03通讯录(搭建编辑界面)

//
//  XMGContactViewController.h
//  小码哥通讯录

#import <UIKit/UIKit.h>
@class XMGContact;
@interface XMGContactViewController : UITableViewController

@end

//
//  XMGContactViewController.m
//  小码哥通讯录//
#import "XMGContactViewController.h"
#import "XMGAddViewController.h"
#import "XMGEditViewController.h"
#import "XMGContact.h"
@interface XMGContactViewController ()<UIActionSheetDelegate,XMGAddViewControllerDelegate>

@property (nonatomic, strong) NSMutableArray *contacts;

@end

@implementation XMGContactViewController

- (NSMutableArray *)contacts
{
    if (_contacts == nil) {

        _contacts = [NSMutableArray array];

    }
    return _contacts;
}

// 跳转之前的时候调用
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{

    // 给添加控制器传递联系人控制器属性
    XMGAddViewController *addVc = segue.destinationViewController;

    addVc.delegate = self;

}

#pragma mark - 添加控制器代理方法
- (void)addViewController:(XMGAddViewController *)addVc didClickAddBtnWithContact:(XMGContact *)contact
{
    // 把添加界面的联系人模型传递到联系人界面

    // 把联系人模型保存到数组
    [self.contacts addObject:contact];

    // 刷新表格
    [self.tableView reloadData];

}

// 点击注销的时候调用
- (IBAction)logout:(id)sender {

    // 弹出actionSheet
    UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"是否注销?" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"注销" otherButtonTitles:nil, nil];

    [sheet showInView:self.view];

}
#pragma mark - UIActionSheetDelegate
// 点击UIActionSheet控件上的按钮调用
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if (buttonIndex == 0) { // 点击了注销

        [self.navigationController popViewControllerAnimated:YES];

    }

}

- (void)viewDidLoad {
    [super viewDidLoad];

//    // 取消分割线
//    self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;

    // tableView有数据的时候才需要分割线

    // 开发小技巧:快速取消分割线
    self.tableView.tableFooterView = [[UIView alloc] init];

}

#pragma mark - Table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return self.contacts.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    // 创建标示符
    static NSString *ID = @"cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:ID];
    }

    // 获取模型
    XMGContact *c = self.contacts[indexPath.row];

    cell.textLabel.text = c.name;
    cell.detailTextLabel.text = c.phone;

    return cell;
}

#pragma mark - tableView代理方法
// 点击cell的时候调用
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // 加载storyboard
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

    // 创建编辑控制器
     XMGEditViewController *editVc = [storyboard instantiateViewControllerWithIdentifier:@"edit"];

    editVc.contact = self.contacts[indexPath.row];

    // 跳转到编辑界面
    [self.navigationController pushViewController:editVc animated:YES];

}
@end

//
//  XMGEditViewController.h
//  小码哥通讯录

#import <UIKit/UIKit.h>

@class XMGContact;

@interface XMGEditViewController : UIViewController

@property (nonatomic, strong) XMGContact *contact;

@end

//
//  XMGEditViewController.m
//  小码哥通讯录
#import "XMGEditViewController.h"
#import "XMGContact.h"

@interface XMGEditViewController ()
@property (weak, nonatomic) IBOutlet UITextField *nameField;
@property (weak, nonatomic) IBOutlet UITextField *phoneField;
@property (weak, nonatomic) IBOutlet UIButton *saveBtn;

@end

@implementation XMGEditViewController

/*
 控制器之间传值：一定要注意控制器的子控件有没有加载，一定要在子控件加载完成的时候才去给子控件赋值，一般在viewDidLoad给控件赋值。

 */
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    // 设置导航条的标题
    self.title = @"查看/编辑界面";

    // 设置导航条右边的按钮
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"编辑" style:UIBarButtonItemStyleDone target:self action:@selector(edit:)];

    // 给文本框
    _nameField.text = _contact.name;
    _phoneField.text = _contact.phone;

    // 给文本框添加监听器,及时监听文本框内容的改变
    [_nameField addTarget:self action:@selector(textChange) forControlEvents:UIControlEventEditingChanged];
    [_phoneField addTarget:self action:@selector(textChange) forControlEvents:UIControlEventEditingChanged];

    // 判断下登录按钮能否点击
    [self textChange];

}

// 任一一个文本框的内容改变都会调用
- (void)textChange
{
    _saveBtn.enabled = _nameField.text.length && _phoneField.text.length;

}

// 点击编辑的时候调用
- (void)edit:(UIBarButtonItem *)item
{
    NSLog(@"%@",item);

    if ([item.title isEqualToString:@"编辑"]) {
        // 更改标题
        item.title = @"取消";

        // 让文本框允许编辑
        _nameField.enabled = YES;
        _phoneField.enabled = YES;

        // 弹出电话文本框的键盘
        [_phoneField becomeFirstResponder];

        // 显示保存按钮
        _saveBtn.hidden = NO;

    }else{
        // 更改标题
        item.title = @"编辑";

//        // 退出键盘
//        [self.view endEditing:YES];

        // 隐藏保存按钮
        _saveBtn.hidden = YES;

        // 让文本框不允许编辑
        _nameField.enabled = NO;
        _phoneField.enabled = NO;
    }

}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end

小码哥通讯录(保存功能)

//
//  XMGEditViewController.h
//  小码哥通讯录

#import <UIKit/UIKit.h>

@class XMGContact;

// 定义block类型别名
typedef void(^XMGEditViewControllerBlock)();

@interface XMGEditViewController : UIViewController

@property (nonatomic, strong) XMGContact *contact;

@property (nonatomic, strong) XMGEditViewControllerBlock block;

@end

//
//  XMGEditViewController.m
//  小码哥通讯录
#import "XMGEditViewController.h"
#import "XMGContact.h"

@interface XMGEditViewController ()
@property (weak, nonatomic) IBOutlet UITextField *nameField;
@property (weak, nonatomic) IBOutlet UITextField *phoneField;
@property (weak, nonatomic) IBOutlet UIButton *saveBtn;

@end

@implementation XMGEditViewController
// 点击保存的时候调用
- (IBAction)save:(id)sender {
    // 修改模型数据
    _contact.name = _nameField.text;
    _contact.phone = _phoneField.text;

#warning TODO:
    // 让小弟做事情，刷新表格
    if (_block) {

        _block();
    }

    // 回到上一个控制器
    [self.navigationController popViewControllerAnimated:YES];

}

/*
 控制器之间传值：一定要注意控制器的子控件有没有加载，一定要在子控件加载完成的时候才去给子控件赋值，一般在viewDidLoad给控件赋值。

 */
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    // 设置导航条的标题
    self.title = @"查看/编辑界面";

    // 设置导航条右边的按钮
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"编辑" style:UIBarButtonItemStyleDone target:self action:@selector(edit:)];

    // 给文本框
    _nameField.text = _contact.name;
    _phoneField.text = _contact.phone;

    // 给文本框添加监听器,及时监听文本框内容的改变
    [_nameField addTarget:self action:@selector(textChange) forControlEvents:UIControlEventEditingChanged];
    [_phoneField addTarget:self action:@selector(textChange) forControlEvents:UIControlEventEditingChanged];

    // 判断下登录按钮能否点击
    [self textChange];

}

// 任一一个文本框的内容改变都会调用
- (void)textChange
{
    _saveBtn.enabled = _nameField.text.length && _phoneField.text.length;

}

// 点击编辑的时候调用
- (void)edit:(UIBarButtonItem *)item
{
    NSLog(@"%@",item);

    if ([item.title isEqualToString:@"编辑"]) {
        // 更改标题
        item.title = @"取消";

        // 让文本框允许编辑
        _nameField.enabled = YES;
        _phoneField.enabled = YES;

        // 弹出电话文本框的键盘
        [_phoneField becomeFirstResponder];

        // 显示保存按钮
        _saveBtn.hidden = NO;

    }else{
        // 更改标题
        item.title = @"编辑";

//        // 退出键盘
//        [self.view endEditing:YES];

        // 隐藏保存按钮
        _saveBtn.hidden = YES;

        // 让文本框不允许编辑
        _nameField.enabled = NO;
        _phoneField.enabled = NO;

        // 还原数据
        _nameField.text = _contact.name;
        _phoneField.text = _contact.phone;
    }

}

- (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

//
//  XMGContactViewController.m
//  小码哥通讯录
#import "XMGContactViewController.h"
#import "XMGAddViewController.h"
#import "XMGEditViewController.h"
#import "XMGContact.h"
@interface XMGContactViewController ()<UIActionSheetDelegate,XMGAddViewControllerDelegate>

@property (nonatomic, strong) NSMutableArray *contacts;

@end

@implementation XMGContactViewController

- (NSMutableArray *)contacts
{
    if (_contacts == nil) {

        _contacts = [NSMutableArray array];

    }
    return _contacts;
}

// 跳转之前的时候调用
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{

    // 给添加控制器传递联系人控制器属性
    XMGAddViewController *addVc = segue.destinationViewController;

    addVc.delegate = self;

}

#pragma mark - 添加控制器代理方法
- (void)addViewController:(XMGAddViewController *)addVc didClickAddBtnWithContact:(XMGContact *)contact
{
    // 把添加界面的联系人模型传递到联系人界面

    // 把联系人模型保存到数组
    [self.contacts addObject:contact];

    // 刷新表格
    [self.tableView reloadData];

}

// 点击注销的时候调用
- (IBAction)logout:(id)sender {

    // 弹出actionSheet
    UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"是否注销?" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"注销" otherButtonTitles:nil, nil];

    [sheet showInView:self.view];

}
#pragma mark - UIActionSheetDelegate
// 点击UIActionSheet控件上的按钮调用
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if (buttonIndex == 0) { // 点击了注销

        [self.navigationController popViewControllerAnimated:YES];

    }

}

- (void)viewDidLoad {
    [super viewDidLoad];

//    // 取消分割线
//    self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;

    // tableView有数据的时候才需要分割线

    // 开发小技巧:快速取消分割线
    self.tableView.tableFooterView = [[UIView alloc] init];

}

#pragma mark - Table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return self.contacts.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    // 创建标示符
    static NSString *ID = @"cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:ID];
    }

    // 获取模型
    XMGContact *c = self.contacts[indexPath.row];

    cell.textLabel.text = c.name;
    cell.detailTextLabel.text = c.phone;

    return cell;
}

#pragma mark - tableView代理方法
// 点击cell的时候调用
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // 加载storyboard
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

    // 创建编辑控制器
     XMGEditViewController *editVc = [storyboard instantiateViewControllerWithIdentifier:@"edit"];

    editVc.contact = self.contacts[indexPath.row];
    editVc.block = ^(){ // 刷新表格
        [self.tableView reloadData];
    };

    // 跳转到编辑界面
    [self.navigationController pushViewController:editVc animated:YES];

}
@end