'C'is not a valid file-based resource name character: File-based resource names must contain onl解决方法

在AndroidStudio中引入图片在drawable中可能出现下面问题

'X' is not a valid file-based resource name character: File-based resource names must contain only lowercase a-z, 0-9, or underscore

解决办法：文件名改成小写

底层资源文件中的名称只能是小写字母、数字、下划线