我正在尝试创建一个动画来在两个视图之间转换,这两个视图都是ExpandableListViews。我想要的外观如下图所示。
我尝试使用shrink_to_middle和grow_from_middle作为我的ViewAnimator的out / in动画 - 它接近但不太正确 - 随着动画正在发生,当前缩小/增长,左右边缘都是视图的高度相同,不会为动画提供任何深度。
我不确定如何最好地解释我想要的东西,这就是我绘制图像的原因,但是这里仍然无论如何...我希望对动画进行三维观察,其中视图旋转在z轴。假设我们使用一个简单的shrink_to_middle和grow_from_middle动画作为起点(它不提供三维外观。)为了提供三维外观,当视图缩小到右边时,out动画将使右边缘逐渐变小。中间;随着视图从中间增长,动画中的左边缘会逐渐变大。
图像1到4将是输出动画(对于视图#1),图像5-8将是动画(对于视图#2)
提前致谢。
修改: 仅供参考,这是我目前缩小到中间并从中间动画xml文件增长
shrink_to_middle.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<scale android:interpolator="@android:anim/linear_interpolator"
android:fromXScale="1.0" android:toXScale="0.0" android:fromYScale="1.0"
android:toYScale="1.0" android:fillAfter="false" android:duration="500" />
<translate android:fromXDelta="0" android:toXDelta="50%"
android:duration="500" />
</set>
grow_from_middle.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<scale android:interpolator="@android:anim/linear_interpolator"
android:fromXScale="0.0" android:toXScale="1.0" android:fromYScale="1.0"
android:toYScale="1.0" android:fillAfter="false" android:startOffset="200"
android:duration="500" />
<translate android:fromXDelta="50%" android:toXDelta="0"
android:startOffset="200" android:duration="500" />
</set>
答案 0 :(得分:11)
Rotate3dAnimation就是答案。它位于示例SDK文件夹中。我正在使用0到-90的动画和90到0的动画,它的效果非常好。
答案 1 :(得分:1)
我必须做同样的事情。唯一的区别是我必须轮换MapView
。回答这个问题可能为时已晚,但我认为这可能对其他人有用。使用Rotate3dAnimation如下。
public class EventsActivity extends MapActivity implements DialogInterface.OnDismissListener {
private EventsItemModel eventsItemModel;
private Integer eventItemId;
private Integer eventCategoryId;
private static MapOverlay mapOverlay;
Drawable marker;
Context context;
private static String MY_LOCATION = "My Location";
private ViewGroup mContainer;
private ImageView mImageView;
private MapView mMapView;
private static boolean isFlipped = false;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.event_item_detail);
mContainer = (ViewGroup) findViewById(R.id.event_container);
// Since we are caching large views, we want to keep their cache
// between each animation
mContainer.setPersistentDrawingCache(ViewGroup.PERSISTENT_ANIMATION_CACHE);
mMapView = (MapView) findViewById(R.id.mapview);
mImageView = (ImageView) findViewById(R.id.mapPreview);
mImageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
isFlipped = true;
applyRotation(1, 0, 90);
}
});
try {
eventCategoryId = getIntent().getIntExtra(AppConstants.EVENT_CATEGORY, 0);
eventItemId = getIntent().getIntExtra(AppConstants.EVENT_ID, 0);
}
catch (Exception e) {
e.printStackTrace();
}
}
public void onResume() {
super.onResume();
WeakReference<EventsActivity> weakContext = new WeakReference<EventsActivity>(this);
EventsAsyncTask task = new EventsAsyncTask(weakContext);
task.execute(eventItemId, eventCategoryId);
}
public void onTaskComplete(EventsItemModel eiModel) {
this.eventsItemModel = eiModel;
TextView calTitle = (TextView) findViewById(R.id.news_title);
TextView eventTitle = (TextView) findViewById(R.id.cal_event_title);
TextView calDate = (TextView) findViewById(R.id.cal_date);
TextView calTime = (TextView) findViewById(R.id.cal_time);
TextView calAddress = (TextView) findViewById(R.id.cal_address);
TextView calDescription = (TextView) findViewById(R.id.cal_description);
try {
calTitle.setText(eventsItemModel.getEventsCategory().getTitle());
calTitle.setVisibility(View.VISIBLE);
eventTitle.setText(eventsItemModel.getEventTitle());
calDate.setText(eventsItemModel.getFormattedDateRange());
// TODO:Format start and end time
calTime.setText("Time: " + eventsItemModel.getFormattedStartTime() + " - " + eventsItemModel.getFormattedEndTime());
calAddress.setText(eventsItemModel.getAddress());
calDescription.setText(eventsItemModel.getDescription());
System.out.println("<<<<<<<<< EventsActivity >>>>>>>>> isRead? " + eventsItemModel.getReadUnread());
eventsItemModel.setReadUnread(true);
System.out.println("<<<<<<<<<< EventsActivity >>>>>>>>>> isRead? " + eventsItemModel.getReadUnread());
}
catch (Exception e) {
e.printStackTrace();
}
mMapView.setBuiltInZoomControls(true);
setMapParameters();
createItemizedOverlay();
setLocationMarker(createMarker(R.drawable.location_marker));
showLocationPointOnMap();
}
@Override
public void onDismiss(DialogInterface dialog) {
}
@Override
protected boolean isRouteDisplayed() {
return false;
}
public void createItemizedOverlay() {
mapOverlay = new MapOverlay(this);
}
public void setLocationMarker(Drawable marker) {
mapOverlay.setLocationMarker(marker);
}
