Convert array of image path into base64 encoded string.? - ios

Question

I want to convert array of Image Paths which are in document directory into Encoded baSE 64 string.
Here is my code
NSArray *recipeImages = [savedImagePath valueForKey:#"Image"];
this array contains path of the images (MULTIPLE IMAGES).
This is how array looks in Logs.
Saved Images == (
"/Users/ZAL02M/Library/Developer/CoreSimulator/Devices/F1F3C01E-8686-4367-82FB-80B003E2F416/data/Containers/Data/Application/694494B1-0DCA-497A-B8B0-586276EEF240/Documents/cached0.png",
"/Users/ZAL02M/Library/Developer/CoreSimulator/Devices/F1F3C01E-8686-4367-82FB-80B003E2F416/data/Containers/Data/Application/694494B1-0DCA-497A-B8B0-586276EEF240/Documents/cached1.png"
)
How to make base64 string ???

Answer 1

Try this to cycle all your images and save each encoded string into a new array:
NSMutableArray *encodedImages = [NSMutableArray new];
for (NSString *path in recipeImages)
{
UIImage *image = [UIImage imageWithContentsOfFile:path];
NSData *imageData = UIImagePNGRepresentation(image);
NSString *dataString = [imageData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
[encodedImages addObject:dataString];
}

Answer 2

Convert your ImagePaths (Strings) to NSData and from NSData back to string via base64EncodedStringWithOptions:
Here the code:
NSArray *recipeImages = [savedImagePath valueForKey:#"Image"];
NSMutableArray *mutableBase64StringsArray = #[].mutableCopy;
for (NSString *imagePath in recipeImages)
{
NSData *imagePathData = [imagePath dataUsingEncoding:NSUTF8StringEncoding];
NSString *base64ImagePath = [imagePathData base64EncodedStringWithOptions:0];
[mutableBase64StringsArray addObject:base64ImagePath];
}
In the mutableBase64StringsArray you have all imagePaths as base64 encoded strings.
Look at this post from SO for more explanations: Base64 Decoding in iOS 7+

Answer 3

you can try this
Encoding :
- (NSString *)encodeToBase64String:(UIImage *)image {
return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
}
Decoding :
- (UIImage *)decodeBase64ToImage:(NSString *)strEncodeData {
NSData *data = [[NSData alloc]initWithBase64EncodedString:strEncodeData options:NSDataBase64DecodingIgnoreUnknownCharacters];
return [UIImage imageWithData:data];
}
To get image from your path you can use this code
NSString* imagePath = [recipeImages objectAtIndex:i];
UIImage *image = [[UIImage alloc] initWithContentsOfFile:imagePath];
Then add encoded content to your array.
Hope it helps.