可拖动排序的ListView

一、上图

          

二、简述

       1、需要实现的效果是长按右侧可拖动部分布局实现列表项的拖动排序

       2、当点击列表项前面的单选按钮时，在该条目右侧显示删除图标，点击该图标删除当前条目。

三、实现思路

       借助github上的开源代码drag-sort-listview-master加以改造。

四、主要源码展示

       1、Activity代码

       

package com.gengducun.dslvdemo;import java.util.ArrayList;import android.app.Activity;import android.os.Bundle;import android.widget.ListView;import com.mobeta.android.dslv.DragSortListView;public class MainActivity extends Activity {protected static final String TAG = "MainActivity";/**产品信息列表**/private ArrayList<ProductInfoBean> productInfoList;/**产品列表控件**/private DragSortListView mDslvProductList;/**产品信息列表*/private ProductListAdapter mProductListAdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mDslvProductList = (DragSortListView) findViewById(R.id.dslv_product_list);initProductList();mProductListAdapter = new ProductListAdapter(productInfoList, this);mDslvProductList.setAdapter(mProductListAdapter);mDslvProductList.setDropListener(onDrop);mDslvProductList.setChoiceMode(ListView.CHOICE_MODE_SINGLE);}private DragSortListView.DropListener onDrop = new DragSortListView.DropListener() {@Overridepublic void drop(int from, int to) {if (from != to) {ProductInfoBean item = (ProductInfoBean) mProductListAdapter.getItem(from);mProductListAdapter.remove(item);mProductListAdapter.insert(item,from, to);mDslvProductList.moveCheckState(from, to);}}};private void initProductList() {productInfoList = new ArrayList<ProductInfoBean>();ProductInfoBean productInfo1 = new ProductInfoBean("EURUSD1");ProductInfoBean productInfo2 = new ProductInfoBean("EURUSD2");ProductInfoBean productInfo3 = new ProductInfoBean("EURUSD3");ProductInfoBean productInfo4 = new ProductInfoBean("EURUSD4");ProductInfoBean productInfo5 = new ProductInfoBean("EURUSD5");ProductInfoBean productInfo6 = new ProductInfoBean("EURUSD6");ProductInfoBean productInfo7 = new ProductInfoBean("EURUSD7");productInfoList.add(productInfo1);productInfoList.add(productInfo2);productInfoList.add(productInfo3);productInfoList.add(productInfo4);productInfoList.add(productInfo5);productInfoList.add(productInfo6);productInfoList.add(productInfo7);}}

      2、Adapter代码

     

