//大图bigImage //定义myImageRect,截图的区域 if (imagecount >= 3) { CGRect myImageRect; if (i.size.width<= i.size.height) { myImageRect = CGRectMake(0.0, 150.0, i.size.width, i.size.width); } else myImageRect = CGRectMake(0.0, 150.0, i.size.height, i.size.hei…