Created
March 21, 2016 02:34
-
-
Save CaliosD/7f80a66a5165a5e5f622 to your computer and use it in GitHub Desktop.
截取屏幕图片
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
//创建一个基于位图的图形上下文并指定大小为CGSizeMake(200,400) | |
UIGraphicsBeginImageContext(CGSizeMake(200,400)); | |
//renderInContext 呈现接受者及其子范围到指定的上下文 | |
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; | |
//返回一个基于当前图形上下文的图片 | |
UIImage *aImage = UIGraphicsGetImageFromCurrentImageContext(); | |
//移除栈顶的基于当前位图的图形上下文 | |
UIGraphicsEndImageContext(); | |
//以png格式返回指定图片的数据 | |
imageData = UIImagePNGRepresentation(aImage); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment