App Development Exam > App Development Videos > Swift in Xcode: The Complete iOS Development Guide > Using UIWebViews (HTML : Swift : Xcode)
Using UIWebViews (HTML : Swift : Xcode) Video Lecture | Swift in Xcode: The Complete iOS Development Guide - App Development
FAQs on Using UIWebViews (HTML : Swift : Xcode) Video Lecture - Swift in Xcode: The Complete iOS Development Guide - App Development
| 1. What is UIWebView in iOS app development? |  |
Ans. UIWebView is a class in iOS app development that allows developers to embed web content in their apps. It provides a way to display and interact with web pages and web-based content within an app.
| 2. How do I create a UIWebView in Swift? | |
Ans. To create a UIWebView in Swift, you can use the following code:
```swift
import UIKit
class ViewController: UIViewController {
var webView: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
webView = UIWebView(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height))
view.addSubview(webView)
if let url = URL(string: "https://example.com") {
let request = URLRequest(url: url)
webView.loadRequest(request)
}
}
}
```
This code creates a UIWebView instance, sets its frame to fill the view controller's view, and loads a URL request to display web content.
| 3. How can I interact with web content displayed in a UIWebView? | |
Ans. You can interact with web content displayed in a UIWebView by implementing the UIWebViewDelegate protocol. This allows you to handle various events and actions within the web view, such as page loads, button clicks, and form submissions.
To interact with web content, follow these steps:
1. Set the delegate of the UIWebView instance to your view controller.
2. Implement the necessary delegate methods, such as `webViewDidFinishLoad(_:)` to handle page load completion or `shouldStartLoadWithRequest(_:navigationType:)` to intercept and handle link clicks or form submissions.
By implementing these delegate methods, you can customize the behavior and interaction of the UIWebView with the web content.
| 4. Can I customize the appearance of a UIWebView? | |
Ans. Yes, you can customize the appearance of a UIWebView in various ways. Here are a few options:
- You can modify the background color of the web view by setting its `backgroundColor` property.
- You can hide the scroll bars by setting the `showsVerticalScrollIndicator` and `showsHorizontalScrollIndicator` properties to `false`.
- You can customize the navigation bar and toolbar by embedding the UIWebView in a UINavigationController or UIToolbarController.
- You can apply CSS styles to the loaded web content using JavaScript injections.
These are just a few examples of how you can customize the appearance of a UIWebView. The level of customization depends on your specific requirements and the extent to which you want to modify the web view's default behavior.
| 5. Is UIWebView deprecated in iOS? | |
Ans. Yes, UIWebView is deprecated in iOS 12 and later. Apple recommends using WKWebView instead, which is a more modern and efficient web view implementation available since iOS 8. WKWebView provides better performance, improved security, and a more consistent user experience.
To migrate from UIWebView to WKWebView, you need to update your code to use the WKWebView class and its associated APIs. It is recommended to refer to Apple's documentation and guides for a smooth transition from UIWebView to WKWebView.
Text Transcript from Video
everybody today I'm going to show you
how to use UI web views in several
different ways
so let's get started alright so this
tutorial is going to be structured in
three different ways one I will show you
how to just you to load a website from a
web into a web view with Swift in Xcode
just straight from a website so like
apple comm we're going to load that
straight into a web view secondly I'm
going to show you how to just import a
single line of HTML code and then lastly
just a full page of HTML code so let's
get started by opening it up Xcode and
creating a new Xcode project this will
be a single the application our product
name I am just going to call this a web
view our language will be set to swift
in our devices will be set to iPhone
click Next and create create alright now
let's make this a bit bigger and go into
our main dot storyboard so first thing
we need to do is oh it just click and
drag a webview into our scene like so
and it should grow and fill the whole
scene if not just click and drag it out
to the edges by just clicking and
dragging on these white little dots on
the edge all right now right-click or
control click and drag from that webview
and we're going to go over to our
hierarchy right over here if you can't
see that hierarchy just open it up just
by this little button right down here in
the bottom left corner
so again right-click or control click
and drag from that UI webview over to it
says view right here so just click and
drag that and it will be say equal
widths equal Heights and so we're going
to say equal widths as a constraint then
we're going to equal the heights as a
constraint and then we're going to
Center it vertically and Center it
horizontally so this uiwebview no matter
what screen size iPhone 6 iPhone 6 plus
it will all work this webview will work
properly on every single size device so
let's get started and open up our
assistant editor and right-click or
control click and drag from that webview
over to our view controller dot Swift
file that should open up our connection
type outlet and this is going to be the
name of our webview so I'm just going to
all this webview and connect and let's
go over to our main that's our view
controller dot Swift file and now we're
going to load up our webview load a
website into our webview now this is
very simple first thing we need to do is
open is create our URL so save our URL
so we're creating a variable URL a
variable called URL you can call it
whatever you want and then this is equal
to NS URL open parenthesis and this is
just going to be a string and inside of
