Android TV: Best Practices for Engaging Apps (Android Dev Summit '19)

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My title is Casio I'm a developer relations right here at Google I do the job typically with Android TV and nowadays we're going to talk about finest tactics for participating applications which can be sort of like and gay embraces loads of things It truly is sort of a generic title so to

narrow it down This is the things which We will look at I'm going to start by stating a little bit of the point out of house and family room as we realize here Google then I'll go to mention some Android TV Fundamentals which several massive important

apps to missus and and and it has some issues in there and no partaking application And that i got great a fantastic participating application start off of having each of the basics appropriate then we're transferring to speak a bit regarding the linkback library and one of many important thoughts that

All people usually has which is how can I customise the Leanback library https://iptvgreek.com it would not suit necessarily the what I need precisely can I change it might I customise it spoiler notify The solution is mostly yes and We will converse a bit about that after which you can I'm heading

to mention the OS integration they're going to mention how we could combine with Android TVs homescreen to attribute our articles we are going to take a look at discoverability through lookup and fascinating With all the help so starting using a point out of dwelling and front room for us at

Google so know-how has changed how we interact with the house listed here at Google we believe that the following wave another leap forward in technological know-how for the home will originate from the intersection of components software and synthetic intelligence 1 your private home to not just be smarter with the

residence not just must be more practical but most of us we would like are your home to work for you and bringing alongside one another hardware program and synthetic intelligence to provide an incredible Spurs to our consumers and this obviously is anchored by the Google assistant the helpful Google technique that

brings alongside one another lookup that brings jointly media and all of the media details and each of the media Get hold of details at Google and if we're talking about media there's no far better place to consume media and to look at media than The larger screen your home Therefore the Android Television set is

at the heart of the media within the Google assistant ability in the home you may have your sensible phone your clever vehicle your Intelligent speakers and also the Android Television brings all the things together in one spot media online games songs and all those practical experience jointly into just one major monitor within your

living room Android Television set witnessed many momentum not too long ago 6 outside of the top six from ten best Clever TV manufactures are shipping and delivery TVs with Android Tv set and around 100 and forty pay Television set operators are shippi build boxes with android Television also this has

been a large boost over the past few years and this excellent momentum that we have been seeing on Android Tv set extends to developers also we lately announced that We've got now about 5,000 applications on Google Play for Android Television set in excess of a thousand of these being for from steaming

streaming information providers so there is a great deal occurring Android Television set and at Google we have been concentrating many efforts in Android Tv set so let's talk about a great building terrific partaking Android Television set applications so to get started what will make an entry Tv set application or an Android application

and Android Television application because of class becoming Android suggests which you can reuse all of your current abilities being an Android developer to generate an Android Television set app but what makes it a Tv set application properly begin with the fundamentals You need to declare your capabilities and I am aware this

is basically primary but I would like you to definitely accurate to the touch on this mainly because as I discussed there are a lot of big apps that skips or misses some of these Fundamental principles and no fantastic partaking application performs if you miss out on the basic principles so of course the initial characteristic that

you need to declare is you Really don't hit my touch display because the final time I checked men and women don't go and touching their property screen TVs their living room Tv set so In case the point their fingers are interact utilizing a handheld remote control also You will need to declare that you just

use linkback this does not essentially check with the hyperlink back again library url again is this generic phrase that we use to outline this working experience of seeing Television set which is different from utilizing a cell unit simply because you're making use of it at a length in a very url back place in a backlink

back situation so You will need to declare that subsequent You should declare your software banner just place I'll speak a bit more details on fashion that's something which we usually have issues with and finally You need to declare your Android Television set intent which is not

the leading tent so that you declare your Leanback launcher so Poona you happen to be putting out jointly you declare the characteristics that you simply use you declare the banner therefore you declare your backlink back in intent one particular two a few your attributes your banner inside our backlink again intent but I would like to

speak extra a little bit more about the application banner itself that's the banner for those who at any time applied Android Television set you know the way it appears to be but Here is the detail in lots of lots of cases you may perhaps seem Mistaken and in lots of apps we've seen looking Incorrect amongst this kind of illustrations is

once you offer a cell icon right here Android TV application what happens is that the icon are going to be scaled and put inside the darkish rectangle so it looks like this Bizarre mix of a square icon inside of a rectangle place this comes about any time you supply a cellular icon 512 by

