iOS - save image in jpg format

Question

My question is what format the image is saved, if is dat or jpg. This is the code that i used:

    NSString * urlImage = .....;
    NSString * _folderPath = .....;

    NSString * imageName = [[urlImage componentsSeparatedByString:@"/"] lastObject];
        NSString * jpegPath = [NSString stringWithFormat:@"%@%@",_folderPath,imageName];

        if (![[NSFileManager defaultManager] fileExistsAtPath:jpegPath])
        {
            NSURL *url = [NSURL URLWithString:urlImage];
            //Download image
            UIImage *image = [[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:url]];

            //Save image
            NSData *data = [NSData dataWithData:UIImageJPEGRepresentation(image, 1.0f)];//1.0f = 100% quality
            [data writeToFile:jpegPath atomically:YES];
        }

score 4 · Accepted Answer · answered Feb 10 '14 at 12:47

4

Following is piece of code for save .jpg image

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *docs = [paths objectAtIndex:0];
NSString* path =  [docs stringByAppendingFormat:@"/image1.jpg"];

NSData* imageData = [NSData dataWithData:UIImageJPEGRepresentation(imageView.image, 80)];
NSError *writeError = nil;
[imageData writeToFile:path options:NSDataWritingAtomic error:&writeError];

answered Feb 10 '14 at 12:47

iPatel

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Thanks for you answer. One question, the file is saved in .dat or .jpg? and is necessary to retrieve with a NSData? – Rodrigo Feb 10 '14 at 15:05
@RodDL - for get image from document directory http://stackoverflow.com/questions/6663511/iphone-how-to-display-document-directory-images-in-image-view – iPatel Feb 11 '14 at 05:07
1

Thanks for you help!! – Rodrigo Feb 11 '14 at 12:12
how can I change resolution of photo while saving yo JPG? – Radek Wilczak Dec 04 '17 at 13:21

score 0 · Answer 2 · answered Feb 10 '14 at 12:52

0

You should use

stringByAppendingPathComponent method to create or get exact valid path

Use this way:

    NSString * jpegPath = [_folderPath stringByAppendingPathComponent:imageName];// [NSString stringWithFormat:@"%@%@",_folderPath,imageName];

answered Feb 10 '14 at 12:52

Bhumeshwer katre

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Thanks i modified the line! – Rodrigo Feb 10 '14 at 15:03

iOS - save image in jpg format

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