programaconandroidEn 2018-08-18 10:08:05
We gonna create a new project, for after create our first hello world s



1.- Create a new project with empty layout.

2.- Add widgets to layout.
     2.1- Add a TextView with id txtView and empty text.
     3.1- Add a Button with id btnClick and text "Hello, wolrd"; 



 3.- Add evente OnClickListener for update text of TextView.
      3.1.- Declare globar vars.
              * Button btnHello;
              * TextView txtMessage;
      3.2.- Set Vars with the id of the gadgets.
              * txtMessage = (TextView) findViewById(R.id.txtView);
              * btnHellow = (TextView) findViewById(R.id.btnClick);
 



4.- Execute the app.