I\'ve always programmed Android with Eclipse and decided to start migrating to Android Studio. I decided to use the same SDK I already had for Eclipse, then:
As pointed out by Tanis.7x, the support library version (23) does not match the targetSdkVersion (22)
You can fix this by doing the following:
In the build.grade
file of your app module, change the following line of code
compile 'com.android.support:appcompat-v7:23.0.0'
To
compile 'com.android.support:appcompat-v7:22.+'
This will use the latest version of the appcompat version that is compatible with SdkVersion 22.