android eclipse problem with R.java

Question

Suddenly my Android app is compiling with loads of errors in Eclipse. When I use Project-Clean the console shows it processing until 'Writing symbols for class R' then it pauses for around a minute and finishes with 'Nothing to pre compile' This behaviour follows adding several new strings to my strings.xml and replacing strings in the code with :-

getResources().getString(R.string.name of string);

Any ideas? Would it be safe to delete the R.java file to force it to rebuild perhaps?

Answer 1

I faced a similar issue. I had missed putting a plus sign in android:id="@+id/GoTo". Everything was fine after I put back the missing plus sign, cleaned and rebuilt the project.

Answer 2

Check if you import the right R file. It should be your projects file, not android.R .

Answer 3

Maybe your listing is not exact code but if it is, then resources names can't contain spaces. (I am talking about R.string.name of string )

Answer 4

当您在strings.xml中更改某些内容以保存该文件并重新构建后，当您使用eclipse时非常重要！如果您选中了自动构建选项，那么如果不选择CTRL + S就足够了，那么必须手动重新构建您的R.strings值未进行喷射更新

Answer 5

This is my currently todo list when I have that kind of problem:

1. Refresh main project
2. Clean
3. Build All

if it wont work again. Close Eclipse -> repeat from 1.