How merge the overlapping sticker with image in iOS - ios

Question

i am trying to merge two different images in single image and trying to save it in the photo gallery. But the sticker which i am trying to merge on the image is getting stretched and not properly align to x and y in the image.
the code i am using is as below:
- (UIImage*)buildImage:(UIImage*)image
{
UIGraphicsBeginImageContextWithOptions(image.size, NO, image.scale);
[image drawAtPoint:CGPointZero];
CGFloat scale = image.size.width / _workingView.width;
NSLog(#"%f",scale);
CGContextScaleCTM(UIGraphicsGetCurrentContext(), scale, scale);
[_workingView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *tmp = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return tmp;
}
here in this code _workingview is the view containing the sticker image inside it & image in the arguement is the main image which we are passing in the function
i would be very much thank full for your help
Thanks Guys

Answer 1

CGFloat width, height;
CGFloat width, height;
UIImage *inputImage; // input image to be composited over new image as example
// create a new bitmap image context at the device resolution (retina/non-retina)
UIGraphicsBeginImageContextWithOptions(CGSizeMake(width, height), YES, 0.0);
// get context
CGContextRef context = UIGraphicsGetCurrentContext();
// push context to make it current
// (need to do this manually because we are not drawing in a UIView)
UIGraphicsPushContext(context);
// drawing code comes here- look at CGContext reference
// for available operations
// this example draws the inputImage into the context
[inputImage drawInRect:CGRectMake(0, 0, width, height)];
 [stickerImage drawInRect:CGRectMake(yourX,yourY,othertWidth,otherHeight)]
// pop context
UIGraphicsPopContext();
// get a UIImage from the image context- enjoy!!!
UIImage *outputImage = UIGraphicsGetImageFromCurrentImageContext();
// clean up drawing environment
UIGraphicsEndImageContext();