iphone sdk：創建屏幕內容的圖像？

Question

我正在尋找一種方法將屏幕的內容寫入圖像。任何想法如何實現？它涉及使用Quartz嗎？

感謝

Answer 1

一言以蔽之：

CGImageRef screen = UIGetScreenImage(); 
UIImage *screenImage = [UIImage imageWithCGImage:screen]; 

Answer 2

此代碼添加到您的UIViewController創建其的UIView的屏幕轉儲。

// create screen dump of the view of this view controller 
UIGraphicsBeginImageContext(self.view.bounds.size); 
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; 
UIImage *screenShot = UIGraphicsGetImageFromCurrentImageContext(); 
UIGraphicsEndImageContext(); 

// save image to photos 
UIImageWriteToSavedPhotosAlbum(screenShot, self, nil, nil);