App Development Exam > App Development Videos > Swift in Xcode: The Complete iOS Development Guide > Using Audio (Swift : Xcode)
Using Audio (Swift : Xcode) Video Lecture | Swift in Xcode: The Complete iOS Development Guide - App Development
FAQs on Using Audio (Swift : Xcode) Video Lecture - Swift in Xcode: The Complete iOS Development Guide - App Development
| 1. How can I develop an audio app using Swift in Xcode? |  |
Ans. To develop an audio app using Swift in Xcode, you can follow these steps:
1. Create a new project in Xcode and choose the "Single View App" template.
2. Import the necessary frameworks for audio playback, such as AVFoundation.
3. Set up the user interface for your app, including buttons for play, pause, and stop.
4. Write code to handle the audio playback using AVAudioPlayer or AVPlayer.
5. Implement the necessary methods to control the playback, such as play(), pause(), and stop().
| 2. How can I play audio files in my Swift app? | |
Ans. To play audio files in a Swift app, you can use the AVAudioPlayer class. Here's how you can do it:
1. Create an instance of AVAudioPlayer and initialize it with the URL of the audio file.
2. Set up the necessary properties, such as volume and numberOfLoops.
3. Call the play() method to start playing the audio.
4. Optionally, implement delegate methods to handle events like audio playback completion or errors.
| 3. Can I record audio using Swift in Xcode? | |
Ans. Yes, you can record audio using Swift in Xcode. Here's how you can do it:
1. Import the AVFoundation framework.
2. Create an instance of AVAudioRecorder and set its properties, such as the output URL and audio format.
3. Set up the necessary audio session using AVAudioSession and request permission to access the microphone.
4. Call the record() method on the AVAudioRecorder instance to start recording.
5. Optionally, implement delegate methods to handle events like recording interruption or completion.
| 4. How can I add audio effects to my Swift app? | |
Ans. To add audio effects to your Swift app, you can use the AVAudioEngine framework. Here's how you can do it:
1. Import the AVFoundation framework.
2. Create an instance of AVAudioEngine and connect it to the audio player or recorder.
3. Create and attach audio effect nodes, such as AVAudioUnitReverb or AVAudioUnitDelay, to the audio engine.
4. Set the desired parameters for the audio effects, such as reverb time or delay time.
5. Call the start() method on the AVAudioEngine instance to start processing the audio with the added effects.
| 5. How can I play audio in the background in my Swift app? | |
Ans. To play audio in the background in your Swift app, you need to configure the necessary background modes and audio session category. Here's how you can do it:
1. Open your app's Info.plist file and add the "Required background modes" key.
2. Add the "audio" value to the "Required background modes" key.
3. Set the desired audio session category using AVAudioSession.
4. Activate the audio session using the setActive(_:options:) method.
5. Configure your audio player accordingly, making sure it continues playing even when the app is in the background.
Text Transcript from Video
hey everybody today I'm going to be
showing you how to pause play restart
and stop audio files inside of your
application with Swift in Xcode so let's
go ahead and get started alright so I
have some audio files that I want to
play
so this first audio file is going to
happen when I click my button and then
the second audio file will be played as
soon as my background loads or when the
view loads
so those are the audios that I'm going
to be working with in this tutorial we
have a short one and a long one so let's
go ahead and open up Xcode create a new
Xcode project and this is going to be a
single View application click Next
our product name I'm going to call this
audio our language will be set to swift
and our devices will be set to iPhone
click Next and create alright now I'm
going to make this a bit bigger and
first thing we need to do is go inside
of our main dot storyboard and we're
going to add a button onto our scene so
go ahead click and drag a button onto
our scene our viewcontroller and this
first button we're just going to call
this play audio so this is going to be
the one that actually loads the button
like when the button is pressed it's
going to play that audio and then we're
going to also have a play pause and
restart button down here so go ahead add
a pause button pause slash play button
so let's say play our pause this will
first say pause because well this is
actually going to manipulate the
background music and then we have our
second button and this will be re start
and lastly we have a third button and
this is going to be our stop now basic
this stop basically this stop button
right here actually makes it restart to
the back beginning but it completely
stops the file and pause it keeps it in
the same place but it doesn't go back to
the beginning but it pauses it still
stops the music but it stays in the same
place and then this restart goes
straight to the beginning but it keeps
on playing alright so now we have those
audio those buttons all set up let's go
ahead and open up our assistant editor
it looks like two little circles up here
in the top right corner and we want to
right click or control click and drag
from our pause button
and then this will go up here and this
is going to be an outlet and the reason
I'm doing an outlet for this button is
because we're going to be switching
between pause and play so we're going to