<span style="font-size:14px;">package com.gengducun.dslvdemo;import java.util.ArrayList;import android.content.Context;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.RadioButton;import android.widget.TextView;public class ProductListAdapter extends BaseAdapter {private static final String TAG = "ProductListAdapter1";/**产品信息列表*/private ArrayList<ProductInfoBean> productInfoList;/**上下文*/private Context mContext;/**布局加载器*/private LayoutInflater mInflater;/**布局缓存*/private ViewHolder mHolder;/**本类适配器对象**/private ProductListAdapter mProductListAdapter1;/**选中项位置**/private int mSelectPosition = -1;public ProductListAdapter(ArrayList<ProductInfoBean> productInfoList, Context context) {super();this.productInfoList = productInfoList;this.mContext = context;this.mInflater = LayoutInflater.from(context);this.mProductListAdapter1 = this;}@Overridepublic int getCount() {return null == productInfoList ? 0 : productInfoList.size();}@Overridepublic Object getItem(int position) {return productInfoList.get(position);}@Overridepublic long getItemId(int position) {return position;}public int getmSelectPosition() {return mSelectPosition;}public void setmSelectPosition(int mSelectPosition) {this.mSelectPosition = mSelectPosition;}/** * 删除产品 * @param productInfoBean */public void remove(ProductInfoBean productInfoBean) {synchronized (this) {productInfoList.remove(productInfoBean);}notifyDataSetChanged();}/** * 将产品移动到指定的位置 * @param productInfoBean * @param from 移动之前的位置 * @param to 移动完成之后，该产品所在的位置  */public void insert(ProductInfoBean productInfoBean, int from, int to) {synchronized (this) {Log.i(TAG, "from=" + from + "      to =" + to);if (mSelectPosition != -1) {//有选中项的前提下if ((from < mSelectPosition && to < mSelectPosition) || (from > mSelectPosition && to > mSelectPosition)) {//在选中项之前的位置进行拖拉或者在选中项之后的区域拖拉，不会影响选中项} else if (from < mSelectPosition && to > mSelectPosition) {//将选中项之前的移动到选中项之后的位置,则选中项的索引需要发生变化,应该是选中项的位置-1mSelectPosition = mSelectPosition - 1;} else if (from > mSelectPosition && to < mSelectPosition) {//将选中项之后的项移动到选中项之前的位置，索引也需要变化,应该是选中项的位置+1mSelectPosition = mSelectPosition + 1;} else if ((from == mSelectPosition && from > to) || (from == mSelectPosition && from < to)) {//如果将选中项往选中项前面的方向拖，则选中项的索引也需要变化,应该是拖动到的位置mSelectPosition = to;} else if ((from < mSelectPosition && to == mSelectPosition)) {//将选中项之前的移动到当前选中项的位置,索引需要变化,选中项的索引应该是 选中项的值-1mSelectPosition = mSelectPosition - 1;} else if (from > mSelectPosition && to == mSelectPosition) {//将选中项之后的移动到当前项的位置，索引需要变化，选中项的索引应该是选中项的值+1mSelectPosition = mSelectPosition + 1;}}productInfoList.add(to, productInfoBean);}notifyDataSetChanged();}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {if (null == convertView) {convertView = mInflater.inflate(R.layout.list_item_product_list_1, null);mHolder = new ViewHolder();mHolder.rbSelect = (RadioButton) convertView.findViewById(R.id.rb_select);mHolder.tvPurductName = (TextView) convertView.findViewById(R.id.tv_product_name);mHolder.llDragLayout = (LinearLayout) convertView.findViewById(R.id.drag_handle);mHolder.ivDrag = (ImageView) convertView.findViewById(R.id.iv_drag);mHolder.ivDeleteProduct = (ImageView) convertView.findViewById(R.id.iv_product_delete);convertView.setTag(mHolder);} else {mHolder = (ViewHolder) convertView.getTag();}ProductInfoBean productInfoBean = productInfoList.get(position);if (null != productInfoBean) {//设置单选按钮的选中状态if (mSelectPosition == position) {mHolder.rbSelect.setChecked(true);mHolder.ivDrag.setVisibility(View.GONE);mHolder.ivDeleteProduct.setVisibility(View.VISIBLE);mHolder.ivDeleteProduct.setOnClickListener(new RemoveItemClickListener(mSelectPosition));} else {mHolder.rbSelect.setChecked(false);mHolder.ivDrag.setVisibility(View.VISIBLE);mHolder.ivDeleteProduct.setVisibility(View.GONE);}mHolder.rbSelect.setOnClickListener(new ProductClickListener(position));//设置产品名称if (null != productInfoBean.getProductName() && !("".equals(productInfoBean.getProductName()))) {mHolder.tvPurductName.setText(productInfoBean.getProductName());}}return convertView;}class ViewHolder {RadioButton rbSelect;TextView tvPurductName;LinearLayout llDragLayout;ImageView ivDrag;ImageView ivDeleteProduct;}/** * 单选按钮事件监听 * @author Wilson */class ProductClickListener implements OnClickListener {private int position;public ProductClickListener(int position) {super();this.position = position;}@Overridepublic void onClick(View v) {if (mSelectPosition == position) {mSelectPosition = -1;} else {mSelectPosition = position;}Log.i(TAG, "mSelectPosition=" + mSelectPosition + "   position=" + position);mProductListAdapter1.notifyDataSetChanged();}}/** * 删除当前产品项监听事件 */class RemoveItemClickListener implements OnClickListener {private int position;public RemoveItemClickListener(int position) {super();this.position = position;}@Overridepublic void onClick(View v) {//1、删除集合中的数据productInfoList.remove(position);//2、删除服务器端的数据mProductListAdapter1.notifyDataSetChanged();//mSelectPosition = -1;}}}</span>

四、源码

       下载地址：http://download.csdn.net/detail/xiogjie_67/8687813