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