collapse a View - Android Animation

Android examples for Animation:Slide Animation

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Description

collapse a View

Demo Code


//package com.java2s;
import android.view.View;

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

public class Main {
    static int ANIMATION_DURATION = 500;

    public static void collapse(final View v) {
        final int initialHeight = v.getMeasuredHeight();

        Animation a = new Animation() {
            @Override//from www .  ja  v  a2s  .  co  m
            protected void applyTransformation(float interpolatedTime,
                    Transformation t) {
                if (interpolatedTime == 1) {
                    v.setVisibility(View.GONE);
                } else {
                    v.getLayoutParams().height = initialHeight
                            - (int) (initialHeight * interpolatedTime);
                    v.requestLayout();
                }
            }

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

        // 1dp/ms
        a.setDuration(ANIMATION_DURATION);
        // a.setDuration((int)(initialHeight / v.getContext().getResources().getDisplayMetrics().density));
        v.startAnimation(a);
    }
}

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