Design editor is unavailable until a successful build点击菜单栏的build→make project即可将布局界面刷新出来版权声明：本文为Sky_Cat原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。原文链接：https://blog.csdn.net/Sky_Cat/article/details/104180105