I already do Lot of efforts from my Side. finally I need help. thanks
Goal : 1) How I fit imageView inside ScrollView
2) How I crop a zoomed Image in inside scrollView.
I have a imageView inside Scroll View. I wants crop image after zoomed which is display inside scrollview boundary. I cropped image already but it not exactly same which i wants.
Here I set backgroundColor Black to my scrollView. And when I place imageView inside it, it's not fit.
after zoom image inside scroll view is
and after crop image is
and my code is here :
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect frame1 = CGRectMake(50,50,200,200);
CGRect frame2 = CGRectMake(50,50,200,200);
imageView1=[[UIImageView alloc]initWithFrame:frame1];
imageView1.image= [UIImage imageNamed:@"back.jpeg"];
imageView1.backgroundColor=[UIColor brownColor];
imageView1.contentMode = UIViewContentModeScaleAspectFit;
scroll=[[UIScrollView alloc]initWithFrame:frame2];
scroll.backgroundColor=[UIColor blackColor];
[scroll addSubview:imageView1];
scroll.delegate=self;
[self.view addSubview:scroll];
[self setContentSizeForScrollView];
self.imageView1.userInteractionEnabled = YES;
}
setting scroll view contentSize
-(void)setContentSizeForScrollView
{
// scroll.contentSize = CGSizeMake(imageView1.frame.size.width,imageView1.frame.size.height);
scroll.contentSize = CGSizeMake(200, 200);
scroll.minimumZoomScale = .50;
scroll.maximumZoomScale = 1.5;
}
and my crop logic is
-(IBAction)cropButtonClicked
{
//Calculate the required area from the scrollview
CGRect rect = CGRectMake(50, 50, 200,200);
UIImage *image = [self imageByCropping:imageView1.image toRect:rect];
imageView1.image=image;
imageView1.contentMode = UIViewContentModeScaleAspectFit;
}
And this method crop image :
- (UIImage*)imageByCropping:(UIImage *)myImage toRect:(CGRect)cropToArea{
CGImageRef cropImageRef = CGImageCreateWithImageInRect(myImage.CGImage, cropToArea);
UIImage* cropped = [UIImage imageWithCGImage:cropImageRef];
CGImageRelease(cropImageRef);
return cropped;
}