//
// RootViewController.m
// UI10_UITableView2
//
// Created by Marry W. on 12/18/15.
// Copyright (c) 2015 www.lanou3g.com 蓝鸥科技. All rights reserved.
//

import "RootViewController.h"

import "NSString+Characters.h"

@interface RootViewController () <UITableViewDataSource, UITableViewDelegate>
@property (nonatomic, retain) NSMutableArray *arr;// 保存key
@property (nonatomic, retain) NSMutableDictionary *contactDic;// 保存所有联系人
@property (nonatomic, retain) UITableView *tableView;

@end

@implementation RootViewController

(void)dealloc
{
```
[_arr release];
[super dealloc];
```
}

(void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor whiteColor];
// tableView
self.tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStyleGrouped];
_tableView.delegate = self;
_tableView.dataSource = self;
[self.view addSubview:_tableView];
[_tableView release];
// 数据处理
[self data];
}
(void)data
{
// plist文件属性列表
// 获取文件路径
NSString *path = [[NSBundle mainBundle]pathForResource:@"ContactList" ofType:@"plist"];
// 创建数组
NSArray *tempArr = [NSArray arrayWithContentsOfFile:path];
// 临时数组保存数据源
// NSArray *tempArr = @[@{@"name": @"恩叔", @"sex": @"男", @"phone": @"111"}, @{@"name": @"大娃", @"sex": @"男", @"phone": @"222"}, @{@"name": @"石美妮", @"sex": @"女", @"phone": @"333"}, @{@"name": @"三爷", @"sex": @"男", @"phone": @"444"} , @{@"name": @"张伟", @"sex": @"男", @"phone": @"555"}, @{@"name": @"恩叔2", @"sex": @"男", @"phone": @"666"}];
// 初始化字典
self.contactDic = [NSMutableDictionary dictionary];
// 遍历数据源
for (NSDictionary *dic in tempArr) {
```
// 获取到每个字典中 name的首字母
NSString *captialLetter = [dic[@"name"] firstCharacterOfName];
// 先通过首字母 从联系人字典中获取对应的数组
NSMutableArray *contactArr = _contactDic[captialLetter];
// 判断 数组是否存在
// 如果存在 直接添加
if (contactArr) {
    [contactArr addObject:dic];
} else {
    // 如果不存在 则新建数组
    NSMutableArray *newArr = [NSMutableArray array];
    // 添加联系人
    [newArr addObject:dic];
    // 添加到联系人字典中
    [_contactDic setObject:newArr forKey:captialLetter];
}
```
}
// 获取有序的key数组
self.arr = [[_contactDic.allKeys sortedArrayUsingSelector:@selector(compare:)] mutableCopy];
}

// 分区数

(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return _contactDic.count;
}

// 分区名

(NSString )tableView:(UITableView )tableView titleForHeaderInSection:(NSInteger)section
{
return _arr[section];
}

// 每个分区的行数

(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// 获取key
NSString *key = _arr[section];
// 获取key对应的联系人数组
NSArray *arr = _contactDic[key];
return arr.count;
}
(UITableViewCell )tableView:(UITableView )tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
if (!cell) {
```
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"cell"] autorelease];
```
}
// 字面量
// cell.textLabel.text = _arrindexPath.row;
// 方法调用
// cell.textLabel.text = [[_arr objectAtIndex:indexPath.row] objectForKey:@"name"];

// cell.detailTextLabel.text = [[_arr objectAtIndex:indexPath.row] objectForKey:@"phone"];


// 获取key
NSString *key = _arr[indexPath.section];
// 获取key对应的数组
NSArray *arr = _contactDic[key];
// 获取每一个联系人
NSDictionary *dic = arr[indexPath.row];
// 设置
cell.textLabel.text = dic[@"name"];
cell.detailTextLabel.text = dic[@"phone"];

return cell;

}
// 右侧索引

(NSArray )sectionIndexTitlesForTableView:(UITableView )tableView
{
return _arr;
}
(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