Android Open Source - AndroidVideoSamples Resize Animation

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License

The source code is released under:

Apache License

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Java Source Code

/**
   Copyright (c) 2014 Rory Hool//ww w.  ja v a 2s.  c  om
   
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
   
       http://www.apache.org/licenses/LICENSE-2.0
   
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
 **/

package com.roryhool.videoplayback;

import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Transformation;

public class ResizeAnimation extends Animation {

   int mOriginalHeight;
   int mTargetHeight;
   int mOffsetHeight;
   int mAdjacentHeightIncrement;
   View mView;
   View mAdjacentView;
   boolean mDown;

   public ResizeAnimation( View view, int originalHeight, int targetHeight, boolean down ) {
      mView = view;
      mOriginalHeight = originalHeight;
      mTargetHeight = targetHeight;
      mOffsetHeight = targetHeight - originalHeight;
      mDown = down;
   }

   @Override
   protected void applyTransformation( float interpolatedTime, Transformation t ) {
      int newHeight;
      if ( mDown )
         newHeight = (int) ( mOffsetHeight * interpolatedTime );

      else
         newHeight = (int) ( mOffsetHeight * ( 1 - interpolatedTime ) );

      mView.getLayoutParams().height = newHeight + mOriginalHeight;
      mView.requestLayout();

      if ( mAdjacentView != null ) {
         mAdjacentView.getLayoutParams().height = mView.getLayoutParams().height + mAdjacentHeightIncrement;
         mAdjacentView.requestLayout();
      }
   }

   @Override
   public void initialize( int width, int height, int parentWidth, int parentHeight ) {
      super.initialize( width, height, parentWidth, parentHeight );
   }

   @Override
   public boolean willChangeBounds() {
      return true;
   }

   public void setAdjacentView( View adjacentView ) {
      mAdjacentView = adjacentView;
   }

   public void setAdjacentHeightIncrement( int adjacentHeightIncrement ) {
      mAdjacentHeightIncrement = adjacentHeightIncrement;
   }
}

Java Source Code List