iOS开发中如何更快的实现汉字转拼音

第一阶段：git开源工具：PinYin4Objc

第二阶段：网友推荐方法

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- ( 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

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- ( 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/

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- ( 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

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

Demo移步https://github.com/panghaijiao/PHJTransformPinyinDemo，喜欢请点赞，感谢你的来访！

该文章出自：庞海礁的个人空间 

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