say outlet and this is going to be pause
play this will be our pause play button
now we need to right-click or control
click and drag from our play audio
button and this is going to be an action
and this is going to be called play
audio will say play audio one you guys
can call that whatever you want it
doesn't really matter what these
functions are called but just be sure to
use them correctly inside of your
application
all right now right-click or control
click and drag from our stop button over
to our IB over to our
viewcontroller.swift file this is going
to be an action and our name of this one
will just be stop and then connect and
lastly we're going to have a restart
button so right click or control click
and drag from our restart button just
down there and we're going to make the
connection type action and then our name
of this will just be restart and then
connect and also just in just an
important thing that you need to realize
is when you were when you're hooking up
this action you can also have different
events so when this is dragged when this
is la-dee-da you can do whatever you
want right now this is when it's touched
up inside so this is actually the
natural response so you can touch it and
then as soon as you let go of the button
then it automatically stops restarts or
plays the audio that is its natural
setup because that's the most natural
way of doing it but you can always
change that around all right so now
right up here we want to create a URL
and this URL is actually going to allow
us to grab these audio files that I have
and place that into inside of an audio
player so we can listen to the audio
itself and use the devices that are
included on inside of our
are inside of the iPhone so we can
actually utilize the speakers on the
iPhone for our own audio so first thing
we need to do is just save our and this
is going to be a button audio URL and
then colon and this is going to or we
could actually just say equals n s NS
URL open open parentheses file URL with
path this is going to be NS bundle main
bundle dot path dot path for resource
and the path for resource is going to be
the name of your audio file so let's go
ahead and add our audio files inside of
our application so I have these two
right here we want to write and we just
want to click and drag those into our
supporting files and I'm actually going
to place this inside of another file
which is going to actually hold the
music that we have so I'm going to
create a new group and then add these
audio files inside of that group and I'm
going to change the name of this new
group to just be music alright so now we
have our music stored up inside of this
music file so go back over to our
viewcontroller.swift and close our
assistant editor and we are going to and
I'm actually going to make this text a
bit bigger for you guys so you guys can
see it a bit better so click on it so
we're going into preferences fonts and
colors and we're going to change the
size of this to just the we'll say 18
because I think that's a reasonable size
and you guys should be able to see that
a bit better so we created our outlets
down--he outlet up here and our actions
down here or our functions down there
and then now we're creating our URL
which is going to hold this audio so
path for resource and this resource is
just going to be a button audio it's the
name of your file right before the dot
so right now it's button audio dot Wow
so you forget about the dot in anything
before that
is actually the name of your resource
and then it's going to be of type and
then you want to say open quotation mark
close quotation mark it's going to be
the type of a web file so just go WAV
now if you have an mp3 it would mp3 mp3
or anything like that so after that we
want to add exclamation point and after
this whole thing we need to instantiate
it so it can just sit actually we don't
need an exclamation point there alright
so what we're doing there is we're
creating a URL and we have a file the
path for the file is going to be inside
of this bundle or the bundle that we
have right over here it's going to be
somewhere inside of this bundle and
we're grabbing it the name of it and
then the web file so now we were
actually grabbing this exact music file
right there alright now let's actually
play this audio so up here we want to
import our avfoundation
so just say import av foundation and
this holds the code that will allow us
to utilize the speakers on our iPhone
now this actually might not work
properly because we haven't imported our
framework which is the AV foundation
framework it's not showing any errors
but it might not work properly on your
actual device so go ahead and click on
your audio project up here go to build
phases and be sure you're selected on
targets or you won't see you'll be
selected on this target right here or
else you won't see this build phases
section go up here go down here to link
binary with libraries and we're going to
add the framework AV foundation and add
that now we have this AV foundation
framework and you can see it over here
so over here we have all these headers
and these headers actually hold if we go
look into these they hold all the things
that are going to be actually grabbing
our speaker system so let's go ahead and
close all that those and we want to go
into our viewcontroller.swift file again
and we want to create a variable and
this will be our audio player so you can
just say button audio player
equals R equals audio player or AV audio
player so our AV audio player and then
