Material Design Hub: Material Animations

ExpandableSelector Android Library

Description:- ExpandableSelector is an Android library created to show a list of Button/ImageButton widgets inside a animated container which can be collapsed or expanded.

Min SDK: 14 (Android 4.0–4.0.2 Ice Cream Sandwich).

Contributors: https://android-arsenal.com/user/Karumi

Click Here for Download ExpandableSelector Android Library

Step 1: Create a new Android Project

Step 2: Import Library to your Android Application Project

1: File->New->Other

2: Select Android Project

3: Select "Create Project from existing source"

4: Click "Browse and select ExpandableSelector Android Library,

5: Finish

6: Right-click on your project -> Properties

7: In Android->Library section click Add

8: select recently added project -> Ok

9: that's it!

How To Use ExpandableSelector Android Library:

To use ExpandableSelector in your application you have to follow this steps:

1 - Add ExpandableSelector to your layout:

 <com.karumi.expandableselector.ExpandableSelector
      android:id="@+id/es_sizes"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"/>

2 - During your Activity/Fragment creation lifecycle create a list of ExpandableItem instances and configure them to be used inside your ExpandableSelector widget:

private void initializeSizesExpandableSelector() {
    ExpandableSelector sizesExpandableSelector = (ExpandableSelector) findViewById(R.id.es_sizes);
    List<ExpandableItem> expandableItems = new ArrayList<ExpandableItem>();
    expandableItems.add(new ExpandableItem("XL"));
    expandableItems.add(new ExpandableItem("L"));
    expandableItems.add(new ExpandableItem("M"));
    expandableItems.add(new ExpandableItem("S"));
    sizesExpandableSelector.showExpandableItems(expandableItems);
}

3 - To be able to listen the animation events configure a ExpandableSelectorListener instance:

private void configureExpandableSelectorListener() {

    sizesExpandableSelector.setExpandableSelectorListener(new ExpandableSelectorListener() {
          @Override public void onCollapse() {
            //Do something here
          }

          @Override public void onExpand() {
            //Do something here
          }

          @Override public void onCollapsed() {
            //Do something here
          }

          @Override public void onExpanded() {
            //Do something here
          }
        });
}

4 - To be able to listen the click events configure a OnExpandableItemClickListener instance:

private void configureExpandableSelectorClickListener() {

    sizesExpandableSelector.setOnExpandableItemClickListener(new OnExpandableItemClickListener() {
          @Override public void onExpandableItemClickListener(int index, View view) {
             //Do something here
          }
        });
}

Customization

You can easily customize the appearance of your ExpandableItem instances. Just asign a value toexpandableItemSyle attribute in your theme and make it reference a custom style.

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="expandableItemStyle">@style/ExpandableItemStyle</item>
</style>

<style name="ExpandableItemStyle">
    <item name="android:layout_height">@dimen/item_size</item>
    <item name="android:layout_width">@dimen/item_size</item>
    <item name="android:background">@drawable/bg_item_with_title</item>
    <item name="android:layout_margin">@dimen/item_margin</item>
    <item name="android:textColor">@color/gray</item>
    <item name="android:textSize">@dimen/item_text_size</item>
</style>

The resources you can show in the Button/ImageButton widgets automatically added toExpandableSelector are:

Background resource identifier configured as Button/ImageButton background.
Resource identifier configured as ImageButton image source.
Title configured as Button text.

All this information will be provided to the ExpandableSelector inside a List<ExpandableItem> object created by the library user.

Some extra configuration parameters can be provided from the XML like styleable attributes:

  <com.karumi.expandableselector.ExpandableSelector
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      expandable_selector:hide_background_if_collapsed="true"
      expandable_selector:hide_first_item_on_collapse="true"
      expandable_selector:animation_duration="100">

The attributes you can configure are:

expandable_selector:hide_background_if_collapsed: Changes the background associated to theExpandableSelector widget to a transparent one while the widget is collapsed.
expandable_selector:hide_first_item_on_collapse: Changes the first item visibility to View.INVISIBLE when the ExpandableSelector is collapsed.
expandable_selector:animation_duration: Changes the animation duration in milliseconds to the one indicated.

Add it to your project

Add ExpandableSelector dependency to your build.gradle file

dependencies{
    compile 'com.karumi:expandableselector:1.0.0'
}

or to your pom.xml if you are using Maven instead of Gradle

<dependency>
    <groupId>com.karumi</groupId>
    <artifactId>expandableselector</artifactId>
    <version>1.0.0</version>
    <type>aar</type>
</dependency>

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Android Transition animations explanation with examples.

Min SDK:- 16 (Android 4.1 Jelly Bean)

Author:- https://github.com/lgvalle/Material-Animations/graphs/contributors

Description:-
Android Transitions
android Transition Framework can be used for three main things:

1: Animate View elements in transitions between activites (or fragments)
2: Animate shared elements (hero views) in transitions between activities (or fragments)
Animate View elements from one activity scene to another.

1. Transitions between Activities

Animate existing activity layout content (non-hero views)

Click Here for Download Material Animations Android Library

How to use Material Animations Android Library in eclipse :-

Step 1: Create a new Android Project

Step 2: Import Library to your Android Application Project
1: File->New->Other
2: Select Android Project
3: Select "Create Project from existing source"
4: Click "Browse and select Material Animations Android Library,
5: Finish
6: Right-click on your project -> Properties
7: In Android->Library section click Add
8: select recently added project -> Ok
9: that's it!

Declarative:-

res/transition/activity_explode.xml

<?xml version="1.0" encoding="utf-8"?>
<transitionSet xmlns:android="http://schemas.android.com/apk/res/android">
    <explode android:duration="2000"/>
</transitionSet>

res/values/style.xml

<item name="android:windowEnterTransition">@transition/activity_explode.xml</item>

To inflate specific xml defined transition:

MainActivity.java

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setupWindowAnimations();
    }

    private void setupWindowAnimations() {
        Explode explode = TransitionInflater.from(this).inflateTransition(R.transition.activity_explode);
        explode.setDuration(2000);
        getWindow().setExitTransition(explode);
    }

Programatically

MainActivity.java

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setupWindowAnimations();
    }

    private void setupWindowAnimations() {
        Explode explode = new Explode();
        explode.setDuration(2000);
        getWindow().setExitTransition(explode);
    }

DetailActivity.java

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setupWindowAnimations();
    }

    private void setupWindowAnimations() {
        Explode explode = new Explode();
        explode.setDuration(2000);
        getWindow().setEnterTransition(explode);
    }

Click Here for more details of implementation:

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