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 mainly with Android TV and today We will take a look at best procedures for partaking applications which is style of like and gay embraces many stuff It can be form of a generic title so to

narrow it down This is the things which we're going to discuss I'll start off by stating a small amount of the point out of property and living room as we comprehend here Google then I'm going to go to talk about some Android TV Fundamentals which quite a few massive important

applications to missus and and and it has some problems in there and no engaging application and I acquired excellent an excellent engaging application start of obtaining all the Basic principles proper then we are moving to speak a bit concerning the linkback library and among the list of main thoughts that

everybody generally has that is how do I customise the Leanback library it won't fit essentially the what I want specifically can I regulate it may I customize it spoiler alert the answer is generally Indeed and We'll speak a bit about that and after that I am going

to take a look at the OS integration they are going to discuss how we can integrate with Android TVs homescreen to element our articles we are going to speak about discoverability by search and interesting with the assistance so starting up by using a state of property and family room for us at

Google so technological know-how has changed how we connect with the house below at Google we believe that the subsequent wave another step forward in technological know-how for the home will come from the intersection of components program and artificial intelligence one particular your home to not merely be smarter with all your

dwelling not merely really should be more valuable but many of us we want are your home to be just right for you and bringing alongside one another components software program and artificial intelligence to provide an incredible Spurs to our users and this certainly is anchored because of the Google assistant the beneficial Google system that

delivers jointly look for that brings with each other media and every one of the media points and all of the media Call factors at Google and if we are talking about media there isn't a far better place to take in media and to look at media than the bigger monitor your home Hence the Android TV is

at the guts with the media during the Google assistant power in your own home you might have your intelligent mobile phone your intelligent car your Good speakers as well as the Android Tv set provides all the things together in one position media games music and all of those knowledge with each other into one huge monitor in the

living room Android Tv set viewed a great deal of momentum a short while ago 6 away from the top six from ten prime Smart Tv set manufactures are shipping and delivery TVs with Android TV and around a hundred and forty spend Tv set operators are shippi set up packing containers with android TV in addition this has

been a big increase over the past several years and this excellent momentum that we've been observing on Android Tv set extends to builders as well we a short while ago introduced that We've got now around five,000 apps on Google Enjoy for Android Tv set about a thousand of these becoming for from steaming

streaming written content suppliers so there is a good deal happening Android Television set and at Google we are focusing loads of attempts in Android Television so let us look at an awesome producing terrific engaging Android TV applications so to begin what will make an entry TV app or an Android application

and Android Tv set app as a result of study course currently being Android implies which you can reuse your entire competencies being an Android developer to create an Android Television set app but what can make it a TV application very well begin with the basics You should declare your functions and I am aware this

is de facto essential but I want you to genuine to touch on this for the reason that as I mentioned There are plenty of huge apps that skips or misses Many of these Fundamental principles and no terrific participating app performs should you pass up the basics so certainly the main element that

you should declare is you Do not hit my contact monitor because the last time I checked men and women Never go and touching their household display screen TVs their lounge Tv set so In the event the issue their fingers are interact employing a remote control also It's important to declare which you

use linkback this doesn't essentially consult with the backlink back library url back again is this generic expression that we use to determine this expertise of looking at Television set which is different from employing a mobile unit since you're utilizing it at a distance in the url back place within a connection

again situation so It's important to declare that next You will need to declare your application banner just position I'm going to chat a little bit more details on fashion that is something which we usually have issues with And at last You should declare your Android Television set intent which isn't

the primary tent this means you declare your Leanback launcher so Poona you're putting out with each other you declare the attributes which you use you declare the banner and also you declare your connection back in intent one two 3 your capabilities your banner within our backlink again intent but I would like to

communicate extra a bit more about the application banner itself that is the banner for those who at any time used Android Tv set you know the way it looks but This is the point in lots of a lot of predicaments you would possibly glimpse Mistaken and in several apps we have seen searching Improper among this sort of illustrations is

whenever you offer a cell icon right here Android Tv set application what happens is that the icon will likely be scaled and place In the dark rectangle so it looks like this Odd combination of a sq. icon within a rectangle space this occurs if you provide a mobile icon 512 by

