ANDROID STUDIO
MAKING YOUR FIRST HELLO WORLD APP IN ANDROID STUDIO STEP BY STEP COMPLETE TUTORIAL
WHAT ARE REQUIREMENTS BEFORE STARTING BUILDING YOUR OWN APP?
BEFORE STARTING YOU MUST HAVE FOLLOWING THINGS :
1.MAKE SURE YOU HAVE YOUR OWN PC
2.MAKE SURE YOU HAVE INSTALLED LATEST VERSION OF ANDROID STUDIO ON YOUR PC.
HOW TO BEGIN ?
1.OPEN YOUR PC AND OPEN ANDROID STUDIO
IF YOUR PC IS WORKING GOOD IT WILL OPEN IMMEDIATELY ,IT DEPENDS ON YOUR SYSTEM AND RAM.
DON'T WORRY JUST WAIT A SECONDS...
ONCE THE ANDROID STUDIO LOADS COMPLETELY
WHAT TO DO ?
1.CLICK ON CREATE NEW PROJECT
2.CLICK ON EMPTY ACTIVITY AND CLICK NEXT
3.IF YOU WANT TO NAME YOUR APP, YOU CAN NAME IT HERE AS SHOWN BELOW,
OR YOU CAN CONTINUE WITH DEFAULT NAME .
NOTE : YOU CAN ALSO CHOOSE LANGUAGE IN WHICH YOU WANT TO CODE,
AS FAR NOW WE WILL CONTINUE WITH DEFAULT ONE I.E, JAVA.
4.ONCE THE PROJECT IS LOADED IT WILL SHOW UP LIKE SHOWN BELOW
5.CLICK ON activity.xml, IT WILL SHOW UP DESIGN AND LAYOUT OF APP.
6.LETS MAKE THE DEFAULT HELLO WORLD TEXT LOOK BIGGER AND ALIGN IT IN CENTER.
7.TO ALIGN IT IN CENTER SEARCH GRAVITY IN RIGHT SIDE(MAKE SURE TO SELECT ON TEXTVIEW AND ATTRIBUTES OF IT AS SHOWN BELOW)
8.LETS INCREASE ITS SIZE TO LOOK IT BIGGER, AS SHOWN BELOW
9.NOW LETS ADD A BUTTON IN THIS ACTIVITY :
10.SELECT ON BUTTON AND KEEP LEFT CLICK(OF MOUSE ON CLICKED AND DRAG CURSOR FROM DESIGN(BUTTON) AND PLACE THE CURSOR IN LAYOUT OF APP BELOW HELLO WORLD TEXT.
11.NEXT STEP IS TO BIND CONSTRAINTS TO LEFT, RIGHT, TOP AND BOTTOM AS SHOWN BELOW
12.AFTER COMPLETING BINDING CONSTRAINTS WE CAN MOVE FORWARD.
NOTE : IT IS NECESSARY TO BIND THEM SO THAT IT WILL REMAIN IN ITS POSITION ON DIFFERENT TYPES OF DEVICES.
13.LETS CHANGE THE TEXT OF BUTTON TO OUR OWN WISH.
13.LETS CHANGE THE TEXT OF BUTTON TO OUR OWN WISH.
NOTE : TO SEE BOTH THE LAYOUT DESIGN AND ACTUAL CODE CLCK ON SPLIT AND IT WILL SHOW UP LIKE SHOWN BELOW.
15.LETS CHANGE THE TEXT HELLO WORLD TO MY FIRST APP AS I HAVE CHANGED BELOW:
16.NOW LETS ADD JAVA CODE FOR THE BUTTON WE JUST CREATED ABOVE :
17.CLICK ON MAIN ACTIVITY.
18.NOW LETS INITIALIZE THE BUTTON
19.ADD THE LINE : private Button button; //As shown Below
20.NOW LETS FIND BUTTON BY ID AS:
button = findViewById(R.id.button); //As shown Below
21.NOW LETS ADDING A CLICK LISTENER TO BUTTON(MEANS WHEN THIS BUTTON IS CLICKED WHAT TO DO)
22.BEFORE ADDING INTENT , FIRST WE WILL MAKE ANOTHER ACTIVITY
23.CLICK ON com.yourexample.yourappname
(as in my case it is : com.azakios.myapptest),
after CLICKING ON IT
>> LEFT CLICK ON MOUSE AND SELECT NEW
>>THEN SELECT ACTIVITY
>>AND FINALLY CLICK ON EMPTY ACTIVITY
24.YOU CAN RENAME THIS ACTIVITY OF YOUR OWN CHOICE OR CONTINUE WITH DEFAULT NAME.
>>CLICK FINISH.
25.NOW COME BACK TO MAIN ACTIVITY BY CLICKING AS SHOWN BELOW:
25.NOW COME BACK TO MAIN ACTIVITY BY CLICKING AS SHOWN BELOW:
26.NOW ADDING INTENT TO CLICK LISTENER TO THE BUTTON WE CREATED BEFORE ,
ADD THIS LINE:
Intent intent = new Intent(MainActivity.this,MainActivity2.class);
startActivity(intent);
// use your second Activity Name instead of MainActivity2 as in my case it has this name, so i wrote it)
see below where to Write:
27.NOW LETS CHANGE DEFAULT TEXT OF SECOND ACTIVITY I.E
MAINACTIVITY2 BY CLICKING ON activity_main2.xml AS SOWN BELOW:
28.NOW CHANGING TEXT TO "WORKING" AND WE ARE DONE.
RUN THE EMULATOR DEVICE OR CONNECT YOUR PHYSICAL DEVICE THROUGH USB AND CLICK RUN.
29.ALLOW INSTALL ON YOUR PHONE AND YOU HAVE MADE IT.
IF HAVE ANY ISSUES OR NEED HELP FEEL FREE TO CONTACT US