the string value open quotation mark
close quotation mark we're going to put
HTTP colon slash slash colon slash slash
this is going to be WWF Capcom and again
this will work properly for any web site
and also you need to make sure that you
have HTTP colon slash slash in front of
whatever website you're trying to load
or else it will not work properly now
let's go down here and we want to say
web view dot load request and the
request that we're loading is an nsurl
request then open court open parenthesis
this is going to be a URL and the URL
will just be the URL that we just
created add an exclamation point at the
end so we can instantiate it inside of
this load request and now we if we were
to build and run this we will have our
website loading up inside of our web
view on our scene perfectly so now we
have archetype com loading up and there
you have it now my web site conforms
automatically to the screen sizes that
you have right here although if you did
have a website that didn't really work
for mobile it would just create a square
aspect ratio or it would fill the entire
screen and you would actually be able to
scroll from left to right between the
whole scene so that's how that works and
now let's go down here over to our web
view load request and again you can see
that Apple comm will
to work in the same fashion Apple calm
now conforms to the whole screen size so
it would actually work just the same as
my website just did so there you have it
and now we're going to go into our HTML
code so just delete whatever we have
right there and we're going to say web
view dot load HTML string and we're
going to at first it gives you this
little blue selection point and we're
just going to trade that out with open
quotation mark close quotation mark our
base URL we're going to say nil and
right over here inside of our open
quotation mark close quotation mark
we're going to add our HTML code so in
order for just to do this you just do
alligator tips alligator tips and we're
going to call this the body then you can
add a bunch of spaces this is where your
text will go and then again close the
body and then close the HTML so now we
have that done and inside of this we can
just say hello hello world so now we
have that and if we were actually to
build and run this right now we will
load our HTML string now obviously this
is very basic I'm not going to go into
programming with HTML but this has at
least going to show you some of the
basics of how to get HTML inside of your
Swift inside of your Swift application
so now we have hello world loading up
properly and you can also add things
such as H 1 and H 1 and closing the h1
now forever to build and run this now
you will see that this is going to give
it a header it's going to make it a bit
bigger so there you have it you can
change things accordingly if you really
want to I'm not going to show you like I
just said but this is the basics now if
you wanted to go more in depth and add
your own file that you have for your
website you can easily do this just by
saying web view got load requests all
right now before we get into this let's
go over here up
our top bar right up here and we're
going to go file new file and this is
going to be an empty file either in iOS
or OSX it doesn't really matter
empty file and click Next our file name
I'm just going to call mine HTML HTML
code dot HTML now it's important to have
this dot HTML in order for this to load
properly so like so the system can
recognize that this is actually an HTML
file now create and now we have our HTML
code HTML right over here and now we can
actually just create our HTML code so
now go down here this will be our body I
guess we needed to add at the HTML first
so let's close out of HTML like so open
up HTML and then inside of this we can
do h1 hello world like so and eight
slash h1 so now we have our HTML code
and let's put this inside of our
application now so now go over to your
view controller dot Swift and we want to
say web view the load request and this
will be an nsurl
request now you might be a bit confused
this is not a URL this is a file so now
let's yeah it was a bit confusing at
first with me too but this it works the
same exact way so this is going to be a
URL and then this will be a file file
URL with path and our path will be our
NS bundle
so our NS bundle is just basically
inside of this project that's basically
what the bundle is dot main bundle again
the whole project NS bundle main bundles
so now inside of this project we want to
find a passport resource so this is
right after main bundle after the
parentheses that we add you want to say
path for path count spell path for
resource and we we want this one where
it has this
name and then of type so the name of
this will be actually the name of your
HTML code the HTML code file that we
created and also make sure it's it's
case sensitive so you want to make sure
that it's HTML code with capital H
capital C and then of type and again
we've in this case we would forget about
the period right in between HTML code
HTML you would just erase that period
and now we're just going to put that as
HTML so now we're loading this request
and also it's going to give you the stop
sign error now basically what this is
saying is you need to instantiate all
these things that you're saying so go
ahead and follow those rules and it will
work properly again it wants one right
after this little bracket right here and
right after this giant bracket right
here so now that what this is doing it's
creating a URL it's finding the URL with
the path name of our bundle I mean again
the bundle is just the whole project and
we're grabbing a path blower resource
and we're grabbing the name of the
bundle or the name of the file that
we're trying to locate and then it's
grabbing that and loading it inside of
our web view so now if we were to build
and run this it will load up our HTML
code inside of our web view so there you
have it we have hello world and you can