public void showLocationPointOnMap() {
GeoPoint geoPoint = new GeoPoint(0, 0);
if (eventsItemModel != null && eventsItemModel.getLatitude() != null && eventsItemModel.getLatitude().length() > 0 && eventsItemModel.getLongitude() != null
&& eventsItemModel.getLongitude().length() > 0) {
try {
geoPoint = new GeoPoint((int) (Double.parseDouble(eventsItemModel.getLatitude()) * 1E6), (int) (Double.parseDouble(eventsItemModel.getLongitude()) * 1E6));
}
catch (NumberFormatException e) {
e.printStackTrace();
}
OverlayItem item = new OverlayItem(geoPoint, MY_LOCATION, null);
mapOverlay.addItem(item);
mMapView.getOverlays().add(mapOverlay);
// move to location
mMapView.getController().animateTo(geoPoint);
// redraw map
mMapView.postInvalidate();
}
}
public void setStreetView(boolean isStreetView) {
mMapView.setStreetView(isStreetView);
}
public void setSatelliteView(boolean isSatelliteView) {
mMapView.setSatellite(isSatelliteView);
}
public void setZoom(int zoomLevel) {
mMapView.getController().setZoom(zoomLevel);
}
private void setMapParameters() {
// setStreetView(true);
// setSatelliteView(false);
setZoom(17);
}
private Drawable createMarker(int iconID) {
// Initialize icon
Drawable icon = getResources().getDrawable(iconID);
icon.setBounds(0, 0, icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
return icon;
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
}
/**
* 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);
}
/**
* 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) {
// Do nothing!!
}
}
/**
* 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) {
mImageView.setVisibility(View.GONE);
mMapView.setVisibility(View.VISIBLE);
mMapView.requestFocus();
rotation = new Rotate3dAnimation(-90, 180, centerX, centerY, 310.0f, false);
rotation.reset();
}
else {
mMapView.setVisibility(View.GONE);
mImageView.setVisibility(View.VISIBLE);
mImageView.requestFocus();
rotation = new Rotate3dAnimation(90, 0, centerX, centerY, 310.0f, false);
}
rotation.setDuration(100);
rotation.setFillAfter(true);
rotation.setInterpolator(new DecelerateInterpolator());
mContainer.startAnimation(rotation);
}
}
@Override
public void onBackPressed() {
if (isFlipped) {
applyRotation(-1, 0, -90);
isFlipped = false;
}
else {
super.onBackPressed();
}
}
}
我的xml布局如下:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/event_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#426773" >
<include
android:id="@+id/news_header"
layout="@layout/news_header" />
<TextView
android:id="@+id/cal_event_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@id/news_header"
android:padding="5dp"
android:textColor="@android:color/white"
android:textSize="22sp"
android:textStyle="bold"
android:typeface="sans" />
<RelativeLayout
android:id="@+id/date_time_container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@id/cal_event_title">
<TextView
android:id="@+id/cal_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:padding="5dp"
android:textColor="@android:color/white" />
<TextView
android:id="@+id/cal_time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@id/cal_date"
android:padding="5dp"
android:textColor="@android:color/white" />
</RelativeLayout>
<ImageView
android:id="@+id/mapPreview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/cal_event_title"
android:layout_alignParentRight="true"
android:paddingRight="5dp"
android:clickable="true"
android:src="@drawable/ic_event_map"
android:onClick="showMap"
android:background="@drawable/textview_border"
android:layout_marginRight="5dp"/>
<TextView
android:id="@+id/cal_address"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@id/date_time_container"
android:padding="5dp"
android:textColor="@android:color/white"
android:textSize="16sp"
android:textStyle="bold"
android:typeface="sans" />
<ScrollView
android:id="@+id/scroll_description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/cal_address"
android:padding="5dp"
android:scrollbars="vertical" >
<RelativeLayout
android:id="@+id/map_container"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/cal_description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@android:color/white"/>
</RelativeLayout>
</ScrollView>
<com.google.android.maps.MapView
android:id="@+id/mapview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:apiKey="your_google_api_key"
android:clickable="true"
android:visibility="gone" />
</RelativeLayout>
答案 2 :(得分:0)
有关3D旋转动画的示例,您可以在FlipAnimationExample中看到。但是如果你的观点很重,你不应该使用这个动画,因为它让旋转不顺畅,正如我所见。
要获得更多动画,您可以在我的“Android UI Patterns”应用中轻松找到Home&gt;动画&amp;效果。