Titanic for Android


Source link: https://github.com/RomainPiel/Titanic

Titanic for Android

This library is DEPRECATED, as I don't have time to mainatin it anymore. But feel free to go through the code and copy that into your project, it still does its job.

Titanic is an Android experiment reproducing this effect.

How to use

Add a TitanicTextView to your layout:

<com.romainpiel.titanic.TitanicTextView
  android:id="@+id/titanic_tv"
  android:text="@string/loading"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:textColor="#212121"
  android:textSize="70sp"/>

To start the animation:

titanic = new Titanic();
 titanic.start(myTitanicTextView);

You may want to keep track of the titanic instance after the animation is started if you want to stop it.

To stop it:

titanic.cancel();

How does it work?

Quick version

Titanic is a simple illusion obtained by applying an animated translation on the TextView TextPaint Shader's matrix.

Less quick version

What is a Shader?

A Shader is a class defining spans of colors. It is installed in a Paint. It's usually following a certain strategy, so you have LinearGradient shaders, RadialGradient shaders BitmapShader shaders, etc...

Shader attributes:

  • tile mode: how the shader color spans should be repeated on the x and y axis.
  • local matrix: can be used to apply transformations on the shader

Why are you bugging me with these notions?

Well because it is exaclty what we are using in this experiment.

In TitanicTextView, we create a BitmapShader containing a wave bitmap.

We set the tile mode to:

  • x: TileMode.REPEAT. The bitmap is repeated on the x-axis
  • y: Tilemode.CLAMP. The edge colors are repeated outside the bitmap on the y-axis

We have a maskX and a maskY variable that will define the position of the shader. So at every onDraw() we will take in account these values and translate the shader's local matrix at the right position.

We also have a variable offsetY to make the value maskY usable. So when maskY is equal to 0, the wave is at the center of the view.

How is it animating?

The animation is based on Android Animator API. I am not going to go through that part. Go read the documentation if you need some explanations.

In this experiment there are 2 animations.

  • One is moving the wave horizontally from 0 to 200 (the width of the wave bitmap).
  • The second one is moving the wave vertically from the bottom half to the top half.

To animate these translations, all we need is to apply an animator on maskX and maskY. The position of the shader's matrix will be updated automatically in onDraw().

I want more examples

Glad you said that. Go check out Shimmer-android. It's based on the same concept with a LinearGradient shader.

Sample

See the sample for a common use of this library.

License

Copyright 2014 Romain Piel  Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License. You may obtain a copy of the License at
  http://www.apache.org/licenses/LICENSE-2.0  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. 

Resources

BannerTime creates a scheduled popup to show your personal message.

This library runs background service that is listening for shake movements in device.

Android library for material scrolling techniques.

Features:

  • Easily implement material scrolling techniques with RecyclerView.
  • Customize the behavior while scrolling.
  • Support RecyclerView in ViewPager.

This tool can retrieve dex, jar, smali, xml files, res, etc.

BatchPackApk is a tool for batch package Android apk with channel string.

A pretty label view.

Topics


2D Engines   3D Engines   9-Patch   Action Bars   Activities   ADB   Advertisements   Analytics   Animations   ANR   AOP   API   APK   APT   Architecture   Audio   Autocomplete   Background Processing   Backward Compatibility   Badges   Bar Codes   Benchmarking   Bitmaps   Bluetooth   Blur Effects   Bread Crumbs   BRMS   Browser Extensions   Build Systems   Bundles   Buttons   Caching   Camera   Canvas   Cards   Carousels   Changelog   Checkboxes   Cloud Storages   Color Analysis   Color Pickers   Colors   Comet/Push   Compass Sensors   Conferences   Content Providers   Continuous Integration   Crash Reports   Credit Cards   Credits   CSV   Curl/Flip   Data Binding   Data Generators   Data Structures   Database   Database Browsers   Date &   Debugging   Decompilers   Deep Links   Dependency Injections   Design   Design Patterns   Dex   Dialogs   Distributed Computing   Distribution Platforms   Download Managers   Drawables   Emoji   Emulators   EPUB   Equalizers &   Event Buses   Exception Handling   Face Recognition   Feedback &   File System   File/Directory   Fingerprint   Floating Action   Fonts   Forms   Fragments   FRP   FSM   Functional Programming   Gamepads   Games   Geocaching   Gestures   GIF   Glow Pad   Gradle Plugins   Graphics   Grid Views   Highlighting   HTML   HTTP Mocking   Icons   IDE   IDE Plugins   Image Croppers   Image Loaders   Image Pickers   Image Processing   Image Views   Instrumentation   Intents   Job Schedulers   JSON   Keyboard   Kotlin   Layouts   Library Demos   List View   List Views   Localization   Location   Lock Patterns   Logcat   Logging   Mails   Maps   Markdown   Mathematics   Maven Plugins   MBaaS   Media   Menus   Messaging   MIME   Mobile Web   Native Image   Navigation   NDK   Networking   NFC   NoSQL   Number Pickers   OAuth   Object Mocking   OCR Engines   OpenGL   ORM   Other Pickers   Parallax List   Parcelables   Particle Systems   Password Inputs   PDF   Permissions   Physics Engines   Platforms   Plugin Frameworks   Preferences   Progress Indicators   ProGuard   Properties   Protocol Buffer   Pull To   Purchases   Push/Pull   QR Codes   Quick Return   Radio Buttons   Range Bars   Ratings   Recycler Views   Resources   REST   Ripple Effects   RSS   Screenshots   Scripting   Scroll Views   SDK   Search Inputs   Security   Sensors   Services   Showcase Views   Signatures   Sliding Panels   Snackbars   SOAP   Social Networks   Spannable   Spinners   Splash Screens   SSH   Static Analysis   Status Bars   Styling   SVG   System   Tags   Task Managers   TDD &   Template Engines   Testing   Testing Tools   Text Formatting   Text Views   Text Watchers   Text-to   Toasts   Toolkits For   Tools   Tooltips   Trainings   TV   Twitter   Updaters   USB   User Stories   Utils   Validation   Video   View Adapters   View Pagers   Views   Watch Face   Wearable Data   Wearables   Weather   Web Tools   Web Views   WebRTC   WebSockets   Wheel Widgets   Wi-Fi   Widgets   Windows   Wizards   XML   XMPP   YAML   ZIP Codes