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Welcome back and this video, we are going to combine several things that we have touched on in the

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last few videos, and we're going to see how we can now go ahead and use the camera in order to select

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an image or shoot an image first and then select that image in order to also display it as an image

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here.

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So pretty much get an image from the camera to our application.

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As you can see here now, the image is inside of this little image.

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You hereby we're not going to take care of the specifics of how to make the image of you beautiful and

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how to make the beautiful, but really just the functionality to start the intent to get the image and

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then to get the result of that activity, so to speak, to display this in our images.

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Therefore, I have an image of you here.

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You can set any settings you want, then a button which allows us to start the content in order to ask

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for permissions.

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And then, of course, if we have the permissions to start the activity, to display the camera application

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in order to then make an image and of course, then take that image and display the idea.

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So in order to do that, we need to prepare several things.

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So first of all, we need to have the permissions.

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Therefore, we can go to our manifest and here we need to use the permission for the camera.

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So we're just going to use Android permissions camera.

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All right, so this is the only permission that we're going to need in this example, and if you want

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to know more about permissions, then definitely check out the video on permissions.

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This is not specifically for that or this video here, because it's really just about the camera functionality.

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Then we need a companion object in which we store our variables, which are our constants, so to speak.

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So here the camera, a permission code will be one and then the camera value will be to.

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So one of them will be for the permission code, the other one will be for the intent and activity for

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result.

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That will make a lot more sense once we get into it.

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So first of all, we need, of course, our camera on Click Listener.

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So let's set that.

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And then the idea here is to, first of all, check if we have permissions.

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So that's generally always what we need to do if we want to use the camera.

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So check if we have permission.

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And which permission are we looking for?

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Well, specifically the camera permission and we check if the permission was granted.

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So if that's the case, then we want to use this camera functionality.

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So here comes in the interesting part.

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So we have this intent, which will be an intent that goes to and he wanted to import it real quick,

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which goes to the media store that action or it's just going to use this action image, capture functionality.

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So we prepared this intent to start our camera, pretty much that's what this does, all right.

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And then we can start the activity for result with the intent.

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And what shall we open?

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Well, we pass in the camera, which is our.

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It's variable that we created here.

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So this constant here, so we start the activity for result and as you know, when we do that, we need

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to pass in the intent that we want to start and then the code.

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To be more precise, the request code now, of course, you can call us one request coach if you want

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to be super clear about this.

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All right.

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So here we're passing the request code when starting the activity for a result.

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So we're pretty much waiting for a result.

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Now, of course, if we don't have permission, then we want to ask for permission.

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And I'm just going to use the standard format here, activity, combat request permissions.

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And then you need to pass an activity in which you want to request that the array of different permissions

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in our case is just one permission, which is a camera permission.

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And then we need to pass ENDA permission code as we prepared it up here.

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All right, now, of course, we need to do something in order to get the permissions running.

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So here on request.

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Permissions.

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Result.

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So this one here.

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It's going to be the one that we use in order to.

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Execute something.

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Once we get a permissions result.

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So either the user allowed it or he denied it.

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So I check if the permission request code, so request code is equal to the camera permission code.

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Because we're talking about emissions right here, here, the request code, if that's the same, then

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I want to check if the grant results.

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So this one here does a rate that we get here.

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As you can see, is an array of integers.

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If that is not empty and current results.

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At position zero.

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His permission granted.

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So here.

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Package manager, not permission granted.

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All right, so if permission is granted, then I want to pretty much do the same thing as we've done

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before with the intent.

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So here I want to start this activity for result here.

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So I'm going to paste that in here as well.

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Right.

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And otherwise, if we didn't get the grant result.

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So here in this health blog.

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I just want to write a little toast and say the permission was denied.

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So I'm just going to write something like you just denied the permission for camera.

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Don't worry, can out in the settings, OK?

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So this is the on request permission results, so this is, again, nothing new if you watched the permissions

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video.

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Now comes the Newport, the interesting part when it comes to the camera, because now we combine what

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we have seen with activity for result.

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And.

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The usage of cameras, because what we get from an activity for result is on activity result.

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So this function here is automatically then called once we get the results.

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So once the user, for example, selected an image with a camera.

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So now we can go ahead and check if the result code.

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It's going to be activity result.

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OK.

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And why we need to import activity and if that's the case, then we can check if the request code is

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equal to our camera request code.

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So here, camera request Kote.

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Because if that's the case, then we can display the data that we are oppressed from an activity result

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into our live image, which is and our activity in this image view, which was called IVI image.

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So then we can set that image view to be the image that we have just received as the result of an activity

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result, which pretty much as a result on start activity for yourself.

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OK, so now we can go ahead and hear.

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Get the data, and I'm saving that in a thumbnail, which is of type bitmap, and we get that need to

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import it real quick, then we get that from data.

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That extra us.

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So here, Daito.

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That was passed has some extras, and from there we want to get that data.

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So it's called data as a bitmap so the data can be in many different shapes and forms, but we want

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to get it as a bitmap.

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Now, the thing is, data is a nullable and extras is a nullable as well.

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So we need to focus on Revit here and then we have the thumbnail now we can go ahead and use that.

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So our image view.

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So I've image set, image bitmap can be our thumbnail because our thumbnail is.

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A bitmap and here, of course.

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Writing it correctly will be a little better.

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So here we set the image of the image for you to be, the thumbnail that we get from the data that was

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passed to us from the productivity result.

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So pretty much when we press on this button.

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Then we get to the camera, so that is.

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Here, set on Click Listener, so we click on the button it checks, do we have permission?

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If we have permission, which we do, then start a certain Internet media store action image capture,

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which is this screen here that it will be started as soon as this start activity result is.

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Executed.

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OK, so then and waits for the result.

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And once I select an image here, I press this button, then it goes back to this activity that we are

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at.

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So it goes back to our main activity and this one activity result is executed.

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So then it checks as the result code of result code, OK, which means that the selection work out.

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And then was the request code that got you that activity result, was it the common request code?

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So what do we get the camera requests from?

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Well, the thing is, we passed it here when we started the activity for results.

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So you can see your intent with the camera request code.

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And that is, of course, our constant that we have created here.

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OK, so we just use it as a concept because we want to use it multiple times throughout the application

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or potentially use it throughout the application.

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And it's just good practice to store it in a companion object.

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And then we can, of course, execute whatever we want to do if the result came back.

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Now the thing is the result is of type data, but in this case, the data that we get is actually going

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to be a bitmap.

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So now we can take that bitmap and store it as a bit more variable and then set our image for you to

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be that bitmap.

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All right.

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And similarly, other selections work as well, or other activity for result options work as well.

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So here you can, of course, use other types of intense.

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It could be an intent that we will use later on where we start an activity that we don't develop ourselves.

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And this intent could go to third party activities as well.

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For example, we are going to use places later on, which is from Google, where you can enter a name

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of a place and it will display that place on the map.

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And we want to get the information from the place, for example, the latitude and longitude, and we

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want to get that, of course, in the activity that started the intent.

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So we are also going to use the same approach, which is start activity for result.

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All right.

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So these are the basics behind it.

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And of course, we are going to look into that again and again, of course, each time when we use that.

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And we're going to use it quite a lot.

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So no worries if that was a little bit too much now.

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And see you in the next video.