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

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My name is Casio I am a developer relations in this article at Google I do the job largely with Android Television set and these days We will take a look at greatest procedures for partaking apps which can be style of like and gay embraces many stuff It is sort of a generic title so to

slender it down This is the things that we're going to speak about I will start out by expressing a small amount of the state of household and lounge as we understand listed here Google then I will move to take a look at some Android TV Basic principles which a lot of significant significant

apps to missus and and and it has some issues in there and no partaking application And that i obtained great a fantastic engaging app start of finding the entire Fundamental principles appropriate then we're shifting to speak a little bit in regards to the linkback library and among the significant thoughts that

All people usually has that's how do I customise the Leanback library it isn't going to in shape automatically the what I would like particularly am i able to modify it could I personalize it spoiler notify the answer is generally Of course and We'll discuss a little bit about that after which you can I am heading

to talk about the OS integration they will look at how we will integrate with Android TVs homescreen to element our articles we're going to mention discoverability as a result of lookup and interesting with the help so starting with a condition of property and front room for us at

Google so technology has altered how we connect with the home in this article at Google we feel that the following wave the next step forward in engineering for the house will originate from the intersection of components computer software and synthetic intelligence a single your property to not https://iptvgreek.com simply be smarter with your

residence not simply should be additional valuable but all of us we want are your own home to work for you and bringing jointly components software package and synthetic intelligence to offer an incredible Spurs to our people and this needless to say is anchored from the Google assistant the helpful Google technique that

provides collectively research that delivers alongside one another media and all of the media factors and all the media contact details at Google and when we're speaking about media there is no superior destination to eat media and to watch media than The larger display screen your home so the Android Tv set is

at the center with the media during the Google assistant power in the home you might have your sensible phone your intelligent auto your Wise speakers plus the Android TV delivers every thing jointly in one area media online games music and all those working experience collectively into 1 huge display as part of your

living room Android Television observed a great deal of momentum just lately 6 outside of the top 6 out of ten leading Wise Tv set manufactures are shipping and delivery TVs with Android Television and about a hundred and forty pay out Tv set operators are shippi create boxes with android Television likewise this has

been a big enhance in the last number of years which fantastic momentum that we have been observing on Android Television set extends to developers at the same time we not long ago declared that we have now around five,000 apps on Google Perform for Android Tv set about a thousand of these becoming for from steaming

streaming content suppliers so there is a whole lot occurring Android TV and at Google we've been concentrating lots of endeavours in Android Television set so let us mention a great building terrific participating Android Television apps so to get going what helps make an entry Television app or an Android app

and Android Television application due to system becoming Android indicates which you could reuse your entire competencies being an Android developer to produce an Android TV app but what can make it a Tv set app very well get started with the basic principles You will need to declare your capabilities and I understand this

is basically primary but I want you to genuine to touch on this simply because as I mentioned There are many of huge applications that skips or misses Many of these Fundamentals and no terrific partaking app performs if you skip the fundamentals so not surprisingly the first attribute that

you must declare is you Will not strike my touch monitor since the very last time I checked folks Do not go and touching their home screen TVs their front room Television so Should the point their fingers are interact utilizing a remote control also You must declare you

use linkback this does not automatically confer with the backlink back again library website link back is this generic expression that we use to define this expertise of observing Television which is different from utilizing a cellular device since you're utilizing it in a distance inside of a hyperlink back position in a very website link

back condition so You will need to declare that upcoming you have to declare your application banner just level I'll talk a little bit more details on manner and that is something which we always have issues with and finally It's important to declare your Android Tv set intent which isn't

the key tent this means you declare your Leanback launcher so Poona you are putting out with each other you declare the features that you just use you declare the banner and also you declare your connection back again in intent 1 two 3 your options your banner inside our hyperlink back again intent but I want to

discuss a lot more a little bit more details on the app banner by itself that's the banner in the event you ever utilised Android TV you know how it looks but here's the issue in lots of lots of cases you might search Incorrect and in lots of applications we have seen looking Completely wrong one among such examples is

whenever you offer a cellular icon listed here Android Television set application what occurs is that the icon are going to be scaled and put Within the dark rectangle so it looks like this weird blend of a square icon inside a rectangle space this occurs any time you provide a cell icon 512 by

