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

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My title is Casio I am a developer relations listed here at Google I do the job typically with Android Television and nowadays We will discuss ideal procedures for partaking applications which happens to be form of like and gay embraces a great deal of things it's sort of a generic title so to

narrow it down Here is the things that we're going to discuss I'm going to begin by saying a small amount of the state of house and living room as we comprehend right here Google then I'm going to go to discuss some Android Tv set Basic principles which lots of major key

applications to missus and and and it has some blunders in there and no participating app And that i bought terrific an awesome participating application commence of getting every one of the basics appropriate then we're transferring to speak a little bit with regard to the linkback library and among the important queries that

Everyone often has that's how do I personalize the Leanback library it would not healthy necessarily the what I need just am i able to change it might I customise it spoiler alert the answer is mostly Of course and We will converse a little bit about that and afterwards I'm heading

to look at the OS integration they are going to speak about how we can integrate with Android TVs homescreen to function our articles we are going to look at discoverability as a result of search and interesting Using the aid so starting up which has a point out of household and front room for us at

Google so technological innovation has improved how we interact with the home listed here at Google we feel that the next wave the next leap forward in technological know-how for the home will come from the intersection of hardware software program and artificial intelligence a single your own home to not merely be smarter with the

dwelling not merely need to be a lot more helpful but most of us we wish are your house to work for you and bringing with each other hardware computer software and synthetic intelligence to offer an incredible Spurs to our end users which needless to say is anchored with the Google assistant the handy Google program that

brings together lookup that delivers collectively media and the many media factors and every one of the media contact points at Google and when we're talking about media there isn't a much better location to eat media and to watch media than The larger monitor your house And so the Android Television set is

at the heart in the media in the Google assistant electric power in the home you may have your wise phone your intelligent car or truck your Intelligent speakers plus the Android Television delivers all the things collectively in a single place media game titles music and all of those expertise together into a person major monitor in the

living room Android TV seen loads of momentum recently six from the very best six from 10 leading Good Tv set manufactures are transport TVs with Android Tv set and in excess of 100 and forty pay back Television set operators are shippi set up bins with android Tv set likewise this has

been a large enhance in the last number of years which fantastic momentum that we're seeing on Android Tv set extends to builders too we not long ago announced that We have now now more than five,000 apps on Google Perform for Android Tv set over a thousand of these remaining for from steaming

streaming written content suppliers so there is a ton occurring Android TV and at Google we have been concentrating many attempts in Android Television so let's discuss a fantastic making excellent participating Android Television set apps so to start out what would make an entry Television app or an Android app

and Android Television application as a result of program remaining Android usually means you could reuse all of your current techniques being an Android developer to generate an Android Television app but what can make it a Tv set app effectively begin with the basic principles You should declare your functions and I'm sure this

is absolutely primary but I would like you to definitely real to the touch on this for the reason that as I mentioned there are a lot of huge apps that skips or misses A few of these Essentials and no good partaking app works when you overlook the basic principles so naturally the very first aspect that

you'll want to declare is that you Will not hit my contact display because the final time I checked folks don't go and touching their property display TVs their front room Tv set so When the factor their fingers are interact using a handheld remote control also It's important to declare you

use linkback this does not necessarily seek advice from the url back library website link again Is that this generic term that we use to define this knowledge of viewing TV which differs from employing a mobile device simply because you're applying it in a distance inside a connection back posture within a link

again problem so You will need to declare that following You should declare your software banner just position I'll converse a bit more about manner that's something which we constantly have problems with and finally You will need to declare your Android TV intent which is not

the leading tent this means you declare your Leanback launcher so Poona you might be putting out with each other you declare the features that you use you declare the banner so you declare your backlink back in intent one particular two 3 your capabilities your banner within our link again intent but I desire to

converse additional a little bit more details on the app banner itself that is the banner for those who at any time employed Android TV you understand how it appears to be but This is the issue in lots of numerous scenarios you may perhaps glimpse Incorrect and in many applications we have seen on the lookout Incorrect among these types of examples is

once you provide a cellular icon in this article Android Television set app what comes about would be that the icon is going to be scaled and place In the dark rectangle so it looks like this Bizarre blend of a square icon inside a rectangle place this takes place when you give a cellular icon 512 by

512 in your adorable xhdpi folder making sure that's Incorrect tend not to try this also in case you give any banner There may be more substantial than three hundred 320 by one hundred eighty does not make a difference through which folder you set it it's not heading to look effectively this is not in this instance We've a nine

and sixteen by 540 pixel picture in the rest drawable folder it will not do the job if you place in a different position so listed here I contain the exact picture put while in the drawable way Tv set DPI also would not appear the right way all over again the way in which to do it is strictly three hundred 320 by

one hundred eighty pixels in The remainder drawable xhdpi folder by doing this your banner appears to be like the right way and remembering that our banner is used to inquire your application representation but It is also used elsewhere like for instance while in the simple x roll so probably nailing it down appropriately is essential finally if

you want your application to become published for from the Engage in Retail outlet for Android Television set There exists a Exclusive decide-in distribution you have to check if you do not try this it isn't really going to go for that Enjoy Store so with your Perform console You need to uncover

this distributor application on Android Television set it isn't ample to indicate it isn't sufficient to indicate that you've got a hyperlink back again launcher you actually have to find this distributor on Television and Check out that box and The main reason for that is that there are a lot of plant lots of hybrid platforms

or multi-platform ecosystem progress environments that quickly states that anything is enabled similar to a Leanback launcher such as but you could possibly in no way have truly analyzed none on TV through the use of these these growth ecosystem so that doesn't always suggest it is going to operate appropriately on the TV so This is exactly why

we requested you to examine that exclusively checkbox good to ensure that these are the basics these are generally the extremely bare-bones that you have to nail let us discuss the Leanback library now needless to say the linkback library is this this list of widgets higher degree widgets that we offer

they verify to your materialized specs and they offer an excellent encounter for applying Tv set at a length Now we have widgets for the home display which incorporates by way of example rows plus a navigation drawer We've got widgets for information aspects We've got widgets for just a lot of different circumstances but

essentially the most Recurrent issue that we listen to with regards to the Leanback library is properly the widgets that you deliver would not match 100 p.c what you will need so are there any tips on how to personalize the Leanback library properly The solution is Indeed you'll find basically two methods you are able to go about

customizing the Leanback library sorry you may just merely alter the shades and dimensions values within your application or else you can provide personalized presenters so let's discuss a little bit about colours and Proportions if we go precisely if we look exclusively for the Browse fragment which can be the 1

that's useful for many homescreen from your home display of principal apps which can be the one which shows up sidebar navigation as well as rows of contents there are like almost 20 properties only about the Search fragment which you could modify inside your callers and inner Proportions values such things as

brown like padding like title stereos roll kinds and these applies also into the navigation tower to each of the individual playing cards and the like up to now so such as can I Regular dilemma am i able to make my navigation drawer shorter yes you are able to you need not publish code

for that just by changing the Marg's and also the margin pennies along with other dimensions you are able to do that Certainly we must do a greater occupation at documenting these Homes in some cases they are not essentially easy to search out However they exist and you may go a long way just by

modifying the worth of these properties now in some instances that's not plenty of so the linkback library It is really based upon MVP or Product See pattern which is among the quite a few mV no matter what parents and several of those widgets they help you offer a tailor made presenter I am not

planning to dwell into the details about what would make what's the distinction between MVP or MVC or mvvm but The truth is that on MVP your presenter functions because the glue among the design and the watch but it's also answerable for initiating or inflating in Android language the check out

meaning that by delivering a custom made presenter you're actually in complete Charge of what you want it to appear to be what you would like that widget to look like simply because you can offer a custom made watch so let us Examine an instance again I will utilize the

Look through fragment as it's the one which's generally made use of as the principle display of applications the Search fragment it includes and it expects an array item adapter for precise demonstrate the person checklist rows and the individual listing rows a person's a header top and also a post adapter etcetera and many others but

