setcontentview in java
In Android the visual design is stored in XML files and each Activity is associated to a design. In setContentView(R.layout.main):- R means Resource layout means design main is the xml you have created under res->layout->main.xml Whenever you want to change the current look of an Activity or when you move from one Activity to another, the new Activity must have a design to show. We call setContentView in onCreate with the desired design as argument. *In short:- We can say it is a method to link our java file with xml file....