Android Open Source - DragHelperView Header View Minimize Animation

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Back to project page DragHelperView.

License

The source code is released under:

Apache License

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Java Source Code

package so.library.draghelper.helper.animation;
/*from   www.  ja  va2 s .c o m*/
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Transformation;

/**
 * Created by risedrag on 15. 1. 16..
 */
public class HeaderViewMinimizeAnimation extends Animation {
  final int startWidth;
  final int targetWidth;
  final float targetTranslationX;
  final float targetTranslationY;

  View view;


  public HeaderViewMinimizeAnimation(View view, int targetWidth, float targetTranslationX, float targetTranslationY) {
    this.view = view;
    this.targetWidth = targetWidth;
    this.targetTranslationX = targetTranslationX;
    this.targetTranslationY = targetTranslationY;

    startWidth = view.getWidth();
  }

  @Override
  protected void applyTransformation(float interpolatedTime, Transformation t) {
    int newWidth = (int) (startWidth + (targetWidth - startWidth) * interpolatedTime);

    view.setTranslationX(targetTranslationX * interpolatedTime);
    view.setTranslationY(targetTranslationY * interpolatedTime);
    view.getLayoutParams().width = newWidth;
    view.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;
  }
}

Java Source Code List