Low memory waning while taking screenshot of a view in iPhone - iphone

Question

I am having an app in which I am taking a screenshot of a view and saving that image on documents folder.
I am using the following code.
CGSize size = self.view.bounds.size;
CGRect cropRect;
CGRect screenBounds = [[UIScreen mainScreen] bounds];
if([self isPad])
{
cropRect = CGRectMake(145, 110, 476, 476);
}
else
{
if (screenBounds.size.height ==568)
{
cropRect = CGRectMake(40, 69, 240, 240);
}
else
{
cropRect = CGRectMake(40, 62, 240, 240);
}
}
/* Get the entire on screen map as Image */
UIGraphicsBeginImageContext(size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage * mapImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
/* Crop the desired region */
CGImageRef imageRef = CGImageCreateWithImageInRect(mapImage.CGImage, cropRect);
UIImage * cropImage = [UIImage imageWithCGImage:imageRef];
CGImageRelease(imageRef);
/* Save the cropped image
UIImageWriteToSavedPhotosAlbum(cropImage, nil, nil, nil);*/
//save to document folder
NSData * imageData = UIImageJPEGRepresentation(cropImage, 1.0);
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
imagename=[NSString stringWithFormat:#"Fff.jpg"];
NSString* fullPathToFile = [documentsDirectory stringByAppendingPathComponent:imagename];
////NSLog(#"full path %#",fullPathToFile);
[imageData writeToFile:fullPathToFile atomically:NO];
It works fine if I take the screenshot 15 to 20 times but after that It gives me low memory warning and the app crashes after that on this code.
Is there a more optimized code that I can use which does not cause such memory problems.
Please help me.

Answer 1

Capture screen with my bellow method..
- (UIImage *)captureView {
//hide controls if needed
CGRect rect = [self.view bounds];// Here define CGRect with your requirement of take screenshot of some part
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
[self.view.layer renderInContext:context];
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return img;
}
See my another answer howe-to-capture-uiview-top-uiview