Picture Capture/Merge issue

[vikysaran]

See this image



on Grab button it opens camera/gallery. User selects or shoots image and presses choose button then picture comes inside above frame and looks like bellow.



now i have to save the image showing now with frame.

Tell me what to do. Is there any way to Capture screen? or how i can merge these photos to generate a new photo with frame.

Thanx & Regards-
Vaibhav Saran | Software Engineer
Neo Sypher Systems Pvt. Ltd.
New Delhi | India
E-Mail: vaibhav@golsonline.com
Website: www.rStrings.com

[rwenderlich]

You can draw the images to a "virtual" graphics context and then convert that graphics context into an image.

For example you can write code that looks something like this:

UIGraphicsBeginImageContext(contextRect);

[frame drawInRect:frameRect];
[image drawInRect:imageRect];

UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext();

[vikysaran]

Here is some code-

	UIGraphicsBeginImageContext(imgSave.bounds.size);
	[imgSave.layer renderInContext:UIGraphicsGetCurrentContext()];
	
	UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
	UIGraphicsEndImageContext();
	UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);
	NSLog(@"Saving To Gallery");

'imgSave' is the image view that needs to be save.
Before compile import 'QuartzCore.Framework' to application

I'm still looking for exact solution

[vikysaran]

Originally Posted by rwenderlich

You can draw the images to a "virtual" graphics context and then convert that graphics context into an image.

For example you can write code that looks something like this:

UIGraphicsBeginImageContext(contextRect);

[frame drawInRect:frameRect];
[image drawInRect:imageRect];

UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext();

I tried this-

	CGRect contextRect  = CGRectMake(-100, -100, 226, 155);
	UIGraphicsBeginImageContext(contextRect.size);	

	[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];

	UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
	UIGraphicsEndImageContext();
	UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);

But the resulting image is starting from origin (0,0) of screen whether I'm giving anything for x and y. But height and width are working as defined. Any solution for this?

thanx for you reply. It really worked for me

[Sana]

Originally Posted by vikysaran

I tried this-

	CGRect contextRect  = CGRectMake(-100, -100, 226, 155);
	UIGraphicsBeginImageContext(contextRect.size);	

	[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];

	UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
	UIGraphicsEndImageContext();
	UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);

But the resulting image is starting from origin (0,0) of screen whether I'm giving anything for x and y. But height and width are working as defined. Any solution for this?

thanx for you reply. It really worked for me

try using [self.yourView.layer renderInContext:UIGraphicsGetCurrentContext()];

instead of [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
where "yourView" you want to capture.

Hope it helps

[vikysaran]

Originally Posted by Sana

try using [self.yourView.layer renderInContext:UIGraphicsGetCurrentContext()];

instead of [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
where "yourView" you want to capture.

Hope it helps

if yourView -> UIImageView then it is not working. it shows error: request for member 'yourView' in something not a structure or union
Same error in case of UIImage also

somewhat i fullfilled my requirement. On Save click I'm displaying image on top and as saving finishes, it is back to previous view so the process is so quick that user cant not see the image on top.