UI基础--UITableView实现仿QQ好友列表页面

 1 //
 2 //  JWFriend.h
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import <Foundation/Foundation.h>
10 
11 @interface JWFriend : NSObject
12 @property (nonatomic,copy) NSString *icon;
13 @property (nonatomic,copy) NSString *intro;
14 @property (nonatomic,copy) NSString *name;
15 @property (nonatomic,assign,getter=isVip) BOOL vip;
16 - (instancetype)initWithDic:(NSDictionary *)dic;
17 + (instancetype)friendWithDic:(NSDictionary *)dic;
18 @end

 1 //
 2 //  JWFriend.m
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import "JWFriend.h"
10 
11 @implementation JWFriend
12 - (instancetype)initWithDic:(NSDictionary *)dic {
13     if (self = [super init]) {
14         [self setValuesForKeysWithDictionary:dic];//KVC的使用
15     }
16     return self;
17 }
18 + (instancetype)friendWithDic:(NSDictionary *)dic {
19     return [[self alloc] initWithDic:dic];
20 }
21 @end

 1 //
 2 //  JWFriendGroup.h
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import <Foundation/Foundation.h>
10 
11 @interface JWFriendGroup : NSObject
12 @property (nonatomic,strong) NSArray *friends;
13 @property (nonatomic,copy) NSString *name;
14 @property (nonatomic,assign) int online;
15 /*
16  组头是否展开，默认为NO
17  */
18 @property (nonatomic,assign,getter=isExpend) BOOL expend;
19 - (instancetype)initWithDic:(NSDictionary *)dic;
20 + (instancetype)friendGroupWithDic:(NSDictionary *)dic;
21 + (NSMutableArray *)friendGroupList;
22 @end

 1 //
 2 //  JWFriendGroup.m
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import "JWFriendGroup.h"
10 #import "JWFriend.h"
11 @implementation JWFriendGroup
12 - (instancetype)initWithDic:(NSDictionary *)dic {
13     if (self = [super init]) {
14         [self setValuesForKeysWithDictionary:dic];
15     }
16     return self;
17 }
18 + (instancetype)friendGroupWithDic:(NSDictionary *)dic {
19     return [[self alloc] initWithDic:dic];
20 }
21 
22 + (NSMutableArray *)friendGroupList {
23     NSArray *array = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"friends" ofType:@"plist"]];
24     
25     NSMutableArray *tempArray = [NSMutableArray array];
26     
27     for (NSDictionary *dic in array) {//字典转模型
28         JWFriendGroup *friendGroup = [JWFriendGroup friendGroupWithDic:dic];
29         
30         NSMutableArray *tem = [NSMutableArray array];
31         for (NSDictionary *dict in friendGroup.friends) {//模型里面还带有子弹，所以继续进行字典转模型步骤
32             JWFriend *friend = [JWFriend friendWithDic:dict];
33             [tem addObject:friend];
34         }
35         friendGroup.friends = tem;//转完模型后记得重新赋值
36         [tempArray addObject:friendGroup];
37     }
38     return tempArray;
39 }
40 @end

 1 //
 2 //  JWFriendCell.h
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import <UIKit/UIKit.h>
10 @class JWFriend;
11 @interface JWFriendCell : UITableViewCell
12 @property (nonatomic,strong) JWFriend *friendDatas;
13 + (instancetype)cellWithTableView:(UITableView *)tableView;
14 @end

 1 //
 2 //  JWFriendCell.m
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import "JWFriendCell.h"
10 #import "JWFriend.h"
11 @implementation JWFriendCell
12 //快速构造一个可重用的cee
13 + (instancetype)cellWithTableView:(UITableView *)tableView {
14     static NSString *resue = @"cell";
15     JWFriendCell *cell = [tableView dequeueReusableCellWithIdentifier:resue];
16     if (!cell) {
17         cell = [[self alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:resue];
18     }
19     return cell;
20 }
21 //重写set方法,给各子控件赋值
22 - (void)setFriendDatas:(JWFriend *)friendDatas {
23     _friendDatas = friendDatas;
24     self.textLabel.text = friendDatas.name;
25     self.detailTextLabel.text = friendDatas.intro;
26     self.imageView.image = [UIImage imageNamed:friendDatas.icon];
27     self.textLabel.textColor = friendDatas.isVip ? [UIColor redColor] : [UIColor blackColor];//如果是vip，那么呢称字体为红色
28 }
29 @end

 1 //
 2 //  JWFriendHeaderView.h
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import <UIKit/UIKit.h>
10 @class JWFriendGroup,JWFriendHeaderView;
11 @protocol JWFriendHeaderViewDelegate <NSObject>
12 @optional
13 - (void)clickNameBtn:(JWFriendHeaderView *)headerView;
14 
15 @end
16 @interface JWFriendHeaderView : UITableViewHeaderFooterView
17 @property (nonatomic,strong) JWFriendGroup *friendGroup;
18 @property (nonatomic,assign) id<JWFriendHeaderViewDelegate> delegate;
19 + (instancetype)headerViewWithTableView:(UITableView *)tableView;
20 @end

 1 //
 2 //  JWFriendHeaderView.m
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import "JWFriendHeaderView.h"
10 #import "JWFriendGroup.h"
11 @interface JWFriendHeaderView ()
12 @property (nonatomic,weak) UIButton *nameView;
13 @property (nonatomic,weak) UILabel *countLabel;
14 @end
15 @implementation JWFriendHeaderView
16 //快速构造一个可重用的组头
17 + (instancetype)headerViewWithTableView:(UITableView *)tableView {
18     static NSString *resue = @"head";//缓存池标识
19     JWFriendHeaderView *headerView = [tableView dequeueReusableCellWithIdentifier:resue];
20     if (!headerView) {
21         headerView = [[self alloc] initWithReuseIdentifier:resue];
22     }
23     return headerView;
24 }
25 //重写方法，初始化控件
26 - (instancetype)initWithReuseIdentifier:(NSString *)reuseIdentifier {
27     if (self = [super initWithReuseIdentifier:reuseIdentifier]) {
28         UIButton *nameBtn = [UIButton buttonWithType:UIButtonTypeCustom];
29         [self.contentView addSubview:nameBtn];
30         self.nameView = nameBtn;
31         //按钮的一些属性的设置
32         [nameBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
33         [nameBtn setImage:[UIImage imageNamed:@"buddy_header_arrow"] forState:UIControlStateNormal];
34         [nameBtn setBackgroundImage:[UIImage imageNamed:@"buddy_header_bg"] forState:UIControlStateNormal];
35         [nameBtn setBackgroundImage:[UIImage imageNamed:@"buddy_header_bg_highlighted"] forState:UIControlStateHighlighted];
36         nameBtn.contentEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);//按钮内容的间距，左间距为10
37         nameBtn.titleEdgeInsets =  UIEdgeInsetsMake(0, 10, 0, 0);//文字内容的间距，左间距为10
38         nameBtn.imageView.contentMode = UIViewContentModeCenter;//不缩放按钮图片
39         nameBtn.imageView.clipsToBounds = NO;//图片超出部分不裁剪
40         nameBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;//设置左对齐
41         [nameBtn addTarget:self action:@selector(nameClick) forControlEvents:UIControlEventTouchUpInside];//注册按钮点击事件
42         
43         UILabel *countLabel  = [[UILabel alloc] init];
44         [self.contentView addSubview:countLabel];
45         self.countLabel = countLabel;
46         //文本标签的一些属性的设置
47         countLabel.textAlignment = NSTextAlignmentRight;
48         countLabel.font = [UIFont systemFontOfSize:14];
49         countLabel.textColor = [UIColor grayColor];
50     }
51     return self;
52 }
53 //这个方法改变了组头的frame后就会调用，那么可以在这里设置frame了
54 - (void)layoutSubviews {
55     [super layoutSubviews];//记得必须先实现父类的该方法
56     self.nameView.frame = self.bounds;
57     CGFloat countX = self.bounds.size.width - 10 - 150;
58     self.countLabel.frame = CGRectMake(countX, 0, 150, 44);
59 }
60 //点击组头按钮事件
61 - (void)nameClick {
62     self.friendGroup.expend = !self.friendGroup.isExpend;//获取组头是否展开状态
63     [self expend];//调用封装的一个方法，如果展开，那么图片旋转90度，否则不展开
64     if ([self.delegate respondsToSelector:@selector(clickNameBtn:)]) {//通知代理，点击了组头按钮
65         [self.delegate clickNameBtn:self];
66     }
67 }
68 //重写set方法，给各控件赋值
69 - (void)setFriendGroup:(JWFriendGroup *)friendGroup {
70     _friendGroup = friendGroup;//这句记得写，否则会造成没有内容显示
71     [self.nameView setTitle:friendGroup.name forState:UIControlStateNormal];
72     self.countLabel.text = [NSString stringWithFormat:@"%d/%lu",friendGroup.online,(unsigned long)friendGroup.friends.count];
73     [self expend];//调用封装的一个方法，如果展开，那么图片旋转90度，否则不展开
74 }
75 //封装的方法,如果展开，那么图片旋转90度，否则旋转度为0
76 - (void)expend {
77     CGFloat angle = self.friendGroup.isExpend ? M_PI_2 : 0;
78     [UIView animateWithDuration:0.5 animations:^{
79         self.nameView.imageView.transform = CGAffineTransformMakeRotation(angle);
80     }];
81 }
82 @end

 1 //
 2 //  ViewController.m
 3 //  12-24-FriendGroup
 4 //
 5 //  Created by xiaomoge on 14/12/24.
 6 //  Copyright (c) 2014年 xiaomoge. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 #import "JWFriend.h"
11 #import "JWFriendGroup.h"
12 #import "JWFriendHeaderView.h"
13 #import "JWFriendCell.h"
14 @interface ViewController () <JWFriendHeaderViewDelegate>
15 @property (nonatomic,strong) NSArray *friendGroup;
16 @end
17 
18 @implementation ViewController
19 #pragma mark - 隐藏状态栏
20 - (BOOL)prefersStatusBarHidden {
21     return YES;
22 }
23 #pragma mark - 懒加载
24 - (NSArray *)friendGroup {
25     if (!_friendGroup) {
26         _friendGroup = [JWFriendGroup friendGroupList];
27     }
28     return _friendGroup;
29 }
30 - (void)viewDidLoad {
31     [super viewDidLoad];
32     //设置组头的高度
33     self.tableView.sectionHeaderHeight = 44;
34 }
35 #pragma mark - tableViewDatasouce的方法
36 //显示多少组数据
37 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
38     return self.friendGroup.count;
39 }
40 //每组数据显示多少行数据
41 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
42     return [self.friendGroup[section] isExpend ]?[self.friendGroup[section] friends].count : 0;//这里使用了三目运算符，主要是判断如果组头是展开的，那么显示行数据，否则显示为0
43 }
44 //显示每个cell的内容
45 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
46     JWFriendCell *cell = [JWFriendCell cellWithTableView:tableView];
47     cell.friendDatas = [self.friendGroup[indexPath.section] friends][indexPath.row];
48     return cell;
49 }
50 #pragma mark - JWFriendHeaderView的方法
51 //显示组头view的内容
52 - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
53     JWFriendHeaderView *headerView = [JWFriendHeaderView headerViewWithTableView:tableView];
54     headerView.friendGroup = self.friendGroup[section];
55     headerView.delegate = self;
56     headerView.tag = section;//把section赋值给组头的tag
57     return headerView;
58 }
59 #pragma mark - JWFriendHeaderViewDelegate的方法
60 - (void)clickNameBtn:(JWFriendHeaderView *)headerView {
61     NSIndexSet *indexSet = [NSIndexSet indexSetWithIndex:headerView.tag];
62     [self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationNone];//判断点击的是哪个组头，然后加载对应的数据
63 }
64 @end