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

@end
static 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