session android, contents & service samsung wallet, it's convenient, personal and safe as the growth of digital wallets skyrockets, samsung recently announced samsung wallet – a new platform bringing almost all of the cards you’d typically find in a physical wallet, as well as important documents, into one easy-to-use and secure mobile application. as samsung wallet rapidly expands its content set, find out more about the future of digital wallets and how open api’s can allow developers to build integrations for this service. speakers robert white samsung electronics david lee samsung electronics surojit chatterjee coinbase code lab sdc22 add boarding passes, tickets, and coupons learn how to integrate the add to wallet functionality with partner services, enabling users to add boarding passes, tickets, and coupons to samsung wallet. 30 mins start

session web flexible and private web experience on samsung internet in this session, you will learn how to enhance and optimize your web experience for foldable devices using device posture api and viewport segment media query. we'll also take a closer look at how samsung internet protects users’ privacy online. speakers laura morinigo samsung electronics related video video link video link unfolding the future of responsive web design let's dive into the next trends of responsive web design and how to apply best practices to foldable devices using the device posture api. code lab sdc22 develop a camera web app on foldables learn how to develop a camera web application that detects partially folded posture and adjusts its layout accordingly to improve user's experience on samsung foldable devices. 30 mins start

check out our latest podcast interview with eric cloninger, developer relations lead at samsung. in this special episode of the pow! podcast we chat about some of the highlights from our past developer conferences, and what you can look forward to at this year's sdc21 virtual conference. topics covered sdc21, virtual conference history of the samsung developer conference conference audience keynote speakers conference announcements technical sessions expo floor galaxy store gallery code lab virtual reality after-hours party chris shomo, infinity watchfaces watch face studio 2020 best of galaxy store awards 2021 best of galaxy store awards bixby developers one ui beta samsung podcast platform smartthings watch the trailer read along transcripts for the samsung developers podcast are available at the samsung developers portal.

develop a blockchain shopping app objective create a shopping application with samsung blockchain platform sdk and pay using ethereum network overview the blockchain industry is expanding in many ways it is growing the most as a means of payment samsung blockchain platform sdk helps to make payments easily with cryptocurrency you can interact with blockchain through a simple api call to create a transaction in this code lab, you can pay for a product using the ethereum network in a simple shopping app, which is a decentralized application dapp dapps run and store data on the blockchain network instead of a central server set up your environment you will need the following java se development kit 8 or later android studio latest version recommended mobile phone with samsung blockchain sample code here is a sample code for you to start coding in this code lab download it and start your learning experience! platform sdk sample code 3 94 mb enable developer mode to activate developer mode on your mobile device, follow the steps below navigate through settings > biometrics and security > samsung blockchain keystore and click about blockchain keystore tap the samsung blockchain keystore app name quickly, ten times or more if succeeded, developer mode will show import project file open the downloaded sample code containing the shopping app project go to file > open and select the open file or project window every gui resources are already included in the provided project you simply need to fill out the code by following the next steps moreover, it is recommended to go through the documentations of samsung blockchain platform sdk initialize the instance create an sblockchain instance this is the first step since sblockchain is the initial base class of sdk along with that are hardwarewalletmanager responsible for wallet operations accountmanager responsible for account operations msblockchain = new sblockchain ; msblockchain initialize mcontext ; maccountmanager = msblockchain getaccountmanager ; mhardwarewalletmanager = msblockchain gethardwarewalletmanager ; mcoinnetworkinfo = new coinnetworkinfo cointype eth, ethereumnetworktype goerli, rpcurl ; connecttokeystore ; connect to samsung blockchain keystore you can get hardware wallet instance from hardwarewalletmanager hardwarewallettype refers to the type of cold wallet to be connected, such as samsung