#import <UIKit/UIKit.h> @interface AppDelegate : UIResponder <UIApplicationDelegate> @property (strong, nonatomic) UIWindow *window; @end
#import "AppDelegate.h"
#import "YXYCViewController.h"
@interface AppDelegate () @end @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor]; self.window.rootViewController = [[YXYCViewController alloc] init]; [self.window makeKeyAndVisible];
return YES;
} @end
#import <UIKit/UIKit.h> @interface YXYCViewController : UIViewController @end
#import "YXYCViewController.h"
#import "YXYCChatUser.h"
#import "YXYCChatTableViewDataSource.h"
#import <QuartzCore/QuartzCore.h>
#import "YXYCChatTableView.h"
#import "YXYCChatData.h"
#define lineHeight 16.0f
#define scale [UIScreen mainScreen].bounds.size.width/320.0
@interface YXYCViewController ()<YXYCChatTableViewDataSource,UITextViewDelegate>
{
UIView *textInputView;
UITextField *textField;
NSMutableArray *Chats; UIView *sendView;
UIButton *sendButton;
UITextView *msgText;
BOOL composing;
float prevLines;
YXYCChatUser *me;
YXYCChatUser *you;
//键盘的高度
float keyboardHeight;
}
@property (strong, nonatomic) YXYCChatTableView *chatTable;
@end @implementation YXYCViewController CGRect appFrame;
- (void)viewDidLoad {
[super viewDidLoad];
// 添加监听
[self addNotification];
// 设置背景颜色
self.view.backgroundColor = [UIColor lightGrayColor];
// 初始化tableView
[self setupTableView];
// 初始化view和textView
[self setupUIViewAndUITextView];
// 初始化sendButton
[self setupSendButton];
// 加载数据
[self loadData]; }
// 初始化YXYCChatTableView
- (void)setupTableView
{
appFrame = [[UIScreen mainScreen] bounds];
// 创建一个self.chatTable（YXYCChatTableView类型）
self.chatTable = [[YXYCChatTableView alloc] initWithFrame:CGRectMake(, , [[UIScreen mainScreen] bounds].size.width, [[UIScreen mainScreen] bounds].size.height - ) style:UITableViewStylePlain];
// 设置self.chatTable的背景颜色
self.chatTable.backgroundColor = [UIColor whiteColor];
[self.view addSubview:self.chatTable];
}
// 初始化sendView和msgText
- (void)setupUIViewAndUITextView
{
// 初始化sendView
sendView = [[UIView alloc] initWithFrame:CGRectMake(, appFrame.size.height-, appFrame.size.width, )];
sendView.backgroundColor = [UIColor blueColor];
sendView.alpha = 0.9;
// 初始化msgText
msgText = [[UITextView alloc] initWithFrame:CGRectMake(, , *scale, )];
msgText.backgroundColor = [UIColor whiteColor];
msgText.textColor = [UIColor blackColor];
msgText.font = [UIFont boldSystemFontOfSize:];
// 自动调整与父视图的位置 UIViewAutoresizingFlexibleHeight 自动调整自己的高度，保证与superView顶部和底部的距离不变；UIViewAutoresizingFlexibleTopMargin 自动调整与superView顶部的距离，保证与superView底部的距离不变。
msgText.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleTopMargin;
// 设置圆角半径
msgText.layer.cornerRadius = 10.0f;
// 设置键盘返回键的类型
msgText.returnKeyType = UIReturnKeySend;
msgText.showsHorizontalScrollIndicator = NO;
msgText.showsVerticalScrollIndicator = NO;
// 设置UITextView代理
msgText.delegate = self;
[sendView addSubview:msgText];
msgText.contentInset = UIEdgeInsetsMake(, , , );
[self.view addSubview:sendView];
}
// 初始化sendButton
- (void)setupSendButton
{
sendButton = [[UIButton alloc] initWithFrame:CGRectMake(*scale, , , )];
sendButton.backgroundColor = [UIColor lightGrayColor];
[sendButton addTarget:self action:@selector(sendMessage) forControlEvents:UIControlEventTouchUpInside];
// 自动调整与父视图的位置
sendButton.autoresizingMask = UIViewAutoresizingFlexibleTopMargin;
sendButton.layer.cornerRadius = 6.0f;
[sendButton setTitle:@"Send" forState:UIControlStateNormal];
[sendView addSubview:sendButton];
}
// 加载数据
- (void)loadData
{
// 创建两个YXYCChatUser对象
me = [[YXYCChatUser alloc] initWithUsername:@"Peter" avatarImage:[UIImage imageNamed:@"me.png"]];
you = [[YXYCChatUser alloc] initWithUsername:@"You" avatarImage:[UIImage imageNamed:@"noavatar.png"]];
//创建几个YXYCChatData对象
YXYCChatData *first = [YXYCChatData dataWithText:@"Hey,how are you doing? I'm in Paris take a look at this picture." date:[NSDate dateWithTimeIntervalSinceNow:-] type:ChatTypeMine andUser:me];
