滑动listview隐藏和显示顶部布局

需求：

1.listview向下滑动时，隐藏顶部布局

2.listview向上滑动到最上面，显示顶部布局

3.顶部布局的隐藏和显示有过渡效果

4.第一次加载listview时，顶部不要隐藏

布局：

注意：android:animateLayoutChanges="true"添加在需要隐藏显示布局的父布局中才能有过渡效果

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/personal_card_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:animateLayoutChanges="true" 
    android:descendantFocusability="blocksDescendants"
    tools:context="com.xuehu365.xuehu.ui.activity.PersonalCardActivity">

    <include
        android:id="@+id/title"
        layout="@layout/mine_title_layout" />

    <LinearLayout
        android:id="@+id/personal_card_information"
        android:layout_width="match_parent"
        android:layout_height="180dp"
        android:layout_below="@id/title"
        android:gravity="center_horizontal"
        android:orientation="vertical">

        <com.xuehu365.xuehu.ui.widget.CircleImageView
            android:id="@+id/personal_card_image"
            android:layout_width="78dp"
            android:layout_height="78dp"
            android:layout_marginTop="23dp"
            android:src="@mipmap/bg_touxiang" />

        <TextView
            android:id="@+id/personal_card_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="9dp"
            android:textColor="@color/my_font"
            android:textSize="16sp" />

        <TextView
            android:id="@+id/personal_card_company"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:textColor="@color/my_gray_font"
            android:textSize="14sp" />

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="23dp"
            android:layout_marginTop="5dp"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/personal_card_department"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="@color/my_gray_font"
                android:textSize="14sp" />

            <TextView
                android:id="@+id/personal_card_between"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="-"
                android:textColor="@color/my_gray_font"
                android:textSize="14sp"
                android:visibility="gone" />

            <TextView
                android:id="@+id/personal_card_duty"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textColor="@color/my_gray_font"
                android:textSize="14sp" />

        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:id="@+id/personal_card_tabs"
        android:layout_width="match_parent"
        android:layout_height="43dp"
        android:layout_below="@id/personal_card_information"
        android:background="@color/white"
        android:orientation="horizontal">

        <RelativeLayout
            android:id="@+id/personal_share_layout"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:orientation="vertical">

            <TextView
                android:id="@+id/personal_share"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="center"
                android:text="看过的直播"
                android:textColor="@color/my_gray_font"
                android:textSize="18sp" />

            <View
                android:id="@+id/personal_share_line"
                android:layout_width="match_parent"
                android:layout_height="3dp"
                android:layout_alignParentBottom="true"
                android:background="@color/my_blue" />
        </RelativeLayout>


        <RelativeLayout
            android:id="@+id/personal_community_layout"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:orientation="vertical">

            <TextView
                android:id="@+id/personal_community"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="center"
                android:text="加入的社群"
                android:textColor="@color/my_gray_font"
                android:textSize="18sp" />

            <View
                android:id="@+id/personal_community_line"
                android:layout_width="match_parent"
                android:layout_height="3dp"
                android:layout_alignParentBottom="true"
                android:background="@color/white" />
        </RelativeLayout>
    </LinearLayout>

    <android.support.v4.view.ViewPager
        android:id="@+id/personal_card_vp"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/personal_card_tabs"
        android:descendantFocusability="blocksDescendants"></android.support.v4.view.ViewPager>
</RelativeLayout>

代码

private int oldIndex;
private int newIndex;
private boolean isFirstScroll;


//列表滑动监听隐藏信息布局
personal_card_lv.setOnScrollListener(new AbsListView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {
        switch (scrollState) {
            case SCROLL_STATE_TOUCH_SCROLL:
                oldIndex = view.getLastVisiblePosition();
                break;
        }
    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        newIndex = view.getLastVisiblePosition();
        LogHelp.i("scroll", "newIndex:" + newIndex + "--oldIndex:" + oldIndex);
        //往下滑
        if (newIndex > oldIndex && firstVisibleItem > 0) {
            isFirstScroll = true;
            ((PersonalCardActivity) getActivity()).personal_card_information.setVisibility(View.GONE);
        } else if (firstVisibleItem == 0 && isFirstScroll == true) {
            //往上滑
            ((PersonalCardActivity) getActivity()).personal_card_information.setVisibility(View.VISIBLE);
        }
    }
});