UI10_tableview的编辑

////  MainViewController.m//  UI10_tableview的编辑////  Created by dllo on 15/8/11.//  Copyright (c) 2015年 Clare. All rights reserved.//#import "MainViewController.h"@interface MainViewController ()<UITableViewDataSource,UITableViewDelegate>@property(nonatomic, retain)UITableView *tableView;@property(nonatomic, retain)NSMutableArray *arr;@end@implementation MainViewController- (void)dealloc{    [_tableView release];    [_arr release];    [super dealloc];}- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        self.arr = [NSMutableArray arrayWithObjects:@"宋江", @"卢俊义", @"吴用", @"公孙胜", @"关胜", @"林冲", @"秦明" ,@"呼延灼" , @"花容",@"柴进", @"李应", @"朱仝",@"鲁智深",@"武松",nil];    }    return self;}- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view.    self.navigationController.navigationBar.translucent = NO;    self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - 64) style:UITableViewStylePlain];    [self.view addSubview:self.tableView];    [_tableView release];    self.tableView.delegate = self;    self.tableView.dataSource = self;        // editButtonItem系统自带的编辑按钮    self.navigationItem.rightBarButtonItem = self.editButtonItem;        // 直接打开tableview的可编辑模式//    [self.tableView setEditing:YES animated:YES];}#pragma mark 重写系统的编辑按钮点击触发的方法- (void)setEditing:(BOOL)editing animated:(BOOL)animated{    [super setEditing:editing animated:animated];    [self.tableView setEditing:editing animated:YES];}#pragma mark 设置哪些行可以进行编辑- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath{    // 奇数行可以编辑,偶数行不能编辑//    if (indexPath.row % 2 == 1) {//        return YES;//    } else {//    return NO;//    }    // 默认是YES    return YES;}// 有两种样式,一个是插入,一个是删除- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{    return UITableViewCellEditingStyleDelete;}// 删除数据,提供了一个左划可以编辑的效果- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{    if (editingStyle == UITableViewCellEditingStyleDelete) {        // 先删除数据源        [self.arr removeObjectAtIndex:indexPath.row];//        [self.tableView reloadData];                // 通过tableview来删除上面的cell        // 第一个参数:指定删除哪一个分区的哪个行,把他作为一个元素放在数组中        // 第二个参数:删除动画        [self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationLeft];            }}// 修改删除按钮的标题- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath{    return @"点击一下";}#pragma mark 这个方法是iOS8.0之后出现的方法,可以在编辑状态的时候有多个按钮- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath{    UITableViewRowAction *deleteAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"删除" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {        // 按钮的点击所要触发的事件,都是写在block中        NSLog(@"触发了删除按钮");    }];    UITableViewRowAction *topAction = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDestructive title:@"置顶" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {        NSLog(@"置顶");    }];    deleteAction.backgroundColor = [UIColor lightGrayColor];    topAction.backgroundColor = [UIColor orangeColor];    return @[deleteAction, topAction];}// 移动- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath{    // 1.先获取到起始位置的数据,retain为了防止引用计算变为1时直接执行delloac方法    NSString *str = [self.arr[sourceIndexPath.row] retain];        // 2.把起始位置的对象从数据源中移除    [self.arr removeObjectAtIndex:sourceIndexPath.row];        // 3.把数据插入到数组的目的地位置上    [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{    static NSString *reuse = @"reuse";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuse];    if (!cell) {        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuse]autorelease];    }    cell.textLabel.text = self.arr[indexPath.row];    return cell;}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}/*#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