/**
* An animation that rotates the view on the Y axis between two specified angles.
* This animation also adds a translation on the Z axis (depth) to improve the effect.
*/
public class Rotate3dAnimation extends Animation {
private final float mFromDegrees;
private final float mToDegrees;
private final float mCenterX;
private final float mCenterY;
private final float mDepthZ;
private final boolean mReverse;
private Camera mCamera;
/**
* Creates a new 3D rotation on the Y axis. The rotation is defined by its
* start angle and its end angle. Both angles are in degrees. The rotation
* is performed around a center point on the 2D space, definied by a pair
* of X and Y coordinates, called centerX and centerY. When the animation
* starts, a translation on the Z axis (depth) is performed. The length
* of the translation can be specified, as well as whether the translation
* should be reversed in time.
*
* @param fromDegrees the start angle of the 3D rotation
* @param toDegrees the end angle of the 3D rotation
* @param centerX the X center of the 3D rotation
* @param centerY the Y center of the 3D rotation
* @param reverse true if the translation should be reversed, false otherwise
*/
public Rotate3dAnimation(float fromDegrees, float toDegrees,
float centerX, float centerY, float depthZ, boolean reverse) {
mFromDegrees = fromDegrees;
mToDegrees = toDegrees;
mCenterX = centerX;
mCenterY = centerY;
mDepthZ = depthZ;
mReverse = reverse;
}
@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
mCamera = new Camera();
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
final float fromDegrees = mFromDegrees;
float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime);
final float centerX = mCenterX;
final float centerY = mCenterY;
final Camera camera = mCamera;
final Matrix matrix = t.getMatrix();
camera.save();
if (mReverse) {
camera.translate(0.0f, 0.0f, mDepthZ * interpolatedTime);
} else {
camera.translate(0.0f, 0.0f, mDepthZ * (1.0f - interpolatedTime));
}
camera.rotateY(degrees);
camera.getMatrix(matrix);
camera.restore();
matrix.preTranslate(-centerX, -centerY);
matrix.postTranslate(centerX, centerY);
}
}
public class Picture {
/**
* 图片名称
*/
private String name;
/**
* 图片对象的资源
*/
private int resource;
public Picture(String name, int resource) {
this.name = name;
this.resource = resource;
}
public String getName() {
return name;
}
public int getResource() {
return resource;
}
}
public class PictureAdapter extends ArrayAdapter<Picture> {
public PictureAdapter(Context context, int textViewResourceId, List<Picture> objects) {
super(context, textViewResourceId, objects);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Picture picture = getItem(position);
View view;
if (convertView == null) {
view = LayoutInflater.from(getContext()).inflate(android.R.layout.simple_list_item_1,
null);
} else {
view = convertView;
}
TextView text1 = (TextView) view.findViewById(android.R.id.text1);
text1.setText(picture.getName());
return view;
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/layout" android:layout_width="match_parent" android:layout_height="match_parent" > <ListView android:id="@+id/pic_list_view" android:layout_width="match_parent" android:layout_height="match_parent" > </ListView> <ImageView android:id="@+id/picture" android:layout_width="match_parent" android:layout_height="match_parent" android:scaleType="fitCenter" android:clickable="true" android:visibility="gone" /> </RelativeLayout>
public class MainActivity extends Activity {
/**
* 根布局
*/
private RelativeLayout layout;
/**
* 用于展示图片列表的ListView
*/
private ListView picListView;
/**
* 用于展示图片详细的ImageView
*/
private ImageView picture;
/**
* 图片列表的适配器
*/
private PictureAdapter adapter;
/**
* 存放所有图片的集合
*/
private List<Picture> picList = new ArrayList<Picture>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
// 对图片列表数据进行初始化操作
initPics();
