Essential Books

Add styles to a TextView

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In the following example, we create an Activity to display a single TextView.

The TextView will use a SpannableString as its content, which will illustrate some of the available styles.

Here’ what we’re gonna do with the text : 

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
     
 SpannableString styledString
  = new SpannableString("Large\n\n"     // index 0 - 5
       + "Bold\n\n"          // index 7 - 11
       + "Underlined\n\n"    // index 13 - 23
       + "Italic\n\n"        // index 25 - 31
       + "Strikethrough\n\n" // index 33 - 46
       + "Colored\n\n"       // index 48 - 55
       + "Highlighted\n\n"   // index 57 - 68
       + "K Superscript\n\n" // "Superscript" index 72 - 83 
       + "K Subscript\n\n"   // "Subscript" index 87 - 96
       + "Url\n\n"           //  index 98 - 101
       + "Clickable\n\n");   // index 103 - 112
  
 // make the text twice as large
 styledString.setSpan(new RelativeSizeSpan(2f), 0, 5, 0);
  
 // make text bold
 styledString.setSpan(new StyleSpan(Typeface.BOLD), 7, 11, 0);
  
 // underline text
 styledString.setSpan(new UnderlineSpan(), 13, 23, 0);
  
 // make text italic
 styledString.setSpan(new StyleSpan(Typeface.ITALIC), 25, 31, 0);
  
 styledString.setSpan(new StrikethroughSpan(), 33, 46, 0);
  
 // change text color
 styledString.setSpan(new ForegroundColorSpan(Color.GREEN), 48, 55, 0);
  
 // highlight text
 styledString.setSpan(new BackgroundColorSpan(Color.CYAN), 57, 68, 0);
  
 // superscript
 styledString.setSpan(new SuperscriptSpan(), 72, 83, 0);
 // make the superscript text smaller
 styledString.setSpan(new RelativeSizeSpan(0.5f), 72, 83, 0);
  
 // subscript
 styledString.setSpan(new SubscriptSpan(), 87, 96, 0);
 // make the subscript text smaller
 styledString.setSpan(new RelativeSizeSpan(0.5f), 87, 96, 0);
  
 // url
 styledString.setSpan(new URLSpan("http://www.google.com"), 98, 101, 0);
  
 // clickable text
 ClickableSpan clickableSpan = new ClickableSpan() {

 @Override
 public void onClick(View widget) {
// We display a Toast. You could do anything you want here.
Toast.makeText(SpanExample.this, "Clicked", Toast.LENGTH_SHORT).show();
 
  }
};
styledString.setSpan(clickableSpan, 103, 112, 0);
// Give the styled string to a TextView
TextView textView = new TextView(this);
// this step is mandated for the url and clickable styles.
textView.setMovementMethod(LinkMovementMethod.getInstance());
// make it neat
textView.setGravity(Gravity.CENTER);
textView.setBackgroundColor(Color.WHITE);
textView.setText(styledString);
setContentView(textView);

}

And the result will look like this:

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SpannableString:
* SpannableString
* Add styles to a TextView
* Multi string with multi color
Table Of Contents
0 Getting Started
1 Layouts
2 Gradle
3 RecyclerView onClickListeners
4 NavigationView
5 Intent
6 JSON handling with org.json
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34 Supporting different screen resolutions
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36 Retrofit2
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40 Formatting Strings
41 Notifications
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43 Fragments
44 Handler
45 Creating Custom Views
46 BroadcastReceiver
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49 Runtime Permissions in API-23
50 Logging and using Logcat
51 VectorDrawable and AnimatedVectorDrawable
52 Tools Attributes
53 Toast
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58 The Manifest File
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61 Multidex and the Dex Method Limit
62 Data Synchronization with Sync Adapter
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88 Text to Speech (TTS)
89 UI Lifecycle
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92 Testing UI with Espresso
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95 OkHttp
96 Enhancing Performance Using Icon Fonts
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99 Firebase
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101 Check Internet Connectivity
102 Facebook SDK
103 Unzip File
104 Android Places API
105 Creating your own libraries
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107 Device Display Metrics
108 TextView
109 ListView
110 Building Backwards Compatible Apps
111 Loader
112 ProGuard - Obfuscating and Shrinking your code
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115 Capturing Screenshots
116 MVP Architecture
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135 Swipe to Refresh
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150 EditText
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154 Displaying Google Ads
155 Vk SDK
156 Localized DateTime
157 Count Down Timer
158 Reading Barcode and QR codes
159 Otto Event Bus
160 TransitionDrawable
161 Port Mapping using Cling
162 Creating Overlay always-on-top Windows
163 ExoPlayer
164 Inter-app UI testing with UIAutomator
165 MediaSession
166 Speech to Text Conversion
167 FileProvider
168 Publish .aar file to Apache Archive with Gradle
169 XMPP
170 Authenticator
171 RecyclerView and LayoutManagers
172 AudioManager
173 Job Scheduling
174 Accounts and AccountManager
175 OpenCV
176 Split Screen Multi-Screen Activities
177 Threads
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180 Touch Events
181 Fingerprint API
182 MVVM Architecture
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184 ORMLite
185 YouTube API
186 TabLayout
187 Retrofit2 with RxJava
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190 LruCache
191 Using Jenkins CI
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194 Fastlane
195 Define step value for RangeSeekBar
196 Getting started with OpenGL ES 2.0
197 Check Data Connection
198 Java Native Interface (JNI)
199 FileIO
200 Perfomance Optimization
201 Robolectric
202 Moshi
203 Strick Mode Policy
204 Internalization and localization
205 Retrolambda
206 SparseArray
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208 Shared Element Transitions
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219 Create Android Custom ROMs
220 Java on Android
221 Pagination in RecyclerVi
222 Genymotion for Android
223 Handling touch and motion events
224 Creating Splash screen
225 ConstraintSet
226 CleverTap
227 Publish library to Maven repositories
228 ADB shell
229 Ping ICMP
230 AIDL
231 Using Kotlin
232 Autosizing TextView
233 Signing apps for release
234 Context
235 Activity Recognition
236 Secure SharedPreferences
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238 Bitmap Cache
239 Android x86 in VirtualBox
240 JCodec
241 Design Patterns
242 Okio
243 Google SignIn integration
244 TensorFlow
245 Game developmen
246 Notification Channel
247 Bluetooth Low Energy (LE)
248 Leak Canary
249 FuseView
250 SQLite using ContentValues
251 Enhancing Alert Dialogs
252 Hardware Button Events, Intents PTT
253 SpannableString
254 Looper
255 Optimized VideoView
256 Google Drive API
257 Animated AlertDialog Box
258 Annotation Processor
259 SyncAdapter with periodically do sync of data
260 Singleton Class for Toast Message
261 Fastjson
262 Android Architecture Components
263 Jackson
264 Play Store
265 Loading Bitmaps Effectively
266 Getting system font names
267 Smartcard
268 Convert vietnamese string to english
269 Contributors