Android开发实现可拖动排序的ListView功能【附源码下载】

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; @Override protected 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() {  @Override  public 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); }}

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; } @Override public int getCount() {  return null == productInfoList ? 0 : productInfoList.size(); } @Override public Object getItem(int position) {  return productInfoList.get(position); } @Override public 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-1     mSelectPosition = 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+1     mSelectPosition = 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-1     mSelectPosition = 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+1     mSelectPosition = mSelectPosition + 1;    }   }   productInfoList.add(to, productInfoBean);  }  notifyDataSetChanged(); } @Override public 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;  }  @Override  public 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;  }  @Override  public 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;  } }}