512 in the adorable xhdpi folder to ensure that's Erroneous never do this also should you present any banner There is certainly larger sized than 300 320 by a hundred and eighty won't make any difference wherein folder you set it it's not heading to appear properly this is not in this instance We now have a 9

and 16 by 540 pixel picture in the rest drawable folder it does not work if you put in a special location so here I possess the similar image put in the drawable way Television set DPI also would not glance correctly all over again how to make it happen is exactly 300 320 by

a hundred and 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 accustomed to talk to your app representation but It is also made use of in other places like as an example during the plain x roll so probably nailing it down properly is vital at last if

you wish your software to be released for inside the Play Retail outlet for Android TV There exists a Exclusive decide-in distribution you have to check If you don't do that it's actually not about to go for that Perform Shop so as part of your Perform console You need to uncover

this distributor application on Android Television it isn't sufficient to point out it's actually not adequate to indicate that you have a backlink back again launcher you even have to seek out this distributor on Television set and Look at that box and The rationale for that's that there are several plant numerous hybrid platforms

or multi-platform natural environment advancement environments that quickly states that every thing is enabled just like a Leanback launcher for example but you might in no way have really examined none on Television through the use of these these enhancement environment so that does not always imply it may perform properly with a Tv set so That is why

we asked you to check that precisely checkbox fantastic to ensure that these are definitely the basics these are definitely the pretty bare-bones that you have to nail let us take a look at the Leanback library now needless to say the linkback library is this this list of widgets higher degree widgets that we offer

they affirm on the materialized specs and they offer a terrific experience for applying Television set in a length We've widgets for the house monitor which contains such as rows and also a navigation drawer We've got widgets for content details We've got widgets to get a good deal of different situations but

one of the most Regular issue that we hear about the Leanback library is nicely the widgets which you give isn't going to fit 100 percent what you need so are there any approaches to customise the Leanback library nicely the answer is Certainly you can find basically two ways you are able to go about

customizing the Leanback library sorry you are able to just simply alter the colors and Proportions values in the application or else you can provide custom presenters so let's chat a little bit about colors and Proportions if we go specially if we glance exclusively with the Search fragment that is the one particular

that's useful for a lot of homescreen from your home display of most important programs that is the one which exhibits up sidebar navigation as well as rows of contents you'll find like almost 20 properties only with regard to the Search fragment which you can modify in the callers and internal dimensions values such things as

brown like padding like title stereos roll models and these applies also on the navigation tower to each of the person playing cards and so on so far so for example am i able to Regular question am i able to make my navigation drawer shorter Certainly you can you need not generate code

for that just by transforming the Marg's plus the margin pennies along with other Proportions you can do that Certainly we really need to do a far better job at documenting these Qualities from time to time they don't seem to be always simple to search out Nevertheless they exist and you'll go a great distance just by

modifying the worth of these Attributes now sometimes that is not sufficient so the linkback library It can be based upon MVP or Design See sample which is amongst the lots of mV no matter what mother and father and several of those widgets they permit you to provide a custom made presenter I am not

going to dwell into the details about what can make what's the difference between MVP or MVC or mvvm but The truth is that on MVP your presenter functions because the glue amongst the design as well as check out but it's also liable for initiating or inflating in Android language the view

which means that by delivering a custom presenter you might be truly in total control of what you need it to seem like what you wish that widget to appear to be since you can offer a custom made watch so let's Have a look at an case in point again I'm going to make use of the

Browse fragment because it's the one which's generally used as the principle monitor of applications the Look through fragment it incorporates and it expects an array item adapter for precise display the person listing rows and the individual checklist rows one's a header top in addition to a put up adapter etc and so on but

