Android app crashes after SDK-tools update version (NoClassDefFound, tool version 22)

Question

I have just updated my android SDK tools to the newly released version (tools version 22, platform tools version 17)

java.lang.NoClassDefFoundError

The .classpath file was modified. The update in added a line :

<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.DEPENDENCIES"/>

Before the SDK tools update, all my projects worked well !!

I corrected my problem in this way :

• In the project properties (eclipse) -> java build path -> order and export make sure that all your jars in the libs folder are checked.
• And "Android Tools -> Fix Project Properties"
• And "Project -> Clean"

But I don't understand why! Would anybody have an explanation ?

Answer 1

I fixed it by going into Java Build Path > Order and Export tab.

Click everything in the list "Android Private Libraries".

Then "Project -> Clean". That fixed my issue.

Just over 1.5 days on this issue, solved my problem by reading Google+ .

Answer 2

Had the same issue as StylezSoft. To clarify even further, below is my Java Build Path from Eclipse after that I solved the issue (by ticking the android-support-v4.jar library)

Then I cleaned the Project (Project > Clean... > OK) and everything worked fine.

Answer 3

I had a similar issue after the upgrade. The problem in my case was that the android-support-v4.jar library had become unchecked in the Order and Export- list. Check + rebuild solved it for me.

The error manifested itself by crashing the app when opening a dialog with a Facebook LoginButton widget on it.

Answer 4

Also need to make sure the Android Dependencies is checked in the Order & Export tab. Both are needed when using other library projects.

Answer 5

I had similar issue, following two steps fixed it:-

1. Java Build Path -> Order and Export tab.

2. Then "Project -> Clean".

Answer 6

我用Android工具 - >添加支持库解决了这个问题

Answer 7

I had similar issue. But the problem was jar mismatch of "android-support-v4.jar" between Facebook SDK and my application. When I copied the same jar file from Facebook SDK to my application lib folder, the issue was resolved.

Answer 8

I ran into this on Android Studio. Since most of the answers here are for Eclipse, here's how to add the supportv4 library on Android Studio:

1. Build -> Edit Libraries and Dependencies
2. Click the + button
3. Select the support-v4 library
4. Click OK.

That's it.

Answer 9

Solutions:

1. Check Exports Order
2. Enable Multi Dex
3. Check api level of views in layout. I faced same problem with searchView. I have check api level while adding searchview but added implements SearchView.OnQueryTextListener to class file.
4. Check support Libraries v4,v7 etc