replaceOccurrencesOfString:@" " withString:@"" options:NSCaseInsensitiveSearch range:NSMakeRange(0, copy.length)]; // 过滤掉空格
return copy;
}
else {
return nil;
}
}
