Text/Design Tab Missing New Android Project on Android Studio IDE

Question

How can I enable the text/design Tab on the a src/main/res/layout folder on the activity_main.xml file that was created automatically during create new project? If i do righ

Answer 1

On the top right corner of the activity_main.xml file view, there are 3 icons representing "Code", "Split" and "Design". Click on the leftmost icon of the three ("Code") for the text tab.