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

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My identify is Casio I'm a developer relations below at Google I do the job generally with Android Tv set and nowadays We'll look at very best practices for engaging apps which is kind of like and gay embraces plenty of things It really is type of a generic title so to

slim it down Here is the things that We will look at I'm going to get started by stating a small amount of the condition of home and lounge as we have an understanding of below Google then I'm going to shift to discuss some Android Television set Fundamental principles which several big significant

apps to missus and and and has some issues in there and no participating application And that i received excellent an incredible partaking app start out of finding each of the Fundamental principles ideal then we are transferring to speak a little bit with regards to the linkback library and one of the key thoughts that

everybody usually has that is how do I customise the Leanback library it will not healthy essentially the what I want precisely can I regulate it might I customize it spoiler notify The solution is generally Sure and We'll discuss a bit about that and after that I'm likely

to talk about the OS integration they will take a look at how we are able to combine with Android TVs homescreen to attribute our material we are going to mention discoverability through lookup and engaging Together with the help so starting up having a point out of property and lounge for us at

Google so technological innovation has altered how we connect with the home listed here at Google we feel that the next wave the following breakthrough in technologies for the home will come from the intersection of components software program and synthetic intelligence a person your property to not simply be smarter along with your

house not simply really should be extra beneficial but most of us we wish are your property to work for you and bringing jointly components application and artificial intelligence to supply an unbelievable Spurs to our consumers and this obviously is anchored via the Google assistant the beneficial Google program that

delivers together search that brings with each other media and many of the media factors and all of the media contact factors at Google and if we are speaking about media there isn't any superior destination to consume media and to look at media than The larger monitor your property Hence the Android Television set is

at the center on the media from the Google assistant electric power at your home you might have your smart cell phone your wise vehicle your Smart speakers plus the Android Tv set delivers anything together in one location media video games songs and all of those knowledge together into just one big monitor with your

living room Android Tv set seen a great deal of momentum a short while ago 6 from the very best 6 from ten best Intelligent Television set manufactures are delivery TVs with Android Tv set and above 100 and forty pay out TV operators are shippi setup bins with android Television too this has

been a tremendous increase over the past couple of years and this wonderful momentum that we've been observing on Android TV extends to developers in addition we a short while ago introduced that We now have now over five,000 apps on Google Play for Android TV in excess of a thousand of them remaining for from steaming

streaming content material companies so there is a ton occurring Android Television and at Google we have been concentrating lots of initiatives in Android Television so let us talk about an incredible producing terrific engaging Android TV apps so to begin what makes an entry Television set application or an Android application

and Android Television application as a result of system remaining Android means that you could reuse all of your current abilities being an Android developer to develop an Android TV application but what causes it to be a Television set application well begin with the basics You need to declare your characteristics and I am aware this

is basically simple but I would like you to legitimate to touch on this because as I discussed There are tons of huge apps that skips or misses Some Essentials and no good partaking app will work if you skip the fundamentals so needless to say the initial aspect that

you have to declare is that you You should not hit my contact display screen as the very last time I checked men and women don't go and touching their property display TVs their living room TV so In case the factor their fingers are interact using a handheld remote control also You will need to declare that you

use linkback this doesn't essentially check with the connection back library connection back Is that this generic term that we use to determine this working experience of viewing TV which is different from utilizing a mobile machine because you're making use of it at a length in a very url again posture within a backlink

again scenario so It's important to declare that subsequent you have to declare your software banner just level I will discuss a little bit more details on manner which happens to be something which we always have issues with And eventually you have to declare your Android Television intent which is not

the principle tent therefore you declare your Leanback launcher so Poona you are putting out together you declare the attributes that you just use you declare the banner and you declare your backlink back in intent one two three your capabilities your banner in our link back again intent but I need to

converse extra a little bit more details on the app banner alone that's the banner if you at any time employed Android Television you know the way it appears but This is the matter in lots of lots of situations you may glimpse Improper and in many applications we've seen seeking Mistaken certainly one of such illustrations is

once you give a cellular icon below Android TV app what occurs is that the icon might be scaled and place In the dark rectangle so it looks like this weird mix of a square icon inside a rectangle location this occurs once you offer a cell icon 512 by

