Android Eclipse - Could not find *.apk

Question

Please follow these steps; this might help you out:

1. Right-click your app project and go to Properties

2. Select Android from left-hand side list

3. Uncheck the "Is Library" checkbox

If your app project relies on library projects which are in your workspace, those of course need to have the "Is Library" box checked.

deleting the R.Java file in /Gen folder did the trick for me

I tried all the above solutions. but it didn't work.

The solution was to restart eclipse !!!!!!!

hope this will help someone :)

In my case this problem started after eclipse updated the plugin with the v4.0 API release. I fixed it by going to the main preferences for Eclipse and under Android->Build uncheck 'Skip packaging and dexing until export or launch'

Note: if you eclipse gives you the Unknown Command 'crunch' error then follow this post

I've tried to gather the best of other peoples answers into a step by step list of things to try in order:

• Check the project is not set as a library:
  1. Go to Project->Properties
  2. Select Android from left-hand side list
  3. Uncheck the "Is Library" checkbox
• Clean and rebuild the project - this should delete and recreate the entire gen folder, including the R.java file mentioned in some peoples answers
• Check eclipse and all the Android plugins are up to date
• Close the project, exit Eclipse, reopen eclipse, reopen the project.
• Go to Java Build Path > Projects and check for any incorrect project dependencies
• Go to the main preferences for Eclipse and under Android->Build uncheck 'Skip packaging and dexing until export or launch'
• Check JAVA_HOME is set correctly. Follow the steps in this article

If you complete the above list, and still haven't solved the issue, please leave a comment, or if you find something else that works, feel free to edit the answer and add your thing in.

Delete the project from your workspace & import again.
This worked for me.

Can't believe similar issue has been there since 2008.
http://code.google.com/p/android/issues/detail?id=834.