Solve: The import android.support.v7 cannot be resolved

The import android.support.v7 cannot be resolved

Solution:
Add Android Support Library "android-support-v7-appcompat.jar"
Follow the following steps:


1. Open the Project Proprieties (Alt+Enter), and Click "Add External JARs..."

2. Navigate to Android Support Library direction "sdk\extras\android\support\v7\appcompat\libs" and Select "android-support-v7-appcompat.rar", then Click Open

Note: If you didn't have this directory under SDK, you should update your SDK from manager

3. It should be work now