Example usage for android.animation FloatEvaluator FloatEvaluator

Introduction

In this page you can find the example usage for android.animation FloatEvaluator FloatEvaluator.

Prototype

FloatEvaluator

Source Link

Usage

From source file:com.pdftron.pdf.utils.ViewerUtils.java

/**
 * Creates an Animator object that varies the alpha property of the view. The
 * interpolation used is linear.//from   www .j  a  v a 2s  . c o  m
 *
 * @param view the view to be animated
 * @param listener the listener to be used by this Animator
 *
 * @return a new Animator object that will change the "alpha" property
 * of the view.
 */
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static Animator createAlphaAnimator(View view, Animator.AnimatorListener listener) {
    if (view == null) {
        return null;
    }
    // We animate only the opacity of the view.
    ValueAnimator fader = ObjectAnimator.ofFloat(view, "alpha", 0.0f, 1.0f, 0.4f, 1.0f, 0.0f);
    fader.setDuration(1500);
    fader.setEvaluator(new FloatEvaluator());
    if (listener != null) {
        fader.addListener(listener);
    }
    return fader;
}

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