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    <p>Hi VSN first of all cut the selected part from your imageview</p> <p>using this code</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"tactile_noise.png"]]; self.imageCropper = [[BJImageCropper alloc] initWithImage:[UIImage imageNamed:@"gavandme.jpg"] andMaxSize:CGSizeMake(1024, 600)]; [self.view addSubview:self.imageCropper]; self.imageCropper.center = self.view.center; self.imageCropper.imageView.layer.shadowColor = [[UIColor blackColor] CGColor]; self.imageCropper.imageView.layer.shadowRadius = 3.0f; self.imageCropper.imageView.layer.shadowOpacity = 0.8f; self.imageCropper.imageView.layer.shadowOffset = CGSizeMake(1, 1); [self.imageCropper addObserver:self forKeyPath:@"crop" options:NSKeyValueObservingOptionNew context:nil]; if (SHOW_PREVIEW) { self.preview = [[UIImageView alloc] initWithFrame:CGRectMake(10,10,self.imageCropper.crop.size.width * 0.1, self.imageCropper.crop.size.height * 0.1)]; self.preview.image = [self.imageCropper getCroppedImage]; self.preview.clipsToBounds = YES; self.preview.layer.borderColor = [[UIColor whiteColor] CGColor]; self.preview.layer.borderWidth = 2.0; [self.view addSubview:self.preview]; } } </code></pre> <p>check this example</p> <p><a href="https://github.com/barrettj/BJImageCropper/downloads" rel="nofollow">https://github.com/barrettj/BJImageCropper/downloads</a></p> <p>OR <strong>To crop the selected image part do like that</strong></p> <pre><code>// Create the image from a png file UIImage *image = [UIImage imageNamed:@"prgBinary.jpg"]; UIImageView *imageView = [[UIImageView alloc] initWithImage:image]; // Get size of current image CGSize size = [image size]; // Frame location in view to show original image [imageView setFrame:CGRectMake(0, 0, size.width, size.height)]; [[self view] addSubview:imageView]; [imageView release]; // Create rectangle that represents a cropped image // from the middle of the existing image CGRect rect = CGRectMake(size.width / 4, size.height / 4 , (size.width / 2), (size.height / 2)); // Create bitmap image from original image data, // using rectangle to specify desired crop area CGImageRef imageRef = CGImageCreateWithImageInRect([image CGImage], rect); UIImage *img = [UIImage imageWithCGImage:imageRef]; CGImageRelease(imageRef); // Create and show the new image from bitmap data imageView = [[UIImageView alloc] initWithImage:img]; [imageView setFrame:CGRectMake(0, 200, (size.width / 2), (size.height / 2))]; [[self view] addSubview:imageView]; [imageView release]; </code></pre> <p>Refer this</p> <p><a href="http://mobiledevelopertips.com/graphics/how-to-crop-an-image.html" rel="nofollow">http://mobiledevelopertips.com/graphics/how-to-crop-an-image.html</a></p> <p>OR To Resize the uiiamgeview do like that</p> <pre><code>- (UIImage *)resizeImage:(UIImage*)image newSize:(CGSize)newSize { CGRect newRect = CGRectIntegral(CGRectMake(0, 0, newSize.width, newSize.height)); CGImageRef imageRef = image.CGImage; UIGraphicsBeginImageContextWithOptions(newSize, NO, 0); CGContextRef context = UIGraphicsGetCurrentContext(); // Set the quality level to use when rescaling CGContextSetInterpolationQuality(context, kCGInterpolationHigh); CGAffineTransform flipVertical = CGAffineTransformMake(1, 0, 0, -1, 0, newSize.height); CGContextConcatCTM(context, flipVertical); // Draw into the context; this scales the image CGContextDrawImage(context, newRect, imageRef); // Get the resized image from the context and a UIImage CGImageRef newImageRef = CGBitmapContextCreateImage(context); UIImage *newImage = [UIImage imageWithCGImage:newImageRef]; CGImageRelease(newImageRef); UIGraphicsEndImageContext(); return newImage; } </code></pre> <p><strong>After crop or resize the your image to apply <code>UIPanGestureRecognizer</code></strong></p> <pre><code>UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(move:)]; [panRecognizer setMinimumNumberOfTouches:1]; [panRecognizer setMaximumNumberOfTouches:1]; [panRecognizer setDelegate:self]; [holderView addGestureRecognizer:panRecognizer]; -(void)move:(id)sender { [[[(UITapGestureRecognizer*)sender view] layer] removeAllAnimations]; [self.view bringSubviewToFront:[(UIPanGestureRecognizer*)sender view]]; CGPoint translatedPoint = [(UIPanGestureRecognizer*)sender translationInView:self.view]; if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateBegan) { firstX = [[sender view] center].x; firstY = [[sender view] center].y; } translatedPoint = CGPointMake(firstX+translatedPoint.x, firstY+translatedPoint.y); [[sender view] setCenter:translatedPoint]; if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) { CGFloat finalX = translatedPoint.x + (.35*[(UIPanGestureRecognizer*)sender velocityInView:self.view].x); CGFloat finalY = translatedPoint.y + (.35*[(UIPanGestureRecognizer*)sender velocityInView:self.view].y); if(UIDeviceOrientationIsPortrait([[UIDevice currentDevice] orientation])) { if(finalX &lt; 0) { finalX = 0; } else if(finalX &gt; 768) { finalX = 768; } if(finalY &lt; 0) { finalY = 0; } else if(finalY &gt; 1024) { finalY = 1024; } } else { if(finalX &lt; 0) { finalX = 0; } else if(finalX &gt; 1024) { finalX = 768; } if(finalY &lt; 0) { finalY = 0; } else if(finalY &gt; 768) { finalY = 1024; } } [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:.35]; [UIView setAnimationCurve:UIViewAnimationCurveEaseOut]; [[sender view] setCenter:CGPointMake(finalX, finalY)]; [UIView commitAnimations]; } } </code></pre>
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