open bracket contents of URL and then we
just want to type in the name of this
URL that we have right here that we just
created right up here so we're just
going to say button audio URL and then
error we don't want anything to show if
there's an error so we're just going to
say nil and actually this is not going
to work properly so we want to actually
you actually want to do this a bit
different so let's go ahead and just
copy and paste that what we just created
and go into review did load and then
just erase the variable right there and
now I actually don't erase the VAR we
actually want to just copy and paste
this first part we don't want the
contents of URL part because for because
this is chest instantiated right above
here meaning that we can't really call
it from something that's just right
underneath it so it's not going to work
properly so we need to go right down
here and we were going to save our
button audio player equals AV audio
player open parentheses close
parentheses so that will actually just
create this and then right down here you
want to erase this bar part of it so
we're calling that exact same button
audio player that we created right up
there so now we have this audio file and
now if we were to build and run this
first of all nothing would happen so
let's go ahead and make something happen
so right down here and your play audio
one you just want to say audio player or
I guess this would be button audio
player play so now let's build and run
and if we don't have any errors it
should build properly to the point that
when we click on our play audio button
our audio should play and also we need
to move those buttons around a bit
so click on play audio and there you
have it we have our button audio dot web
file playing as soon as that button is
clicked so there you have it that is how
you play audio and now we actually want
to stop it so this will this stop button
is actually going to work with the
background audio so let's go ahead and
set up our background audio and we're
actually going to set up our background
audio of a very quite different light so
we're going to save our background audio
equals audio or a B audio player open
quotation mark and this is going to be
content sub URL and you can just say
nsurl file with URL path and this is
going to be the path of an NS bundle now
if you don't already notice what I'm
doing right here basically I'm Cooke I'm
making this so it's all one line and I
like this about this so you don't really
have to have three lines just to say
where you you don't have to have one two
and then you have this third line right
here just to say play audio so I'm doing
this now I could actually do this with
right this one right up here and switch
it around I will do that in just a
minute but right here we have this but
background audio file URL with path then
we go dot path for resource and the name
of this is going to be our whatever we
named it over here background audio mp3
so just type in background audio and
this is going to be of the type mp3 and
then we're going to say error nil and I
forgot to add this exclamation point
right there so you want to write after
our path for resource part right there
and I'm actually yet that that's where
you would put it it's right after this
parenthesis right there and just before
this one where it goes off and it says
error nil so as you could see this
actually right over here we're going to
we're adding the
audio URL just straight inside of that
one line of code so now we can actually
call that background audio a lot easier
instead of having it just built in the
viewdidload so that I like doing it this
way a lot better so now we can actually
just go down here and we don't even need
this viewdidload part for our background
audio anymore and we can just go inside
of our viewdidload we can just say
background audio not play and there you
have it that's a simple one-line way of
doing things so we're going to do this
with our button audio and we're going to
say VAR button audio player equals AV
audio player open parenthesis and the
contents of URL and we're just going to
copy and paste this whole part right
over here inside of our contents of URL
file and we're going to say error nil
then just erase this variable that we
have right up here and erase this line
that we have inside of our buted load
and now that makes it a lot easier for
us to call things a bit later so now if
we were to build and run this we would
actually have our background audio
playing as soon as the view loads
so now that that works so now we're
going to actually make that audio stop
so right down here in our stop file you
want to say a background audio dot stop
right now this stop file if you actually
used it right now it would actually be
more like a pause
so whenever from this to be more like a
stop where it actually restarts it back
to the beginning but doesn't play it you
want to say background audio current
time equals zero so we reset we're
resetting this background audio time
back to zero and that's going to restart
it now instead of in now that that's
over with now we need to actually
restart this and we're going to say
background audio dot stop then we're
going to have a background audio dot
current time is back at zero and then
right after that we're going to say
background audio dot play so now if we
were to build and run this so we can say
stop it stops it and then if you click
restart it plays it back to be beginning
all right and now we need to pause that
so now let's go ahead and I forgot to
add the pause in the pause a function
