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如果连接了笔式驱动器,我们必须运行一些设备测试应用程序(它不应该进入 android)。
如果未连接笔式驱动器,则 android 应该是 boot-up 。 对于这种情况,我们如何在 init.rc 中检查笔式驱动器是否连接。