Refactoring Concept in Android Studio Tutorial Video Lecture | How to Design UI in Android Studio

[Applause]
hey everyone this is anger risky and
good morning from Indonesia in this
video I'm going to show you about the
concept of the programming in Java so
people's a good software developer
called it don't repeat yourself
alright so we got to create new activity
or new class that profit our string so
we can use this string whenever we want
whenever whenever we need the another
activity so we can call it the class and
if you have one error
you just need change one you don't need
change for everything in the pages okay
so here we need to create new Java class
which is quote put okay and here we
already have class which is code book
that profit our components our values
which is string and fax alright now I'm
going to show you how it works just
select this preface again you can cut by
comment X or ctrl X and then go in color
code book and pass alright so right here
we already have the are either profit
many all right here
and now we need to create the method so
when I click the button this button
profits for the another awry alright so
here string get sorry get caught okay
and we're going back to the main
activity and as you can see here this is
the function so if this is the source
code for get another quad so
we're going to sell it all of this and
cut and go back to cookbook and we can
pass here okay so in this case we will
use the written facts random number
alright it's pretty simple it's done and
how to use this it's pretty easy we go
to Meg Nativity and we need to plot our
jatha so here we need to define new
variable which is quote book and quote
book new quad - cool so here we create
new variable which is code book and this
is the length of variable and we check
it from this code and here I think I
want to cut it first just cut and make
it clean practice okay and I will press
here so this is for the background and
this is for the quad okay so I'm trying
to make it understand and writable
so right here we want to solve the the
another code so we just need to create a
new variable again which is new quad and
quad to get good okay we take it what
book from this and this has a method
which is get caught and we take a lot
them to the code book you can see we
have get
got here which is the source code you
can check the day another fixed by
randomly here using the random and we
draw the function the method here and
here we just need two new quad alright
so this is pretty simple we save the
quads right here and we can use this
class whenever you want wherever we want
maybe you already have
when activity and you have different
activity yeah you just need to allot
this preferred quad and get the new quad
book and you just need to copy this
source code and you can easily alright
so we will have to test run our
application to the emulator
alright waiting for the minutes
okay we're going to test it is this
working or not okay it's working pretty
cool isn't it yeah I really really like
it
okay so basically this is the concept of
software development which is don't
repeat yourself so all of data has
another Java class that you can profit
for the another data and the question is
can we use it for the color yes you can
you just need to repeat our step by
creating your Java file and copy it
color color book and then you can not
hit again and you can copy it right here
you can call the metal tracker
Expedia gee it's not big different from
the quad okay well thank you very much
for watching this video and I hope you
understand about what kind of about what
I mean right here because it's really
really important to software development
click go
so right now I want to say goodbye bye