that we're going to use so let's go
ahead and add that so I'm just going to
go down here make it a bit bigger and
we're going to right-click or control
click and drag from pause over to our
view controller dot Swift and add an
action
this action will be pause pause play so
now connect so first thing we need to do
is actually say if
so if the audio is playing so if a
background audio dot playing is equal to
yes or is equal to true sorry is equal
to true then we want stuff to happen if
it's not playing then we want this other
thing to happen so just go open open
curly braket close curly bracket or is
equal equal to true because equals and
equal equal equal is a comparison
statement whereas equal is actually just
transferring and for instance we were
changing this thing we're changing the
current time over to zero whereas we're
not comparing it to zero all right so
now we need to say backward if the audio
is playing we need to say background
audio dot stop and then we also need to
change our bet our pause play button
time to B so just say pause play text or
title dot title or sorry pause play dot
set title I keep spelling this wrong
pause play dot set title to be we're
going to make this play so when it's
when you click pause it's going to turn
it back to play and this is going to be
the confer the control state UI control
state dot normal like so so now when
this is just sitting there
after you click pause it when it's just
sitting there it's going to be saying
the text play so now we're actually
going to do this with our play button
and we're going to say play on or this
is going to be background audio dot play
so now when we when we click the play
button it's going to play and then it's
going to turn the text back to pause so
let's say pause play dot set title open
quotation mark close quotation mark and
this is going to be
and this is for the state UI control
state dot normal again so this is when
the button is just sitting there it's
going to say pause so let's go ahead
play this audio we have this now we can
pause the background audio and play it
again
it keeps it in that same position then
we can keep playing it
click stop it stops it and also that's
another thing we need to do so when we
click on stop we actually want this to
be going back to this play we want our
pause button to go back to play so you
can easily do that just by saying pause
play set title to be play and again this
is for the UI control state dot normal
so now if we were to click to stop it
would act it would automatically change
the title of our button so click stop
changes it to play and now we can click
play and it goes back to the beginning
and plays it again and we've set click
pause and we can play and then restart
goes back to the beginning so that is
how you mess around with audio inside of
inside of Swift in Xcode so I hope you
guys enjoyed this tutorial and also this
play audio button right up here works as
well alright and that is that's it for
manipulating all of these audios
themselves now I'm going to fix the
error that we have right here where it's
actually just going off the screen so
let's right-click or control click and
drag from our play audio and I'm going
to center horizontally in center and
then Center vertically and we're going
to do that with all of these the buttons
right click or control click and drag
from our restart button and
that's going to be a repose paws button
Center horizontally and then Center
Center vertically click on her stop
button Center horizontally and then
Center vertically and now if we built
and ran this right now
you would actually Center up inside of
our view controller in a way so now we
have pause play stop play restart there
you go guys that's it for this tutorial
I hope you guys enjoyed it that's it for
this tutorial if you guys enjoyed it be
sure to hit that like button down below
if you guys want to see more tutorials
like this for me in the future be sure
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any questions or comments be sure to
leave that down in the comment section
down below and if you guys want to know
more about me be sure to check me out on
Twitter and other social media links
down in the description down below but
anyway guys thank you guys so much for
watching and I will see you in the next
one
Swift with Xcode Avery
showing you how to pause play restart
and stop audio files inside of your
application with Swift in Xcode so let's
go ahead and get started alright so I
have some audio files that I want to
play
so this first audio file is going to
happen when I click my button and then
the second audio file will be played as
soon as my background loads or when the
view loads
so those are the audios that I'm going
to be working with in this tutorial we
have a short one and a long one so let's
go ahead and open up Xcode create a new
Xcode project and this is going to be a
single View application click Next
our product name I'm going to call this
audio our language will be set to swift
and our devices will be set to iPhone
click Next and create alright now I'm
going to make this a bit bigger and
first thing we need to do is go inside
of our main dot storyboard and we're
going to add a button onto our scene so
go ahead click and drag a button onto
our scene our viewcontroller and this
first button we're just going to call
this play audio so this is going to be
the one that actually loads the button
like when the button is pressed it's
going to play that audio and then we're
going to also have a play pause and
restart button down here so go ahead add
a pause button pause slash play button
so let's say play our pause this will
first say pause because well this is
actually going to manipulate the
background music and then we have our
second button and this will be re start
and lastly we have a third button and
this is going to be our stop now basic
this stop basically this stop button
right here actually makes it restart to
the back beginning but it completely
stops the file and pause it keeps it in
the same place but it doesn't go back to
the beginning but it pauses it still
stops the music but it stays in the same
place and then this restart goes
straight to the beginning but it keeps
on playing alright so now we have those
audio those buttons all set up let's go
ahead and open up our assistant editor
it looks like two little circles up here
in the top right corner and we want to
right click or control click and drag
from our pause button
and then this will go up here and this
is going to be an outlet and the reason
I'm doing an outlet for this button is
because we're going to be switching
between pause and play so we're going to
say outlet and this is going to be pause
play this will be our pause play button
now we need to right-click or control
click and drag from our play audio
button and this is going to be an action
and this is going to be called play
audio will say play audio one you guys
can call that whatever you want it
doesn't really matter what these
functions are called but just be sure to
use them correctly inside of your
application
all right now right-click or control
click and drag from our stop button over
to our IB over to our
viewcontroller.swift file this is going
to be an action and our name of this one
will just be stop and then connect and
lastly we're going to have a restart
button so right click or control click
and drag from our restart button just
down there and we're going to make the
connection type action and then our name
of this will just be restart and then
connect and also just in just an
important thing that you need to realize
is when you were when you're hooking up
this action you can also have different
events so when this is dragged when this
is la-dee-da you can do whatever you
want right now this is when it's touched
up inside so this is actually the
natural response so you can touch it and
then as soon as you let go of the button
then it automatically stops restarts or
plays the audio that is its natural
setup because that's the most natural
way of doing it but you can always
change that around all right so now
right up here we want to create a URL
and this URL is actually going to allow
us to grab these audio files that I have
and place that into inside of an audio
player so we can listen to the audio
itself and use the devices that are
included on inside of our
are inside of the iPhone so we can
actually utilize the speakers on the
iPhone for our own audio so first thing
we need to do is just save our and this
is going to be a button audio URL and
then colon and this is going to or we
could actually just say equals n s NS
URL open open parentheses file URL with
path this is going to be NS bundle main
bundle dot path dot path for resource
and the path for resource is going to be
the name of your audio file so let's go
ahead and add our audio files inside of
our application so I have these two
right here we want to write and we just
want to click and drag those into our
supporting files and I'm actually going
to place this inside of another file
which is going to actually hold the
music that we have so I'm going to
create a new group and then add these
audio files inside of that group and I'm
going to change the name of this new
group to just be music alright so now we
have our music stored up inside of this
music file so go back over to our
viewcontroller.swift and close our
assistant editor and we are going to and
I'm actually going to make this text a
bit bigger for you guys so you guys can
see it a bit better so click on it so
we're going into preferences fonts and
colors and we're going to change the
size of this to just the we'll say 18
because I think that's a reasonable size
and you guys should be able to see that
a bit better so we created our outlets
down--he outlet up here and our actions
down here or our functions down there
and then now we're creating our URL
which is going to hold this audio so
path for resource and this resource is
just going to be a button audio it's the
name of your file right before the dot
so right now it's button audio dot Wow
so you forget about the dot in anything
before that
is actually the name of your resource
and then it's going to be of type and
then you want to say open quotation mark
close quotation mark it's going to be
the type of a web file so just go WAV
now if you have an mp3 it would mp3 mp3
or anything like that so after that we
want to add exclamation point and after
this whole thing we need to instantiate
it so it can just sit actually we don't
need an exclamation point there alright
so what we're doing there is we're
creating a URL and we have a file the
path for the file is going to be inside
of this bundle or the bundle that we
have right over here it's going to be
somewhere inside of this bundle and
we're grabbing it the name of it and
then the web file so now we were
actually grabbing this exact music file
right there alright now let's actually
play this audio so up here we want to
import our avfoundation
so just say import av foundation and
this holds the code that will allow us
to utilize the speakers on our iPhone
