The Android Arsenal - Animations

android-transition

Android-Transition allows the easy creation of view transitions that reacts to user inputs. The library is designed to be general enough such that the same transition can be applied to differnt UI components like Drawer, SlidingUpPanel, ViewPager, ObservableScrollView (work in progress), etc., as long as appropriate adapter is used.

Changelog

0.9.5

Add Animation.forceEndState()
Add DefaultAnimationListener
Add a bunch of delayed methods with varargs to ViewTransitionBuilder & MenuItemTransitionBuilder
Add ColorTransition
Add AutoReverseAnimationListener
Reduce transient objects created by ViewTransitionBuilder
Update dependent library versions: (com.github.ksoichiro:android-observablescrollview:1.5.1 --> 1.6.0, com.sothree.slidinguppanel:library:3.0.0 --> 3.2.1

0.9.4

Because somehow version 0.9.3 uploaded to Maven is broken :-/

0.9.3

Many *TransitionBuilder methods now takes varargs
Add visible()/invisible()/gone() to *TransitionBuilder that modifies target View's visibility
Add ScaledTransitionHandler
Improve Cascade
Fix erroneously sharing some TransitionBuilder states when cloned
Remove android:allowBackup from AndroidManifest.xml
Minor optimizations

0.9.2

Allow the transition/animation of a single MenuItem
Add ViewTransitionBuilder.height(int) / ViewTransitionBuilder.delayHeight(int)
AnimationManager/TransitionAnimation can specify either AnimationController or AnimatorController (Animator is needed to animate MenuItems but is, for some reason, slow for certain animations like View height manipulation)
Reduce garbage generation and other optimizations
Fix memory leak with MenuItem transition
Fix incorrect state when reverse transiting a View with a range not between 0f and 1f
Remove AnimationManager.removeAnimation(Animation) to support optimization, may add it back in the future

0.9.1

Fixed an embarrassing mistakenly-capitalized package name.

0.9.0

Please note that due to change in scope and direction, the code has been overhauled in 0.9.x and is incompatible with 0.8.x.

On the other hand now it only takes 8 lines of code to achieve the effect below that includes both non-interactive animation and interactive transition (drawer dragging):

On Android Studio update Gradle dependency to:

    compile 'com.github.kaichunlin.transition:core:0.9.4'

To add the corresponding slidinguppanel module:

    compile 'com.github.kaichunlin.transition:slidinguppanel:0.9.1'

0.8.3

Android Support Annotations are applied across the codebase which should help catching incorrect usage early. On Android Studio update Gradle dependency to:

    compile 'com.github.kaichunlin.transition:core:0.8.3'

Note that while many annotations such as @NonNull and @Nullable work on SDK Build Tools 22.0.x, some annotations like @IntRange and @FlatRange only work when preview version (23.0.0 rc2) is used.

Adapters that adapts to UI components not found in Android framework or Android Support Library are provided as their own libraries, the table below is the list of libraries:

Library	Function	Description in build.gradle
core	Provides core transition function and adapters	com.github.kaichunlin.transition:core:0.9.5
slidinguppanel	AndroidSlidingUpPanel Adapter	com.github.kaichunlin.transition:slidinguppanel:0.9.5

As an example, if an app requires the slidinguppanel module, which implicitly requires the core module, then build.gradle will look like below:

     dependencies {
       //other dependencies
       ...

        compile 'com.github.kaichunlin.transition:slidinguppanel:0.9.5'
     }

Usage

Transition is the primary object used to specify the desired operation on a View. The primary way to create Transitions is through the use of ViewTransitionBuilder and MenuItemTransitionBuilder.

These two classes provide fluent API with capability similar to ViewPropertyAnimator. Example:

//create a Transition for the View with ID R.id.big_icon that rotates it by 360 degrees, applies different scaling on the X & Y axes, move it on the x axis by 200 pixels. 
  Transition transition = ViewTransitionBuilder.transit(findViewById(R.id.big_icon)).rotation(0f, 360f).scaleX(1f, 0.2f).scaleY(1f, 0f).translationX(200f)).build();

Once created, Transition can be added to any adapter, which will manage and initiate the Transition when the user is manipulating an interactive View such as DrawerLayout:
```
mDrawerListenerAdapter.addTransition(transition);
```

ViewTransitionBuilder and MenuItemTransitionBuilder have the method buildAnimation() to create an Animation object:

  Animation animation = ViewTransitionBuilder.transit(findViewById(R.id.big_icon)).rotation(0f, 360f).scaleX(1f, 0.2f).scaleY(1f, 0f).translationX(200f)).buildAnimation();
  animation.startAnimation(300);

The app/ folder is a sample app containing dozens of examples.

Two steps to apply transition to any View (sample code):

Use the adapter corresponding to the ViewGroup type:

//uses DrawerListenerAdapter to handle DrawerLayout user interactions
DrawerListenerAdapter mDrawerListenerAdapter = new DrawerListenerAdapter(mDrawerToggle, R.id.drawerList);
mDrawerListenerAdapter.setDrawerLayout(mDrawerLayout);

Add desired transition to the adapter, ViewTransitionBuilder is used to build the transition:

mDrawerListenerAdapter.addTransition(
ViewTransitionBuilder.transit(findViewById(R.id.big_icon)).rotation(0f, 360f).scaleX(1f, 0.2f).scaleY(1f, 0f).translationX(200f));

android-transition

General

Additional

Blurb

android-transition

Changelog

Usage

Two steps to apply transition to any View (sample code):