What’s New in Android Noh HyeonSeok Android GDE 

Noh HyeonSeok Pluu Android GDE GDG Korea Android Naver 

DarkTheme Gesture Navigation Kotlin Jetpack Compose External Storage ViewBindings Location Connectivity SeJings Panel Bubbles External Storage 5th session Live Caption Suggested actions in notiTcations Privacy Accessibility Project Mainline Foldables G networks Digital wellbeing Focus Mode Family Link Audio playback capture New audio and vid n 1.1 and ANGLE al Networks API 1.2 ART optimiza Therma Kotlin 2nd session Privacy 4th session Accessibility 3rd session Background Activity 

Bubbles 

• ݽٚ জ ਤী ಴द • RAM, ੹ਗ, ࢿמী ؀ೠ ੉ग • बпೠ ࠁউ Ҋ۰ ࢎ೦ਵ۽ ࠙ܨ • Deprecated SWAs • Android Goীࢲ SAWs Permission ӂೠਸ ࠗৈೞ૑ ঋ਺ System AleX Window Se2ings.canDrawOverlays() == false 

• SAW੄ ؀উ଼ • NotiCcation ഐ୹ী ੄೧ ֢୹ • ઺ਃೠ ੘সਸ औѱ ੽Ӕೞח ߑߨ • ই੉௑җ Activityܳ ੐߬٣٘ೞח ഋక • ࢸ੿ > জ ߂ ঌܿ > ঌܿ > ঌܿ ೂࢶ (Q Beta4) Bubbles 

• Collapsed • ই੉௑җ ݫࣁ૑ ֢୹ • Expanded • ಟ୛૓࢚క۽, Window ղࠗ۽ Activity ֢୹ Bubbles Q Beta4ীࢲ ز੘ ࢚੉ ޙઁ (IssueTracker) • NotiCcationਵ۽ Bubble ޷֢୹ • ࠂࣻ Bubble ֢୹ 

extended 1. BubbleActivity in AndroidManifest.xml Required 

extended 2. BubbleMetadata ࢤࢿ val target = Intent(context, BubbleActivity::class.java) val bubbleIntent = PendingIntent.getActivity(context, 0, target, 0) // Create bubble metadata val bubbleData = NotiCcation.BubbleMetadata.Builder() .setDesiredHeight(600) .setIcon(Icon.createWithResource(context, R.drawable.icon)) .setIntent(bubbleIntent) .build() 

extended 3. Add BubbleMetadata to NotiTcation val builder = NotiCcation.Builder(context, CHANNEL_ID) .setContentIntent(contentIntent) .setSmallIcon(smallIcon) .setBubbleMetadata(bubbleData) 

• AutoExpandBubble • DeleteIntent • DesiredHeight • Icon • Intent • SuppressNotiCcation BubbleMetadata 

Multitasking Overview Picture-in-Picture Bubble Low Interaction High Interaction 

DARK THEME 

Light theme Dark Theme 

extended System theme seJing New in Q Beta 4 ࢸ੿ > ٣झ೒ۨ੉ 

extended ׮௼ ప݃ܳ ࢎਊೞب۾ ӂ੢ Google জ ׮௼ ప݃ ૑ਗ ৘੿ Dark theme: app suppoX 

extended forceDarkAllowed <item name="android:forceDarkAllowed">true</item> 

extended AppCompat 1.1.0 ... 

extended values/themes.xml values-night/themes.xml <style name="Theme.AppCompat.DayNight" parent="Theme.AppCompat"> Theme 

extended Apply Theme NightMode ࢸ੿ AppCompatDelegate.setDefaultNightMode() getDelegate().setLocalNightMode() ੹୓ ࢸ੿ ౠ੿ Activity 

extended Modes DAYNIGHT MODE_NIGHT_YES ೦࢚ Dark Theme MODE_NIGHT_NO ೦࢚ Light Theme MODE_NIGHT_FOLLOW_SYSTEM दझమ ࢸ੿ী ٮܲ Theme MODE_NIGHT_AUTO_BATTERY ߓఠܻ ੺੹ ݽ٘ੌ ٸ Dark Theme Add, AppCompat 1.1.0 

