Android Open Source - ls-vertretungsplan Animations

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*  Vertretungsplan - Android-App fr Vertretungsplne von Schulen
    Copyright (C) 2014  Johan v. Forstner
//  w  ww  .j  a v a  2 s.  c  om
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see [http://www.gnu.org/licenses/]. */

package com.johan.vertretungsplan.utils;

import android.view.View;

import com.nineoldandroids.animation.Animator;
import com.nineoldandroids.animation.AnimatorListenerAdapter;
import com.nineoldandroids.view.ViewHelper;
import com.nineoldandroids.view.ViewPropertyAnimator;

public class Animations {
    public static void crossfade(final View fromView, View toView) {

      // Set the content view to 0% opacity but visible, so that it is visible
      // (but fully transparent) during the animation.
    ViewHelper.setAlpha(toView,0f);
      toView.setVisibility(View.VISIBLE);

      // Animate the content view to 100% opacity, and clear any animation
      // listener set on the view.
      ViewPropertyAnimator.animate(toView)
              .alpha(1f)
              .setDuration(200)
              .setListener(null);

      // Animate the loading view to 0% opacity. After the animation ends,
      // set its visibility to GONE as an optimization step (it won't
      // participate in layout passes, etc.)
      ViewPropertyAnimator.animate(fromView)
              .alpha(0f)
              .setDuration(200)
          .setListener(new AnimatorListenerAdapter() {
                  @Override
                  public void onAnimationEnd(Animator animation) {
                    fromView.setVisibility(View.GONE);
                  }
              });
  }
}

Java Source Code List