CODEWITHSUNDEEP
objective-cxcodeios7
user2740929
user2740929

Reputation: 31

No visible @interface for 'NSData' declares the selector 'initWithBase64Encoding:

I am trying to build in xcode but I keep getting this issue 

No visible @interface for 'NSData' declares the selector 'initWithBase64Encoding:'

and

No visible @interface for 'NSData' declares the selector 'base64Encoding'

I have looked everywhere not but there isn't a clear solution to my problem. These are what's giving me problem:

- (NSString*)stringFromImage:(UIImage*)image 
  {
      if(image) 
      {
          UIImage* convertImage = [GameUtility imageWithImage:image scaledToSize:CGSizeMake(80, 80)];
          NSData *dataObj = UIImageJPEGRepresentation(convertImage, 30);
          return [dataObj base64Encoding];
      }
      return @"";
  }

- (UIImage*)imageFromString:(NSString*)imageString 
  {
       NSData* imageData =[[NSData alloc] initWithBase64Encoding:imageString];
       return [UIImage imageWithData:imageData];
  }

Upvotes: 0

Views: 2477

Answers (3)

Jignesh Chanchiya
Jignesh Chanchiya

Reputation: 803

use this base64 file for encode and decode

- (NSString*)stringFromImage:(UIImage*)image 
   { 
      if(image) 
      { 
          UIImage* convertImage = [GameUtility imageWithImage:image scaledToSize:CGSizeMake(80, 80)]; 
          NSData *dataObj = UIImageJPEGRepresentation(convertImage, 30); 
          return [dataObj base64EncodedString]; 
       } 
      return @""; 
   } 

 - (UIImage *)imageFromString:(NSString*)imageString 
   { 
      NSData* imageData =[imageString base64DecodedData]; 
      return [UIImage imageWithData:imageData]; 
   }

Upvotes: 1

Drake
Drake

Reputation: 134

You can convert your image to string like this first. And then you can try convert your UIImage to NSData & then convert that data into string by using encodeBase64WithData

NSString * Image = [self encodeBase64WithData:[imageDict objectForKey:@"Image"]];

and then try your UIImage to string like this

[UIImage imageWithData: [self decodeBase64WithString:[registerDataDict objectForKey:@"Image"]]];

Hope it helps you

Upvotes: 1

dreamlax
dreamlax

Reputation: 95355

If you are targeting OS X 10.9 or iOS 7 you can use the base64EncodedStringWithOptions: method to encode the string, and the initWithBase64EncodedString:options: method to decode the string.

If you are targeting platforms earlier than this, you need to either write these methods yourself or find a library that implements them for you (as category methods of NSData). Different libraries will have different names for these methods, so make sure you check with that library's documentation or check the header.

Upvotes: 1

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