push Scale Animation for a view - Android android.view.animation

Android examples for android.view.animation:Scale Animation

  1. HOME
  2. Android
  3. android.view.animation
  4. Scale Animation

Description

push Scale Animation for a view

Demo Code

import android.view.MotionEvent;
import android.view.View;
import android.view.animation.ScaleAnimation;

public class Main{

    /**/*from   w  ww  . j  a  va 2  s. co  m*/
     * ScaleAnimation float value
     */
    private final static float SCALE = 0.80f;
    /**
     * View Scale Animation
     * <p/>
     * Scale value {@link AnimUtils#SCALE}
     *
     * @param targetView
     */
    public static void pushScaleAnimation(View targetView) {
        targetView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                pushScale(v, event.getAction(), SCALE, SCALE);
                return false;
            }
        });
    }
    /**
     * View Scale Animation
     *
     * @param targetView
     * @param scaleX     toScaleX and fromScaleX
     * @param scaleY     toScaleY and fromScaleY
     */
    public static void pushScaleAnimation(View targetView,
            final float scaleX, final float scaleY) {
        targetView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                pushScale(v, event.getAction(), scaleX, scaleY);
                return false;
            }
        });
    }
    /**
     * push View ScaleAnimation
     *
     * @param targetView TargetView
     * @param action     MotionEventAction
     * @param scaleX
     * @param scaleY
     */
    private static void pushScale(View targetView, int action,
            float scaleX, float scaleY) {
        if (action == MotionEvent.ACTION_DOWN) {
            // Touch Down
            ScaleAnimation anim = new ScaleAnimation(1.0f, scaleX, 1.0f,
                    scaleY, targetView.getWidth() / 2,
                    targetView.getHeight() / 2);
            anim.setDuration(DURATION);
            anim.setFillEnabled(true);
            anim.setFillAfter(true);
            targetView.startAnimation(anim);
        } else if (action == MotionEvent.ACTION_CANCEL
                || action == MotionEvent.ACTION_UP) {
            // Touch Up
            ScaleAnimation anim = new ScaleAnimation(scaleX, 1.0f, scaleY,
                    1.0f, targetView.getWidth() / 2,
                    targetView.getHeight() / 2);
            anim.setDuration(DURATION);
            anim.setFillEnabled(true);
            anim.setFillAfter(true);
            targetView.startAnimation(anim);
        }
    }

}

Related Tutorials