extended दझమ ప݃ܳ ؗযॳח (override) ഋక Options • Light • Dark • System Default Android Q 

extended ࢎਊ੗о Dark Theme ࢎਊೡ ࣻ ੓ח ߑߨਸ ઁҕ Options • Light • Dark • ੺੹ ݽ٘ Android P ੉ೞ 

extended • दрҗ ҙ۲ػ MODE_NIGHT_AUTO_TIME deprecated • Dark Themeܳ On/Oc оמೠ ӝמ ഋక • WebView + Force Dark ૑ਗ • Custom Tab ١ ૑ਗ ৘੿ • NotiCcation਷ ੗ز ੸ਊ / ழझథ਷ ࣻ੿ ೙ਃ Dark theme in Q 

extended Dark-theming your app Option A Theme.AppCompat.DayNight // ੉޷ ࢎਊ ઺ ࣻب ੓׮ Theme.DeviceDefault.DayNight // ٣߄੉झ ࢸ੿ী ٮۄ ThemeOverlay.DeviceDefault.Accent.DayNight Option B android.forceDarkallowed=“true” // AndroidManifest.xml ী ࢸ੿ view.setForceDarkallowed(false); // ForceDarkܳ ઁ৻୊ܻ 

extended Dark-theming your app Option C Night Modeী ҙ۲ػ -night ܻࣗझ ೠ੿੗৬ ࢸ੿ਵ۽ ੘স Option D OS੄ Night Modeܳ ޖद 

Gesture Navigation 

Android P 9.0 New System Navigation 

Gesture Navigation Android 10.0 

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• ӝࠄ੸ੋ ই੉٣যח दझమ UI ৔৉ਸ ઴੉ח Ѫ • ށੑഋ(Immersive) ੹୓ ചݶীࢲח 
 ઁझ୊۽ ׮ܲ ز੘ਸ ࢎਊ • OEMҗ ഈ۱ೞৈ ױࣽೠ ಴ળਸ ٜ݅ ৘੿ • ࢸ੿ > दझమ > ز੘ > System navigation
 (Q Beta4) Gesture Navigation 

More Gesture extended 

• System gestureо о૑ח ৔৉ • ઝ਋ஏ : Back Gesture • ೞױ : Home Gesture System gesture INSETS New in Q 

• জ੉ ੤੿੄ೡ ࣻ হח ৔৉ • Qীࢲח Home Gesture ਊب۽ ࢎਊ Mandatory System gesture INSETS New in Q 

Need exclusion 

Required system gesture New in Q 

Override gestures View.setSystemGestureExclusionRects(List rects) 

Consuming insets manually view.setOnApplyWindowInsetsListener() {v, insets -> insets.consumeSystemWindowInsets() ... } 

Text 

• Hyphenationо API 23ীࢲ بੑ • Android Qীࢲח Ocо ӝࠄ Text Hyphenation On Hyphenation Od 0 1.25 2.5 3.75 5 Text Measure in ms 

SystemFonts.getAvailableFonts().forEach { font -> // font.bucer, font.Cle, font.style, font.localeList, etc … } Find systems Fonts 

#include ASystemFontIterator* iterator = ASystemFontIterator_open(); ASystemFont* font = nullptr; while ((font = ASystemFontIterator_next(iterator)) != nullptr) { const char* path = ASystemFont_getFontFilePath(font); // ... ASystemFont_close(font); } ASystemFontIterator_close(iterator); Native API for system fonts 

• Suppot • • LineBackgroundSpan Another new feature LineHeightSpan LineBackgroundSpan 

Kotlin 

50% # 1 of Pro Android devs use Kotlin faster growing language 

Pevormance Optimize Debugging suppot API Annotation KTX Coroutines Suppot Jetpack Compose Kotlin plugin for Android Studio Refactoring/Lint Suppot Kotlin Trst 

• ݆਷ ѐߊ੗ٜ੉ Kotlin ࢎਊ੄ ݅઒ (Survay 25%) Kotlin Trst: Why? 

