android中的简单animation(四)3D transition

animation_main_screen.xml:

 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/container"
     android:layout_width="match_parent"
     android:layout_height="match_parent">

     <ListView
         android:id="@android:id/list"
         android:persistentDrawingCache="animation|scrolling"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layoutAnimation="@anim/layout_bottom_to_top_slide" />

     <ImageView
         android:id="@+id/picture"
         android:scaleType="fitCenter"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:visibility="gone" />

 </FrameLayout>

layout_bottom_to_top.xml:

 xml version="1.0" encoding="utf-8"?>
 <layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
         android:delay="30%"
         android:animationOrder="reverse"
         android:animation="@anim/slide_right" />

slide_right.xml:

 <?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android"
     android:interpolator="@android:anim/accelerate_interpolator">
     <translate
         android:fromXDelta="-100%p"
         android:toXDelta="0"
         android:duration="@android:integer/config_shortAnimTime" />
 </set>

Transition3d.java:

 package com.example.android.apis.animation;

 import com.example.android.apis.R;

 import android.app.Activity;
 import android.os.Bundle;
 import android.widget.ListView;
 import android.widget.ArrayAdapter;
 import android.widget.AdapterView;
 import android.widget.ImageView;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.animation.Animation;
 import android.view.animation.AccelerateInterpolator;
 import android.view.animation.DecelerateInterpolator;

 public class Transition3d extends Activity implements
         AdapterView.OnItemClickListener, View.OnClickListener {
     private ListView mPhotosList;
     private ViewGroup mContainer;
     private ImageView mImageView;

     // Names of the photos we show in the list
     private static final String[] PHOTOS_NAMES = new String[] {
             "Lyon",
             "Livermore",
             "Tahoe Pier",
             "Lake Tahoe",
             "Grand Canyon",
             "Bodie"
     };

     // Resource identifiers for the photos we want to display
     private static final int[] PHOTOS_RESOURCES = new int[] {
             R.drawable.photo1,
             R.drawable.photo2,
             R.drawable.photo3,
             R.drawable.photo4,
             R.drawable.photo5,
             R.drawable.photo6
     };

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);

         setContentView(R.layout.animations_main_screen);

         mPhotosList = (ListView) findViewById(android.R.id.list);
         mImageView = (ImageView) findViewById(R.id.picture);
         mContainer = (ViewGroup) findViewById(R.id.container);

         // Prepare the ListView
         final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                 android.R.layout.simple_list_item_1, PHOTOS_NAMES);

         mPhotosList.setAdapter(adapter);
         mPhotosList.setOnItemClickListener(this);

         // Prepare the ImageView
         mImageView.setClickable(true);
         mImageView.setFocusable(true);
         mImageView.setOnClickListener(this);

         // Since we are caching large views, we want to keep their cache
         // between each animation
         mContainer.setPersistentDrawingCache(ViewGroup.PERSISTENT_ANIMATION_CACHE);
     }

     /**
      * Setup a new 3D rotation on the container view.
      *
      * @param position the item that was clicked to show a picture, or -1 to show the list
      * @param start the start angle at which the rotation must begin
      * @param end the end angle of the rotation
      */
     private void applyRotation(int position, float start, float end) {
         // Find the center of the container
         final float centerX = mContainer.getWidth() / 2.0f;
         final float centerY = mContainer.getHeight() / 2.0f;

         // Create a new 3D rotation with the supplied parameter
         // The animation listener is used to trigger the next animation
         final Rotate3dAnimation rotation =
                 new Rotate3dAnimation(start, end, centerX, centerY, 310.0f, true);
         rotation.setDuration(500);
         rotation.setFillAfter(true);
         rotation.setInterpolator(new AccelerateInterpolator());
         rotation.setAnimationListener(new DisplayNextView(position));

         mContainer.startAnimation(rotation);
     }

     public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
         // Pre-load the image then start the animation
         mImageView.setImageResource(PHOTOS_RESOURCES[position]);
         applyRotation(position, 0, 90);
     }

     public void onClick(View v) {
         applyRotation(-1, 180, 90);
     }

     /**
      * This class listens for the end of the first half of the animation.
      * It then posts a new action that effectively swaps the views when the container
      * is rotated 90 degrees and thus invisible.
      */
     private final class DisplayNextView implements Animation.AnimationListener {
         private final int mPosition;

         private DisplayNextView(int position) {
             mPosition = position;
         }

         public void onAnimationStart(Animation animation) {
         }

         public void onAnimationEnd(Animation animation) {
             mContainer.post(new SwapViews(mPosition));
         }

         public void onAnimationRepeat(Animation animation) {
         }
     }

     /**
      * This class is responsible for swapping the views and start the second
      * half of the animation.
      */
     private final class SwapViews implements Runnable {
         private final int mPosition;

         public SwapViews(int position) {
             mPosition = position;
         }

         public void run() {
             final float centerX = mContainer.getWidth() / 2.0f;
             final float centerY = mContainer.getHeight() / 2.0f;
             Rotate3dAnimation rotation;

             if (mPosition > -1) {
                 mPhotosList.setVisibility(View.GONE);
                 mImageView.setVisibility(View.VISIBLE);
                 mImageView.requestFocus();

                 rotation = new Rotate3dAnimation(90, 180, centerX, centerY, 310.0f, false);
             } else {
                 mImageView.setVisibility(View.GONE);
                 mPhotosList.setVisibility(View.VISIBLE);
                 mPhotosList.requestFocus();

                 rotation = new Rotate3dAnimation(90, 0, centerX, centerY, 310.0f, false);
             }

             rotation.setDuration(500);
             rotation.setFillAfter(true);
             rotation.setInterpolator(new DecelerateInterpolator());

             mContainer.startAnimation(rotation);
         }
     }

 }

显示效果如下，点击某个选项之后，将会用3D的方式显示图片：