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Welcome back.

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And this year we are going to implement and use Dexter, which is an Android library that simplifies

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the process of requesting permissions at runtime.

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And we've seen before that it can be quite some work to implement that.

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But that's exactly what X comes, and it really helps us to make this a lot quicker.

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So can you, of course, check out this Web site, get help that consulate Kurumi slash Dexter if you

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want to know all about it, because here are a bunch of examples of how to use single permissions,

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multiple permissions and how to handle Århus and so forth.

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And, um, yeah, I would recommend to check that out.

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We're going to use some of that functionality.

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So let's dive right into it.

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And what we're gonna do is, by the way, we are going to have this screen here, which allows us then

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to ask what permissions I already gave the permission for this app.

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So let's see how we can implement that.

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So the first thing we need to do is to add an on click listener for our button, which is our TV ad

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image button.

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And it's going to be this.

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So.

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This glass, which is our ad happy place activity, will be the click listener because while it implements

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the functionality, here are extensive.

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OK.

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So then of course, we need to add the idea here as well.

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So our dot ideas dot.

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And here it was, Ivy Place image.

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So if that is the view that was clicked on, then what do we want to do?

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Well, first of all, I want to have this little.

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Higher alert dialogue here and with two options.

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All right, so let's add that alert dialogue.

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So Volle picture dialogue, as I'm gonna call it, is going to be an alert dialogue and I'm going to

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use the builder to build it.

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So a builder with this as the context.

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OK.

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And then I can set the title of that dialogue with the subtitle method here and I'm gonna say Select

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Action.

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And then I need to have two different picture dialogue items.

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So that's how I'm gonna call them picture dialogue items, which is going to be an array of two values.

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So we have select photo from gallery.

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And then the other option is capture photo from camera.

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All right.

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So these are the two options.

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And now I can go ahead and use that picture dialogue in order to set the items that it should display.

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And it's going to be their picture dialogue items.

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And then what do I want to do with it?

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Well, depending on the dialogue which was selected.

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I want to run some code.

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So depending on which.

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I want to run coat.

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OK.

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So we have two options.

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Number zero will be select four from gallery.

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And no one will be capture photo from camera.

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So what I want to do here is four zero.

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I want to run some code.

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And for one, I also want to run some code here.

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I'm just gonna use a toast.

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So toast.

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Make text which will be displayed for a certain amount of time.

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And then, of course, I want to show this dialogue.

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So picture dialogue, dot show.

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Now, what is it that I want to run?

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If we choose to functionality a photo from gallery while I want to run a method here or Rathod method

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call choose photo from gallery, and I want will of course need to be created.

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So let's create another function here.

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Private fun.

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Choose photo from gallery.

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And this one will of course, then later on allow us the permission or ask for the permission, whether

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we may even use a photo from the gallery and so forth.

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So we, of course, need to ask for permissions, so let's go to the permission file, which is our

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manifest.

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And here had a bunch of permissions that we're gonna need and I'm gonna use multiple ones, so I'm just

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gonna paste them in here.

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So what I will use is the permission to read external storage.

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Right.

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External storage and camera.

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All right.

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And then I told you that we were to use Dexter.

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OK.

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So in order to use Dexter, we need to go to rebuild Gradle.

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And then had this library here.

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So include a library in the built out cradle and limitation column.

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Kotomi, Dexter, six zero one.

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So I'm just going to add that here and then click sync.

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Now here, the top right hand corner.

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Once that is done, we can now use Dexter.

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So now we can go back to our happy places.

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And use extra in order to ask for permission.

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So here, Dexter.

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And then I need to import this glossier import, Dexter.

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All right.

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Now it's available.

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Let's look at the imports real quick.

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You can see now I'm using the combat Kotomi that dextra that Dexter.

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And now I can go ahead and use Dexters functionality.

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So here, for example, the method with activity.

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So I need to pass on the activity.

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Then I go ahead and ask for permissions.

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So which permissions do I want to use?

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Well, you can see a permission string is what I'm asked to provide.

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So many first thought.

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Permission thought.

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Read on the.

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External.

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On escort storage.

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And here, of course, it's easier if you enter manifest correctly.

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And then import manifest.

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And I'm going to import the Android manifest, then separated by Chrome on my other permission that

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I want to ask for.

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So many first thought.

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Permission thought.

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Right.

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External storage.

