There is a potentially confusing configuration setting in JDeveloper, when selecting “Android SDK Location” under “Preferences > ADF Mobile > Platforms > Android”. JDeveloper suggests to select a path like “%Root_Path%/Android/android-sdk”. However, if you select the path as suggested (with the latest version of Android), you will be greeted with the following warning message in JDeveloper: “Unable to locate Android SDK in the specified location %some_path%. Do you want to use the specified Android SDK location anyway?”
This is because the later versions of Android SDK (ADT bundle) moved the SDK Home to the location “Android/android-sdk/sdk” directory. Instead of “Android/android-sdk“, as shown below.

Selecting the proper SDK location, lets you continue error free.