512 in the lovely xhdpi folder in order that's Incorrect tend not to try this also for those who provide any banner There is certainly larger than three hundred 320 by 180 will not matter in which folder you place it it's actually not heading to look correctly this is not in this instance Now we have a nine

and 16 by 540 pixel graphic in the rest drawable folder it would not function if you place in a different area so right here I have the similar graphic set in the drawable way TV DPI also isn't going to seem the right way all over again just how to make it happen is strictly 300 320 by

a hundred and eighty pixels in the rest drawable xhdpi folder using this method your banner looks properly and remembering that our banner is utilized to inquire your app representation but It is also employed in other places like one example is within the plain x roll so it's possible nailing it down the right way is very important lastly if

you'd like your application to become published for while in the Enjoy Retailer for Android Television There exists a Distinctive decide-in distribution that you have to check If you don't try this it's actually not planning to go for that Perform Retail store so as part of your Play console You will need to uncover

this distributor app on Android Television it isn't adequate to show it is not enough to point out you have a url again launcher you even have to seek out this distributor on Television and check that box and The explanation for that may be there are quite a few plant several hybrid platforms

or multi-platform ecosystem improvement environments that quickly says that every little thing is enabled just like a Leanback launcher for instance but you would possibly never have truly analyzed none on Television set by making use of these these enhancement environment so that doesn't necessarily mean it's going to do the job the right way on a Tv set so This is why

we questioned you to check that specifically checkbox very good making sure that that these are the basics they're the extremely bare-bones that you have to nail let's talk about the Leanback library now needless to say the linkback library is this this list of widgets superior amount widgets that we provide

they affirm to the materialized specs and they offer a great practical experience for making use of Television set at a length We now have widgets for the house display screen which includes one example is rows and also a navigation drawer we have widgets for content material particulars We've got widgets for the large amount of different circumstances but

one of the most Repeated concern that we listen to with regard to the Leanback library is perfectly the widgets you offer does not in good shape 100 % what you will need so are there any ways to customise the Leanback library effectively The solution is Of course you can find essentially two approaches you may go about

customizing the Leanback library sorry it is possible to just only alter the colours and dimensions values in your application otherwise you can provide custom presenters so let us communicate a little bit about colours and dimensions if we go specially if we glance specifically at the Search fragment that is the one particular

that is certainly utilized for numerous homescreen from home display of key apps which happens to be the one that reveals up sidebar navigation plus the rows of contents you will discover like Pretty much twenty properties only in regards to the Look through fragment which you could modify with your callers and interior Proportions values such things as

brown like padding like title stereos roll kinds and these applies also on the navigation tower to every of the individual cards and so on thus far so by way of example can I Regular concern am i able to make my navigation drawer shorter yes you are able to you don't need to create code

for that just by transforming the Marg's plus the margin pennies and also other dimensions you are able to do that Of course we have to do an improved work at documenting these properties often they aren't always straightforward to search out However they exist and you will go a good distance just by

modifying the worth of such Qualities now occasionally that isn't plenty of so the linkback library It can be dependant on MVP or Design View pattern which has become the lots of mV no matter what mother and father and a lot of of Those people widgets they let you supply a tailor made presenter I'm not

planning to dwell into the details about what makes what's the distinction between MVP or MVC or mvvm but The truth is that on MVP your presenter acts since the glue amongst the model and the see but It is also liable for initiating or inflating in Android language the perspective

which implies that by supplying a tailor made presenter you're actually in finish Charge of what you would like it to seem like what you would like that widget to appear like as you can offer a custom made watch so let us Look into an example once more I'm going to use the

Look through fragment since it's the one that's generally applied as the key monitor of applications the Look through fragment it is made up of and it expects an array object adapter for precise demonstrate the individual listing rows and the individual checklist rows a person's a header peak and also a put up adapter and many others etcetera but

