Android Tutorial => ObjectAnimator

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Fastest Entity Framework Extensions

Example

ObjectAnimator is a subclass of ValueAnimator with the added ability to set the calculated value to the property of a target View.

Just like in the ValueAnimator, there are two ways you can create the ObjectAnimator:

(the example code animates an alpha of a View from 0.4f to 0.2f in 250ms)

From xml (put it in the /res/animator)

<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
                android:duration="250"
                android:propertyName="alpha"
                android:valueFrom="0.4"
                android:valueTo="0.2"
                android:valueType="floatType"/>

ObjectAnimator animator = (ObjectAnimator) AnimatorInflater.loadAnimator(context,
        R.animator.example_animator);
animator.setTarget(exampleView);
// set all the animation-related stuff you want (interpolator etc.)
animator.start();

From code:

ObjectAnimator animator = ObjectAnimator.ofFloat(exampleView, View.ALPHA, 0.4f, 0.2f);
animator.setDuration(250);
// set all the animation-related stuff you want (interpolator etc.)
animator.start();

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