目录1.导入同级模块2.导入下级模块3.导入上级模块4.导入隔壁文件夹下的模块5.常见错误及import原理假设有如下目录结构：
I\'ve racked my brain for hours over this issue.I have created a main.xml and designed one for the res/layout-land (landscape) format and another one for portrait in res/layout.
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