I will deal with the upper ident presenter and that is the one which we can use to personalize how the navigation drummer seems so for example say I would like to own my navigation drawer And that i desire to Show icons close to my text near to my titles well

what you are able to do With this code is in Java what you can do is provide your custom made presenter In such cases I am calling it the icon header item presenter extending home header presenter and you've got two of the correct three distinctive methods at bare least three unique functions

on make view holder on bind discipline holder and own unbind check out holder on generate look at holder below inflate your structure and again mainly because this can be a presenter you inflate format if within the presenter you will be in finish control of supplying any look at that you'd like on bite watch

holder you established the contents not to mention on bite you cost-free the methods so let's Have a look suppose I need To achieve this icons I can do this by providing a tailor made view by utilizing a linear format and like not merely a textual content view that is the

default but also an image watch then on by see holder once more an instance from the watch holder presenter as well as the header merchandise by getting the hider item I can get in touch with Homes for instance get identify and use Those people to fill my text view label and icon and of course

on you override personal unbind look at holder to no cost any assets that you have applied they're the a few least ones that you've got to overwrite but of course you can find Other individuals If you need one example is to customize how they really feel how They give the impression of being how the individual merchandise appear

whenever they're selected there's just one system you can you could potentially override for that again in black in back again with your activity you can established the header presenter selector by giving an occasion of your respective custom presenter in my scenario I am unable to have their item presenter This is often an previous

illustration but why You should not you employ it In any case mainly because it's not very properly-regarded and It really is yet again a very common dilemma good let us now speak about Oprah OS integration you'll find 4 key things which your application ought to do to properly integrate in the Android Tv set operational procedure and

present an interesting experience integrative lookup media playback controls as activated through the assistant not to mention the home screen integration to Perform next and custom channels let us Examine Each individual of one of such so media found why nicely mainly because it allows the people to discover content material

by invoking playback from lookups by voice properly How can you do it you make our application searchable through the use of a articles service provider when the assistant performs query on the content material provider it might get started taking part in back making use of intents let us Have a look at this sample code right here closer so

I'm building my very own look for perform a information service provider extending material supplier these examples are in cuddling I've a create the query purpose and I really need to return a cursor the best way I will do the research nicely that for ice you are able to do the lookup wherever you

want it is possible to look for local content material that You could have downloaded as part of your application you could complete lookups within the server no matter what you need to do at the end you return a matrix cursor as well as their process to display your search engine results in just any other search engine results now the detail is

Although you would like you can do this research on the serve you should do it you need to get it done quickly simply because Google will their procedure will show an Ender android Tv set will clearly show you will find the effects as they appear so if all the other applications are

quicker than yours all in their icons all of their banners will look first than yours this means you want to make it faster following media controls why properly because you choose to enable the person to manage playback by making use of voice How will you get it done you combine media sections

media classes to take care of the callbacks so everytime you utilize the user uses their distant to perform playback towards the playback comments things like Participate in or pause or maybe smarter ones like skip to your earlier channel or to skip to previous episodes or skip to up coming which may be

utilized by both online video and audio applications you can even do a thumbs up If you would like and that is a lesser-known feature and the way in which you do this once more you present your media session fallback by extending meters need a session compact callback and you'll overwrite all these

features You should not Engage in on pause on halt on 6 you on skip to following on skip to previews and by Management override every one of these controls and control your own participant and by giving this callback on your media session instance your app now responds into the assistant playback controls

now we are going to go to discuss the integrations Together with the Android TVs dwelling monitor An important one particular bling becoming the Participate in future row mmm so if you do not know the Android Television set interface It is designed of these rows the main row is really a row in the

consumer favorites the end users preferred applications along with the the very to start with row after the listing of the buyers apps could be the Participate in upcoming job and it's a job or simply a channel as we get in touch with it that aims for being this international House for that customers articles across various apps so

The theory in this article is always that any any written content which the user is interested on or perhaps the user interacted with but did not finished your application can push this material into the plain X row so why you maintain your viewers engaged with content material and battle desire or attention-grabbing or haven't concluded

viewing for example preferred videos or upcoming episodes of a collection or even a movie that he has not concluded How would you try this effectively you publish your observe future method to Android accessibility preview channel helper you don't need to boot or be concerned about your material service provider oneself and what

could it be perfectly the Android CBS Participate in up coming row is up-to-date to reflect new engagement and place related information within the viewers fingertips s contents are additional older contents move to the right and at some time on the user never interacts Using these other contents they are removed from

the from their Participate in next purpose once more let's Examine this code a little bit nearer so Android X's watch the following system for what follows the Builder pattern so produce a builder you set the enjoy following kind you set a kind which may be a Film

or maybe a collection or music then you deliver your title and outline plus your poster artwork URI It is also essential to established