添加页脚到Android TouchListView [英] Add footer to Android TouchListView

问题描述

我使用从这里TouchListView控制： https://github.com/commonsguy/cwac -touchlist
我已经添加了一些按钮添加到列表中的页脚：

Hi I'm using the TouchListView control from here: https://github.com/commonsguy/cwac-touchlist and I've added some buttons to add to the list in the footer:

    mFooter = getLayoutInflater().inflate(R.layout.edit_homepage_footer_layout, null);
    mListView = (TouchListView) findViewById(R.id.sectionList);
    mListView.addFooterView(mFooter);

这一切似乎是工作的罚款，直到我在列表中拖动项目，此时页脚崩溃（一个列表项我想的高度）遮蔽我已经添加的按钮。

It all seems to be working fine until I drag an item in the list, at which point the footer collapses (to the height of one list item I think) obscuring the buttons I have added.

任何人都可以提出此修复程序/解决方法吗？

Can anyone suggest a fix/workaround for this?

推荐答案

其实，我要求它出来后不久，这个工作（通常的方式... ...）

I actually worked this out shortly after asking it (always the way...)

问题是在是在列表中包括页脚修改每个项目的doExpansion（）和unExpandViews（）方法。要解决它，我创建了一个方法来检查我们是否正在处理一个拖动项目或页脚：

The issue is in the doExpansion() and unExpandViews() methods which were modifying every item in the list including the footer. To fix it I created a method to check whether we are dealing with a draggable item or the footer:

private boolean isDraggableItem(View view) {
    View dragger = view.findViewById(grabberId);
    return dragger != null;
}

和然后改性提到的方法如下：

And then modified the methods mentioned as follows:

private void unExpandViews(boolean deletion) {
    for (int i = 0; ; i++) {
        View v = getChildAt(i);
        if (v == null) {
            if (deletion) {
                // HACK force update of mItemCount
                int position = getFirstVisiblePosition();
                int y = getChildAt(0).getTop();
                setAdapter(getAdapter());
                setSelectionFromTop(position, y);
                // end hack
            }
            layoutChildren(); // force children to be recreated where needed
            v = getChildAt(i);
            if (v == null) {
                break;
            }
        }
        if (isDraggableItem(v)) { //check this view isn't the footer
            ViewGroup.LayoutParams params = v.getLayoutParams();
            params.height = mItemHeightNormal;
            v.setLayoutParams(params);
            v.setVisibility(View.VISIBLE);
        }
    }
}

private void doExpansion() {
    Log.d(logTag, "Doing expansion");
    int childnum = mDragPos - getFirstVisiblePosition();
    if (mDragPos > mFirstDragPos) {
        childnum++;
    }

    View first = getChildAt(mFirstDragPos - getFirstVisiblePosition());

    for (int i = 0; ; i++) {
        View vv = getChildAt(i);
        if (vv == null) {
            break;
        }
        int height = mItemHeightNormal;
        int visibility = View.VISIBLE;
        if (vv.equals(first)) {
            // processing the item that is being dragged
            if (mDragPos == mFirstDragPos) {
                // hovering over the original location
                visibility = View.INVISIBLE;
            } else {
                // not hovering over it
                height = 1;
            }
        } else if (i == childnum) {
            if (mDragPos < getCount() - 1) {
                height = mItemHeightExpanded;
            }
        }
        if (isDraggableItem(vv)) { //check this view isn't the footer
            ViewGroup.LayoutParams params = vv.getLayoutParams();
            params.height = height;
            vv.setLayoutParams(params);
            vv.setVisibility(visibility);
        }
    }
}

将是值得更新GitHub的项目包括此我想。

Would be worth updating the github project to include this I think.

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