iOS字符串转Base64编码

//转换图片的方法Base64

- (NSString *)UIImageToBase64Str:(UIImage *)image

{

NSData *data = UIImagePNGRepresentation(image);

NSString *encodedImageStr = [data base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

return encodedImageStr;

}

//把字符串转成Base64编码

- (NSString *)base64EncodeString:(NSString *)string

{

NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];

return [data base64EncodedStringWithOptions:0];

}

//字符串解码

- (NSString *)stringEncodeBase64:(NSString *)base64

{

NSData *nsdataFromBase64String = [[NSData alloc]initWithBase64EncodedString:base64 options:0];

NSString *base64Decoded = [[NSString alloc]initWithData:nsdataFromBase64String encoding:NSUTF8StringEncoding];

return base64Decoded;

}