• Kotlinਸ ݢ੷ ੽Ӕೞח Ѫ਷ ਤ೷ • Java ঱যח ই૒ ૑ਗ • Java৬ ࢚ഐ ഐജ ୓௼ • Project৬ Team੄ ࢚ടਸ ୓௼ • ౟ۨ੉٘ য়೐ • ࢤ࢑۱, पઁ ݅઒, ۞׬ழ࠳, ࠽٘ ࣘب, APK ௼ӝ Kotlin Trst: should I switch? 

Java Kotlin Plahorm SDK SuppoX Yes Yes Android Studio SuppoX Yes Yes Lint Yes Yes Guided docs SuppoX Yes Yes API docs SuppoX Yes Yes AndoridX SuppoX Yes Yes AndroidX Kotlin-speciTc APIs (e.g. KTX, coroutines) N/A Yes Online training Best ecot Yes Samples Best ecot Yes Multi-plahorm Project No Yes Jetpack Compose No Yes What’s does Kotlin First mean? 

• Android Qীࢲ APIח Nullable Annotation ૑ਗ • Qীࢲח Null ೲਊਸ য়ܨ۽ ъઁച • Kotlin 1.3.30ীࢲ
 kapt੄ Incremental annotation processing Kotlin 2nd Kotlin Under the Hood 

NotiTcation 

• ૓زҗ ঌܿ ܻࣗী ೖ۽ • ઺ਃೞ૑݅, ૊п ୊ܻೞ૑ ঋইب غח ঌܿ Gentle NotiTcation 

• OS ৔৉੄ ਋ࢶ ࣽਤ • Prioritized (਋ࢶࣽਤ ૑੿ؽ) • Gentle (ઑਊ൤ ಴दؽ) • Prioritized • ೙ࣻ ੢஖ ӝמ • ழޭפா੉࣌ • ੉߮౟/ঌۈ • ࢎਊ੗ী ੄೧ Proritized/Gentle ੹ജ оמ Interruptions 

Jetpack Compose 

History of Android 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 1.0 Android Studio ART Recycler View Constraint
 Layout Kotlin Arch Components 

View ҙ۲ ௏٘ MyFragment.[kt|java] my_fragment.xml a2rs.xml styles.xml 

• ରࣁ؀ UI toolkit • Unbundled • ߈਽ഋ • Kotlinਵ۽ ੘ࢿ • React, Litho, View.js, Flu2er • Open Source Jetpack Compose 

• Jetpack UI Widget • Not View, Not Fragment => ؊ ੘਷ ݽٕ • Kotlin Compiler Plugin ࢎਊ • ӝઓ App/Code৬ ഐജ • Experimental What is Compose? 

extended @Composable fun Greeting(name: String) { Text("Hello $name") } Hello Jetpack Hello Kotlin Hello Google Hello Android Hello World 

• Annotation Processorܳ ޷ࢎਊ, Kotlin Compiler Plugin ࢎਊ • ೣࣻ੄ ݽٚ ݒѐ ߸ࣻח ҳࢿ ਃࣗ੄ ݒѐ ߸ࣻ ژח ࣘࢿ • XML ۨ੉ইਓ হ਺ • ؘ੉ఠ ߄ੋ٬ হ਺ @Composable 

extended BackpoX @Composable @GenerateView fun Greeting(name: String) { /* ... */ } val greeting: GreetingView = CndViewById("R.id.greeting") greeting.setName("Android") 

