How to solve Android Studio rendering problem

Android Studio can't render. After adding components I can't see anything in the screen. here's what i get :

I have the following Error on the screen:



It says:
Render Problem : 
Failed to load AppCompat ActionBar with unknown error.

if you get issue like this please check out solution below, hope that will solve your problem.

SOLUTION:

Go to >> build.gradle(Module: app) : 
DELETE  >> implementation 'com.android.support:appcompat-v7:28.0.0-rc02'
ADD >> implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'  [now it's not working, see the solution below this page]

Then >> Sync now



Just after 3 weeks get the same issue

New Solution :  

this time i change the following things, now it's working.

Go to >> build.gradle(Module: app) : 
replace 'com.android.support:appcompat-v7:28.0.0-alpha1' / com.android.support:appcompat-v7:28.0.0-rc02 with 

implementation 'com.android.support:appcompat-v7:27.1.1'

implementation 'com.android.support:support-v4:27.+'


Also change the compileSdkVersion  & targetSdkVersion  to 27 : 

compileSdkVersion 27
        
targetSdkVersion 27


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