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Hello hello my code pals my friends my amigos in this video we're going to go ahead and create a Siri

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kit intense app extension.

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And we're also going to configure it so that it's good to go with a workout style app.

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So let's go ahead and let's pull over on our project here and what we need to do first is to create

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that intense app extension and so to do that what we're going to do is go up to the very top of our

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app here and click File New and then select target.

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OK.

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Now there's a bunch of different things you can select here and those are for different topics but we

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need to focus on an intense extension K and that's a sirra kit intense extension so go ahead and click

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on it and what we need to give it a name and so I'm just going to actually call this intent handler.

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OK.

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And it's basically going to you know handle whatever happens in our intents.

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So its name is intent handler leave all this information the same.

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But if this box is ticked include UI extension and ticket we do not want it because this course is not

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going to cover the UI extensions for the intent or the contents.

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But you can definitely do that if you want to dive into that.

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For now though were going to ticket and move on.

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So click Finish and its going to go ahead and ask you if you want to activate the content handler scheme

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click activate.

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Yes because you do want to do that and you'll notice there's another little project over here in our

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main project.

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If you open it up you'll see there are two different files here.

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One says intent.

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The other is Infocom pelisse that has its own info up list file and the interesting thing is that when

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we create this it assumes that we're making a messaging app and all this example code here is Regards

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in regards to a messaging app.

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And so I'm actually going to go ahead and just get rid of these comments and we're actually going to

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delete everything in here except for the class itself.

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So delete all this because these are all specific functions for messaging and also these protocols that

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we are extending.

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And go ahead and just conform to I-N start work out in 10 handly.

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OK this is the delegate that handles the starting of a workout.

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And of course we need to handle our intent and that's why we're using the intent handler protocol for

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starting a workout.

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Now that's great.

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But let's go ahead and let's pause for a sec and dive over into our info the populist file.

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So go into that and you'll notice this looks pretty standard except down here at the bottom there's

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a little dictionary that says an extension pop that open and you'll see there is an N S extension point

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identifier and s extension principle class.

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Don't do anything with those.

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Those are fine by default but we need to dive into the extension attributes.

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And there are two arrays in here.

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One is called intent supported and one is called intense restricted while locked.

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Now they do exactly what you would think intent supported is basically going to be what Syrie kit intense

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like start a workout and a workout Pazz Pozza workout add item 2 to do list for quest to ride which

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intense are going to be supported regardless of if the device is locked or not and the intense restricted

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is going to say okay which ones are going to be restricted while the phone is locked now.

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You know sending payments while the phone is locked is probably not a good idea because anyone can pick

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up your phone and say hey send me five hundred dollars and it would send them $500 because it's you

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know not locked down with security.

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So if you open this up there's actually nothing in here.

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And so we don't need to put anything in there but it does need to stay.

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So just leave it there.

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But if you pop open intense supported you'll notice that these are the ones that were related to messaging

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from the swift file so we can actually get rid of all of these.

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So just select them one by one and delete all three.

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Then we're going to just create an item inside by clicking that plus icon and item 0 is an OK name but

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we need to go ahead and use the proper intent.

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And we want to start a workout.

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So we're going to type and start workout and press enter.

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And that is the intent that we want to support.

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Now if we were going to support pausing workouts we could say I can pause workout and I'm not just doing

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this from memory I do.

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Well I am but I do know that I got these from Apple's documentation.

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If we wanted to support the ending of a workout we could support an end workout.

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OK.

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Now the interesting thing is that you need to know is let's say that you know speak something to Siri

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you say Hey Siri blah blah blah.

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And let's say that it's not exactly sure what you meant.

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Like maybe you said something that was a bit ambiguous it's not sure if you want to pause or end the

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workout like if you say you know stop my workout.

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What it's actually going to do is it's going to look through intense supported.

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And it's going to choose the top most item with a higher priority than the second and the second with

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a higher priority than the third.

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So put these in the order that you expect you know you're in tends to come in as.

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Now for our app I'm going to actually delete pause and work out.

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And we're just going to keep start work out.

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But that's good to know that the order actually does impact how Siri might look through and make requests

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based on what you say.

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Now I forgot this I N stands for intent.

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And we actually need to you know explicitly specify that this is an intent.

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So it's called I and start work out intent.

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OK.

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And that is it guys that's that's there our intent handler is here and now we're going to write the

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code to help us actually handle what happens when we speak to Siri.

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And there is one big function that we really care about since we're starting a workout and check it

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out if we type handle.

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There's one called handle intent.

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I start work out intent and that's the one we just set up in our info that pilots file so select it.

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And as you can see when this is called in intent is passed in and there is a completion handler where

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we pass the response out.

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OK.