ViewBindings 

• CndViewById()੉ ࠛ೙ਃ • ஹ౵ੌ दী XML੄ ߄ੋ٬ ௏٘ ࢤࢿ • DataBindingҗ ਬࢎೠ ഋక • Null-safe / Type-safe ViewBindings 

extended @Override fun onCreate(savedInstanceState: Bundle) { super.onCreate(savedInstanceState) binding = SearchItemBinding.inÄate(layoutInÄater) setContentView(binding.rootView) } fun later() { binding.packageName.text = "android" } search_item.xml 

extended @Override fun onCreate(savedInstanceState: Bundle) { super.onCreate(savedInstanceState) binding = SearchItemBinding.inÄate(layoutInÄater) setContentView(binding.rootView) } fun later() { binding.packageName.text = "android" } search_item.xml 

extended search_item.xml @Override fun onCreate(savedInstanceState: Bundle) { super.onCreate(savedInstanceState) binding = SearchItemBinding.inÄate(layoutInÄater) setContentView(binding.rootView) } fun later() { binding.packageName.text = "android" } 

External Storage 

Common storage Downloads Only accessible via system picker Photo/Video Gated behind storage permission Audio Gated behind storage permission Internal app storage Only accessible to app Scoped Storage Internal Storageח ӝࠄ ࠺ҕѐ, ׮ܲ জ਷ ੽Ӕ ࠛо External Storage ੽Ӕਸ ਤ೧ࢲ
 READ/ WRITE_EXTERNAL_STORAGE ӂ ೠ ೙ਃ MediaStore Queryܳ ా೧ /sdcard ইې ੄ ޷٣যܳ Ѩ࢝ оמ 

targetSdk = P : ߸ز হ਺ targetSdk = Q ੉࢚ / opt-in • Sandbox : ೧׼ জীࢲ݅ ੽Ӕ оמ • Media Cles: MediaStore API৬ Storage Permission ೙ਃ • Photo Metadata : Storage/MediaLocation Permission ೙ਃ • MediaStore੄ ਤب/҃بח Qীࢲ deprecated, ExifIntevace ୶ୌ • ݽٚ ౵ੌ : AndroidManifestী ࢸ੿ ೙ਃ Scoped Storage 5th What’s New in Shared Storage 

Android R Scoped Storage will be 
 required in next year’s 
 major plaÅorm release for all apps, independent of target SDK level, so we recommend you add suppot to your app well in advance. 

Location, Location 

ࢎਊ੗ ೐ۄ੉ߡद ъച, ࢿמ ੷ೞܳ ࠁ৮ • ೦࢚ ೲਊ / জ ࢎਊ ઺ / Ѣࠗ Permission ୶о • ACCESS_FINE_LOCATION / ACCESS_COARSE_LOCATION / ACCESS_BACKGROUND_LOCATION Location 

extended // ੌ߈੸ੋ ਤ஖ ਃ୒ ActivityCompat.requestPermissions(this, arrayOf(ACCESS_COARSE_LOCATION), requestCode) RequestPermission 

extended // Backgroundীࢲ ਤ஖ ਃ୒द ActivityCompat.requestPermissions(this, arrayOf(ACCESS_COARSE_LOCATION, ACCESS_BACKGROUND_LOCATION), requestCode) RequestPermission 

extended Foreground Service extended 

extended AndroidManifest.xml targetSdk : Q 

extended AndroidManifest.xml targetSdk : P ੉ೞ 

extended AndroidManifest.xml targetSdk : P ੉ೞ Auto Include 

٣߄੉झܳ Q সӒۨ੉٘ द ӂೠ ߸҃ Target 
 SDK Coarse or Cne permission granted? Background permission deCned in manifest? Updated default 
 permission state Q Yes Yes Foreground and background access Q Yes No Foreground access only Q No (Ignored by system) No access 9 ੉ೞ Yes Automatically added by the system at device upgrade time Foreground and background access 9 ੉ೞ No (Ignored by system) No access 

Location best practices • ೙ਃೠ ӂೠ݅ ਃ୒ • Foreground ݅ ਤ஖о ೙ਃೠ ҃਋ ACCESS_BACKGROUND_LOCATION ח ࢤۚ • ForegroundServiceীࢲ ೡ ҃਋ “location” ServiceType ੉ਊ • TargetSdkо Q޷݅ੋ ҃਋, 
 ACCESS_BACKGROUND_LOCATION੉ ੗زਵ۽ ୶о 

