问题
where can I find the naming rules for Android resources? I found out thanks to compilation errors that I must use characters within [a-z0-9._], but I also have an error with an image named 401.png. When using it in my layout using
@drawable/401
I get the following compilation error:
invalid VariableDeclaratorId
I can't find these rules in the doc, and I'd like to know all of them before naming my files.
Thanks
回答1:
The rules are the same as for Java identifiers since each resource must have a corresponding ID field generated in the R.java file.
回答2:
Worth noting that: "File-based resource names must contain only lowercase a-z, 0-9, or underscore" characters. (quoted from compile error code).
回答3:
The number is not allowed as first char of resource also not any capital letter
回答4:
Your convention is correct, except that you can't start your file names with a number.
回答5:
Naming rules for resources are the same as for the variables, except the case-sensitivity. In your case, problem is the first character is number.
回答6:
This is Java rule, not Android-only rule. Name each element with a starting letter, and you'll be right.
来源：https://stackoverflow.com/questions/5949395/naming-rules-for-android-resources