Essential Books
Android Widgets edit

Metadata

Add the AppWidgetProviderInfo metadata in res/xml:

<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:minWidth="40dp"
    android:minHeight="40dp"
    android:updatePeriodMillis="86400000"
    android:previewImage="@drawable/preview"
    android:initialLayout="@layout/example_appwidget"
    android:configure="com.example.android.ExampleAppWidgetConfigure"
    android:resizeMode="horizontal|vertical"
    android:widgetCategory="home_screen">
</appwidget-provider>
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Widgets/
Widgets
Manifest Declaration -
Metadata
AppWidgetProvider Class
Two widgets with different layouts declaration
CreateIntegrate Basic Widget using Android Studio
Table Of Contents
1 Getting Started
2 Layouts
3 Gradle
4 RecyclerView onClickListeners
5 NavigationView
6 Intent
7 JSON handling with org.json
8 Android Studio
9 Resources
10 Data Binding Library
11 Exceptions
12 Getting Calculated View Dimensions
13 AsyncTask
14 SharedPreferences
15 Emulator
16 Material Design
17 Lint Warnings
18 Service
19 Storing Files in Internal and External Storage
20 WebView
21 Project SDK versions
22 RecyclerView
23 Google Maps
24 PorterDuff Mode
25 9-Patch images
26 Android NDK
27 RecyclerView Decorations
28 Camera 2 API
29 ViewPager
30 CardView
31 HttpURLConnection
32 SQLite
33 ADB Android Debug Bridge
34 ButterKnife
35 Supporting different screen resolutions
36 Glide
37 Retrofit2
38 Dialog
39 ACRA
40 GreenDAO
41 Formatting Strings
42 Notifications
43 AlarmManager
44 Fragments
45 Handler
46 Creating Custom Views
47 BroadcastReceiver
48 Activity
49 Snackbar
50 Runtime Permissions in API-23
51 Logging and using Logcat
52 VectorDrawable and AnimatedVectorDrawable
53 Tools Attributes
54 Toast
55 Interfaces
56 Animators
57 Location
58 Theme Style Attribute
59 The Manifest File
60 Parcelable
61 MediaPlayer
62 Multidex and the Dex Method Limit
63 Data Synchronization with Sync Adapter
64 Menu
65 Instant Run in Android Studio
66 Picasso
67 Bluetooth LE API
68 RoboGuice
69 Memory Leaks
70 Universal Image Loader
71 Volley
72 Widgets
73 Date and Time Pickers
74 Integrate Google Sign In
75 In-app billing
76 FloatingActionButton
77 ContentProvider
78 Dagger 2
79 Realm
80 Unit testing in Android with JUnit
81 Android Versions
82 Wi-Fi Connections
83 SensorManager
84 Localization with resources
85 ProgressBar
86 Custom Fonts
87 Vibration
88 Google Awarness APIs
89 Text to Speech (TTS)
90 UI Lifecycle
91 Spinner
92 Data Encryption / Decryption
93 Testing UI with Espresso
94 Writing UI tests
95 GreenRobot EventBus
96 OkHttp
97 Enhancing Performance Using Icon Fonts
98 Handling Depp Links
99 Canvas drawing using SurfaceView
100 Firebase
101 Crash Reporting Tools
102 Check Internet Connectivity
103 Facebook SDK
104 Unzip File
105 Android Places API
106 Creating your own libraries
107 Handling JSON with Gson
108 Device Display Metrics
109 TextView
110 ListView
111 Building Backwards Compatible Apps
112 Loader
113 ProGuard - Obfuscating and Shrinking your code
114 Detect Shake Event
115 Typedef Annotations
116 Capturing Screenshots
117 MVP Architecture
118 Orientation Changes
119 Xposed
120 Security
121 PackageManager
122 ImageView
123 Gesture Detection
124 Doze Mode
125 Android Sound and Media
126 SearchView
127 Camera and Gallery
128 Callback URL
129 Twitter APIs
130 SqlCipher integration
131 Drawables
132 Colors
133 ConstraintLayout
134 RenderScript
135 Fresco
136 Swipe to Refresh
137 AutoCompleteTextView
138 Installing apps with ADB
139 IntentService
140 AdMob
141 Implicit Intents
142 Publish to Play Store
143 Firebase Realtime Database
144 Image Compression
145 Email Validation
146 Keyboard
147 Button
148 TextInputLayout
149 Bottom Sheets
150 CoordinatorLayout and Behaviors
151 EditText
152 Paypal Gateway Integration
153 Firebase App Indexing
154 Firebase Crash Reporting
155 Displaying Google Ads
156 Vk SDK
157 Localized DateTime
158 Count Down Timer
159 Reading Barcode and QR codes
160 Otto Event Bus
161 TransitionDrawable
162 Port Mapping using Cling
163 Creating Overlay always-on-top Windows
164 ExoPlayer
165 Inter-app UI testing with UIAutomator
166 MediaSession
167 Speech to Text Conversion
168 FileProvider
169 Publish .aar file to Apache Archive with Gradle
170 XMPP
171 Authenticator
172 RecyclerView and LayoutManagers
173 AudioManager
174 Job Scheduling
175 Accounts and AccountManager
176 OpenCV
177 Split Screen Multi-Screen Activities
178 Threads
179 MediaStore
180 Time Utils
181 Touch Events
182 Fingerprint API
183 MVVM Architecture
184 BottomNavigationView
185 ORMLite
186 YouTube API
187 TabLayout
188 Retrofit2 with RxJava
189 DayNight Theme AppCompat
190 ShortcutManager
191 LruCache
192 Using Jenkins CI
193 Zip files
194 Vector Drawables
195 Fastlane
196 Define step value for RangeSeekBar
197 Getting started with OpenGL ES 2.0
198 Check Data Connection
199 Java Native Interface (JNI)
200 FileIO
201 Perfomance Optimization
202 Robolectric
203 Moshi
204 Strick Mode Policy
205 Internalization and localization
206 Retrolambda
207 SparseArray
208 Firebase Cloud Messaging
209 Shared Element Transitions
210 Android Things
211 VideoView
212 ViewFlipper
213 Dependency Injection with Dagger 2
214 Formatting phone numbers
215 Storing password securely
216 Android Kernel Optimization
217 Paint
218 AudioTrack
219 ProGuard
220 Create Android Custom ROMs
221 Java on Android
222 Pagination in RecyclerVi
223 Genymotion for Android
224 Handling touch and motion events
225 Creating Splash screen
226 ConstraintSet
227 CleverTap
228 Publish library to Maven repositories
229 ADB shell
230 Ping ICMP
231 AIDL
232 Using Kotlin
233 Autosizing TextView
234 Signing apps for release
235 Context
236 Activity Recognition
237 Secure SharedPreferences
238 Secure SharedPreferences
239 Bitmap Cache
240 Android x86 in VirtualBox
241 JCodec
242 Design Patterns
243 Okio
244 Google SignIn integration
245 TensorFlow
246 Game developmen
247 Notification Channel
248 Bluetooth Low Energy (LE)
249 Leak Canary
250 FuseView
251 SQLite using ContentValues
252 Enhancing Alert Dialogs
253 Hardware Button Events, Intents PTT
254 SpannableString
255 Looper
256 Optimized VideoView
257 Google Drive API
258 Animated AlertDialog Box
259 Annotation Processor
260 SyncAdapter with periodically do sync of data
261 Singleton Class for Toast Message
262 Fastjson
263 Android Architecture Components
264 Jackson
265 Play Store
266 Loading Bitmaps Effectively
267 Getting system font names
268 Smartcard
269 Convert vietnamese string to english
270 Contributors
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