Caused By: Java.lang.illegalstateexception: Package Not Installed?

06-26 05:07:17.890: E/AndroidRuntime(3231): FATAL EXCEPTION: main 06-26 05:07:17.890: E/AndroidRuntime(3231): Process: com.sample.calendar, PID: 3231 06-26 05:07:17.890: E/AndroidR

Solution 1:

I think this happens when you run the app from eclipse while you already have the previous version installed ? This won't happen if you uninstall the app before running it again from eclipse. Also, this won't cause any problems.

Solution 2:

Try using older gradle dependencies version in you build.gradle file. It helped me.

Use:

compile'com.android.support:appcompat-v7:23.1.0'compile'com.android.support:design:23.1.0'

Don't use:

compile'com.android.support:appcompat-v7:23.2.0'compile'com.android.support:design:23.2.0'

I find solution here - Android Studio FloatingActionButton error