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Background Activity 

• Backgroundীࢲ statActivity() ઁೠ • Activity द੘ ઑѤ • Foreground জ • System, Broadcastীࢲ PendingIntent ࢎਊ • Foreground NotiCcation ࢎਊ • Android Qীࢲ प೯غח ݽٚ জী ੸ਊ Background Activity staXs 4th Privacy Change in Android Q 

extended Warning Message 

extended val fullScreenIntent = Intent(this, CallActivity::class.java) val fullScreenPendingIntent = PendingIntent.getActivity(this, 0, fullScreenIntent, PendingIntent.FLAG_UPDATE_CURRENT) val notiCcationBuilder = NotiCcationCompat.Builder(this, CHANNEL_ID) .setSmallIcon(R.drawable.notiCcation_icon) .setContentTitle("Incoming call") .setContentText("(919) 555-1234") .setPriority(NotiCcationCompat.PRIORITY_HIGH) .setCategory(NotiCcationCompat.CATEGORY_CALL) .setFullScreenIntent(fullScreenPendingIntent, true) val incomingCallNotiCcation = notiCcationBuilder.build() 

• ঌۈ, ੹ച৬ э਷ ӟәೠ ࢎਊ੗ ߈਽ ਃҳ • FullScreenIntent • Foreground Service + NotiCcation Need to user's attention urgently 

Connectivity 

Disconnect 

• ࢸ੿ ߸҃ਸ ೡ ࣻ ੓ח ചݶ ઁҕ • ੋఠ֔ োѾ, WiFi, NFC, Volume • AndroidX۽ ઁҕ ৘੿ • Android 9 (API 23) ੉ೞীࢲח ੸੺ೠ ചݶ੉ য়೑ SeJings Panel val panelIntent = Intent(Se2ings.Panel.se2ings_panel_type) statActivityForResult(panelIntent) 

ACTION_INTERNET_CONNECTIVITY ࠺೯ӝ ݽ٘, Wi-Fi, ݽ߄ੌ ؘ੉ఠ ࠺೯ӝ ݽ٘, Wi-Fi, ݽ߄ੌ ؘ੉ఠ ACTION_WIFI Only Wi-Fi ACTION_NFC NFC ҙ۲ ࢸ੿ ACTION_VOLUME ࠅܬ ҙ۲ ࢸ੿ seJings_panel_type 

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Summary 

Android Q Beta 4 and Final APIs! 2019.06.06 

MAC address randomization Unbundle package installer Updatable privacy policies and handle Ad library dependency Camera metadat Foreground Service APIs for use cases Limit background activity launches C Unbundle Restrict Screen Reading Call screening Restrictions on phone, Call logs and Device identifier lockdown Location remind Remove contacts affinity Indicate location usage in the status bar TLSv3 ermissions for OEMs and carriers Strongly typed storage Hide USB serial number until app has permission Restrict access SMS receiver verification A Shadow call stack - Kernel and user space Scudo hardened Execute-only memory Security key me permissions for all apps Opportunistic location access nted Location gency Location sharing with other apps ess cricPrompt Consent for Device Admin efactor accessibility service capabilities rivacy-sensitive WiFi scanning Restrict app icon hiding Increased protection for Serial Number access ion Media Stack is updatable Conscrypt is updatable WPA3 Adiantum Key replacement for ne Encryption for entry-level devices 

• Update non-SDK inteuace restrictions • Permissions changes for fullscreen intents • Privacy (Scope storage, Location, Background activity, Hardware identiCers) • android.preference ۄ੉࠳۞ܻ ૑ਗ ઺ױ • Suppot for foldables • CameraX, ViewPager2 • etc.. etc… Android Q Checklist 

What’s New in Android What's New in the Android OS User Inteuace Dark Theme & Gesture Navigation Recommend Overview of Privacy Changes in Android Q ѐߊ੗ܳ ਤೠ উ٘۽੉٘ Q ੿ܻ by নଲࢳ 

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