android - 已删除 gen 文件夹，eclipse 现在不生成它 :(

Question

我不小心删除了我的 gen 文件夹，现在，不出所料，我的资源都乱七八糟了。我刚刚自己创建了一个 gen 文件夹并尝试 project > clean - 那没有用。尝试右键单击项目并转到 android 工具 > 修复项目属性 - 没有用。尝试自动取消选中构建...没有用。清理、关闭项目、关闭 eclipse、重新启动等等。没有任何工作，我一直看到这个错误:gen 已经存在但不是源文件夹。转换为源文件夹或重命名。

编辑 - OK 能够生成 R.java，但现在我在控制台中得到了疯狂的东西:

[2011-06-14 17:06:11 - fastapp] Conversion to Dalvik format failed with error 1 [2011-06-14 17:06:42 - fastapp] Dx trouble processing "java/awt/font/NumericShaper.class":

Ill-advised or mistaken usage of a core class (java.* or javax.*)
when not building a core library.

This is often due to inadvertently including a core library file
in your application's project, when using an IDE (such as
Eclipse). If you are sure you're not intentionally defining a
core class, then this is the most likely explanation of what's
going on.

However, you might actually be trying to define a class in a core
namespace, the source of which you may have taken, for example,
from a non-Android virtual machine project. This will most
assuredly not work. At a minimum, it jeopardizes the
compatibility of your app with future versions of the platform.
It is also often of questionable legality.

If you really intend to build a core library -- which is only
appropriate as part of creating a full virtual machine
distribution, as opposed to compiling an application -- then use
the "--core-library" option to suppress this error message.

If you go ahead and use "--core-library" but are in fact
building an application, then be forewarned that your application
will still fail to build or run, at some point. Please be
prepared for angry customers who find, for example, that your
application ceases to function once they upgrade their operating
system. You will be to blame for this problem.

If you are legitimately using some code that happens to be in a
core package, then the easiest safe alternative you have is to
repackage that code. That is, move the classes in question into
your own package namespace. This means that they will never be in
conflict with core system classes. JarJar is a tool that may help
you in this endeavor. If you find that you cannot do this, then
that is an indication that the path you are on will ultimately
lead to pain, suffering, grief, and lamentation.

[2011-06-14 17:06:42 - fastapp] Dx 1 error; aborting
[2011-06-14 17:06:42 - fastapp] Conversion to Dalvik format failed with error 1

And eclipse can't resolve the import of my resources import
com.me.fastapp.R;

Answer 1

1. 右键单击您的项目
2. 选择属性。
3. 选择 Java 构建路径
4. 点击添加文件夹
5. 选择gen文件夹
6. 单击“确定”。