在iPad上拍摄部分截图

Question

I'm trying to take a screenshot on save, but can only do full screen. Is there any way to take a partial screenshot?

Here is a sample. Say I just want to take a screenshot of the section highlighted in red. Thanks for the help.

http://img197.imageshack.us/img197/6499/sampleimagez.jpg

Answer 1

It looks like you want a screenshot of that web view there. If you want to get an image of a specific view and only that view (+ subviews), you can use the following code:

- (UIImage*)captureView:(UIView*)view
{ 
    if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)])
        UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, [UIScreen mainScreen].scale);
    else
        UIGraphicsBeginImageContext(self.view.bounds.size);

    CGContextRef context = UIGraphicsGetCurrentContext();

    [view.layer renderInContext:context];

    UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return img;
}

Just pass the web view to that function and it should work.

EDIT:

Assuming that was just an example image and you want a screenshot of an area that is not contained in its own view, go with Canada Dev's solution. Crop the image to the area that you want.