iOS UITableView 拖动排序实现代码

 // ViewController.m
// JRTableView删除
//
// Created by jerehedu on 15/6/11.
// Copyright (c) 2015年 jerehedu. All rights reserved.
//

#import "ViewController.h"
#import "Goods.h"

@interface ViewController ()<UITableViewDataSource, UITableViewDelegate>

{
  UITableView *_tableView; //列表

  NSMutableArray *_goodsAry; //商品数组

  UIButton *_editBtn; //编辑按钮
}
@end

@implementation ViewController

- (void)viewDidLoad {
  [super viewDidLoad];

  //添加标题
  UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, 44)];
  titleLabel.text = @"购物车";
  titleLabel.textAlignment = NSTextAlignmentCenter;
  titleLabel.backgroundColor = [UIColor redColor];
  titleLabel.textColor = [UIColor whiteColor];
  [self.view addSubview:titleLabel];

  //添加编辑按钮
  _editBtn = [UIButton buttonWithType:UIButtonTypeCustom];
  _editBtn.frame = CGRectMake(self.view.frame.size.width-60, 25, 50, 34);
  [_editBtn setTitle:@"编辑" forState:UIControlStateNormal];
  [_editBtn setTitle:@"完成" forState:UIControlStateSelected];
  _editBtn.titleLabel.font = [UIFont systemFontOfSize:15];
  _editBtn.backgroundColor = [UIColor colorWithRed:0.8 green:0.8 blue:0.8 alpha:0.5];
  [self.view addSubview:_editBtn];
  [_editBtn addTarget:self action:@selector(clickEditBtn:) forControlEvents:UIControlEventTouchUpInside];

  //添加tableview
  _tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 64, self.view.frame.size.width, self.view.frame.size.height-64)];
  _tableView.dataSource = self;
  _tableView.delegate = self;
  [self.view addSubview:_tableView];

  //取数据
  NSArray *ary = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"ShoppingGoodsList" ofType:@"plist"]];

  //把数据存到模型对象中，然后把对象存到数组中
  _goodsAry = [NSMutableArray array];
  for (int i=0; i<ary.count; i++) {
    Goods *good = [Goods goodsWithDic:ary[i]];
    [_goodsAry addObject:good];
  }
}

#pragma mark 数据源 返回有几行
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  return _goodsAry.count;
}

#pragma mark 每行显示内容
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  static NSString *idGood = @"goods";

  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:idGood];

  if (cell==nil) {
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:idGood];
  }

  Goods *good = _goodsAry[indexPath.row];

  cell.imageView.image = [UIImage imageNamed:good.icon];
  cell.textLabel.text = good.name;
  cell.detailTextLabel.text = good.details;
  cell.detailTextLabel.numberOfLines = 6;
  cell.detailTextLabel.textColor = [UIColor brownColor];

  return cell;
}

#pragma mark 选中行
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
  // 取消选中状态
  [tableView deselectRowAtIndexPath:indexPath animated:YES];
}

#pragma mark 设置行高
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
  return 110;
}

#pragma mark 点击编辑按钮
- (IBAction)clickEditBtn:(UIButton *)sender {

  //设置tableview编辑状态
  BOOL flag = !_tableView.editing;
  [_tableView setEditing:flag animated:YES];
  _editBtn.selected = flag;
}

#pragma mark 选择编辑模式，添加模式很少用,默认是删除
-(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
  return UITableViewCellEditingStyleNone;
}

#pragma mark 排序 当移动了某一行时候会调用
//编辑状态下，只要实现这个方法，就能实现拖动排序
-(void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
  // 取出要拖动的模型数据
  Goods *goods = _goodsAry[sourceIndexPath.row];
  //删除之前行的数据
  [_goodsAry removeObject:goods];
  // 插入数据到新的位置
  [_goodsAry insertObject:goods atIndex:destinationIndexPath.row];
}

@end