Live - Dog Years in Swift with Xcode Video Lecture | Swift in Xcode: The Complete iOS Development Guide - App Development

hey guys and welcome to my first live
broadcast I'm just gonna do this you
guys if you guys have any questions
during the video be sure to leave that
down in the comment section down below
or in the chat box it'd be very helpful
so let's get started and we're today
we're gonna be programming how to
calculate the dog years
it was Swift in Xcode so this is
actually a popular objective-c tutorial
that was done by people on YouTube me so
I just decided to do this on Swift with
Xcode so let's go ahead and go into
Xcode 6 let's create a new Xcode project
and here we're gonna make it a single
view application out of product name I'm
just gonna call my dog ears and next and
create and now let's go ahead and go
into our main dot storyboard so let's go
into our view controller and lately
they've actually fixed the size thing so
when before when you used to put stuff
on to the main dot storyboard that's why
I never use storyboards really so when
you put stuff on the storyboard that
then it would be like it would be on the
wrong in the wrong place on the view
controller but now they fix that so I'm
just gonna go ahead and use the
storyboard this time so let's go ahead
fix the size and the size we're just
gonna make it an iPhone 4 inch and that
is in our attributes inspector and the
way to do that is just to click on this
top bar up here so just click on this
top bar make it hide a highlighted blue
and change the size to an iPhone 4 inch
all right now let's go ahead and change
the orientation to portrait it was
already portrait but now this is going
to make sure that it will always be
portrait all right now let's go ahead
and click and drag a label on to our
scene and this label is just gonna be a
label saying number of years and this
will always stay the same so we don't
really need to do much to that now this
other label this will be actually be go
right underneath that number of years
and this will be the number of dog years
so let's go ahead and change the label
and make sure it's centered and then
we're gonna make the label just a bunch
of ended integers so the zero zero zero
so on all right now let's go ahead and
add a button on here and this button
will be calculate calculate and lastly
we want to add another label and this
label I'm sorry we don't want to add a
label we want to add a text field so
let's go ahead scroll down and grab a
text field right down here so click and
drag that and just put it in the center
of our scene and click and drag that all
the way out to the edges and now another
thing we can do is we can actually
change the keyboard type that appears
when this is clicked on so let's go
ahead and go into our attributes
inspector and right down here it says
keyboard type and we're gonna make it a
number pad all right now let's go ahead
and I'm gonna raise this up a little bit
just in case the number pad comes over
it a little bit all right so now let's
go into our view controller dot Swift
actually we want to go back to our main
dot storyboard and here we're going to
open up our assistant editor and we're
gonna change this instead of view
controller dot Swift we want to change
it to I'm sorry what am I saying we got
first we need to right click and drag
from our zeros or you can go control
click drag over to our Swift view
controller right over here so control
click drag over to the scene and this
the name we're just gonna call this dog
years label all right now connect up and
now let's go ahead and click and drag
our button and we're just gonna put it
down here and this time our connection
we're gonna change the connection to an
action and our name I'm just gonna call
this calculate all right now lastly we
want to click and drag from our text
field over up to our view controller dot
Swift again and we're gonna make another
outlet and our name will just be text
field and connect
all right now let's go ahead and go into
our view controller dot Swift and close
our assistant editor and first thing we
want to do is go into our calculate read
down here and we want to say text field
dot txt I'm sorry we don't want to say
that we first we want to go up here we
want to create a variable and this very
ill believe will be the doc years so
it's just say far dog years years equals
zero so it's just going to be
automatically set to zero when the scene
loads and then we want our calculate to
change that so let's go ahead and say
dog years equals text field dot text dot
two int and then exclamation point and
then multiplied by seven so we can
calculate the dog years all right now
let's go ahead and change our label so
to say dog years label dot text equals
doc years
exactly like that I'm sorry dog years
dot description exactly like that now
let's go ahead and build and run this
and see what happens
all right so we click on this and as you
can see when you click one two three or
something like that then you just
calculate it multiplies it by seven and
that's eight hundred and sixty-one
or you can just go simpler and just go
one and see that a dog is seven all
right so that's basically how you do a
dog years I'm gonna show you how to
change a couple integers down here so
basically this seven right here is what
it calculates the dog years so if you
want to change that seven that's gonna
change the amount of dog years that
comes in so let's just say multiply by
four so then you build and run that
and then you just go 1 2 3 calculate
than it only multiplies by 4 1 calculate
multiplies by 4 so basically that's how
you do a dog years type of application
with swift in Xcode thank you guys for
joining me and I hope you guys enjoyed
thanks