问题
I am currently working on a project to automatically generate very simple Android apps from UML models. Both the Java parts and the XML parts are working ok, but I have run into a problem: the R.java file.
As I see it, I have to options of generating the R.java file.
- The preferred way would be to make the Android SDK generate it for me, based on the XML files. But how could I do that? I can not open Eclipse and choose "Clean project", as I would normally do, since this is supposed to be an automated process. Is there any command line commands I could run? Something like apk -generateR -/path/R.java would be perfect.
- The other possibility I see is to generate it myself, by simply enumerating all resources and outputting a file with the R.java format.
If alternative 2 is the only way, the main issue I have is how to generate the numbers. A typical sequence of items in R.java is as follows:
public static final int button_buy=0x7f020000;
public static final int button_search=0x7f020001;
public static final int cover=0x7f020002;
...
public static final int Artist_name=0x7f05000e;
public static final int Artist2_name=0x7f05001c;
public static final int Artist2NameLabel=0x7f05001d;
How is that generated? Are the numbers important? Would everything work now (and in future versions?) if I simply started on zero, and counted my way through them?
public static final int button_buy=0x00000000;
public static final int button_search=0x00000001;
public static final int cover=0x00000002;
...
public static final int Artist_name=0x00000003;
public static final int Artist2_name=0x00000004;
public static final int Artist2NameLabel=0x00000005;
回答1:
You can use ant scripts to build your project. R.java will be generated automatically as if you use "Clean project" option in Eclipse.
Read more here: http://developer.android.com/tools/projects/projects-cmdline.html
I wouldn't recommend to mess around with R.java file directly.
来源：https://stackoverflow.com/questions/12839596/manually-generate-r-java