of course do many other things with this
in fact let's kind of let's load up a
website that's actually kind of
cool-looking so right up here go over to
Safari we'll just load up a YouTube so
if we go to youtube.com
go to develop and we're going to go over
to show page source now of course you
would not do this inside of your actual
application as this is stealing code but
for tutorial purposes I find no fault so
there we have it let's just click and
drag so we have all of this code inside
of our inside of the source code we can
just copy that and go over to our hello
world that's Swift file and we can go to
HTML code HTML and just paste in all
that code that we see there and again
you're going to get the spinning rainbow
death and as soon as this is all pasted
let's build and run this is a taking a
while all right now after that long
delay let's build and run and it should
all build and run properly inside of our
application so again this is a this is
YouTube so we're not going to get it as
perfect as actual YouTube because one
we're not using CSS we're not using
JavaScript so you're just getting the
bare minimum of everything that you have
so that is how you would use HTML inside
of a your UI webview
or just use a UI webview in general so I
hope you guys enjoyed it and I will see
you in the next one that's it for this
tutorial if you enjoyed it be sure to
hit that like button down below if you
want to see more tutorials like this for
me in the future be sure to subscribe
down below anyway thank you so much for
watching and I will see you in the next
one
how to use UI web views in several
different ways
so let's get started alright so this
tutorial is going to be structured in
three different ways one I will show you
how to just you to load a website from a
web into a web view with Swift in Xcode
just straight from a website so like
apple comm we're going to load that
straight into a web view secondly I'm
going to show you how to just import a
single line of HTML code and then lastly
just a full page of HTML code so let's
get started by opening it up Xcode and
creating a new Xcode project this will
be a single the application our product
name I am just going to call this a web
view our language will be set to swift
in our devices will be set to iPhone
click Next and create create alright now
let's make this a bit bigger and go into
our main dot storyboard so first thing
we need to do is oh it just click and
drag a webview into our scene like so
and it should grow and fill the whole
scene if not just click and drag it out
to the edges by just clicking and
dragging on these white little dots on
the edge all right now right-click or
control click and drag from that webview
and we're going to go over to our
hierarchy right over here if you can't
see that hierarchy just open it up just
by this little button right down here in
the bottom left corner
so again right-click or control click
and drag from that UI webview over to it
says view right here so just click and
drag that and it will be say equal
widths equal Heights and so we're going
to say equal widths as a constraint then
we're going to equal the heights as a
constraint and then we're going to
Center it vertically and Center it
horizontally so this uiwebview no matter
what screen size iPhone 6 iPhone 6 plus
it will all work this webview will work
properly on every single size device so
let's get started and open up our
assistant editor and right-click or
control click and drag from that webview
over to our view controller dot Swift
file that should open up our connection
type outlet and this is going to be the
name of our webview so I'm just going to
all this webview and connect and let's
go over to our main that's our view
controller dot Swift file and now we're
going to load up our webview load a
website into our webview now this is
very simple first thing we need to do is
open is create our URL so save our URL
so we're creating a variable URL a
variable called URL you can call it
whatever you want and then this is equal
to NS URL open parenthesis and this is
just going to be a string and inside of
the string value open quotation mark
close quotation mark we're going to put
HTTP colon slash slash colon slash slash
this is going to be WWF Capcom and again
this will work properly for any web site
and also you need to make sure that you
have HTTP colon slash slash in front of
whatever website you're trying to load
or else it will not work properly now
let's go down here and we want to say
web view dot load request and the
request that we're loading is an nsurl
request then open court open parenthesis
this is going to be a URL and the URL
will just be the URL that we just
created add an exclamation point at the
end so we can instantiate it inside of
this load request and now we if we were
to build and run this we will have our
website loading up inside of our web
view on our scene perfectly so now we
have archetype com loading up and there
you have it now my web site conforms
automatically to the screen sizes that
you have right here although if you did
have a website that didn't really work
for mobile it would just create a square
aspect ratio or it would fill the entire
screen and you would actually be able to
scroll from left to right between the
whole scene so that's how that works and
now let's go down here over to our web
view load request and again you can see
that Apple comm will
to work in the same fashion Apple calm
now conforms to the whole screen size so
it would actually work just the same as
my website just did so there you have it
and now we're going to go into our HTML
code so just delete whatever we have
right there and we're going to say web
view dot load HTML string and we're
going to at first it gives you this
little blue selection point and we're
just going to trade that out with open
quotation mark close quotation mark our
base URL we're going to say nil and
right over here inside of our open
quotation mark close quotation mark
we're going to add our HTML code so in
