Android系统。 2滚动列表视图在一起 [英] Android. Scrolling 2 listviews together

问题描述

确定。我正在努力实现的布局，做同样的效果在Excel冻结窗格。这就是我想要的水平滚动与主ListView和左手的ListView垂直滚动与主ListView的标题行。标题行和左手列表视图中的其他维度滚动时要保持不动。

OK. What I'm trying to achieve is a layout that does the same effect as frozen panes in Excel. That is I want a header row that scrolls horizontally with the main ListView and a left hand ListView that scrolls vertically with the main ListView. The header row and the left hand listview should remain stationary when scrolling in the other dimension.

下面是XML布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/recordViewLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">
    <LinearLayout android:layout_width="160dp"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <CheckBox
            android:id="@+id/checkBoxTop"
            android:text="Check All"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <ListView android:id="@+id/engNameList"
            android:layout_width="160dp"
            android:layout_height="wrap_content"/>
    </LinearLayout> 


    <HorizontalScrollView  
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <LinearLayout android:id="@+id/scroll"  
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <include layout="@layout/record_view_line" android:id="@+id/titleLine" />

            <ListView 
                android:id="@android:id/list"
                android:layout_height="wrap_content"
                android:layout_width="match_parent"/>

        </LinearLayout>

    </HorizontalScrollView>
</LinearLayout>

然后我使用了这个code在ListActivity

I'm then using this code in the ListActivity

public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
    View v = recordsListView.getChildAt(0);
    int top = (v == null) ? 0 : v.getTop();

((ListView)findViewById(R.id.engNameList)).setSelectionFromTop(firstVisibleItem, top);      
}

此应该引起左手的ListView滚动时右手之一由用户滚动。不幸的是它不

This should cause the left hand ListView to scroll when the right hand one is scrolled by the user. Unfortunately it doesn't.

我已经有点对谷歌和似乎setSelectionFromTop（）函数不会对嵌套在一个以上的布局是一个ListView工作。

I've had a bit of a google about and it seems the setSelectionFromTop() function will not work on a ListView that is nested inside more than one layout.

如果是这样的话任何人都可以提出一个方法，让他们一起滚动，或以不同的方式来设置布局或不同的技术完全。

If this is the case can anyone suggest a way to get them to scroll together or a different way to set up the layout or a different technique altogether.

推荐答案

确定。我现在有一个答案。问题在于.setSelectionFromTop（）只会工作，如果列表视图是在顶部的布局（即没有嵌套）。 Afters有些挠头，我意识到，我可以让我的布局RelativeLayout的，并得到了相同的外观，但无需窝布局复选框和列表视图。这是新的布局：

OK. I have an answer now. The problem being that .setSelectionFromTop() would only work if the listview was in the top layout (ie. not nested). Afters some head scratching I realised that I could make my layout a RelativeLayout and get the same look but without having to nest layouts for the checkbox and listview. This is the new layout:

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/recordViewLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">

        <CheckBox android:id="@+id/checkBoxTop"
            android:text="Check All"
            android:layout_width="160dp"
            android:layout_height="wrap_content"/>"


        <ListView android:id="@+id/engNameList"
            android:layout_width="160dp"
            android:layout_height="wrap_content"
            android:layout_below="@+id/checkBoxTop"/>       





        <HorizontalScrollView  
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@+id/checkBoxTop">

            <LinearLayout android:id="@+id/scroll"  
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <include layout="@layout/record_view_line" android:id="@+id/titleLine" />

                <ListView 
                    android:id="@android:id/list"
                    android:layout_height="wrap_content"
                    android:layout_width="match_parent"/>

            </LinearLayout>

        </HorizontalScrollView>
    </RelativeLayout>

这基本上是code表示去与布局。

This basically is the code that goes with the layout.

在的onCreate（）

In onCreate()

    engListView=getListView();
    engListView.setOnTouchListener(this);


    recordListView=(ListView)findViewById(R.id.recordList);
    recordListView.setOnScrollListener(this);

和侦听器方法：

public boolean onTouch(View arg0, MotionEvent event) {
    recordListView.dispatchTouchEvent(event);

    return false;
}


public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
    View v=view.getChildAt(0);
    if(v != null)
        engListView.setSelectionFromTop(firstVisibleItem, v.getTop());
}

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