SingleFragmentActivity error in AndroidManifest

#1

After declaring CrimeListActivity in AndroidManifest, I ran CriminalIntent as instructed on page 175. However, the following error showed up.

Error running SingleFragmentActivity: the activity “SingleFragmentActivity” is not declared in AndroidManifest.xml.

What should I do?

#2

Solved. For whatever reason, Android Studio ran on SingleFragmentActivity, instead of App. It works now.