com.manning.androidhacks.hack008.MainActivity.java Source code

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Here is the source code for com.manning.androidhacks.hack008.MainActivity.java

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/*
50AH-code
=========
    
50 Android Hacks (http://manning.com/sessa/) book source code
    
    
Copyright (c) 2012 Manning
    
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
    
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
    
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
    
    
*/

/*******************************************************************************
 * Copyright (c) 2012 Manning
 * See the file license.txt for copying permission.
 ******************************************************************************/
package com.manning.androidhacks.hack008;

import java.util.Random;

import android.app.Activity;
import android.os.Bundle;
import android.view.ViewGroup.LayoutParams;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import com.nineoldandroids.animation.Animator;
import com.nineoldandroids.animation.Animator.AnimatorListener;
import com.nineoldandroids.animation.AnimatorSet;
import com.nineoldandroids.animation.ObjectAnimator;
import com.nineoldandroids.view.animation.AnimatorProxy;

public class MainActivity extends Activity implements AnimatorListener {

    private static final int ANIM_COUNT = 4;
    private static final int[] PHOTOS = new int[] { R.drawable.photo1, R.drawable.photo2, R.drawable.photo3,
            R.drawable.photo4, R.drawable.photo5, R.drawable.photo6 };

    private FrameLayout mContainer;
    private ImageView mView;
    private Random mRandom = new Random();
    private int mIndex = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mContainer = new FrameLayout(this);
        mContainer.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

        mView = createNewView();
        mContainer.addView(mView);

        setContentView(mContainer);
    }

    private ImageView createNewView() {
        ImageView ret = new ImageView(this);
        ret.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
        ret.setScaleType(ScaleType.FIT_XY);
        ret.setImageResource(PHOTOS[mIndex]);
        mIndex = (mIndex + 1 < PHOTOS.length) ? mIndex + 1 : 0;

        return ret;
    }

    @Override
    protected void onResume() {
        super.onResume();
        nextAnimation();
    }

    private void nextAnimation() {
        AnimatorSet anim = new AnimatorSet();
        final int index = mRandom.nextInt(ANIM_COUNT);

        switch (index) {
        case 0:
            anim.playTogether(ObjectAnimator.ofFloat(mView, "scaleX", 1.5f, 1f),
                    ObjectAnimator.ofFloat(mView, "scaleY", 1.5f, 1f));
            break;

        case 1:
            anim.playTogether(ObjectAnimator.ofFloat(mView, "scaleX", 1, 1.5f),
                    ObjectAnimator.ofFloat(mView, "scaleY", 1, 1.5f));
            break;

        case 2:
            AnimatorProxy.wrap(mView).setScaleX(1.5f);
            AnimatorProxy.wrap(mView).setScaleY(1.5f);
            anim.playTogether(ObjectAnimator.ofFloat(mView, "translationY", 80f, 0f));
            break;

        case 3:
        default:
            AnimatorProxy.wrap(mView).setScaleX(1.5f);
            AnimatorProxy.wrap(mView).setScaleY(1.5f);
            anim.playTogether(ObjectAnimator.ofFloat(mView, "translationX", 0f, 40f));
            break;
        }

        anim.setDuration(3000);
        anim.addListener(this);
        anim.start();
    }

    @Override
    public void onAnimationCancel(Animator arg0) {
    }

    @Override
    public void onAnimationEnd(Animator animator) {
        mContainer.removeView(mView);
        mView = createNewView();
        mContainer.addView(mView);
        nextAnimation();
    }

    @Override
    public void onAnimationRepeat(Animator arg0) {
    }

    @Override
    public void onAnimationStart(Animator arg0) {
    }
}