ListView中每行颜色不同，如何使他拖曳排序的时候背景颜色也跟着一起交换？

oyymiko 2016-03-09 02:35:55

目前想达成一个效果，app初始时，会呈现这样的画面。

当用户想更改色列顺序时，可以直接拖曳，ex：把选项2的黄色色列拖曳至最底层。
但我的画面却只会改字的顺序，色列不会跟着改变，试问，数据交换那边，应该如何改写？

我的写法是参考谦虚的天下博主的文章改写的。
http://www.cnblogs.com/qianxudetianxia/archive/2011/06/12/2068761.html
改写的部份：

DragListActivity

 @Override

        public View getView(int position, View convertView, ViewGroup parent) {

            View view = convertView;

            if(groupKey.contains(getItem(position)) ){

                //如果是分组标签，就加载分组标签的布局文件，两个布局文件显示效果不同

                view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_tag, null);

            }else{

                pos = position % 10;

                switch (pos)

                {

                    case 1:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_red, null);

                        break;

                    case 2:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_yellow, null);

                        break;

                    case 3:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_green, null);

                        break;

                    case 4:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_blue, null);

                        break;

                    case 5:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_darkblue, null);

                        break;

                    case 6:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_purple, null);

                        break;

                    case 7:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_orange, null);

                        break;

                    case 8:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_midnightblue, null);

                        break;

                    case 9:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_pink, null);

                        break;

                    case 0:

                        view = LayoutInflater.from(getContext()).inflate(R.layout.drag_list_item_white, null);

                        break;

                }

            }

            TextView textView = (TextView)view.findViewById(R.id.drag_list_item_text);

            textView.setText(getItem(position));



            return view;

        }

除了红色列，其他列的layout

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:background="#ffff00">

    <TextView

       android:id="@+id/drag_list_item_text" 

       android:layout_width="wrap_content" 

       android:layout_height="@dimen/drag_item_normal_height"

       android:paddingLeft="5dip"

       android:layout_alignParentLeft="true"

       android:layout_centerVertical="true"

       android:gravity="center_vertical"/>

    <ImageView android:id="@+id/drag_list_item_image"

       android:src="@drawable/list_icon"

        android:layout_width="wrap_content"

       android:layout_height="@dimen/drag_item_normal_height"

        android:layout_alignParentTop="true"

        android:layout_alignParentRight="true"

        android:layout_alignParentEnd="true"

        android:background="#ffffff" />

</RelativeLayout>

DragListView

public void onDrop(int y){



        //为了避免滑动到分割线的时候，返回-1的问题

        int tempPosition = pointToPosition(0, y);

        if(tempPosition != INVALID_POSITION){

            dragPosition = tempPosition;

        }



        //超出边界处理

        if(y < getChildAt(1).getTop()){

            //超出上边界

            dragPosition = 1;

        }else if(y > getChildAt(getChildCount()-1).getBottom()){

            //超出下边界

            dragPosition = getAdapter().getCount()-1;

        }



        //数据交换



        if(dragPosition > 1 && dragPosition < getAdapter().getCount()){

            @SuppressWarnings("unchecked")

            DragListActivity.DragListAdapter adapter = (DragListActivity.DragListAdapter)getAdapter();

            String dragItem = adapter.getItem(dragSrcPosition);

            adapter.remove(dragItem);

            adapter.insert(dragItem, dragPosition);

            

           自己觉得应该要改写在这...............却不知要如何改写

        }



    }