512 in the cute xhdpi folder to ensure's Completely wrong tend not to do that also for those who offer any banner There is certainly much larger than three hundred 320 by one hundred eighty will not issue wherein folder you put it it's not likely to seem appropriately this isn't in this instance We now have a nine

and 16 by 540 pixel image in the rest drawable folder it does not function if you put in another position so in this article I provide the exact graphic put in the drawable way Tv set DPI also does not look accurately again just how to do it is strictly three hundred 320 by

180 pixels in the rest drawable xhdpi folder this fashion your banner appears properly and remembering that our banner is utilized to request your application representation but it's also used in other places like as an example in the basic x roll so maybe nailing it down properly is critical lastly if

you need your software being published for within the Play Retailer for Android TV There's a Specific choose-in distribution that you've got to check if you do not do this it isn't really going to go for your Participate in Retail outlet so as part of your Enjoy console you have to locate

this distributor application on Android TV it isn't enough to show it is not adequate to point out that you have a link back again launcher you even have to discover this distributor on TV and Check out that box and The main reason for that may be there are many plant lots of hybrid platforms

or multi-System surroundings growth environments that routinely says that every thing is enabled just like a Leanback launcher one example is but you could never have truly analyzed none on Television set by utilizing these these advancement atmosphere so that does not always necessarily mean it may function accurately over a Television so This is exactly why

we requested you to check that specifically checkbox very good to ensure that these are typically the basics these are generally the very bare-bones that you've got to nail let's speak about the Leanback library now not surprisingly the linkback library Is that this this set of widgets high stage widgets that we provide

they confirm on the materialized specs and they offer a great encounter for employing Television in a length We have now widgets for the home display screen which consists of such as rows along with a navigation drawer Now we have widgets for articles aspects We've got widgets for a large amount of different circumstances but

the most Repeated problem that we hear with regard to the Leanback library is well the widgets which you deliver won't in shape a hundred per cent what you require so are there any tips on how to personalize the Leanback library well The solution is Sure there are essentially two methods you are able to go about

customizing the Leanback library sorry you'll be able to just merely change the colors and Proportions values within your app or else you can offer custom made presenters so let us speak a bit about colours and Proportions if we go particularly if we glance especially at the Look through fragment and that is the one

that may be utilized for a lot of homescreen from your home monitor of key apps which happens to be the one which reveals up sidebar navigation as well as rows of contents there are actually like almost 20 Attributes only with regards to the Browse fragment that you can modify in the callers and inner dimensions values such things as

brown like padding like title stereos roll kinds and these applies also for the navigation tower to each of the individual playing cards and so forth thus far so by way of example can I Repeated issue can I make my navigation drawer shorter Sure you could you need not generate code

for that just by modifying the Marg's as well as the margin pennies and various Proportions you are able to do that Of course we need to do an even better occupation at documenting these properties occasionally they're not always easy to uncover Nevertheless they exist and you can go a long way just by

modifying the worth of these Houses now occasionally that is not adequate so the linkback library It is based upon MVP or Design Check out sample which is one of the many mV what ever mothers and fathers and plenty of of Individuals widgets they allow you to supply a tailor made presenter I'm not

going to dwell into the small print about what will make what's the difference between MVP or MVC or mvvm but the fact is that on MVP your presenter acts as the glue amongst the product and also the view but it's also liable for initiating or inflating in Android language the view

meaning that by providing a custom made presenter you happen to be in fact in complete Charge of what you want it to seem like what you want that widget to look like since you can offer a custom made check out so let us Examine an instance once again I'll use the

Look through fragment mainly because it's the one that's mostly applied as the principle monitor of applications the Search fragment it contains and it expects an array item adapter for precise display the individual checklist rows and the individual record rows 1's a header height along with a publish adapter and so forth and so on but