I'll center on the higher ident presenter and that is the one which we can easily use to customize how the navigation drummer seems so for instance say I want to acquire my navigation drawer And that i choose to Exhibit icons near to my text near to my titles properly

what you can do On this code is in Java what you are able to do is give your tailor made presenter In this instance I am calling it the icon header merchandise presenter extending home header presenter and you have two of the proper a few unique solutions at bare minimum amount a few distinctive capabilities

on build look at holder on bind subject holder and own unbind view holder on produce watch holder in this article inflate your structure and once again simply because this can be a presenter you inflate format if inside the presenter you're in finish control of giving any check out that you might want on Chunk view

holder you set the contents and naturally on bite you no cost the resources so let's Have a look suppose I want to do this icons I am able to do this by delivering a custom made perspective through the use of a linear format and together with not just a text see that's the

default and also an image watch then on by perspective holder all over again an occasion of your look at holder presenter and the header merchandise by getting the hider product I am able to call Qualities such as get name and use These to fill my textual content perspective label and icon not to mention

on you override very own unbind check out holder to no cost any resources you have utilized these are the a few minimum amount ones you have to overwrite but not surprisingly you can find Other folks If you would like for instance to customize how they feel how They appear how the individual objects glimpse

after they're selected you can find just one system which you can you may override for that again in black in again within your action you may set the header presenter selector by giving an occasion within your custom presenter in my situation I am unable to have their merchandise presenter This really is an old

example but why don't you use it In any event because it's not incredibly well-known and it's all over again a very common concern superior let us now discuss Oprah OS integration there are four key things which your app must do to appropriately integrate with the Android Television operational program and

supply a fascinating experience integrative search media playback controls as activated from the assistant and of course the house display integration to play upcoming and customized channels let's Have a look at Every single of 1 of such so media found why effectively since it lets the buyers to discover articles

by invoking playback from lookups by voice well how do you get it done you make our app searchable by making use of a information company if the assistant performs query about the content material service provider it can start actively playing back working with intents let us Look into this sample code listed here nearer so

I'm making my very own search complete a material service provider extending content material supplier these illustrations are in cuddling I have a publish the query function and I need to return a cursor the best way I will do the lookup well that for ice you are able to do the look for any place you

want you'll be able to check for community content that You could have downloaded inside your app you are able to complete searches around the server whichever you are doing at the top you return a matrix cursor and their method to Exhibit your search results within just any other search results now the thing is

Regardless that you want you are able to do this search in your serve you would like to do it you ought to do it rapidly due to the fact Google will their method will exhibit an Ender android Television will show there's the outcome as they appear Therefore if every one of the other applications are

quicker than yours all of their icons all of their banners will look to start with than yours so you want to make it more rapidly next media controls why very well since you choose to enable the user to control playback by using voice How will you do it you integrate media sections

media classes to deal with the callbacks so everytime you make use of the user takes advantage of their distant to perform playback to the playback reviews things like Perform or pause or simply smarter types like skip on the former channel or to skip to former episodes or skip to following that may be

employed by each video and audio apps you can even do a thumbs up if you want and that is a lesser-recognized function and just how you do that all over again you present your media session fallback by extending meters have to have a session compact callback and you can overwrite all these

capabilities Really don't Engage in on pause on halt on 6 you on skip to following on skip to previews and by Handle override these controls and Management your own personal participant and by giving this callback towards your media session instance your application now responds towards the assistant playback controls

now we're going to transfer to take a look at the integrations Along with the Android TVs home display screen The key one particular bling currently being the Participate in following row mmm Therefore if you do not know the Android Tv set interface It really is designed of those rows the first row is usually a row from the

user favorites the buyers beloved iptvgreek.com/iptv-channels/arabic/ apps as well as the extremely very first row after the list of the buyers apps is the Participate in next function and it's a purpose or possibly a channel as we call it that aims to be this world wide House for the users content throughout different applications so

The reasoning here is the fact that any any information the person is fascinated on or maybe the person interacted with but failed to concluded your application can drive this written content for the basic X row so why you maintain your viewers engaged with articles and combat desire or intriguing or haven't concluded

watching which include preferred movies or up coming episodes of the sequence or a movie that he hasn't completed how do you do that very well you publish your look at following plan to Android access preview channel helper you won't need to boot or stress about your content service provider your self and what

can it be perfectly the Android CBS Engage in following row is up-to-date to mirror recent engagement and put pertinent written content at the viewers fingertips s contents are added more mature contents go to the correct and at some time of the user never ever interacts Using these other contents They are really faraway from

the from their Enjoy subsequent purpose all over again let us Have a look at this code a bit nearer so Android X's view another plan for what follows the Builder sample so make a builder you set the check out subsequent type you established a type which may very well be a movie

or a series or tunes Then you definately deliver your title and outline and also your poster art URI It is also extremely important to set the last time of engagement because this