Getting "package R does not exist" when building from command-line
Question: I created an activity on a separate project using Eclipse. When I imported it
into my cocos2d-x android project and built the project using `python
build_native.py` (which is basically building the app using the NDK) and `ant
debug`, I get an error saying:

    
    
    error: package R does not exist
    

pointing to the line:

    
    
    setContentView(R.layout.some_activity);
                    ^
    

I have added the `res/layout/some_activity.xml` in my cocos2d-x project as
well as the manifest entries:

    
    
    <application
        <!-- <application> tag info --> >
        <activity
            <!-- cocos2d-x native activity --> >
        </activity>
    
        <!-- the activity I imported -->
        <activity
            android:name="com.mycompany.myapp.SomeActivity"
            android:label="" 
            android:theme="@android:style/Theme.Dialog"
            android:excludeFromRecents="true" 
            android:noHistory="true" 
        />
    </application>
    

I also copied the needed `*.java` files inside the `src` folder (in the exact
same folder structure). I also tried cleaning manually (by deleting the `bin`,
`gen`, `obj`, and `assets` folders) and through `ant clean`. I am not using
Eclipse to build, only from the command-line.

**EDIT** : I also tried adding `import com.mycompany.myapp.R;` as well as
`import com.mycompany.R;` on `SomeActivity.java` but it still didn't fix it.

How do I fix this error? Any other steps I am missing?


Answer: I had to import the cocos2d-x project's package name, not the imported
activity's package name.

For example, if your cocos2d-x project's package name was
`com.mycompany.cocosapp` and your imported activity's package name was
`com.mycompany.myapp`, import `com.mycompany.cocosapp.R` instead of
`com.mycompany.myapp.R`.

