UITabelViewEdit

#import "RootViewController.h"#import "Cat.h"//多个协议之间用逗号隔开@interface RootViewController () <UITableViewDataSource, UITableViewDelegate> {    UITableView *myTableView ;}@property (nonatomic, retain)NSMutableArray *catArray;//因为要删除, 设置成可变的@endstatic NSString *identifier = @"abc";@implementation RootViewController- (void)dealloc{    [_catArray release];    [super dealloc];}- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view.//    self.view.backgroundColor = [UIColor yellowColor];    myTableView = [[UITableView alloc] initWithFrame:[UIScreen mainScreen].bounds style:UITableViewStylePlain];    [self.view addSubview:myTableView];    myTableView.dataSource = self;//提供数据,    myTableView.delegate = self;//提供样式, 时刻    [myTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:identifier];    [myTableView release];    //从 plist 文件读取内容    NSString *path = [[NSBundle mainBundle] pathForResource:@"Cat" ofType:@"plist"];    NSArray *array = [NSArray arrayWithContentsOfFile:path];//最外层是数组    NSLog(@"%@", array);    //数组里面放字典(对象)    //数据封装    self.catArray = [NSMutableArray arrayWithCapacity:0];//数组初始化    for (NSDictionary *dic in array) {//得到的数组里面都是字典        //1和4比较常用        //1.属性//        Cat *cat = [[Cat alloc] init];//        cat.name = dic[@"name"];//        cat.type = dic[@"type"];//        [self.catArray addObject:cat];//        [cat release];//数组已经保留一份了        //2.KVC(间接访问属性)//        Cat *cat = [[Cat alloc] init];//        [cat setValue:dic[@"name"] forKey:@"name"];//        [cat  setValue:dic[@"type"] forKey:@"type"];//        [self.catArray addObject:cat];//        [cat release];//数组已经保留一份了        //3.KVC(多个赋值)(常用), key 值和属性名相同//        Cat *cat = [[Cat alloc] init];//        [cat setValuesForKeysWithDictionary:dic];//        [self.catArray addObject:cat];//        [cat release];//数组已经保留一份了        //4.        Cat *cat = [[Cat alloc] initWithDictionary:dic];// cat 类中分装了初始化字典的方法        [self.catArray addObject:cat];        [cat release];    }    NSLog(@"%@", self.catArray);    self.navigationItem.title = @"猫咪大全";    self.navigationItem.rightBarButtonItem = self.editButtonItem;    //tableView编辑的步骤:    //1.让 tabelView进入编辑状态    //2.指定哪些行, 进入编辑(默认全选), 可选的    //3.指定编辑的样式(默认是删除), 可选的    //4.编辑完成}//导航栏按钮,已经封装好了- (void)setEditing:(BOOL)editing animated:(BOOL)animated {    //继承一下父类的    [super setEditing:editing animated:animated];//切换    NSLog(@"%d", editing);//进入编辑1; 退出编辑0    //第一步: setEdit    [myTableView setEditing:editing animated:YES];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}#pragma mark - UITableViewDataSource- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {    return self.catArray.count;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier forIndexPath:indexPath];    Cat *cat = self.catArray[indexPath.row];//字典赋给对象    cell.textLabel.text = [NSString stringWithFormat:@"匿名: %@,    品种:%@",cat.name, cat.type];    return cell;}//第二步,canEdit- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {    if (indexPath.row == 0) {//第一行, 不进入编辑        return NO;    }    return YES;}//第四步,commitEditingStyle- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {    NSLog(@"%s", __FUNCTION__);    if (editingStyle == UITableViewCellEditingStyleDelete) {        //删除(原则:先删数据, 再删 cell)        [self.catArray removeObjectAtIndex:indexPath.row];        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationMiddle];    } else if (editingStyle == UITableViewCellEditingStyleInsert) {        //添加    }}#pragma mark - UITableViewDelegate//第三步,editingStyle- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {    if (indexPath.row == self.catArray.count - 1) {        return UITableViewCellEditingStyleInsert;    }    return UITableViewCellEditingStyleDelete;}@end//在 cat 里面写一个,init 方法(字典)#import "Cat.h"@implementation Cat- (void)dealloc{    [_name release];    [_type release];    [super dealloc];}- (instancetype)initWithName:(NSString *)name type:(NSString *)type {    if (self = [super init]) {//将父类初始化值, 赋给子类自己        self.name = name;        self.type = type;    }    return self;}+ (instancetype)catWithName:(NSString *)name type:(NSString *)type {    return [[[self alloc] initWithName:name type:type] autorelease];}- (instancetype)initWithDictionary:(NSDictionary *)otherDictionary {    if (self = [super init]) {        [self setValuesForKeysWithDictionary:otherDictionary];    }    return self;}//使用 KVC 赋值时,遇到没有定义的 key值- (void)setValue:(id)value forUndefinedKey:(NSString *)key {}//使用 KVC 取值时,遇到没有定义的 key值- (id)valueForUndefinedKey:(NSString *)key {    return nil;}- (NSString *)description{    return [NSString stringWithFormat:@"name:%@, type:%@", _name, _type];}@end