512 in the adorable xhdpi folder so that's wrong don't do this also in the event you provide any banner There is certainly more substantial than 300 320 by a hundred and eighty does not issue in which folder you place it it isn't going to seem appropriately this isn't in this example Now we have a nine

and 16 by 540 pixel graphic in the rest drawable folder it would not get the job done if you place in a different position so below I possess the similar impression put while in the drawable way Tv set DPI also isn't going to glimpse appropriately all over again the way in which to make it happen is exactly three hundred 320 by

a hundred and eighty pixels in The remainder drawable xhdpi folder this fashion your banner seems to be properly and remembering that our banner is used to check with your application illustration but it's also employed in other places like as an example while in the plain x roll so perhaps nailing it down correctly is vital last but not least if

you would like your application to get printed for inside the Enjoy Retail outlet for Android Television set There exists a Distinctive opt-in distribution that you've got to examine if you do not do that it isn't going to go with the Enjoy Retail outlet so with your Participate in console You must discover

this distributor application on Android Television set it's actually not enough to point out it is not enough to point out that you've got a website link back launcher you even have to locate this distributor on Television and Examine that box and The key reason why for which is that there are numerous plant many hybrid platforms

or multi-platform surroundings progress environments that routinely says that every thing is enabled like a Leanback launcher as an example but you may under no circumstances have actually tested none on Tv set by utilizing these these growth setting so that does not automatically mean it should get the job done appropriately on a Television so that's why

we requested you to check that specially checkbox excellent to make sure that that they are the basics these are typically the really bare-bones you have to nail let's talk about the Leanback library now of course the linkback library Is that this this list of widgets large stage widgets that we offer

they affirm towards the materialized specs and they offer an awesome practical experience for working with Television set in a length We've widgets for the home screen which incorporates for instance rows as well as a navigation drawer We now have widgets for articles particulars We've got widgets for just a good deal of different cases but

one of the most Regular issue that we hear regarding the Leanback library is very well the widgets you supply will not fit 100 % what you would like so are there any methods to customise the Leanback library nicely The solution is Indeed there are actually fundamentally two means you'll be able to go about

customizing the Leanback library sorry you can just simply just change the shades and Proportions values inside your app or else you can offer customized presenters so let's discuss a little bit about shades and dimensions if we go especially if we look particularly at the Look through fragment and that is the 1

that's useful for several homescreen from home monitor of main apps that is the one which shows up sidebar navigation as well as rows of contents there are like Nearly 20 Qualities only with regards to the Browse fragment which you could modify inside your callers and interior dimensions values things such as

brown like padding like title stereos roll styles and these applies also on the navigation tower to each of the individual playing cards and so forth so far so one example is can I frequent problem am i able to make my navigation drawer shorter Of course you can you don't need to create code

for that just by altering the Marg's and the margin pennies as well as other Proportions you are able to do that Sure we must do a better occupation at documenting these Attributes sometimes they don't seem to be essentially effortless to seek out Nonetheless they exist and you can go a good distance just by

modifying the worth of such properties now occasionally that is not sufficient so the linkback library It can be based upon MVP or Product Check out pattern which has become the numerous mV no matter what mom and dad and lots of of those widgets they let you offer a custom made presenter I am not

going to dwell into the main points about what would make what's the difference between MVP or MVC or mvvm but The truth is that on MVP your presenter functions as being the glue amongst the product as well as watch but it's also liable for initiating or inflating in Android language the view

which suggests that by furnishing a custom presenter you are basically in full Charge of what you need it to appear to be what you want that widget to appear to be since you can provide a customized check out so let's Have a look at an instance all over again I'll use the

Browse fragment because it's the one which's generally used as the main display of applications the Search fragment it contains and it expects an array item adapter for precise exhibit the person list rows and the individual list rows one particular's a header peak plus a publish adapter etcetera etcetera but

