Android Open Source - Android-Apps Animation Manager

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License

The source code is released under:

Apache License

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Java Source Code

package com.kniezrec.xbmcgear.presentation;
// w w  w  .j  a  va  2s .c om
import android.animation.ValueAnimator;
import android.content.Context;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;

import com.kniezrec.xbmcgear.R;
import com.kniezrec.xbmcgear.connection.AndroidApplication;

/**
 * Author Kamil Niezrecki
 */
class AnimationManager implements Animation.AnimationListener, ValueAnimator.AnimatorUpdateListener {
    private View mExpandButton;
    private View mInfoView;
    private final Animation mRotate;
    private final Animation mReverseRotate;
    private View mCard;
    private boolean mExpanded = false;
    private int mVisibility;
    private int heightCollapsed;
    private int heightExpanded;

    public AnimationManager() {
        Context context = AndroidApplication.getInstance().getApplicationContext();
        mRotate = AnimationUtils.loadAnimation(context, R.anim.rotate);
        mReverseRotate = AnimationUtils.loadAnimation(context, R.anim.rotate_back);
        mRotate.setAnimationListener(this);
        mReverseRotate.setAnimationListener(this);
    }

    public void setCardView(View card) {
        this.mCard = card;
        heightCollapsed = mCard.getHeight();
        heightExpanded = (int) Math.floor(heightCollapsed * 2.2);
    }

    public void setButtonView(View button) {
        this.mExpandButton = button;
    }

    public void setLayoutView(View layout) {
        this.mInfoView = layout;
    }

    public void collapseIfNeeded() {
        if (this.mExpanded) {
            mExpanded = false;
            mExpandButton.startAnimation(mReverseRotate);
            resizeAnimate(heightExpanded, heightCollapsed, true);
        }
    }

    public void animate() {
        if (mExpanded) {
            resizeAnimate(heightExpanded, heightCollapsed, true);
            mVisibility = View.GONE;
            mExpandButton.startAnimation(mReverseRotate);
            mExpanded = false;
        } else {
            resizeAnimate(heightCollapsed, heightExpanded, false);
            mVisibility = View.VISIBLE;
            mExpandButton.startAnimation(mRotate);
            mExpanded = true;
        }
    }

    private void resizeAnimate(int height, int targetHeight, boolean isReverse) {
        ValueAnimator mResizeAnimation = ValueAnimator.ofInt(height, targetHeight);
        mResizeAnimation.setDuration(300);
        mResizeAnimation.addUpdateListener(this);
        mResizeAnimation.start();
    }

    @Override
    public void onAnimationStart(Animation animation) {
    }

    @Override
    public void onAnimationEnd(Animation animation) {
        if (mInfoView != null) {
            mInfoView.setVisibility(mVisibility);
        }
    }

    @Override
    public void onAnimationRepeat(Animation animation) {
    }

    @Override
    public void onAnimationUpdate(ValueAnimator animation) {
        Integer value = (Integer) animation.getAnimatedValue();
        mCard.getLayoutParams().height = value;
        mCard.requestLayout();
    }
}

Java Source Code List