PopupWindow分享页面

主页面：
<Button
    android:id="@+id/share"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="分享"
    android:onClick="share"/>
    
分享页面：
<TextView
    android:id="@+id/textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:text="share"
    android:textSize="30sp" />    

//in.xml
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:duration = "1000"
        android:fromYDelta="100%"
        android:toYDelta="0"></translate>
</set>

//out.xml
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:duration = "1000"
        android:fromYDelta="0"
        android:toYDelta="100%"></translate>
</set>

//styles.xml
<style name="my_popupWindow_style">
    <item name="android:windowEnterAnimation">@animator/in</item>
    <item name="android:windowExitAnimation">@animator/out</item>
</style>

public void share(View view) {
    View shareView = LayoutInflater.from(this).inflate(R.layout.popupwindow_share, null);
    PopupWindow popupWindow = new PopupWindow(shareView, LinearLayout.LayoutParams.MATCH_PARENT,200);
    popupWindow.setOutsideTouchable(true);
    popupWindow.setFocusable(true);
    popupWindow.setBackgroundDrawable(new BitmapDrawable());
    popupWindow.setAnimationStyle(R.style.my_popupWindow_style);
    popupWindow.showAtLocation(view, Gravity.BOTTOM,0,0);
}