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And then.

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I can go ahead and have the listener.

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So with a listener and hear, by the way, we can just follow his instructions.

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And for us, what's interesting is there's multiple permissions because we are already asking for multiple

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permissions.

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Right.

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So what we need is a new multiple permission listener.

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All right.

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Even though it's done like this here, what we can do is we can use a different one.

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So I'm just gonna copy this.

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And what we going to do is we are going to pass pastie object of the multiple permission listener in

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here.

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OK.

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So it's instead of using the nuclear word, um, using an object of type, multiple permission.

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Listen to here.

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And by the way, it's complaining here, because I forgot the s here, because there is another cold

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weather with cold, warm method with permissions.

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So that's why it was complaining about this, right?

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External storage.

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Now it's going to work.

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And here.

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Because I'm passing in the object, I don't need to Brexiteer here.

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And this additional bracket here at the end as well.

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Because the court has, of course, Android, because the code is Java code.

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So we need to make some more changes.

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So here, overwrite.

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And then.

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I'm using the fund here.

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So overwrite fun.

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On permission checked.

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Then we pass in the multiple permission report.

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So what I'm doing here is really just bringing it in the right format and we need to import that as

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well.

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So multiple permissions as well as the permission request.

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We need to import that as well.

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And we are going to use the one from Dexter.

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So here we have a list of permissions, so permissions kolon, and that will be immutable list so we

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can change the list of permissions later on.

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So mutable list of permission requests.

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And then we need to token, which is going to be a permission token.

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So token Collen, permission token.

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Then we need to import permission.

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Tolkan as well.

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All right.

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And that's already it.

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Now, we, of course, need to implement the code that we want to run.

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Wunder permission is checked and Wenda permission Rusciano should be shown.

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And by the way, you also saw how easy it is to have just a code from being Java code to becoming codling

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code.

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So here, instead of the Newquay word, we use the object that we person of type, multiple permissions

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listener.

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And then, well, you can see what it does want and you can see that it's called the check method.

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So now we can, of course, implement those, too.

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And what do we want to do there?

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Well, let's start with the first one.

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So with this report and I'm going to do it like this.

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Now it can read everything here.

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So I'm gonna say if report exists and all permissions are granted.

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So report.

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All permissions granted.

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Then.

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I want to run a in there.

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OK.

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So here.

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This will be toast.

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Don't make text.

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And so forth.

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Okay, so I want to inform the user, so here I'm just gonna say storage, read, write, permissions

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are granted.

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Now you can select an image from gallery and the text will be.

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Displayed very quickly or only shortly.

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So this will be called as the permissions are checked and then we see if all the missions are granted.

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Then we execute this code.

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Now, what shall happen if the rationale should be shown?

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So if he needed to tell the user why we needed it, because he maybe pressed Noah or something like

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that.

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Well, then.

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I will show another method.

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So I'm going to create in this specific method, which is just going to be there in order to let the

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user know.

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And I'm going to call this method show rational dialogue for permissions.

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OK.

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Now, let's implement this method here.

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So private fun.

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And what I want to display there is an alert dialog, so alert dialogue builder with this as the context

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set the message to be heard.

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Looks like you have turned off permissions required for this feature.

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It can be and tabled under application settings or the the application settings.

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All right.

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So this is just an example of what you could display.

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Of course, you can write a very different text if you want, but generally that is.

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What we will do so show rationale for permission.

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Then we need to set a positive button, so set positive button.

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How should the text be?

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Well, the text to be go to settings so that the user presses.

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Yes.

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Or the positive buttons.

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So this go to settings button, then I want to send the user to the settings.

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OK.

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And how I do that is the following culture.

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I'm going to paste it in here.

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So we have two variables that we are past, but we are not using them.

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So we can just use underscore here.

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By the way, we could have done that somewhere else as well.

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So here, for example, we're not using dialogue.

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So we could have just used underscore because we never using it.

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OK.

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This is just an example.

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Then.

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We try to run a certain intent.

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Why do we try?

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Well, because it could go wrong.

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So we run an intent called setting's application details settings.

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And what we're using here is we're passing the you or I as well, which is the you arrive our package

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name.

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So what we want this to do is send the user to the application settings.

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We can directly change the user rights or the permissions.

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All right.

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And then we add this data to the Internet, to your eye, and we start the activity with this intent.

