快速汉字转拼音

来源：互联网发布：apriori算法置信度编辑：程序博客网时间：2024/06/05 18:16

第一阶段：git开源工具：PinYin4Objc

第二阶段：网友推荐方法

- (NSString *)transformToPinyin {    NSMutableString *mutableString = [NSMutableString stringWithString:self];    CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformToLatin, false);    CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformStripDiacritics, false);    return mutableString;}

第三阶段：正则表达式优先过滤英文数字特殊字符等

- (NSString *)transformToPinyin {    NSMutableString *mutableString = [NSMutableString stringWithString:self];    BOOL isNeedTransform = ![self isAllEngNumAndSpecialSign];    if (isNeedTransform) {        CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformToLatin, false);        CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformStripDiacritics, false);    }    return mutableString;} - (BOOL)isAllEngNumAndSpecialSign {    NSString *regularString = @"^[A-Za-z0-9\\p{Z}\\p{P}]+$";    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regularString];    return [predicate evaluateWithObject:self];}

第四阶段：参考http://nshipster.com/cfstringtransform/

- (NSString *)transformToPinyin {    NSMutableString *mutableString = [NSMutableString stringWithString:self];    BOOL isNeedTransform = ![self isAllEngNumAndSpecialSign];    if (isNeedTransform) {        CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformToLatin, false);        CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformStripCombiningMarks, false);    }    return mutableString;} - (BOOL)isAllEngNumAndSpecialSign {    NSString *regularString = @"^[A-Za-z0-9\\p{Z}\\p{P}]+$";    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regularString];    return [predicate evaluateWithObject:self];}

第五阶段：终极优化版

- (NSString *)transformToPinyin {    NSMutableString *mutableString = [NSMutableString stringWithString:self];    CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformToLatin, false);    mutableString = (NSMutableString *)[mutableString stringByFoldingWithOptions:NSDiacriticInsensitiveSearch locale:[NSLocale currentLocale]];    return mutableString;}

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