I'll target the higher ident presenter which is the one which we are able to use to personalize how the navigation drummer appears so as an example say I want to acquire my navigation drawer And that i choose to Exhibit icons close to my text near to my titles perfectly

what you are able to do On this code is in Java what you are able to do is supply your tailor made presenter In cases like this I'm calling it the icon header merchandise presenter extending home header presenter and you have two of the ideal 3 diverse techniques at bare bare minimum three various features

on develop view holder on bind subject holder and very own unbind see holder on make watch holder in this article inflate your layout and yet again due to the fact this is a presenter you inflate format if within the presenter you will be in entire control of providing any check out you want on Chunk look at

holder you established the contents not to mention on bite you free the assets so let us take a look suppose I need To accomplish this icons I'm able to do that by delivering a tailor made perspective by making use of a linear structure and which includes not simply a text look at that is the

default but in addition a picture view then on by look at holder yet again an occasion on the view holder presenter as well as the header product by obtaining the hider item I am able to contact Attributes such as get name and use These to fill my text watch label and icon and naturally

on you override own unbind view holder to no cost any resources that you have made use of these are the three bare minimum types that you've got to overwrite but certainly you will find Other people In order for you for instance to personalize how they sense how They give the impression of being how the individual objects look

whenever they're picked there is certainly one strategy that you can you could possibly override for that back in black in back again in your exercise you could set the header presenter selector by giving an instance of the personalized presenter in my circumstance I can not have their product presenter This is often an old

case in point but why don't you employ it either way because it's not pretty very well-identified and It is once more a quite common question excellent let's now speak about Oprah OS integration there are actually four major things that your app must do to appropriately integrate in the Android Television set operational system and

deliver an engaging experience integrative look for media playback controls as activated because of the assistant not to mention the home display integration to Enjoy following and custom made channels let us Consider Each individual of 1 of these so media learned why properly mainly because it permits the customers to discover content

by invoking playback from queries by voice very well How would you do it you make our application searchable by using a material provider when the assistant performs query on the content company it may begin enjoying back applying intents let's Have a look at this sample code in this article closer so

I am making my very own research perform a information supplier extending material supplier these illustrations are in cuddling I've a generate the question perform and I must return a cursor the best way I will do the lookup properly that for ice you can do the search any where you

want you may look for regional articles that you might have downloaded in the app you are able to conduct searches around the server whichever you need to do at the top you come back a matrix cursor as well as their technique to Screen your search engine results within just any other search results now the matter is

While you'd like you can do this research in your provide you ought to do it you want to get it done quick mainly because Google will their procedure will demonstrate an Ender android TV will present there is certainly the effects as they seem so if most of the other apps are

more quickly than yours all in their icons all in their banners will look 1st than yours therefore you need to make it more rapidly up coming media controls why very well simply because you want to enable the person to manage playback by using voice how do you get it done you combine media sections

media classes to handle the callbacks so when you use the person uses their distant to accomplish playback on the playback comments things like Participate in or pause as well as smarter ones like skip to the preceding channel or to skip to preceding episodes or skip to up coming which can be

employed by both of those video and audio apps you can also do a thumbs up if you want that's a lesser-recognized element and how you do this yet again you supply your media session fallback by extending meters have to have a session compact callback and you will overwrite most of these

capabilities Do not Participate in on pause on prevent on six you on skip to up coming on skip to previews and by Manage override all these controls and Command your personal participant and by providing this callback to the media session instance your app now responds to the assistant playback controls

now we are going to shift to discuss the integrations Together with the Android TVs property display An important 1 bling getting the Enjoy up coming row mmm Therefore if you don't know the Android Tv set interface It is really built of those rows the primary row is really a row from the

consumer favorites the consumers favourite apps plus the the pretty 1st row following the listing of the end users applications could be the Perform subsequent function and it's a position or perhaps a channel as we connect with it that aims for being this world-wide Place to the buyers content throughout various apps so

The concept below is always that any any content which the user is intrigued on or maybe the consumer interacted with but failed to concluded your application can force this content material to your simple X row so why you keep your viewers engaged with articles and battle desire or fascinating or haven't finished

viewing for example preferred video clips or future episodes of a sequence or perhaps a movie that he has not finished how do you try this well you publish your look at future plan to Android entry preview channel helper it's not necessary to boot or be concerned about your information supplier oneself and what

could it be effectively the Android CBS Participate in following row is current to mirror current engagement and put relevant written content on the viewers fingertips s contents are added older contents move to the proper and eventually of your user under no circumstances interacts Using these other contents They are really faraway from

the from their play upcoming purpose once again let us take a look at this code a little bit closer so Android X's look at the subsequent method for what follows the Builder pattern so produce a builder you set the check out up coming variety you established a type which could possibly be a movie

or perhaps a sequence or tunes Then you definitely deliver your title