text: 
  #import <Foundation/Foundation.h>
  #import <UIKit/UIKit.h>
  
  @interface NSString (Extension)
  /**
   *  对身份证号进行处理
   *
   *  @return 带*的字符串
   */
  - (NSString *)itemDisposeIdcardNumber;
  
  - (CGSize)returnSizeWittMaxSize:(CGSize)size textFont:(UIFont *)textFont;
  
  - (CGFloat)returnWidthFont:(UIFont *)textFont;
  
  /*
   *  对字符串进行编码
   */
  - (NSString *)encodedString;
  
  //通过url.query获取参数字符 再分成字典
  - (NSMutableDictionary *)getURLParameters;
  
  - (BOOL)isNull;
  
  @end
  