layout = (RelativeLayout) findViewById(R.id.layout);
picListView = (ListView) findViewById(R.id.pic_list_view);
picture = (ImageView) findViewById(R.id.picture);
adapter = new PictureAdapter(this, 0, picList);
picListView.setAdapter(adapter);
picListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// 当点击某一子项时,将ImageView中的图片设置为相应的资源
picture.setImageResource(picList.get(position).getResource());
// 获取布局的中心点位置,作为旋转的中心点
float centerX = layout.getWidth() / 2f;
float centerY = layout.getHeight() / 2f;
// 构建3D旋转动画对象,旋转角度为0到90度,这使得ListView将会从可见变为不可见
final Rotate3dAnimation rotation = new Rotate3dAnimation(0, 90, centerX, centerY,
310.0f, true);
// 动画持续时间500毫秒
rotation.setDuration(500);
// 动画完成后保持完成的状态
rotation.setFillAfter(true);
rotation.setInterpolator(new AccelerateInterpolator());
// 设置动画的监听器
rotation.setAnimationListener(new TurnToImageView());
layout.startAnimation(rotation);
}
});
picture.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// 获取布局的中心点位置,作为旋转的中心点
float centerX = layout.getWidth() / 2f;
float centerY = layout.getHeight() / 2f;
// 构建3D旋转动画对象,旋转角度为360到270度,这使得ImageView将会从可见变为不可见,并且旋转的方向是相反的
final Rotate3dAnimation rotation = new Rotate3dAnimation(360, 270, centerX,
centerY, 310.0f, true);
// 动画持续时间500毫秒
rotation.setDuration(500);
// 动画完成后保持完成的状态
rotation.setFillAfter(true);
rotation.setInterpolator(new AccelerateInterpolator());
// 设置动画的监听器
rotation.setAnimationListener(new TurnToListView());
layout.startAnimation(rotation);
}
});
}
/**
* 初始化图片列表数据。
*/
private void initPics() {
Picture bird = new Picture("Bird", R.drawable.bird);
picList.add(bird);
Picture winter = new Picture("Winter", R.drawable.winter);
picList.add(winter);
Picture autumn = new Picture("Autumn", R.drawable.autumn);
picList.add(autumn);
Picture greatWall = new Picture("Great Wall", R.drawable.great_wall);
picList.add(greatWall);
Picture waterFall = new Picture("Water Fall", R.drawable.water_fall);
picList.add(waterFall);
}
/**
* 注册在ListView点击动画中的动画监听器,用于完成ListView的后续动画。
*
* @author guolin
*/
class TurnToImageView implements AnimationListener {
@Override
public void onAnimationStart(Animation animation) {
}
/**
* 当ListView的动画完成后,还需要再启动ImageView的动画,让ImageView从不可见变为可见
*/
@Override
public void onAnimationEnd(Animation animation) {
// 获取布局的中心点位置,作为旋转的中心点
float centerX = layout.getWidth() / 2f;
float centerY = layout.getHeight() / 2f;
// 将ListView隐藏
picListView.setVisibility(View.GONE);
// 将ImageView显示
picture.setVisibility(View.VISIBLE);
picture.requestFocus();
// 构建3D旋转动画对象,旋转角度为270到360度,这使得ImageView将会从不可见变为可见
final Rotate3dAnimation rotation = new Rotate3dAnimation(270, 360, centerX, centerY,
310.0f, false);
// 动画持续时间500毫秒
rotation.setDuration(500);
// 动画完成后保持完成的状态
rotation.setFillAfter(true);
rotation.setInterpolator(new AccelerateInterpolator());
layout.startAnimation(rotation);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
}
/**
* 注册在ImageView点击动画中的动画监听器,用于完成ImageView的后续动画。
*
* @author guolin
*/
class TurnToListView implements AnimationListener {
@Override
public void onAnimationStart(Animation animation) {
}
/**
* 当ImageView的动画完成后,还需要再启动ListView的动画,让ListView从不可见变为可见
*/
@Override
public void onAnimationEnd(Animation animation) {
// 获取布局的中心点位置,作为旋转的中心点
float centerX = layout.getWidth() / 2f;
float centerY = layout.getHeight() / 2f;
// 将ImageView隐藏
picture.setVisibility(View.GONE);
// 将ListView显示
picListView.setVisibility(View.VISIBLE);
picListView.requestFocus();
// 构建3D旋转动画对象,旋转角度为90到0度,这使得ListView将会从不可见变为可见,从而回到原点
final Rotate3dAnimation rotation = new Rotate3dAnimation(90, 0, centerX, centerY,
310.0f, false);
// 动画持续时间500毫秒
rotation.setDuration(500);
// 动画完成后保持完成的状态
rotation.setFillAfter(true);
rotation.setInterpolator(new AccelerateInterpolator());
layout.startAnimation(rotation);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
}
}
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