andorid popupwindow 更新时动画的实现，可实现一个窗口被一个窗口推上去的效果

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最近由于项目需要，一直在寻找一个弹出窗口，在另一个弹出窗口弹出时，推上去的效果，居然找不到，经过不懈的努力，终于实现了popupwindow在更新时的动画。

先上代码：

import android.animation.ObjectAnimator;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.PopupWindow;
import android.widget.TextView; public class NotePopWindow extends PopupWindow {
private TextView mNodeTextView;
private Context mContext;
private ViewWrapper mWrapper; public NotePopWindow(Context context, int width, int height) {
super(LayoutInflater.from(context).inflate(R.layout.fullscreen_view_note_popwindow, null), width, height);
mContext = context;
setBackgroundDrawable(new BitmapDrawable());
setAnimationStyle(R.style.anim_note_bottombar);
initViews();
} public NotePopWindow(Context context) {
super(context); } public NotePopWindow(Context context, AttributeSet attributeSet) {
super(context, attributeSet);
} private void initViews() {
mNodeTextView = (TextView) getContentView().findViewById(R.id.note_view);
mWrapper = new ViewWrapper(getContentView());
} @SuppressLint("NewApi")
public void startUpAnimation() {
ObjectAnimator translationRight = ObjectAnimator.ofInt(mWrapper, "Y", (int) mContext.getResources()
.getDimension(R.dimen.bottom_menu_window_height));
translationRight.setDuration(540);
translationRight.start();
} @SuppressLint("NewApi")
public void startDownAnimation() {
ObjectAnimator translationRight = ObjectAnimator.ofInt(mWrapper, "Y", 0);
translationRight.setDuration(360);
translationRight.start();
} private class ViewWrapper {
private View mTarget;
private boolean isUp = true; public ViewWrapper(View target) {
setmTarget(target);
} @SuppressWarnings("unused")
public int getY() {
if (isUp) {
isUp = false;
return 0; } else {
isUp = true;
return (int) mContext.getResources().getDimension(R.dimen.bottom_menu_window_height);
} } @SuppressWarnings("unused")
public void setY(int height) {
update(0, height, -1, -1);
} @SuppressWarnings("unused")
public View getmTarget() {
return mTarget;
} public void setmTarget(View mTarget) {
this.mTarget = mTarget;
}
}
}