now this actually might not work
properly because we haven't imported our
framework which is the AV foundation
framework it's not showing any errors
but it might not work properly on your
actual device so go ahead and click on
your audio project up here go to build
phases and be sure you're selected on
targets or you won't see you'll be
selected on this target right here or
else you won't see this build phases
section go up here go down here to link
binary with libraries and we're going to
add the framework AV foundation and add
that now we have this AV foundation
framework and you can see it over here
so over here we have all these headers
and these headers actually hold if we go
look into these they hold all the things
that are going to be actually grabbing
our speaker system so let's go ahead and
close all that those and we want to go
into our viewcontroller.swift file again
and we want to create a variable and
this will be our audio player so you can
just say button audio player
equals R equals audio player or AV audio
player so our AV audio player and then
open bracket contents of URL and then we
just want to type in the name of this
URL that we have right here that we just
created right up here so we're just
going to say button audio URL and then
error we don't want anything to show if
there's an error so we're just going to
say nil and actually this is not going
to work properly so we want to actually
you actually want to do this a bit
different so let's go ahead and just
copy and paste that what we just created
and go into review did load and then
just erase the variable right there and
now I actually don't erase the VAR we
actually want to just copy and paste
this first part we don't want the
contents of URL part because for because
this is chest instantiated right above
here meaning that we can't really call
it from something that's just right
underneath it so it's not going to work
properly so we need to go right down
here and we were going to save our
button audio player equals AV audio
player open parentheses close
parentheses so that will actually just
create this and then right down here you
want to erase this bar part of it so
we're calling that exact same button
audio player that we created right up
there so now we have this audio file and
now if we were to build and run this
first of all nothing would happen so
let's go ahead and make something happen
so right down here and your play audio
one you just want to say audio player or
I guess this would be button audio
player play so now let's build and run
and if we don't have any errors it
should build properly to the point that
when we click on our play audio button
our audio should play and also we need
to move those buttons around a bit
so click on play audio and there you
have it we have our button audio dot web
file playing as soon as that button is
clicked so there you have it that is how
you play audio and now we actually want
to stop it so this will this stop button
is actually going to work with the
background audio so let's go ahead and
set up our background audio and we're
actually going to set up our background
audio of a very quite different light so
we're going to save our background audio
equals audio or a B audio player open
quotation mark and this is going to be
content sub URL and you can just say
nsurl file with URL path and this is
going to be the path of an NS bundle now
if you don't already notice what I'm
doing right here basically I'm Cooke I'm
making this so it's all one line and I
like this about this so you don't really
have to have three lines just to say
where you you don't have to have one two
and then you have this third line right
here just to say play audio so I'm doing
this now I could actually do this with
right this one right up here and switch
it around I will do that in just a
minute but right here we have this but
background audio file URL with path then
we go dot path for resource and the name
of this is going to be our whatever we
named it over here background audio mp3
so just type in background audio and
this is going to be of the type mp3 and
then we're going to say error nil and I
forgot to add this exclamation point
right there so you want to write after
our path for resource part right there
and I'm actually yet that that's where
you would put it it's right after this
parenthesis right there and just before
this one where it goes off and it says
error nil so as you could see this
actually right over here we're going to
we're adding the
audio URL just straight inside of that
one line of code so now we can actually
call that background audio a lot easier
instead of having it just built in the
viewdidload so that I like doing it this
way a lot better so now we can actually
just go down here and we don't even need
this viewdidload part for our background
audio anymore and we can just go inside
of our viewdidload we can just say
background audio not play and there you
have it that's a simple one-line way of
doing things so we're going to do this
with our button audio and we're going to
say VAR button audio player equals AV
audio player open parenthesis and the
contents of URL and we're just going to
copy and paste this whole part right
over here inside of our contents of URL
file and we're going to say error nil
then just erase this variable that we
have right up here and erase this line
that we have inside of our buted load
and now that makes it a lot easier for
us to call things a bit later so now if
we were to build and run this we would