blockchain keystore and ledger nano s mhardwarewalletmanager connect hardwarewallettype samsung, false setcallback new listenablefuturetask callback<hardwarewallet> { @override public void onsuccess hardwarewallet hardwarewallet { handler post new runnable { @override public void run { log i tag,"hardwarewallet is connected successfully" ; mprogressbar setvisibility view invisible ; setaccountstatus ; } } ; } @override public void onfailure @notnull executionexception e { mprogressbar setvisibility view invisible ; e printstacktrace ; } @override public void oncancelled @notnull interruptedexception e { mprogressbar setvisibility view invisible ; e printstacktrace ; } } ; the second parameter of connect api refers to reset if you do not want to reset the wallet then keep it false, otherwise true manage your account now, your shopping dapp is connected to the keystore it means that if you have your own account with balance, you can now buy using ether or eth let’s create an ethereum account to be used for payment for generating a new account with samsung blockchain platform sdk you need an instance of the accountmanager from sblockchain accountmanager provides methods for fetching, creating, restoring accounts, and other more once you have an instance of accountmanager, you can call generatenewaccount as shown below it has methods regarding accounts such as get, create, and restore refer to the samsung blockchain platform sdk documentations for more details hardwarewallet connectedhardwarewallet = mhardwarewalletmanager getconnectedhardwarewallet ; if connectedhardwarewallet != null { try { maccountmanager generatenewaccount connectedhardwarewallet, mcoinnetworkinfo get ; } catch interruptedexception e { e printstacktrace ; } catch executionexception e { e printstacktrace ; } } if an account is already created, textview is shown at the top of the app and the create account button is disabled to prevent further account creation list<account> accounts = maccountmanager getaccounts null, cointype eth, ethereumnetworktype goerli ; if !accounts isempty { methereumaccount = ethereumaccount accounts get accounts size - 1 ; tvaccountstatus settext methereumaccount getaddress ; btncreateaccount setenabled false ; } get instance for ledger service after creating an account, you can use it for payment in your shopping dapp each coin blockchain ledgers has its own system to be stored in blocks samsung blockchain platform sdk provides abstracted api sets to developers for signing and sending supported cryptocurrency transactions over the blockchain network create coinservicefactory and just use any ledger you want in this scenario, use ethereumservice ethereumservice service = ethereumservice coinservicefactory getcoinservice mcontext, mcoinnetworkinfo ; at this point, your shopping dapp is ready to provide payment methods working on ethereum notebefore the next step, you need at least one valid ethereum account show payment sheet when a user selects an item, the app should show the payment screen it must show “who will pay how much amount of ether to whom” in the blockchain world, ethereum ledgers require more information, such as transaction nonce, to record that transaction into ledgers with samsung blockchain platform sdk, developers can do everything needed to show the payment sheet, intent should be created, which is to call the payment activity on click event of product object fill the parameters required and startactivityforresult to show a payment sheet item item = itemlist get position ; biginteger price = ethereumutils convertethtowei item getprice ; ethereumservice service = ethereumservice coinservicefactory getcoinservice mcontext, mcoinnetworkinfo ; hardwarewallet connectedhardwarewallet = mhardwarewalletmanager getconnectedhardwarewallet ; intent intent = service createethereumpaymentsheetactivityintent mcontext, connectedhardwarewallet, ethereumtransactiontype eip1559, methereumaccount, sample_to_adderss, price, null, null ; startactivityforresult intent, 0 ; get ether from faucet you need money when you buy something a free faucet site is provided to get ether if you have an ethereum account, just go to webview fragment and press send me eth button see the result of transaction if the payment was performed successfully from the payment screen, the result of transaction can be received from onactivityresult if the transaction is performed properly, you can find the result_ok at resultcode from the intent, a txid is shown which can be used to check your transaction’s status call gettransactiondetail txid string api method in ethereumservice and check the block# if there’s any valid countable number, your transaction is stored in blocks successfully and the payment is done if you can’t find it, just wait it’s processing among ethereum nodes alternatively, simply find the txid in goerli testnet explorer run the project you have created and verify that it works properly open the app and select the product from the list in the payment screen, select the fee to pay to the ethereum network and confirm the transaction then, check the result of the generated transaction sample images of the app screen can be seen below you're done! congratulations! you have successfully achieved the goal of this code lab now, you can develop a shopping dapp using samsung blockchain platform sdk by yourself! if you're having trouble, you may download this file platform sdk complete code 3 95 mb to learn more about developing apps with samsung blockchain, visit developer samsung com/blockchain

