I am using Android Studio 4.1 and I want to hide the Action Bar. I searched stack overflow, but it seems there are some new methods introduced in Android Studio update of October 2020 since getActionBar().hide(); line method no longer works and app directly crashes. For more clarity, I created a new Project and added nothing else except the getActionBar().hide(); in the onCreate() method. Still the app crashes. My emulator is running on API 30, Android 11 on Pixel 3.
Kindly help.
It doesn't depend by Android Studio.
Since you are using a AppCompatActivity and you have to use getSupportActionBar() instead of getActionBar().
As alternative you can use a .NoActionBar theme, for example.
<style name="AppTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
...
</style>