YXYCChatData *second = [YXYCChatData dataWithImage:[UIImage imageNamed:@"eiffeltower.jpg"] date:[NSDate dateWithTimeIntervalSinceNow:-] type:ChatTypeMine andUser:me];
YXYCChatData *third = [YXYCChatData dataWithText:@"Wow..Really cool picture out there. Wish I could be with you" date:[NSDate dateWithTimeIntervalSinceNow:-] type:ChatTypeSomeone andUser:you];
YXYCChatData *forth = [YXYCChatData dataWithText:@"Maybe next time you can come with me." date:[NSDate dateWithTimeIntervalSinceNow:+] type:ChatTypeMine andUser:me];
// 通过YXYCChatData对象来初始化Chats（数组）
Chats = [[NSMutableArray alloc] initWithObjects:first,second,third,forth, nil];
// 确认YXYCChatTableViewDataSource的代理
self.chatTable.chatDataSource = self;
// 调用reloadData方法（此方法已被重写）
[self.chatTable reloadData];
}
// 页面消失时移除监听
- (void)viewDidDisappear:(BOOL)animated
{
[self removeNotification];
} - (void)sendMessage
{
composing = NO;
YXYCChatData *thisChat = [YXYCChatData dataWithText:msgText.text date:[NSDate date] type:ChatTypeMine andUser:me];
[Chats addObject:thisChat];
[self.chatTable reloadData];
[self showTableView];
// 注销msgText为第一响应者
[msgText resignFirstResponder];
// 清除原来的文本内容
msgText.text = @"";
sendView.frame = CGRectMake(, appFrame.size.height - , *scale, );
// TODO:注意
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[Chats count] inSection:];
// tableView 滚到底部
[self.chatTable scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:YES];
} #pragma mark -UITextViewDelegat-
//如果用户按回车键，则认为结束编辑，并进行发送消息
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
if ([text isEqualToString:@"\n"]) {
[self sendMessage];
return NO;
}
return YES;
} /**
* @return 返回输入文本在UITextView上的高度
*/
- (CGFloat)textY
{
// 设置字体的样式和大小
UIFont *systemFont = [UIFont boldSystemFontOfSize:];
int width = 225.0, heigth = 10000.0;
NSMutableDictionary *atts = [[NSMutableDictionary alloc] init];
[atts setObject:systemFont forKey:NSFontAttributeName];
// 根据文字量返回CGRect
CGRect size = [msgText.text boundingRectWithSize:CGSizeMake(width, heigth) options:NSStringDrawingUsesLineFragmentOrigin attributes:atts context:nil];
//获取文字的高度
float textHeight = size.size.height; float lines = textHeight / lineHeight;
if (lines >= ) {
lines = ;
}
if ([msgText.text length] == ) {
lines = 0.9375f;
}
return - (lines * lineHeight) + lineHeight;
}
// 输入文字时，重新计算和布置sendView的frame，并保持在键盘上方
- (void)textViewDidChange:(UITextView *)textView
{
// 设置文字的样式和大小
UIFont *systemFont = [UIFont boldSystemFontOfSize:];
int width = 225.0, height = 10000.0;
NSMutableDictionary *atts = [[NSMutableDictionary alloc] init];
[atts setObject:systemFont forKey:NSFontAttributeName]; CGRect size = [msgText.text boundingRectWithSize:CGSizeMake(width, height) options:NSStringDrawingUsesLineFragmentOrigin attributes:atts context:nil];
float textHeight = size.size.height;
float lines = textHeight / lineHeight;
if (lines > ) {
lines = ;
} composing = YES;
msgText.contentInset = UIEdgeInsetsMake(, , , );
sendView.frame = CGRectMake(, appFrame.size.height - keyboardHeight - - (lines * lineHeight) + lineHeight, appFrame.size.width, + (lines * lineHeight) - lineHeight); if (prevLines != lines) {
[self shortenTableView];
}
prevLines = lines;
} // let's change the frame of the chatTable so we can see the bottom
- (void)shortenTableView
{
[UIView beginAnimations:@"moveView" context:nil];
[UIView setAnimationDuration:0.1];
self.chatTable.frame = CGRectMake(, , appFrame.size.width, appFrame.size.height - keyboardHeight- - );
[UIView commitAnimations];
prevLines = ;
} // show the chatTable as it was
- (void)showTableView
{
[UIView beginAnimations:@"moveView" context:nil];
[UIView setAnimationDuration:0.1];
self.chatTable.frame = CGRectMake(, , appFrame.size.width, appFrame.size.height - - );
[UIView commitAnimations];
} // when users starts typing change the frame position and shorten the chatTable
