iOS截屏代码Demo

      //代码截屏       //(1)设置要截屏的图片的大小       UIGraphicsBeginImageContext(self.view.frame.size);       //(2)对哪个视图截图固定大小的图片        [self.view.layerrenderInContext:UIGraphicsGetCurrentContext()];       //(3)获取截图的图片对象       UIImage *image = UIGraphicsGetImageFromCurrentImageContext();       //(4)结束绘制图片       UIGraphicsEndImageContext();       //(5)保存到相册       UIImageWriteToSavedPhotosAlbum(image, nil,nil, nil);