galaxy gamedev galaxy gamedev provides various technical support options to assist game developers. related materials get support via our technical documents and online resources. galaxy gamedev learn about joining galaxy gamedev and best practices for game developers best practices find useful tips, know-hows and gamedev's stories in our technical blogs adaptive performance adaptive performance provides that way to manage both the thermals and performance of a game on a mobile device gpuwatch gpuwatch is a tool for observing gpu activity in your apps. you can find out how to use it and which devices support it here resources articles, white papers, and interesting code samples for game developers event archive videos and slides of key technical presentations from a variety of developer events what is galaxy gamedev and what do we do? through this program, we collaborate with many key partners in the gaming industry to support game developers with early engagement of new technologies for better gaming experiences read more adaptive performance the adaptive performance package provides an api to get feedback about the thermal and power state of mobile devices, enabling applications to make performance-relevant adaptions at runtime. read more code lab looking for a community? meet other developers. ask questions. find answers. read more

handle s pen's raw data objective learn how to implement s pen remote sdk and handle raw data of s pen modify a breakout game to control its paddle's position with s pen overview s pen remote sdk allows you to develop an application that uses s pen remote generated events s pen includes buttons and motion sensor, and events from these units can be delivered to the application through the s pen framework simple gestures, such as button click, 4-directional swipe, and circular gesture, can easily be recognized by defining remoteactions xml but to implement a more powerful application using the raw data of units, you must use the s pen remote sdk supported features the s pen remote sdk provides functions to identify motion coordinates and verifying if the side button is pressed for your application s pen remote sdk supports the following detailed features checking if the side button is pressed or released identifying motion coordinates two-dimensional device movement relative values of the current position from the previous position a positive value for the x-coordinates means to move right a positive value for the y-coordinates means to move up value range -1 0 ~ 1 0 set up your environment you will need the following java se development kit 10 jdk or later android studio latest version recommended samsung galaxy device with s pen remote capability galaxy note10 series or newer galaxy tab s6 series or newer galaxy s22 ultra or newer galaxy fold3 or newer noteif you're interested in the sample project of a breakout game, you can access it here sample code here is a sample code for you to start coding in this code lab download it and start your learning experience! s pen remote sdk sample code 189 4 kb start your project in android studio, click open an existing android studio project locate the android project from the directory and click ok to install spenremote for android studio add the spenremote-v1 0 x jar and sdk-v1 0 0 jar files to the libs folder in android studio add dependencies for the sdk library folder in build gradle dependencies{ implementation filetree dir 'libs', include ['* jar'] … } initialize spenremote in onresume of activity check whether s pen features are supported in the device check if already connected connect to the s pen framework using connect api if the connection is successful, register speneventlistener for each unit public class gameactivity extends activity { … private spenunitmanager mspenunitmanager = null; private boolean mbuttonpressed = false; … @override protected void onresume { … initspenremote ; //initialize spen remote } private void initspenremote { //check whether s pen features are supported in the device spenremote spenremote = spenremote getinstance ; if !spenremote isfeatureenabled spenremote feature_type_air_motion { return; } if !spenremote isfeatureenabled spenremote feature_type_button { return; } //check if already connected if spenremote isconnected { return; } //connect to the s pen framework mspenunitmanager = null; spenremote connect this, new spenremote connectionresultcallback { @override public void onsuccess spenunitmanager spenunitmanager { //if connection is successful, register speneventlistener for each units mspenunitmanager = spenunitmanager; initspeneventlistener ; } @override public void onfailure int e { } } ; } } private void initspeneventlistener { spenunit buttonunit = mspenunitmanager getunit spenunit type_button ; if buttonunit != null { mspenunitmanager registerspeneventlistener mspenbuttoneventlistener, buttonunit ; } spenunit airmotionunit = mspenunitmanager getunit spenunit type_air_motion ; if airmotionunit != null { mspenunitmanager registerspeneventlistener mspenairmotioneventlistener, airmotionunit ; } } handle spenevent on eventlistener register the event listener to spenunit using registerspeneventlistener method of spenunitmanager instance the data of spenevent passed to the speneventlistener is hidden you can refer to the data by casting it as a buttonevent or airmotionevent class private speneventlistener mspenbuttoneventlistener = new speneventlistener { @override public void onevent spenevent spenevent { buttonevent buttonevent = new buttonevent spenevent ; if buttonevent getaction == buttonevent action_down { mbuttonpressed = true; } else { mbuttonpressed = false; } } }; private speneventlistener mspenairmotioneventlistener = new speneventlistener { @override public void onevent spenevent spenevent { airmotionevent motionevent = new airmotionevent spenevent ; if mbuttonpressed { mpaddlecontroller move motionevent getdeltax * 400f ; } } }; release spenremote in onpause of activity in this part, spenremote will be released during onpause state disconnect is used to disconnect from the s pen framework @override protected void onpause { … releasespenremote ; } private void releasespenremote { spenremote spenremote = spenremote getinstance ; if spenremote isconnected { spenremote disconnect this ; } mspenunitmanager = null; } run the app now, everything is ready install the game on your device and launch it the paddle in the game can now be controlled by the s pen the game app screen should look like the following you're done! congratulations! you have successfully achieved the goal of this code lab now, you can handle raw data of the s pen and implement it on an app by yourself! if you're having trouble, you may download this file s pen remote sdk complete code 190 1 kb

samsung privileged health sdk the galaxy watch is equipped with samsung’s unique bioactive sensor that drives the next era of digital health monitoring first introduced on the galaxy watch4 series, the bioactive sensor uses a single unique chip that combines three powerful health sensors — optical heart rate, electrical heart signal, and bioelectrical impedance analysis — to deliver extensive readings that include heart rate and blood oxygen level what is samsung privileged health sdk the samsung privileged health sdk is specialized for galaxy watch4 devices or later it provides both raw sensor signal data from the samsung bioactive sensor and processed data with our differentiated features the sdk supports an improved health tracking capability to allow your applications to track the user's health data accurately with the accelerometer, raw ecg electrocardiogram , ppg photoplethysmogram , and heart rate including inter-beat interval in addition, it provides more advanced health features such as the body composition measurement, to enable compelling use cases for health and fitness applications the blood oxygen level and sweat loss after a running workout are also useful data to check a user's health status what you can do a watch application using the samsung privileged health sdk runs on a galaxy watch with wear os powered by samsung it will help users to monitor their overall health data and to provide an advanced healthy life the sdk can be utilized in various fields such as fitness, remote patient monitoring, senior care, digital therapy, fatigue risk management, and corporate wellness what are the advantages let's review more advantages of the samsung privileged health sdk low watch battery consumption the samsung privileged health sdk's accelerometer data, ppg data, and heart rate data are all received as a batching event the sdk's batching operation gathers sensor data in an application processor without waking up the cpu and sends an event at specific periods to a watch application this minimizes the watch's battery consumption and enables a watch application to track the user's status for the entire day receiving raw sensor data the accelerometer, ecg, and ppg data are provided as raw data by the samsung privileged health sdk this is very useful to conduct various analyses and