I just updated the SDK tools in Eclipse to revision 22, and since then I cannot build my project. Specifically the R class is not recognized in my Activity (I was getting compiler errors) and even when I imported manually, again the import was not working.
Additionally the project gen
folder is empty, and cleaning the project/workspace (having build automatically
option on) didn't make any difference.
Is this a known issue? Did it happen to everyone? Is there a workaround? Maybe Google just wants us to switch to Android platform the soonest possible?
Quick fix: Go to the Tools –> SDK manager –> SDK tools. Deselect Hide obsolete packages option on the right bottom and further install Android SDK Tools(obsolete). A new folder named Tools is now generated in the SDK directory.
Navigate to “Appearance & Behavior” > “System Settings” > “Android SDK” and now you can see the SDK versions that were installed in the “API Level” and “Name” columns (focus on “API Level”).
To open the SDK Manager from Android Studio, click Tools > SDK Manager or click SDK Manager in the toolbar. If you're not using Android Studio, you can download tools using the sdkmanager command-line tool. When an update is available for a package you already have, a dash appears in the check box next to the package.
I had major issues with the update as well. In my case my project uses a library that also depends on another library. I found that I needed to check the box for Android Private Libraries
in the order/export
tab of the Java Build Path for the project - and each of my connected libraries -- to properly compile and run the app on a device.
Some others have indicated that you need to also check Android Dependencies
too but that doesn't seem necessary for my project.
Yes it's right. I had the problem too, there is a new "Android SDK Bild-tools". Open the Android SDK Manager and make a update, maybe twice.
More info:https://groups.google.com/forum/?fromgroups=#!topic/android-developers/rCaeT3qckoE%5B1-25-false%5D
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