I will deal with the upper ident presenter which can be the one that we are able to use to personalize how the navigation drummer seems so as an example say I need to obtain my navigation drawer and I would like to display icons near to my textual content near to my titles nicely

what you can do On this code is in Java what you can do is deliver your custom made presenter In this instance I'm calling it the icon header item presenter extending house header presenter and you've got two of the best three distinctive methods at bare minimal 3 unique features

on generate see holder on bind area holder and own unbind look at holder on generate see holder in this article inflate your format and once again since it is a presenter you inflate structure if throughout the presenter you might be in complete control of giving any look at that you'd like on bite view

holder you established the contents and of course on bite you absolutely free the means so let's Have a look suppose I want To do that icons I'm able to try this by offering a tailor made perspective by making use of a linear format and which includes not merely a text see which happens to be the

default and also a picture watch then on by perspective holder yet again an occasion with the watch holder presenter along with the header product by obtaining the hider product I'm able to get in touch with properties which include get identify and use People to fill my textual content perspective label and icon and of course

on you override personal unbind watch holder to cost-free any sources that you have employed they're the three minimal ones that you have to overwrite but of course you will find others If you need as an example to customise how they really feel how They appear how the individual objects glance

if they're chosen there is certainly 1 approach you can you might override for that back again in black in again with your action it is possible to established the header presenter selector by furnishing an instance of the personalized presenter in my situation I can not have their merchandise presenter This really is an outdated

example but why Really don't you employ it In either case since it's not really nicely-identified and It is yet again a quite common issue superior let's now take a look at Oprah OS integration you will discover four key things which your application has to do to adequately combine on the Android Television operational process and

offer an engaging knowledge integrative search media playback controls as activated because of the assistant and of course the house screen integration to Perform following and tailor made channels let's Have a look at each of one of these so media found why properly because it enables the buyers to find out articles

by invoking playback from lookups by voice effectively How does one do it you make our app searchable by utilizing a material provider in the event the assistant performs question about the content material provider it may possibly start participating in back again working with intents let us Consider this sample code right here nearer so

I'm creating my very own lookup perform a material provider extending articles supplier these illustrations are in cuddling I have a publish the question purpose And that i really have to return a cursor the way in which I'll do the look for properly that for ice you can do the search any place you

want you could check for neighborhood content material that You could have downloaded within your app you could perform searches on the server no matter what you are doing at the tip you return a matrix cursor and their system to Display screen your search results within just almost every other search engine results now the point is

even though you would like you can do this research with your serve you want to get it done you should get it done quick mainly because Google will their system will demonstrate an Ender android TV will present there's the final results as they seem so if all the other applications are

more quickly than yours all of their icons all of their banners will appear 1st than yours therefore you need to make it a lot quicker up coming media controls why well because you choose to allow the person to manage playback through the use of voice How does one get it done you combine media sections

media periods to deal with the callbacks so when you make use of the person uses their distant to perform playback into the playback remarks things like Participate in or pause or simply smarter types like skip to the earlier channel or to skip to former episodes or skip to upcoming which can be

utilized by equally video clip and audio apps you can also do a thumbs up If you need that is a lesser-acknowledged feature and the way in which you do that yet again you supply your media iptvgreek.com/iptv-channels/australia/ session fallback by extending meters have to have a session compact callback and you can overwrite most of these

capabilities Do not Participate in on pause on halt on six you on skip to next on skip to previews and by control override every one of these controls and Manage your individual player and by supplying this callback to the media session occasion your application now responds to the assistant playback controls

now we're going to go to mention the integrations Using the Android TVs property display An important a person bling becoming the Perform future row mmm so if you do not know the Android Tv set interface It can be made of such rows the main row is really a row from the

person favorites the users favored apps along with the the incredibly to start with row after the list of the buyers applications will be the Engage in next job and it is a role or maybe a channel as we connect with it that aims for being this world wide space for that consumers content material throughout distinctive apps so

the idea right here is any any articles the consumer is interested on or maybe the user interacted with but did not concluded your application can press this articles to your plain X row so why you keep your viewers engaged with articles and combat desire or attention-grabbing or have not finished

watching such as preferred video clips or future episodes of a series or simply a Film that he has not completed How does one try this properly you publish your observe upcoming application to Android obtain preview channel helper you don't have to boot or stress about your information service provider yourself and what

can it be nicely the Android CBS play up coming row is updated to mirror current engagement and put appropriate content material in the viewers fingertips s contents are additional more mature contents transfer to the right and at some point in the person in no way interacts with these other contents they are removed from

the from their Engage in next position all over again let us Look into this code a bit nearer so Android X's watch the following plan for what follows the Builder sample so produce a builder you set the enjoy next style you set a type which may very well be a Motion picture

or maybe a sequence or songs Then you definately offer your title and outline and also your poster artwork URI It is also essential to established the last time of engagement