more in-depth research with your own algorithm using galaxy watch specific features measuring the user's body composition, blood oxygen level, heart rate including the inter-beat interval, and sweat loss after a running workout is a feature specific to the galaxy watch using the privileged health sdk, your watch application can easily measure these data what data is provided the following data types are supported by the samsung privileged health sdk data type details accelerometer raw x, y, and z axis data provided as a batching event bia body composition data provided as an on-demand event ecg raw electrocardiogram data provided as an on-demand event heart rate heart rate data, including inter-beat interval provided as a batching event ppg raw ppg green, infrared, and red data provided as a batching and on-demand event skin temperature skin temperature data provided as a batching and on-demand events spo2 blood oxygen level provided as an on-demand event sweat loss lost water amount after a running workout experience samsung privileged health sdk you can practice using the samsung privileged health sdk with our code labs visit code lab to get started code labgalaxy watch, health measure blood oxygen level on galaxy watch code labgalaxy watch, health measure blood oxygen level and heart rate on galaxy watch code labgalaxy watch, health measure skin temperature on galaxy watch code labgalaxy watch, health transfer heart rate data from galaxy watch to a mobile device partner app program our partner app program is an exclusive service for the samsung privileged health sdk that allows users to discover engaging health and fitness applications the samsung privileged health sdk is now available for selected partners and we are reviewing all applications to join apply for partner app program restrictions the samsung privileged health sdk only works on galaxy watch4 devices or later models running wear os powered by samsung samsung privileged health sdk does not support an emulator more content

galaxy watch offers a convenient way of measuring exercise progress. modern sensors designed specifically for health services provide the most precise readings. after connecting to health services, you can measure certain exercises and track their values. this blog describes all the important steps to build an exercise tracking app using the health services api. we use example code introduced in health code lab for tracking exercise. you can download the source code from this code lab. health services defines a variety of exercise types. for a full exercise type list, take a look at exercisetype. on galaxy watch4 and galaxy watch4 classic, a repetition counter is available for the following exercises: back_extension barbell_shoulder_press bench_press bench_sit_up burpee crunch deadlift forward_twist dumbbell_curl_right_arm dumbbell_front_raise dumbbell_lateral_raise dumbbell_triceps_extension_left_arm dumbbell_triceps_extension_right_arm dumbbell_triceps_extension_two_arm dumbbell_curl_left_arm jump_rope jumping_jack lat_pull_down lunge squat upper_twist in this application, we are going to use deadlift. the example code used for deadlift can be easily adapted to track all repetition-based exercises. the basics of connecting to health services are covered in the blog using health services on galaxy watch. setting up an exercise once connected to the health services api, we are ready to set up the exercise. in this case we use deadlift as a sample exercise. first, we need to get the exercise client: exerciseclient exerciseclient = client.getexerciseclient(); after that, we need to set the exercise type in the configuration builder: exercisetype exercisetype = exercisetype.deadlift exerciseconfigbuilder exerciseconfigbuilder = exerciseconfig.builder() .setexercisetype(exercisetype); to see what can be tracked for our exercise, we need to check its capabilities. we do this by using a listenablefuture object and listening for a callback from health services. listenablefuture<exercisecapabilities> capabilitieslistenablefuture = exerciseclient.getcapabilities(); when we receive a callback, we can receive a set with capabilities: futurecallback<exercisecapabilities>() { @override public void onsuccess(@nullable exercisecapabilities result) { try { exercisetypecapabilities exercisetypecapabilities = result.getexercisetypecapabilities(exercisetype); set<datatype> exercisecapabilitiesset = exercisetypecapabilities.getexercisecapabilities(result); } if you do not want to track some of these values, at this point, you can remove them from a set. by default, all datatypes that a certain exercise can measure are being stored as a set. by removing them before setting up a configuration builder, you can exclude tracking unnecessary values. once we are ready, we can finish configuring an exercise: exerciseconfigbuilder = exerciseconfig.builder() .setexercisetype(exercisetype) .setdatatypes(exercisecapabilitiesset); setting up exercise listener an exercise listener is an object that allows us to get exercise updates from health services, whenever they are available. to set up the listener, we need to override three methods: exerciseupdatelistener exerciseupdatelistener = new exerciseupdatelistener() { @override public void onexerciseupdate(exerciseupdate update) { //processing your update } @override public void onavailabilitychanged(datatype datatype, availability availability) { //processing availability } @override public void onlapsummary(exerciselapsummary summary) { //processing lap summary } }; starting and stopping the exercise we are ready to start tracking our exercise. to do that, we use the listenablefuture object that gets callbacks from the healthservices api whenever an update is available. to build this object, we send our configuration to the exercise client while starting measurement: listenablefuture<void> startexerciselistenablefuture = exerciseclient.startexercise(exerciseconfigbuilder.build()); when we get a callback from the healthservices api, we start our listener: listenablefuture<void> updatelistenablefuture = exerciseclient.setupdatelistener(exerciseupdatelistener); we finish exercise in a similar way, by creating a listenablefuture object that asks the health services api to stop tracking exercise: listenablefuture<void> endexerciselistenablefuture = exerciseclient.endexercise() processing exercise update data exercise update data contains various information about the performed exercise. after setting up a listener, we retrieve it in a callback: public void onexerciseupdate(@nonnull exerciseupdate update) { try { updaterepcount(update); } catch (deadliftexception exception) { log.e(tag, "error getting exercise update: ", exception); } } in this example, we focus on one of most important readings—latest metrics. we store them in a map: map<datatype, list<datapoint>> map = update.getlatestmetrics(); now we can read particular values by looking for their key: list<datapoint> reppoints = map.get(datatype.rep_count); list<datapoint> caloriespoints = map.get(datatype.total_calories); the last value on the list is the latest reading in the current update. we can use it in our application, for example, when updating a label: string repvalue = string.format("%d", iterables.getlast(reppoints).getvalue().aslong()); txtreps.settext(string.format("reps count: %s", repvalue)); this is how exercise data can be accessed and processed using health services on galaxy watch. it’s a quick and convenient way to track its progress that everybody can implement into a watch application.

session wearable, design, android watch face studio's first journey and expectation for next a must-have to create beautiful watch faces! watch face studio (wfs) is now a little over a year old. hear the developers of wsh share the highs and lows of bringing the tool to life and meet the designers responsible for creating the eco watch face. this session is an insight into the year-long journey to create wfs – and the story of where we’re going next. speakers chulheon jeong samsung electronics related video video link video link watch face studio with dark mode create a beautiful watch face that is refined and provides a more comfortable viewing experience in low-light situations. code lab sdc22 apply conditional lines on watch faces learn how to create a watch face that responds to time and notification using conditional lines in watch face studio. 20 mins start sdc22 create a watch face using tag expressions learn how to create a watch face that responds based on the date, time, step count, heart rate, and battery level using tag expressions in watch face studio. 60 mins start

session health, wearable expand health experiences with galaxy watch the galaxy watch’s powerful bioactive sensor, together with the wear os powered by samsung, is transforming mobile health experiences. and now, this technology is even more powerful thanks to the samsung privileged health sdk. find out how the samsung privileged health sdk is allowing developers to retrieve raw or analyzed sensor data for their applications, including bia, ecg, blood oxygen level or sweat loss, and help users’ to accurately monitor their health stats. speakers sungchull lee samsung electronics code lab sdc22 measure blood oxygen level on galaxy watch create a health app for galaxy watches powered by wear os, utilizing the new samsung privileged health sdk to trigger and obtain blood oxygen level (spo2) measurement results. 30 mins start sdc22 measure blood oxygen level and heart rate on galaxy watch create a health app for galaxy watches powered by wear os, utilizing the new samsung privileged health sdk to trigger and obtain results of simultaneous blood oxygen level (spo2) and heart rate measurements. 40 mins start