Save signature image in png format in ios

Question

I have drawable text which is used for signature , I want this context save in png format with a specific path but I could not do this.I want my draw image save in png format and I can use any where

**Code for png format and path**

NSData *imageData = UIImagePNGRepresentation(_SignatureView.signatureImage);

 NSString *imagePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:@"/imageName.png"];

[imageData writeToFile:imagePath atomically:YES];

_SignatureView is a property and signatureImage is a method 

**code of signature image method**

- (UIImage *)signatureImage
{
    if (!self.hasSignature)
        return nil;


    UIImage *screenshot = [self snapshot];


    return screenshot;
}

http://stackoverflow.com/a/5262262/2168557 – yusuke024 May 04 '16 at 07:07 — yusuke024, May 04 '16 at 07:07

Abhishek · Answer 1 · 2016-05-04T08:50:05.417

1

NSString *docPath=  @"/Users/.../.../";
NSString *filePath=[docPath stringByAppendingPathComponent:@"PdfFileName.pdf"];

NSMutableData pdfData=[NSMutableData data];
CGRect bounds = CGRectMake(0, 0, 612, 792);
UIGraphicsBeginPDFContextToData(pdfData, bounds, nil);

CGContextRef pdfContext = UIGraphicsGetCurrentContext();
UIGraphicsBeginPDFPage();

[YourSignature.layer renderInContext:pdfContext];
UIGraphicsEndPDFContext();
[pdfData writeToFile:filePath atomically:YES];

edited May 04 '16 at 08:50

answered May 04 '16 at 08:39

Abhishek

39
3
14

Thanks to All..Who help me...Seriously save lot time..@Abhishek and @Madhu – Harsh Rajput May 04 '16 at 10:27

Madhumitha · Accepted Answer · 2016-05-04T07:13:42.263

0

Try like this

- (void)saveImage: (UIImage*)image
  {
    if (image != nil)
    {
       NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
       NSUserDomainMask, YES);
       NSString *documentsDirectory = [paths objectAtIndex:0];
       NSString* path = [documentsDirectory stringByAppendingPathComponent:
      [NSString stringWithString: @"test.png"] ];
      NSData* data = UIImagePNGRepresentation(image);
      [data writeToFile:path atomically:YES];
      }
  }

and to get the image use the following code

 - (UIImage*)loadImage
 {
   NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
   NSUserDomainMask, YES);
   NSString *documentsDirectory = [paths objectAtIndex:0];
   NSString* path = [documentsDirectory stringByAppendingPathComponent:
   [NSString stringWithString: @"test.png"] ];
   UIImage* image = [UIImage imageWithContentsOfFile:path];
   return image;
 }

edited May 04 '16 at 07:13

answered May 04 '16 at 07:06

Madhumitha

3,794
8
30
45

@madhumita Thanks for help.But still i not able to save image – Harsh Rajput May 04 '16 at 07:44
have you checked wheather your _SignatureView.signatureImage is having image reference? – Madhumitha May 04 '16 at 08:35
:-I checked my iamge show in my next view controller but where it is save ,i don't know. – Harsh Rajput May 04 '16 at 09:52
I checked in Documents in my mac but there is no image ..Give me solution – Harsh Rajput May 04 '16 at 10:54
refer this link and print saved image path .After check that in that path.http://stackoverflow.com/questions/11219202/check-existing-image-in-nsdocumentdirectory – Madhumitha May 04 '16 at 11:20

Save signature image in png format in ios

2 Answers2