【iOS知识学习】_iPhone学习访问联系人

为了能够访问通讯录数据库，苹果开放了一些专门的API，iOS 6 之后应用访问通讯录，需要获得用户授权，通讯录对一个应用只授权一次，即使应用删除后重装，也不必再次授权。

导入

iOS 6 

#import <AddressBook/AddressBook.h>

#import <AddressBookUI/AddressBookUI.h>

iOS 9 

#import <Contacts/Contacts.h>

#import <ContactsUI/ContactsUI.h>

概述

AddressBook、AddressBookUI

AddressBook框架主要提供了直接访问通讯录中的记录和属性API，使用这些API，需要自己构建UI界面。

AddressBookUI框架提供了4个视图控制器和4个对应的委托协议，它们已经提供UI界面，不需要我们自己构建。

AddressBook框架常用的类

ABAddressBook 封装访问通讯录接口。Core Foundation框架中对应的类型是ABAddressBookRef。

ABPerson封装通讯录个人信息数据，是数据库的一条记录。Core Foundation框架中对应的类型是ABPersonRef。

ABGroup封装通讯录组信息数据，一个组包含了多个人的信息，一个人也可以隶属于多个组。Core Foundation框架中对应的类型是ABGroupRef。

ABRecord封装了数据库的一条记录，记录由属性组成。Core Foundation框架中对应的类型是ABRecordRef。

AddressBookUI框架中的视图控制器

ABPeoplePickerNavigationController它是从数据库中选取联系人的导航控制器，对应委托协议为ABPeoplePickerNavigationControllerDelegate。

ABPersonViewController查看并编辑单个联系人信息，对应的委托协议为ABPersonControllerDelegate。

ABNewPersonViewController创建新联系人信息，对应的委托协议为ABNewPersonViewControllerDelegate。

ABUnknownPersonViewController呈现记录部分信息，这些信息可以创建新联系人信息或添加到已经存在的联系人，对应的委托协议为ABUnknownPersonViewControllerDelegate。

注释：Core Foundation 框架（CF开头）和Foundtation框架（NS开头）紧密相关，它们为相同功能提供接口，但Foundation框架提供Object-C接口，Core Foundation框架提供C接口。它们某些类型可以互相转换。

读取联系人信息

//  MyAddressBookViewController.m//  iOS-Contact////  Created by ZhixiaoLiao on 16/9/9.//  Copyright © 2016年 ZhixiaoLiao. All rights reserved.//#import "MyAddressBookViewController.h"#import <AddressBook/AddressBook.h>#import <AddressBookUI/AddressBookUI.h>@interface MyAddressBookViewController ()<UISearchBarDelegate,UITableViewDelegate,UITableViewDataSource>@property (weak, nonatomic) IBOutlet UISearchBar *searchBar;@property (strong, nonatomic) NSArray *listContacts;@property (weak, nonatomic) IBOutlet UITableView *myTab;@end@implementation MyAddressBookViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view from its nib.        self.title = @"通讯录";        self.myTab.delegate = self;    self.myTab.dataSource = self;        self.searchBar.delegate = self;        CFErrorRef error = NULL;    ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, &error);    ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {        if (granted) {            //查询所有            [self filterContentForSearchText:@""];        }    });    CFRelease(addressBook);}- (void)filterContentForSearchText:(NSString *)searchText{    //如果没有授权，则退出    if (ABAddressBookGetAuthorizationStatus()!=kABAuthorizationStatusAuthorized) {        return;    }        CFErrorRef error = NULL;    ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, &error);    if ([searchText length] == 0) {        //查询所有        self.listContacts = CFBridgingRelease(ABAddressBookCopyArrayOfAllPeople(addressBook));    }else{        //查询条件        CFStringRef cfSearchText = (CFStringRef)CFBridgingRetain(searchText);        self.listContacts = CFBridgingRelease(ABAddressBookCopyPeopleWithName(addressBook, cfSearchText));        CFRelease(cfSearchText);    }    [self.myTab reloadData];    CFRelease(addressBook);}//获得焦点，成为第一响应者- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar{    return YES;}//点击键盘上的搜索按钮- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{    [self.searchBar resignFirstResponder];}//点击搜索栏中的取消按钮- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar{    //查询所有    [self filterContentForSearchText:self.searchBar.text];    [self.searchBar resignFirstResponder];}//文本内容发生改变时调用- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{    [self filterContentForSearchText:self.searchBar.text];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static NSString *identifier = @"Cell";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];    if (!cell) {        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];    }        ABRecordRef thisPerson = CFBridgingRetain(self.listContacts[indexPath.row]);        NSString *firstName = CFBridgingRelease(ABRecordCopyValue(thisPerson, kABPersonNoteProperty));    firstName = firstName != nil ?firstName:@"";        NSString *lastName = CFBridgingRelease(ABRecordCopyValue(thisPerson, kABPersonLastNamePhoneticProperty));    lastName = lastName != nil ?lastName:@"";        cell.textLabel.text = [NSString stringWithFormat:@"%@ %@",firstName,lastName];    //    NSString *name = CFBridgingRelease(ABRecordCopyCompositeName(thisPerson));//    cell.textLabel.text = name;        CFRelease(thisPerson);    return cell;}- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    return 1;}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return [self.listContacts count];}- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{    return 44.0f;}/*#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