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    java.lang.NoClassDefFoundError: android.support.v4.app.NavUtilsJB
        at android.support.v4.app.NavUtils$NavUtilsImplJB.getParentActivityName(NavUtils.java:125)
        at android.support.v4.app.NavUtils.getParentActivityName(NavUtils.java:302)
        at android.support.v4.app.NavUtils.getParentActivityName(NavUtils.java:281)
        at android.support.v7.app.ActionBarActivityDelegateBase.onCreate(ActionBarActivityDelegateBase.java:142)
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