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And of course, as this could go wrong, we have a try and a catch surrounding it.

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And for example, the error that could arise is to activity not found exception.

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All right.

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So this is what should happen if the user presses to positive button.

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And now what should happen when the user sets the negative button or clicks the negative button?

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Well, then.

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I want this.

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Oh, by the way, I want this button to be saying cancel the text and hear why it's important, which

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said negative.

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Button you use, because in some cases it accepts certain, others it doesn't.

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So you need to have the one where it accepts it and you can see dialogue and which.

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And we're gonna use the dialogue that this miss here.

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Okay.

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So, as I said, which is never used.

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So we can rename the two an underscore.

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And of course, if we want to display our whole alert dialog, we need to add this show here.

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And before we test that, there are two minor things that I still need to change.

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And one of them is that when it comes to this Hohn.

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Permission, Rusciano, should be shown.

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And actually this with listener, when you want to run that, what you need to add is this on a same

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thread.

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So here we've before just had check.

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So here like this.

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The check.

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And what we actually need to do is on same threat thought.

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Check.

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OK.

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So this is the one line.

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And then another thing.

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One testing.

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I realized that I'm not using the right idea here.

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So I'm using Ivy Place image.

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But it should be TV ad image.

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OK.

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So it's superimportant that you use the correct names here.

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When entering this, I accidentally entered the wrong name.

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So let's test is again.

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We are.

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Let's click on an image and you can see we can select action.

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So select photo from gallery could see we are asked for permission.

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I'm gonna deny it.

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I'm gonna click once again.

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And you can see it says it looks like you have turned off permissions required for this feature.

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It can be enabled under the application settings.

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OK.

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And let's click on Go to Settings.

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You can see it goes to the app info directly.

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And here we can go to permissions.

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And go to camera.

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For example, allow camera or here, no emissions allowed.

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And we asked for storage.

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So let's allow storage here.

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We can also allow camera here if we want to.

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So now later on, it will not ask us again.

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Okay, going back from here and from here, it us back to our application and now and clicking it.

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We should get to the point where we can actually select the image.

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And by the way, if you were wondering why it didn't show just toes to be created, if all permissions

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are granted.

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Because currently all permissions are granted.

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That has to do with this multiple permissions report not being available.

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So we need to make this a nullable and then we can run this again.

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And that it will work.

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So that is something that is tricky.

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That is something that you probably wouldn't come up with yourself, because what we did in this part

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of the code is we translated his Java code into Cocklin code.

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And then, of course, it's not obvious to use notables here.

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Okay.

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But now, you know, that's what this causes for at least to a certain degree.

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So do you see these things as well?

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And you can use it in the future.

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So let's click on it.

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And you can see storage permissions are granted.

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Okay, so let's have a quick look at what we did.

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So what we needed to do is we needed to go to our manifest.

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We needed to add the permissions in here.

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Then we added something to our gradle.

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So this line here come Cherubini, Dexter, six zero one.

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We sinked this file and then we could go ahead and use his functionality.

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So we needed to import it.

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Of course, we had it on Click Listener for our buttons so that it does something.

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And when we click on that button, we opened a picture dialog.

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At least we call this dialogue like this.

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And we have two options.

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One of them being select the photo.

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The other one was capture the photo.

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And then if we click on select a camera or capture the photo, then we currently just show a text here.

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And otherwise, we call this function called Choose Photo from gallery, which we create ourselves,

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in which we then finally use Dexter, which is this library that we're using here.

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And we use multiple permissions in this case to read and write permissions.

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And we said there are multiple permissions listener.

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And there are two on options or top two on functions which are called.

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One is when the permissions are checked and one is have permission rational should be shown, which

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means to user said no.

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And in this case, what we do is we call our own alert dialog where we tell the user that it's really

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important that Benito's settings be to be active.

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So those permissions to be active.

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Otherwise, we cannot run the functionality of the application.

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And then what we do is we send him to the application settings, which is pretty useful.

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So this is something that you really might need in multiple of your applications.

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So that's really something that you should keep in mind.

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All right.

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And if the user says no, then we just as Mr. Dialogue.

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All right, cool.

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00:19:32,070 --> 00:19:38,940
So that's a very important step, because now you've seen how to use a third party library, which we

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have not used before.

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OK.

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So I'd say let's go to the next video where we're going to implement these further features.

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Soucy, they're.