Bluetooth Low Energy

Introduction

This documentation is meant as an enhancement over the original documentation and it will focus on the latest Bluetooth LE API introduced in Android 5.0 (API 21). Both Central and Peripheral roles will be covered as well as how to start scanning and advertising operations.

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Bluetooth Low Energy (LE):

*Bluetooth Low Energy

*Finding BLE Devices

*Connecting to a GATT Server

*Writing and Reading from Characteristics

*Subscribing to Notifications from the Gatt Server

*Advertising a BLE Device

*Using a Gatt Server

Table Of Contents

0Getting Started

3RecyclerView onClickListeners

4NavigationView

6JSON handling with org.json

7Android Studio

9Data Binding Library

11Getting Calculated View Dimensions

13SharedPreferences

15Material Design

16Lint Warnings

18Storing Files in Internal and External Storage

20Project SDK versions

23PorterDuff Mode

249-Patch images

26RecyclerView Decorations

30HttpURLConnection

32ADB Android Debug Bridge

34Supporting different screen resolutions

40Formatting Strings

41Notifications

45Creating Custom Views

46BroadcastReceiver

49Runtime Permissions in API-23

50Logging and using Logcat

51VectorDrawable and AnimatedVectorDrawable

52Tools Attributes

57Theme Style Attribute

58The Manifest File

61Multidex and the Dex Method Limit

62Data Synchronization with Sync Adapter

64Instant Run in Android Studio

66Bluetooth LE API

69Universal Image Loader

72Date and Time Pickers

73Integrate Google Sign In

74In-app billing

75FloatingActionButton

76ContentProvider

79Unit testing in Android with JUnit

80Android Versions

81Wi-Fi Connections

82SensorManager

83Localization with resources

87Google Awarness APIs

88Text to Speech (TTS)

91Data Encryption / Decryption

92Testing UI with Espresso

93Writing UI tests

94GreenRobot EventBus

96Enhancing Performance Using Icon Fonts

97Handling Depp Links

98Canvas drawing using SurfaceView

100Crash Reporting Tools

101Check Internet Connectivity

102Facebook SDK

104Android Places API

105Creating your own libraries

106Handling JSON with Gson

107Device Display Metrics

110Building Backwards Compatible Apps

112ProGuard - Obfuscating and Shrinking your code

113Detect Shake Event

114Typedef Annotations

115Capturing Screenshots

116MVP Architecture

117Orientation Changes

120PackageManager

122Gesture Detection

124Android Sound and Media

126Camera and Gallery

127Callback URL

128Twitter APIs

129SqlCipher integration

132ConstraintLayout

133RenderScript

135Swipe to Refresh

136AutoCompleteTextView

137Installing apps with ADB

138IntentService

140Implicit Intents

141Publish to Play Store

142Firebase Realtime Database

143Image Compression

144Email Validation

147TextInputLayout

148Bottom Sheets

149CoordinatorLayout and Behaviors

151Paypal Gateway Integration

152Firebase App Indexing

153Firebase Crash Reporting

154Displaying Google Ads

156Localized DateTime

157Count Down Timer

158Reading Barcode and QR codes

159Otto Event Bus

160TransitionDrawable

161Port Mapping using Cling

162Creating Overlay always-on-top Windows

164Inter-app UI testing with UIAutomator

165MediaSession

166Speech to Text Conversion

167FileProvider

168Publish .aar file to Apache Archive with Gradle

170Authenticator

171RecyclerView and LayoutManagers

172AudioManager

173Job Scheduling

174Accounts and AccountManager

176Split Screen Multi-Screen Activities

180Touch Events

181Fingerprint API

182MVVM Architecture

183BottomNavigationView

187Retrofit2 with RxJava

188DayNight Theme AppCompat

189ShortcutManager

191Using Jenkins CI

193Vector Drawables

195Define step value for RangeSeekBar

196Getting started with OpenGL ES 2.0

197Check Data Connection

198Java Native Interface (JNI)

200Perfomance Optimization

203Strick Mode Policy

204Internalization and localization

207Firebase Cloud Messaging

208Shared Element Transitions

209Android Things

212Dependency Injection with Dagger 2

213Formatting phone numbers

214Storing password securely

215Android Kernel Optimization

219Create Android Custom ROMs

220Java on Android

221Pagination in RecyclerVi

222Genymotion for Android

223Handling touch and motion events

224Creating Splash screen

225ConstraintSet

227Publish library to Maven repositories

231Using Kotlin

232Autosizing TextView

233Signing apps for release

235Activity Recognition

236Secure SharedPreferences

237Secure SharedPreferences

238Bitmap Cache

239Android x86 in VirtualBox

241Design Patterns

243Google SignIn integration

245Game developmen

246Notification Channel

247Bluetooth Low Energy (LE)

250SQLite using ContentValues

251Enhancing Alert Dialogs

252Hardware Button Events, Intents PTT

253SpannableString

255Optimized VideoView

256Google Drive API

257Animated AlertDialog Box

258Annotation Processor

259SyncAdapter with periodically do sync of data

260Singleton Class for Toast Message

262Android Architecture Components

265Loading Bitmaps Effectively

266Getting system font names

268Convert vietnamese string to english

269Contributors