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And it's escaping so whenever we call this later we can escape that value out or wherever a series picks

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it up.

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So inside the code here we're going to go ahead and print out a little statement basically saying what

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intent we're actually using.

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So we're going to just say print.

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And here we go.

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We're going to print out start work out intent.

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OK.

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And we're going to put a comma and pass in the intent and this is going to go ahead and print out everything

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like if I said start a workout for five minutes it would print out the time it would print out the type

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of workout it would print out all the relevant information for that particular workout and that's important

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because we need to use that later to display the data on the screen.

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Next up we're going to go ahead and essentially create a property that holds the spoken phrase what

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it thinks we said you know start a walking workout.

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It's going to say walk.

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Started running workout is going to say run and that we can actually pull that spoken phrase out of

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the intent and I'll show you why we need to use this in just a second.

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But for now go ahead and use guard.

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Because it is optional type.

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Guard let spoken phrase that's going to be equal to intent dot workout name which is optional.

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Spoken phrase.

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OK.

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And that's the phrase that Siri is identifying that we are wanting to perform.

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Now we're going to set it as that.

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But if there is not or else we're going to call our completion handler and we're going to basically

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say hey it's complete but it failed because there was no matching workout.

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So go ahead and call completion.

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And as you can see it's expecting a parameter of type II and start work out.

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Intent response.

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So let's give it that eye and start work out in response.

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And we're going to go ahead and pass in a code and user activity.

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OK we'll talk about user activity in just a second.

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So what we're going to do is we're going to go ahead and pass in like I said Dot failure no matching

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workout.

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OK.

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So that basically means if I said you know start a workout for five minutes it's going to say I don't

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know what workout you meant there's no matching workout by that name or if I said start a cycle workout

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will say there's no work out by that name and user activity.

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This is basically an item that contains everything the user is doing at the moment.

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And so what we can do this stuff is really cool because it actually is going to fill user activity automatically

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for us.

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We don't even need to create a property for it.

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So I'm actually going to set it to nil because at this point if there is no spoken phrase it doesn't

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really matter what we were doing because it's not going to work.

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At the end of course since this is an else statement we're going to go ahead and return out of our guard.

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So we don't get a crash.

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So we now have a spoken phrase property and this is where it's really important.

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Now the workout intent can handle cycling it can handle swimming it can handle running walking all kinds

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of things.

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We want to lock this app down just so that it can handle walking and running just to make it simple

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and a way you can do that as by typing if spoken phrase is equal to walk or spoken phrase is equal to

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run.

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We're going to go ahead and basically call the completion handler saying that we you know this is a

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good workout.

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Let's open the app and show the data.

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So call the completion handler and that's going to be of type and start work out response.

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Now let's think about if I say start a cycle work out for 20 minutes and my app is not supposed to support

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cycle workouts that's where this block is going to come into play.

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So we can type completion and passen and I and start work out intent response with a code like so.

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Failure no matching workout right just like we did above.

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So if there's no matching spoken phrase we're going to fail because it doesn't match if our phrase doesn't

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match the two cases that we really care about.

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We're gonna say failure no matching workout and user activity can be nil because it doesn't really matter

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what happens at that point.

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Now if we get to this point that means we've done it successfully we have successfully you know suggests

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that all a workout of type Walker of type run.

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So let's go ahead and let's pass in a code here.

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Now there's a lot of them.

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Failure failure no matching workout failure or ongoing workout failure requiring app launch handle and

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app ready unspecified.

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The one we want is handle an app meaning we want to handle the intent in our app instead.

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So if we pass handle an app it's going to say hey sear or leg day is going to continue with your request

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and it'll open up in our day app which is pretty cool.

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Now for user activity what we're actually going to do.

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I'm actually gonna go ahead and create a property here called user activity and it's going to be whip's

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activity and it's going to be of type and s user activity and that's user activity and it's going to

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be optional and I'm going to set it to be nil from the get go.

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And you know what I'm actually gonna go ahead and copy this.

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Instead of saying nil I'm just going to pass in user activity every time because it's either going to

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be nil or have a value.

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And the cool thing is when we actually do this when we call the intent user activity is going to be

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passed of value.

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And so that's why we're going to pass it in here.

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So that's that's the reason for that.

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Now it says that it's never.

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Oh OK.

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We're going to just change it to a lot because we're never actually we're not.

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We are not modifying it.

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And so we're going to go ahead and actually set it like so.

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So let's think what do we need to do next.

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We are handling the intent.

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Our intent handler here is done.

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We have set it up to focus on the eye and start work out intent.

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That's awesome.

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I think we should go test this out personally.

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But there's one thing we got to do.

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It's not going to know to actually call this other target unless we specify it in the app.

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Delegate Okay.

