首先，您没有使用Animator，而是ViewPropertyAnimator，它略有不同，您正在尝试为视图翻译设置动画。查看翻译定义，很明显它在布局后得到应用，所以我假设其他视图/视图组不参与并且不关心该属性值。
我相信，您需要为margin视图设置动画或其他位置，以使 ViewGroup 了解配置更改。我认为它可以通过Property Animation来实现，但需要更多的编码。
这是一些简单的例子。说通过向上/向下滑动添加/删除按钮应该从以下布局动画：
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="match_parent"
android:layout_height="@dimen/button_height"
android:layout_alignParentTop="true"
android:id="@+id/btn1"
android:layout_weight="1"
android:text="Button 1"
android:onClick="buttonClickListener" />
<Button
android:layout_width="match_parent"
android:layout_height="@dimen/button_height"
android:layout_below="@id/btn1"
android:id="@+id/btn2"
android:layout_weight="1"
android:text="Button 2: Remove button 1"
android:onClick="buttonClickListener" />
<Button
android:layout_width="match_parent"
android:layout_height="@dimen/button_height"
android:layout_below="@id/btn2"
android:id="@+id/btn3"
android:layout_weight="1"
android:text="Button 3: Remove button 2"
android:onClick="buttonClickListener" />
<Button
android:layout_width="match_parent"
android:layout_height="@dimen/button_height"
android:layout_below="@id/btn3"
android:id="@+id/btn4"
android:layout_weight="1"
android:text="Button 4: add removed button"
android:onClick="buttonClickListener" />
</RelativeLayout>
然后活动可能如下所示：
public class MyActivity extends Activity implements Animator.AnimatorListener {
private static final String TAG = "MyActivity";
/** Queue to manage removed buttons */
private LinkedBlockingDeque<Integer> mRemovedButtonDeque = new LinkedBlockingDeque<Integer>();
/** Distance view should be moved up and down, from resources */
private int mMovingDistance = 0;
/** Animators to be used */
private ObjectAnimator mMarginAnimator;
/** Duration of all animations */
private static final int ANIMATION_DURATION = 1000;
/** Id of currently adding view */
private int mAddingId = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Show the layout with the test view
setContentView(R.layout.main);
mMovingDistance = getResources().getDimensionPixelSize(R.dimen.button_height);
mMarginAnimator = new ObjectAnimator().setDuration(ANIMATION_DURATION);
mMarginAnimator.setInterpolator(new DecelerateInterpolator());
mMarginAnimator.addListener(this);
}
@Override
public void onAnimationStart(final Animator animation) {
// nothing to do here
}
@Override
public void onAnimationEnd(final Animator animation) {
if (mAddingId == 0) {
final Integer removingViewId = mRemovedButtonDeque.peek();
if (removingViewId != null) {
findViewById(removingViewId).setVisibility(View.GONE);
}
}
}
@Override
public void onAnimationCancel(final Animator animation) {
// nothing to do here
}
@Override
public void onAnimationRepeat(final Animator animation) {
// nothing to do here
}
/**
* Listener for buttons click
*
* @param clickedButton {@link View}
*/
public void buttonClickListener(final View clickedButton) {
final int buttonId = clickedButton.getId();
MarginAnimatorHelper animator = null;
switch (buttonId) {
case R.id.btn1:
// nothing to do here
break;
case R.id.btn2:
animator = new MarginAnimatorHelper((Button) findViewById(R.id.btn1));
mRemovedButtonDeque.add(R.id.btn1);
mMarginAnimator.setIntValues(0, -mMovingDistance);
break;
case R.id.btn3:
if (findViewById(R.id.btn1).getVisibility() != View.VISIBLE) {
animator = new MarginAnimatorHelper((Button) findViewById(R.id.btn2));
mRemovedButtonDeque.add(R.id.btn2);
mMarginAnimator.setIntValues(0, -mMovingDistance);
}
break;
case R.id.btn4:
final Integer removedId = mRemovedButtonDeque.pollLast();
if (removedId != null) {
final Button removedButton = (Button) findViewById(removedId);
animator = new MarginAnimatorHelper(removedButton);
removedButton.setVisibility(View.VISIBLE);
mMarginAnimator.setIntValues(-mMovingDistance, 0);
}
break;
}
if (animator != null) {
mMarginAnimator.setTarget(animator);
mMarginAnimator.setPropertyName(MarginAnimatorHelper.PROPERTY_NAME);
mMarginAnimator.start();
}
}
/**
* This view will manages view removing
* and act as {@link ObjectAnimator} target
*/
private static class MarginAnimatorHelper {
/** Name of the property to be animated */
private static final String PROPERTY_NAME = "topMargin";
/** Button to be animated */
private final Button mButton;
/**
* Default constructor
*
* @param button {@link Button} to be animated
*/
public MarginAnimatorHelper(final Button button) {
mButton = button;
}
/**
* Setter for property 'topMargin'
*
* @param margin new value of the property
*/
public void setTopMargin(final int margin) {
final ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) mButton.getLayoutParams();
params.topMargin = margin;
mButton.setLayoutParams(params);
}
}
}
有一个内部类MarginAnimatorHelper完成所有主要工作：更改影响其他布局元素的真实视图布局参数。