order for just to do this you just do
alligator tips alligator tips and we're
going to call this the body then you can
add a bunch of spaces this is where your
text will go and then again close the
body and then close the HTML so now we
have that done and inside of this we can
just say hello hello world so now we
have that and if we were actually to
build and run this right now we will
load our HTML string now obviously this
is very basic I'm not going to go into
programming with HTML but this has at
least going to show you some of the
basics of how to get HTML inside of your
Swift inside of your Swift application
so now we have hello world loading up
properly and you can also add things
such as H 1 and H 1 and closing the h1
now forever to build and run this now
you will see that this is going to give
it a header it's going to make it a bit
bigger so there you have it you can
change things accordingly if you really
want to I'm not going to show you like I
just said but this is the basics now if
you wanted to go more in depth and add
your own file that you have for your
website you can easily do this just by
saying web view got load requests all
right now before we get into this let's
go over here up
our top bar right up here and we're
going to go file new file and this is
going to be an empty file either in iOS
or OSX it doesn't really matter
empty file and click Next our file name
I'm just going to call mine HTML HTML
code dot HTML now it's important to have
this dot HTML in order for this to load
properly so like so the system can
recognize that this is actually an HTML
file now create and now we have our HTML
code HTML right over here and now we can
actually just create our HTML code so
now go down here this will be our body I
guess we needed to add at the HTML first
so let's close out of HTML like so open
up HTML and then inside of this we can
do h1 hello world like so and eight
slash h1 so now we have our HTML code
and let's put this inside of our
application now so now go over to your
view controller dot Swift and we want to
say web view the load request and this
will be an nsurl
request now you might be a bit confused
this is not a URL this is a file so now
let's yeah it was a bit confusing at
first with me too but this it works the
same exact way so this is going to be a
URL and then this will be a file file
URL with path and our path will be our
NS bundle
so our NS bundle is just basically
inside of this project that's basically
what the bundle is dot main bundle again
the whole project NS bundle main bundles
so now inside of this project we want to
find a passport resource so this is
right after main bundle after the
parentheses that we add you want to say
path for path count spell path for
resource and we we want this one where
it has this
name and then of type so the name of
this will be actually the name of your
HTML code the HTML code file that we
created and also make sure it's it's
case sensitive so you want to make sure
that it's HTML code with capital H
capital C and then of type and again
we've in this case we would forget about
the period right in between HTML code
HTML you would just erase that period
and now we're just going to put that as
HTML so now we're loading this request
and also it's going to give you the stop
sign error now basically what this is
saying is you need to instantiate all
these things that you're saying so go
ahead and follow those rules and it will
work properly again it wants one right
after this little bracket right here and
right after this giant bracket right
here so now that what this is doing it's
creating a URL it's finding the URL with
the path name of our bundle I mean again
the bundle is just the whole project and
we're grabbing a path blower resource
and we're grabbing the name of the
bundle or the name of the file that
we're trying to locate and then it's
grabbing that and loading it inside of
our web view so now if we were to build
and run this it will load up our HTML
code inside of our web view so there you
have it we have hello world and you can
of course do many other things with this
in fact let's kind of let's load up a
website that's actually kind of
cool-looking so right up here go over to
Safari we'll just load up a YouTube so
if we go to youtube.com
go to develop and we're going to go over
to show page source now of course you
would not do this inside of your actual
application as this is stealing code but
for tutorial purposes I find no fault so
there we have it let's just click and
drag so we have all of this code inside
of our inside of the source code we can
just copy that and go over to our hello
world that's Swift file and we can go to
HTML code HTML and just paste in all
that code that we see there and again
you're going to get the spinning rainbow
death and as soon as this is all pasted
let's build and run this is a taking a
while all right now after that long
delay let's build and run and it should
all build and run properly inside of our
application so again this is a this is
YouTube so we're not going to get it as
perfect as actual YouTube because one
we're not using CSS we're not using
JavaScript so you're just getting the
bare minimum of everything that you have
so that is how you would use HTML inside
of a your UI webview
or just use a UI webview in general so I
hope you guys enjoyed it and I will see
you in the next one that's it for this
tutorial if you enjoyed it be sure to
hit that like button down below if you
want to see more tutorials like this for
me in the future be sure to subscribe
down below anyway thank you so much for
watching and I will see you in the next
one
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About this Video
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Nov 23, 2024 Last updated |
Video Description: Using UIWebViews (HTML : Swift : Xcode) for App Development 2024 is part of Swift in Xcode: The Complete iOS Development Guide preparation.
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