iphone 中文乱码解决方案

//NSData 转 NSString

NSData *data;

NSString*str = [[NSStringalloc] initWithData:data encoding:NSUTF8StringEncoding];

//NSString  转 NSData

NSString *string;

NSData*data = [string dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];

//char 转 NSString

char *str1;

NSString*str ＝ [NSString stringWithCString:str1 encoding:NSUTF8StringEncoding];

//NSString 转 char

NSString *str;

char *str1 = [str UTF8String];

//自转换

NSString*string;

string = [string stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

//也可以修改NSString类

//NSString+URLEncoding.h

#import<Foundation/Foundation.h>

@interface NSString (OAURLEncodingAdditions)

- (NSString *)URLEncodedString;

- (NSString *)URLDecodedString;

@end

//NSString+URLEncoding.m

#import"NSString+URLEncoding.h"

@implementation NSString (OAURLEncodingAdditions)

- (NSString *)URLEncodedString 

{

   NSString*result = (NSString*)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,

                                                                           (CFStringRef)self,

                                                                           NULL,

  CFSTR("!*'();:@&=+$,/?%#[]"),

                                                                           kCFStringEncodingUTF8);

    [result autorelease];

return result;

}

//解决url乱码

- (NSString*)URLDecodedString

{

NSString*result = (NSString*)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault,

  (CFStringRef)self,

  CFSTR(""),

  kCFStringEncodingUTF8);

    [result autorelease];

return result;

}

@end