actually have our background audio
playing as soon as the view loads
so now that that works so now we're
going to actually make that audio stop
so right down here in our stop file you
want to say a background audio dot stop
right now this stop file if you actually
used it right now it would actually be
more like a pause
so whenever from this to be more like a
stop where it actually restarts it back
to the beginning but doesn't play it you
want to say background audio current
time equals zero so we reset we're
resetting this background audio time
back to zero and that's going to restart
it now instead of in now that that's
over with now we need to actually
restart this and we're going to say
background audio dot stop then we're
going to have a background audio dot
current time is back at zero and then
right after that we're going to say
background audio dot play so now if we
were to build and run this so we can say
stop it stops it and then if you click
restart it plays it back to be beginning
all right and now we need to pause that
so now let's go ahead and I forgot to
add the pause in the pause a function
that we're going to use so let's go
ahead and add that so I'm just going to
go down here make it a bit bigger and
we're going to right-click or control
click and drag from pause over to our
view controller dot Swift and add an
action
this action will be pause pause play so
now connect so first thing we need to do
is actually say if
so if the audio is playing so if a
background audio dot playing is equal to
yes or is equal to true sorry is equal
to true then we want stuff to happen if
it's not playing then we want this other
thing to happen so just go open open
curly braket close curly bracket or is
equal equal to true because equals and
equal equal equal is a comparison
statement whereas equal is actually just
transferring and for instance we were
changing this thing we're changing the
current time over to zero whereas we're
not comparing it to zero all right so
now we need to say backward if the audio
is playing we need to say background
audio dot stop and then we also need to
change our bet our pause play button
time to B so just say pause play text or
title dot title or sorry pause play dot
set title I keep spelling this wrong
pause play dot set title to be we're
going to make this play so when it's
when you click pause it's going to turn
it back to play and this is going to be
the confer the control state UI control
state dot normal like so so now when
this is just sitting there
after you click pause it when it's just
sitting there it's going to be saying
the text play so now we're actually
going to do this with our play button
and we're going to say play on or this
is going to be background audio dot play
so now when we when we click the play
button it's going to play and then it's
going to turn the text back to pause so
let's say pause play dot set title open
quotation mark close quotation mark and
this is going to be
and this is for the state UI control
state dot normal again so this is when
the button is just sitting there it's
going to say pause so let's go ahead
play this audio we have this now we can
pause the background audio and play it
again
it keeps it in that same position then
we can keep playing it
click stop it stops it and also that's
another thing we need to do so when we
click on stop we actually want this to
be going back to this play we want our
pause button to go back to play so you
can easily do that just by saying pause
play set title to be play and again this
is for the UI control state dot normal
so now if we were to click to stop it
would act it would automatically change
the title of our button so click stop
changes it to play and now we can click
play and it goes back to the beginning
and plays it again and we've set click
pause and we can play and then restart
goes back to the beginning so that is
how you mess around with audio inside of
inside of Swift in Xcode so I hope you
guys enjoyed this tutorial and also this
play audio button right up here works as
well alright and that is that's it for
manipulating all of these audios
themselves now I'm going to fix the
error that we have right here where it's
actually just going off the screen so
let's right-click or control click and
drag from our play audio and I'm going
to center horizontally in center and
then Center vertically and we're going
to do that with all of these the buttons
right click or control click and drag
from our restart button and
that's going to be a repose paws button
Center horizontally and then Center
Center vertically click on her stop
button Center horizontally and then
Center vertically and now if we built
and ran this right now
you would actually Center up inside of
our view controller in a way so now we
have pause play stop play restart there
you go guys that's it for this tutorial
I hope you guys enjoyed it that's it for
this tutorial if you guys enjoyed it be
sure to hit that like button down below
if you guys want to see more tutorials
like this for me in the future be sure
to subscribe down below if you guys have
any questions or comments be sure to
leave that down in the comment section
down below and if you guys want to know
more about me be sure to check me out on
Twitter and other social media links
down in the description down below but
anyway guys thank you guys so much for
watching and I will see you in the next
one
Swift with Xcode Avery
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Nov 23, 2024 Last updated |
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