主要代碼下面2行
UIImage * saveimg=[self saveImage];
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? UIImageWriteToSavedPhotosAlbum(saveimg, self, @selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil);
-(UIImage*)saveImage{
? ? UIGraphicsBeginImageContext(CGSizeMake(self.view.bounds.size.width, self.view.bounds.size.height - 20));//保存self.view上的內容
? ? [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
? ? UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
? ? UIGraphicsEndImageContext();
? ? return viewImage;
}