I'll target the higher ident presenter and that is the one that we are able to use to personalize how the navigation drummer seems to be so such as say I would like to acquire my navigation drawer And that i need to Screen icons near to my textual content near to my titles perfectly

what you are able to do With this code is in Java what you can do is supply your personalized presenter In such cases I'm calling it the icon header item presenter extending dwelling header presenter and you have two of the correct a few different strategies at bare bare minimum three diverse features

on build watch holder on bind discipline holder and personal unbind check out holder on build check out holder right here inflate your format and all over again because this can be a presenter you inflate format if in the presenter you're in finish Charge of offering any check out that you might want on Chunk see

holder you set the contents and of course on bite you cost-free the sources so let us Have a look suppose I want To achieve this icons I can try this by offering a custom made see by using a linear format and like not simply a text check out which is the

default but also an image look at then on by check out holder all over again an instance from the watch holder presenter and the header product by receiving the hider product I'm able to simply call Qualities for instance get identify and use Individuals to fill my textual content look at label and icon and of course

on you override have unbind perspective holder to cost-free any resources that you have made use of these are generally the three least kinds that you've to overwrite but obviously there are Many others if you want one example is to customize how they come to feel how they look how the person things glimpse

after they're selected you will find a person strategy you can you could possibly override for that again in black in back as part of your exercise you may set the header presenter selector by providing an instance of one's personalized presenter in my situation I can not have their merchandise presenter This can be an aged

instance but why Never you employ it In any case since it's not pretty properly-recognised and It really is again a quite common question excellent let us now mention Oprah OS integration you will find four important things that your application ought to do to adequately combine in the Android Tv set operational procedure and

present an enticing practical experience integrative look for media playback controls as activated via the assistant not to mention the house display screen integration to Enjoy next and customized channels let us Have a look at Each individual of one of these so media identified why very well mainly because it allows the people to find information

by invoking playback from queries by voice well How will you do it you make our app searchable by using a articles service provider when the assistant performs query within the content material service provider it could start off playing back making use of intents let us Examine this sample code listed here nearer so

I am producing my own research complete a material service provider extending articles supplier these examples are in cuddling I have a write the query purpose and I must return a cursor the way I will do the search nicely that for ice you can do the research anywhere you

want it is possible to check for local written content that You may have downloaded with your application you could conduct searches to the server whatsoever you do at the top you come back a matrix cursor as well as their system to display your search engine results within just every other search engine results now the matter is

even though you wish you are able to do this look for in your serve you wish to do it you wish to get it done quickly for the reason that Google will their program will demonstrate an Ender android Tv set will display you can find the effects as they appear Therefore if the entire other apps are

faster than yours all of their icons all in their banners will look to start with than yours so you want to make it speedier future media controls why perfectly simply because you would like to enable the user to manage playback through the use of voice How can you get it done you integrate media sections

media sessions to deal with the callbacks so everytime you utilize the person utilizes their distant to carry out playback on the playback reviews things such as Participate in or pause or simply smarter types like skip to your past channel or to skip to preceding episodes or skip to upcoming which may be

employed by each video clip and audio applications you can also do a thumbs up If you prefer that's a lesser-known element and the best way you do this once again you offer your media session fallback by extending meters require a session compact callback and you'll overwrite most of these

capabilities don't Engage in on pause on quit on six you on skip to subsequent on skip to previews and by control override most of these controls and Management your personal player and by furnishing this callback in your media session occasion your app now responds for the assistant playback controls

now we're going to transfer to speak about the integrations Using the Android TVs property screen An important just one bling becoming the Participate in following row mmm so if you don't know the Android TV interface It is created of these rows the main row is a row on the

user favorites the end users beloved applications and also the the pretty very first row following the listing of the end users applications could be the Perform next position and it's a role or even a channel as we connect with it that aims to get this world-wide Place with the people articles throughout distinct apps so

The reasoning below is the fact any any iptvgreek.com/iptv-restream/ material which the consumer is interested on or even the consumer interacted with but failed to concluded your application can thrust this written content to your simple X row so why you keep your viewers engaged with information and fight interest or exciting or haven't completed

seeing such as favored videos or up coming episodes of the series or a Motion picture that he hasn't finished How will you do that perfectly you publish your view next software to Android obtain preview channel helper you don't have to boot or concern yourself with your content material supplier yourself and what

can it be properly the Android CBS Participate in subsequent row is up-to-date to replicate latest engagement and place suitable information in the viewers fingertips s contents are included older contents transfer to the best and in some unspecified time in the future of your consumer under no circumstances interacts with these other contents They're faraway from

the from their Perform following purpose all over again let us Have a look at this code a little bit closer so Android X's enjoy the next system for what follows the Builder sample so develop a builder you established the observe subsequent variety you set a type which can be a movie

or simply a collection or new music Then you really present your title and description plus your poster art URI it's also extremely important to set the final time of engagement because this image may be just a little far too too much too little but in the event