I had created an app and when tried to run,get an error like this.
ERROR: In MenuView, unable to find attribute android:preserveIco
I fixed the problem by going to the path
E:\adt-bundle-windows\sdk\extras\android\support\v7\appcompat\res\values\attrs.xml and Find "android:preserveIconSpacing"
Then change it, From
attr name="preserveIconSpacing" format="boolean"
To
attr name="android:preserveIconSpacing"
also, remove
format="boolean"