UItableView的编辑--删除移动cell

//
//  RootViewController.m
//  UI__TableView的编辑
//
//  Created by dllo on 16/3/17.
//  Copyright © 2016年 dllo. All rights reserved.
//

#import "RootViewController.h"

@interface RootViewController ()
<
    UITableViewDataSource,
    UITableViewDelegate
>

@property (nonatomic, retain) UITableView *tableView;
@property (nonatomic, retain) NSMutableArray *arr;
@end

@implementation RootViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor cyanColor];
    self.navigationController.navigationBar.translucent = NO;
    self.arr = [NSMutableArray arrayWithObjects:@"宋江", @"卢俊义", @"吴用", @"公孙胜", @"关胜", @"林冲", @"秦明" ,@"呼延灼" , @"花荣",@"柴进", @"李应", @"朱仝",@"鲁智深",@"武松", @"徐宁", @"张清", @"杨志", @"董平", @"索超", @"戴宗", @"刘唐", @"李逵", @"史进", @"穆弘", @"雷横", @"李俊",nil];
    self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - 64)];
    [self.view addSubview:self.tableView];
    self.tableView.dataSource = self;
    self.tableView.delegate = self;
    [_tableView release];
    
    // 注册
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:NSStringFromClass([UITableViewCell class])];
    //tableView 的编辑
    //右上角添加一个编辑按钮
    self.navigationItem.rightBarButtonItem = self.editButtonItem;
    //开启编辑模式
    //[self.tableView setEditing:YES animated:YES];
  
    //把tableView往下推200
    self.tableView.contentInset = UIEdgeInsetsMake(200, 0, 0, 0);
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, -200, self.view.frame.size.width, 200)];
    imageView.image = [UIImage imageNamed:@"05.jpg"];
    imageView.tag = 1001;
    //将图片加到tableView的header
    //self.tableView.tableHeaderView = imageView;
    [self.tableView addSubview:imageView];
    [imageView release];
    //打印结构体
    NSLog(@"%@", NSStringFromCGRect(self.view.frame));
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    //scrollView这儿是TableView
    NSLog(@"%@", [scrollView class]);
    // 以后在页面里同时存在tableView和scrollView时. 要事先判断当前那个控件触发的协议方法, 避免因为没有判断造成错误的操作
    //图片下拉变形
    NSLog(@"%f", scrollView.contentOffset.y);
    CGFloat yOffset = self.tableView.contentOffset.y;
    UIImageView *imageView = (UIImageView *)[self.view viewWithTag:1001];
    if (yOffset < 0) {
        imageView.frame = CGRectMake(0, yOffset, self.view.frame.size.width, -yOffset);
    }
}
//重写系统的编辑按钮的点击方法
- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
    [super setEditing:editing animated:animated];
    [self.tableView setEditing:editing animated:animated];
}
#pragma mark -- 设置那些行可以编辑, 通过返回yes和no来判断
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    return YES;
}
#pragma mark -- 设置编辑的 样式, 默认是删除, 还有添加和多选 insert | delete(多选)
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
    return  UITableViewCellEditingStyleDelete;
}
// 状态只有是delete的时候可以左划出现删除
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    NSLog(@"delete");
    // 根据不同的判断实现不同的效果
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        //要实现删除, 第一件事就是删除对应的数组里面的数据
        [self.arr removeObjectAtIndex:indexPath.row];
      //  [self.tableView reloadData];
        [self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationMiddle];
    }
}
//改变红色区域的文字
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath {
    return @"123";
    
}
// 改变划出来的区域的个数和颜色和文字
- (nullable NSArray<UITableViewRowAction *> *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewRowAction *firstAction = [UITableViewRowAction rowActionWithStyle:0 title:@"你猜" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
    }];
    firstAction.backgroundColor = [UIColor yellowColor];
    //第二个rowAction
    UITableViewRowAction *secAction = [UITableViewRowAction rowActionWithStyle:0 title:@"我才不猜" handler:^(UITableViewRowAction * _Nonnull action, NSIndexPath * _Nonnull indexPath) {
        //在block里面, 写对应的点击事件
        NSLog(@"2222");
    }];
    return @[firstAction, secAction];
}
// 移动
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath {
    // 1. 现获取要移动的数据
    NSString *str = [self.arr[sourceIndexPath.row] retain];
    // 2. 把数组里的相应的字符串除掉
    [self.arr removeObjectAtIndex:sourceIndexPath.row];
    // 3. 把新的字符串插入 到数组
    [self.arr insertObject:str atIndex:destinationIndexPath.row];
    [str release];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    
    return self.arr.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
   //注册 新方法
    UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:NSStringFromClass([UITableViewCell class]) forIndexPath:indexPath];
    cell.textLabel.text = self.arr[indexPath.row];
    return  cell;
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
- (void)dealloc {
    [_tableView release];
    [_arr release];
    [super dealloc];
}
/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end

效果图: