Android Tutorial => Basic AnimatedVectorDrawable

Example

An AnimatedVectorDrawable requires at least 3 components:

A VectorDrawable which will be manipulated
An objectAnimator which defines what property to change and how
The AnimatedVectorDrawable itself which connects the objectAnimator to the VectorDrawable to create the animation

The following creates a triangle that transitions its color from black to red.

The VectorDrawable, filename: triangle_vector_drawable.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="24.0"
    android:viewportHeight="24.0">

    <path
        android:name="triangle"
        android:fillColor="@android:color/black"
        android:pathData="M0,24 l12,-24 l12,24 z"/>

</vector>

The objectAnimator, filename: color_change_animator.xml

<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
    android:propertyName="fillColor"
    android:duration="2000"
    android:repeatCount="infinite"
    android:valueFrom="@android:color/black"
    android:valueTo="@android:color/holo_red_light"/>

The AnimatedVectorDrawable, filename: triangle_animated_vector.xml

<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/triangle_vector_drawable">

    <target
        android:animation="@animator/color_change_animator"
        android:name="triangle"/>

</animated-vector>

Note that the <target> specifies android:name="triangle" which matches the <path> in the VectorDrawable. A VectorDrawable may contain multiple elements and the android:name property is used to define which element is being targeted.

Result:

PDF - Download Android for free

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Android VectorDrawable and AnimatedVectorDrawable Basic AnimatedVectorDrawable

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