By Frank Nimphius-Oracle on Feb 05, 2014
Investigating the issue in which a missing aapt.exe file is reported by JDeveloper after upgrading to the latest ADF Mobile patch I found a bug that fixes a previous problem which was that Google moved the executable file. As a response ADF Mobile now looks in the Android build path for the executable and also allows you to select the build tools location in the ADF Mobile preferences if the executable cannot be found by JDeveloper. If you are on an old version of the Android SDK that does have the aapt.exe file in its original location (the one before Google moved it) you will see the error mentioned in the title of this post.
You can then use the ADF Mobile preferences to search for the build tool, or in addition, use it as a reminder to launch the Android SDK Manager and upgrade to a recent version of the SDK.