Capturing of Screen shot starting from 0,0
I am using following code to make a screen shot
UIGraphicsBeginImageContext(self.view.frame.size);
blendMode:kCGBlendModeClear alpha:1.0];
[self.开发者_如何学Cview.window.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);
return viewImage;
It is working fine but it returns the full screen, and I want a screen shot of a particular Frame, like ( 100,100,200,200)
, I tried to make changes in:
UIGraphicsBeginImageContext(self.view.frame.size);
But no success.
Try this:
float x = 100;
float y = 100;
CGSize size = CGSizeMake(200,200);
UIGraphicsBeginImageContext(size);
CGContextRef c = UIGraphicsGetCurrentContext();
CGContextTranslateCTM(c, -x, -y);
[view.layer renderInContext:c];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
just use three line of code.
UIGraphicsBeginImageContext(CGSizeMake(320, 480));
[self.window.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *frame= UIGraphicsGetImageFromCurrentImageContext();
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