why is there content_main.xml and activity_main.xml by default instead of just activity_main.xml?

Question

I have just begun learning Android App development. I have Android Studio 1.4. In my layout folder I have two XML files (content_main.xml and activity_mai

Answer 1

As I know, there must be include statement in your activity_main.xml file as follows :

that means it is calling the content_main.xml which has actual elements to be hold.

There will be no problem if you cut and paste all the content of content_main.xml file and paste it in activity_main.xml file in place of include statement(tag). You can delete your content_main.xml after doing as above.

In your activity setContentView() statement should be look like as below :

setContentView(R.layout.activity_main);