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So go ahead and open your app delegate here and there is a function that we can call or I guess a delegate

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method rather called continue user activity.

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OK.

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And this is where that user activity is going to be created and then passed into our extension.

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OK.

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So what we're going to do is below did finish launching.

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We're going to call continue user activity and it's right here it's this long one application continue

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USIA activity restauration handler.

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OK.

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That's what we're going to call.

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And in order to actually access the intent and all the silicates stuff we're going to go ahead and import

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intense like so.

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And now we're going to go ahead and actually call guard let intent.

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And we're going to set it to be equal to the user activity.

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OK.

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Because that's from here.

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Continue user activity.

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We're going to pass that in to interaction.

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We're going to get the interaction from that which is of type II and interaction.

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OK.

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Now it says right here when Siri Kitt launches your app it fills this property with the intent and response

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information that you're launching for your app so we can go ahead and call DOT intent and we can actually

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get out the exact intent that we wanted which we know is of type and start work out intent.

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So we should cast that is that I then start work out intent OK but since this is Gardley we should call

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else meaning if that doesn't work we're going to go ahead and print.

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And this is just the message for our self saying app delegate.

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Start work out intent false meaning it didn't work then we're going to go ahead and return false because

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this function is expecting a boolean to be returned back.

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So this means that we are we were not able to successfully continue user activity from Siri and now

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we have an intent property assuming that it comes in from the user activity which is created using this

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intent.

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Because remember the user activity is set and if it is successful it's passed in through our completion

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handler.

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So let's go ahead and down below here.

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Now that we have our intent we're going to go ahead and basically print that it was successful app delegate

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start work out it is true then we're going to just go ahead and print out the intent and we'll see what

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we get.

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Then at the end we return true because it was successful.

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Very cool.

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So now we are able to continue our user activity but we have not yet connected our app and the Siri

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related stuff.

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We have our intent here and with that.

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Check it out.

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If I if I type intent dot I can get the gold value which is the amount of time I asked I could get the

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work out.

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Name you know run or walk or cycle or whatever.

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I can pull out all that information but we have not yet set up a way for our workout books to access

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that and to get that.

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So let's go ahead though we have our intent here.

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We have our app delegate set up to continue that information.

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Let's go ahead and let's test it.

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Let's see what we actually get.

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So let's select our leg day scheme let's build it to iPhone 8 and let's see how it works we're going

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to just give it a test and we'll say you know start a workout in this app.

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Ok cool.

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So start a walking workout.

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I don't know let's see how it works.

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Leg day.

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Ok cool.

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So that's that's where we set up in our intent handler here.

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That was good.

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We said start a walk work out and the cool thing you can say walking or walking it understands that

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you mean walk.

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Now we handled it in the app and we passed the user activity so watch what happens if I open leg day.

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Look what we get.

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We get a print out here.

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Start work out intent is true.

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And we have all this information the workout name is walk.

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We don't have a location type or a goal unit type.

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And the goal value is null.

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Now that's because we didn't set a time.

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Now check it out if I said start a five minute walking workout.

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Leg day

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if I open it it says Go value 300 because five minutes is the same thing as 300 seconds.

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Wow that's really really cool.

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Let's try.

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Let's try saying a phrase that it doesn't know.

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Start a workout.

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Cool call leg day couldn't find a match and work out if we open it up it's going to say no and no it

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could not successfully find a workout.

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Let's try it again.

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Let's just let's try one that is a workout but is not accepted because we can find it to walk or run

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start a 23 minute run cycle workout

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cycle

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started 23 minute cycle workout.

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OK.

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So even though it is a successful workout that we can actually use it just printed out cycle.

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We can't actually use it in our app because we have locked it down to only accepting walk or run.

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WOW GUYS IT'S WORKING.

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That's really really cool.

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So we are handling our intent which is to start a workout or run or or walk.

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And so guys this is really cool our app delegate here is creating an instance of user activity and it's

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passing it in to our intent that is seriously the coolest stuff.

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So yeah guys this is amazing.

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We can now successfully handle intense for starting a workout using Syrie kit and use our app delegate

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to continue that activity in our application.

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So very cool stuff in the next video we're going to actually configure these results the ones that printed

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out here the goal value as well as the workout name using a data service we're going to create a singleton.

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And this is actually the recommended method by Apple is to create a singleton and then use your intent

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handler to pass the intent to your app delegate and then use your app delegate to set an instance of

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and start work out intent.

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And then you can use that singleton class to access all that data from your workout.

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VC OK so we're going to use a singleton class to manage the data that's being passed around so we have

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one static instance of data that's available to us throughout the entire lifecycle of the application.

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So let's head over to the next video and let's configure those results using a data service.

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I'll see you there.