Android Studio Cannot Resolve Symbol Appcompatactivity Solutions

Cannot Resolve Appcompatactivity

Android Studio does not recognize the other classes in the same package, it appears in red, however, compile without problems. Displayed after the mouse up there "Cannot resolve symbol XXX", restart Android Studio, sync gradle,Clean build again to no avail.

An error occurred mostly because before Android Studio, some setting problems. Solution is as follows:

Click the menu "File"-> "Invalidate Caches/Restart", and then clicking the dialog box "Invalidate and Restart", emptying the cache and rebooting. Syntax will be highlighted correctly.

"The import android.support.v7 cannot be resolved" and "ActionBarActivity cannot be resolved to a type"

It's a common error "The import android.support.v7 cannot be resolved" on import android.support.v7.app.ActionBarActivity; and "ActionBarActivity cannot be resolved to a type" on extends ActionBarActivity. It may be various reason to cause it. One of the reason is the auto-generated project appcompat_v7 closed.



Cannot resolve symbol 'AppCompatActivity'

Sometimes clearing the android studio caches help.

In android studio I just cleared the caches and restarted with the following option--

File->Invalidate Caches/Restart

Searches related to cannot resolve symbol appcompatactivity

cannot resolve symbol activitycompat
android.support.v7.app.appcompatactivity jar download
cannot resolve symbol support android studio
appcompatactivity error
what is appcompatactivity
how to change dependencies in android studio
appcompatactivity vs activity