If you have this error “Unable to instantiate activity ComponentInfo” in the LogCat of Android just you launch your app, first you have to check the file AndroidManifest.xml especially the code lines
- package="[your package]"
it is an attribute of the tag manifest and you insert a unique name for your app in java package style, for example com.example.myapp (see here)
- android:name=".[your activity]"
it is an attribute of the tag activity and you insert the class name that implements the activity (see here)