Taking a picture from the camera and show it in a UIImageView

Question

I have a view with some fields (name, price, category) and a segmented control, plus this button to take picture.
If I try this on the simulator (no camera) it works properl

Answer 1

To Crop image i think this may help you

UIImage *croppedImage = [self imageByCropping:photo.image toRect:tempview.frame];

CGSize size = CGSizeMake(croppedImage.size.height, croppedImage.size.width);
UIGraphicsBeginImageContext(size);

CGPoint pointImg1 = CGPointMake(0,0);
[croppedImage drawAtPoint:pointImg1 ];

[[UIImage imageNamed:appDelegete.strImage] drawInRect:CGRectMake(0,532, 150,80) ];

UIImage* result = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
croppedImage = result;

UIImageView *mainImageView = [[UIImageView alloc] initWithImage:croppedImage];

CGRect clippedRect = CGRectMake(0, 0, croppedImage.size.width,  croppedImage.size.height);

CGFloat scaleFactor = 0.5;

UIGraphicsBeginImageContext(CGSizeMake(croppedImage.size.width * scaleFactor, croppedImage.size.height * scaleFactor));
CGContextRef currentContext = UIGraphicsGetCurrentContext();

CGContextClipToRect(currentContext, clippedRect);   

//this will automatically scale any CGImage down/up to the required thumbnail side (length) when the CGImage gets drawn into the context on the next line of code
CGContextScaleCTM(currentContext, scaleFactor, scaleFactor);

[mainImageView.layer renderInContext:currentContext];

appDelegete.appphoto = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();