Android Studio布局视图为空

Question

I create a new project for my android app. But the layout view is all white and empty. This is the image

but compare to what others have

It clearly sees that my layout window does not have a blue title on top, time and battery.

Answer 1

This is a design view only so first run your application and check whether toolbar is there or not.

if its still not coming Go to style.xml and change your theme.

    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">

There are several themes, you can choose accordingly.

Answer 2

Check on Show Layout Decorations from your Activity Design tab. This will fix previews..

Click on the eye icon visible upper side, it'll expand and just check on that item.

Answer 3

the reason is you updated your android studio to 3.3 and I know there is the change that title bar will not visible in android design tab but if you run your app in the emulator or real device it will there

you don't have to change the theme or anything run your app it will be there in your device

I hope this will help you