Saving JPG image from Documents to Photo Album - Sample Code

Question

I have generated JPG image, saved to Documents folder, that not comes with bundle. Please help with the building class for saving it to Gallery.

Finnaly with help of kviksilver

To make complete solution:

// tools.h

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface tools : NSObject {

}

@end

// tools.m

#import "tools.m"

@implementation tools

-(IBAction)saveImage{

    NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory=[paths objectAtIndex:0];
    NSString *imagePath=[documentsDirectory stringByAppendingPathComponent:@"file7.jpg"];
    UIImage *image=[UIImage imageWithContentsOfFile:imagePath];
    UIImageWriteToSavedPhotosAlbum(image, self,@selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil);
}
@end

In the end have to call it from CPP wrapper:

void onCPPSaveImgToCamRoll ( )
{
    return saveImage;
}

score 2 · Answer 1 · answered Jun 01 '11 at 17:18

2

Your answer is in the first page of the UIImage Class Reference.

void UIImageWriteToSavedPhotosAlbum (
   UIImage  *image,
   id       completionTarget,
   SEL      completionSelector,
   void     *contextInfo
);

answered Jun 01 '11 at 17:18

Desdenova

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one of the blessed few that is actually completely straight forward :D – Nils Munch Jun 01 '11 at 17:33

kviksilver · Accepted Answer · 2011-06-01T20:13:09.987

try getting imagePath like this:

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory=[paths objectAtIndex:0];
NSString *imagePath=[documentsDirectory stringByAppendingPathComponent:@"Image.jpg"];

then setting image:

 UIImage *image=[UIImage imageWithContentsOfFile:imagePath];
UIImageWriteToSavedPhotosAlbum(image, self,@selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil);

savedPhotoImage:didFinishSavingWithError:contextInfo: will be called when finished saving or failing

just create two methods in your class:

-(void)saveImage{ 

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 

NSString *documentsDirectory=[paths objectAtIndex:0]; 

NSString *imagePath=[documentsDirectory stringByAppendingPathComponent:@"Image.jpg"]; 

UIImage *image=[UIImage imageWithContentsOfFile:imagePath]; 

UIImageWriteToSavedPhotosAlbum(image, self,@selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil);


} 
- (void)savedPhotoImage:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInf{ 

// possible error handling

}

and you should be ok –

dont forget to include savedPhotoImage:didfinish... method so that app doesnt crash.. :-D — kviksilver, Jun 01 '11 at 20:13

Saving JPG image from Documents to Photo Album - Sample Code

2 Answers2