Class not found error for any glass api

Question

I configure eclipse ADT for glass development successfully.
Then I create a sample project and try to develop google glass card or timelineitem.

when I compile and run, an error occurred from android tuntime

java.lang.NoClassDefFoundError: com.google.android.glass.app.Card

this error also occurring for

com.google.android.glass.timeline.TimelineManager   

Error Log

How can I solve it?

Answer 1

You have to set your project to compile with the Glass GDK.

Make sure you're targeting 15, have the GDK downloaded as per the other answer, and then:

Select your project on the left side of the screen, open project poperties (alt-enter, or right click -> properties), go to Android tab, scroll down to Android 4.0.3, and in that section will be the Glass Development Kit Sneak Peak. Check the box next to this, hit ok and everything should start working.

EDIT:

Just to make sure, your manifest should have this line:

    <uses-sdk
    android:minSdkVersion="15"
    android:targetSdkVersion="15" />

Answer 2

Make sure you are targeting API 15 and that you installed the glass development Kit. See the Picture: