Saving an Image

[SAG3194]

Hey i have this code and for some reason it saves the entire view I only want to it save an image.....

- (IBAction)saveViewToPhotoLibraryid)sender {

CGRect screenRect = [[UIScreen mainScreen] bounds];
UIGraphicsBeginImageContext(screenRect.size);

CGContextRef ctx = UIGraphicsGetCurrentContext();
[[UIColor blackColor] set];
CGContextFillRect(ctx, screenRect);

[self.view.layer renderInContext:ctx];

UIImage *image1 = UIGraphicsGetImageFromCurrentImageContext();
UIImageWriteToSavedPhotosAlbum(image1, nil, nil, nil);
UIGraphicsEndImageContext();
}

[RickMaddy]

Sarcasm on

Let's see. You have a method called saveViewToPhotoLibrary. In this method you render the view to a graphics context. You then create an image with this context and save the image (representing the view) to the photo library.

Now why is it that you don't understand why it's saving the view?

Sarcasm off

If you just want to save an image to the photo library then just use the one line of code:

UIImageWriteToSavedPhotosAlbum(image1, nil, nil, nil);

passing in the UIImage you actually want to save.

None of that other code is of any use for simply saving an image you already have.

HTH.

Rick

[SAG3194]

- (IBAction)saveImageToPhotoLibraryid)sender {

UIImageWriteToSavedPhotosAlbum(image3.image, nil,nil,nil);

}

This doesn't work..

[scottiphone]

Recheck your code. Is the image valid and not 0? Has it been released? Are you retaining it while saving?
Step into the debugger.

[PhoneyDeveloper]

Rick,

Don't you know anything?

This is the sarcasm tag:

<sarcasm>

It ends here:

</sarcasm>

[SAG3194]

- (IBAction)saveViewToPhotoLibraryid)sender {

UIImageWriteToSavedPhotosAlbum(image3.image, self, (SEL)@selector(image:didFinishSavingWithError:cont extInfo, image.image);


[image release];
[image3 release];

}

Still Doesn't Work..

[RickMaddy]

SAG - Run your code in the debugger and confirm that image3 is a valid UIImageView and that its image is not null.

Phoney - I know, I'm embarrassed I didn't remember to use the right tags.

That's one black mark on my Geek card.

[SAG3194]

macbook-pro-2.local NavBar[11732] <Error>: CGImageDestinationAddImage image parameter is nil\n


Sat Nov 15 22:18:33 macbook-pro-2.local NavBar[11732] <Error>: CGImageDestinationFinalize image destination does not have enough images\n

You were right... how do I make it so that it isn't nil?

[walaber]

UIImageWriteToSavedPhotosAlbum appears to use another thread to do the saving, so it errors if you release the image right after you call it.

to do it properly, you need to setup a function for it to call when saving is complete, and then release the image. the function for it to call should look like this:

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo

...and then you call UIImageWriteToSavedPhotosAlbum like this:

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

[kmadhukishore]

Can we do this for EAGLLayer???
I tried but I am getting black screen

Thanks,
Madhu.