- (void)textViewDidBeginEditing:(UITextView *)textView
{
[UIView beginAnimations:@"moveView" context:nil];
[UIView setAnimationDuration:0.3];
sendView.frame = CGRectMake(, appFrame.size.height - keyboardHeight - , appFrame.size.width, );
[UIView commitAnimations];
[self shortenTableView];
// 变成第一响应者
[msgText becomeFirstResponder];
} - (void)addNotification
{
//键盘出现通知
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(handleKeyBoardShow:)
name:UIKeyboardWillShowNotification object:nil];
}
#pragma mark - keyboard delegate
-(void)handleKeyBoardShow:(NSNotification*)notify
{
NSDictionary *info = [notify userInfo];
// 获取键盘的尺寸
CGSize keyboardSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
//获取键盘的高度
keyboardHeight = keyboardSize.height;
}
// 移除监听
-(void)removeNotification
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
} - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
} #pragma mark - YXYCChatTableView implementation
// here are the required implementation from your YXYCChatTableViewDataSource
- (NSInteger)rowsForChatTable:(YXYCChatTableView *)tableView
{
return [Chats count];
} - (YXYCChatData *)chatTableView:(YXYCChatTableView *)tableView dataForRow:(NSInteger)row
{
return [Chats objectAtIndex:row];
} - (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning]; } @end
#import <Foundation/Foundation.h> @class YXYCChatData;
@class YXYCChatTableView;
@protocol YXYCChatTableViewDataSource <NSObject> - (NSInteger)rowsForChatTable:(YXYCChatTableView *)tableView;
- (YXYCChatData *)chatTableView:(YXYCChatTableView *)tableView dataForRow:(NSInteger)row; @end
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@class YXYCChatUser;
//枚举（聊天类型）
typedef enum _YXYCChatType
{
ChatTypeMine = ,
ChatTypeSomeone =
} YXYCChatType; @interface YXYCChatData : NSObject
/**
* 聊天的对象类型
*/
@property (readonly, nonatomic) YXYCChatType type;
/**
* 日期
*/
@property (readonly, nonatomic, strong) NSDate *date;
@property (readonly, nonatomic, strong) UIView *view;
@property (readonly, nonatomic) UIEdgeInsets insets;
/**
* 聊天的用户
*/
@property (nonatomic, strong) YXYCChatUser *chatUser; // 自定义初始化
+ (id)dataWithText:(NSString *)text date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user; + (id)dataWithImage:(UIImage *)image date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user; + (id)dataWithView:(UIView *)view date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user insets:(UIEdgeInsets)insets; @end
#import "YXYCChatData.h"
#import <QuartzCore/QuartzCore.h> @implementation YXYCChatData //设置一些文本和图片的常量
const UIEdgeInsets textInsetsMine = {, , , };
const UIEdgeInsets textInsetsSomeone = {, , , };
const UIEdgeInsets imageInsetsMine = {, , , };
const UIEdgeInsets imageInsetsSomeone = {, , , }; #pragma mark initializers
+ (id)dataWithText:(NSString *)text date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user
{
return [[YXYCChatData alloc] initWithText:text date:date type:type andUser:_user];
}
/**
* 初始化
*
* @param text 内容
* @param date 日期
* @param type 聊天对象类型
* @param _user 用户
*
* @return YXYCChatData对象
*/
- (id)initWithText:(NSString *)text date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user
{
// 设置字体
UIFont *font = [UIFont boldSystemFontOfSize:];
// 文本显示的宽，以及最大的高度
int width = , height = 10000.0;
NSMutableDictionary *atts = [[NSMutableDictionary alloc] init];
[atts setObject:font forKey:NSFontAttributeName];
// 根据文本内容返回CGRect
CGRect size = [text boundingRectWithSize:CGSizeMake(width, height) options:NSStringDrawingUsesLineFragmentOrigin attributes:atts context:nil];
// 根据返回的尺寸初始化Label
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(, , size.size.width, size.size.height)];
// 可多行输入
label.numberOfLines = ;
// 以单词为单位换行，以单位为单位截断
label.lineBreakMode = NSLineBreakByWordWrapping;
// text参数若存在，Label则显示text的内容；否则Label不显示文本内容
label.text = (text ? text : @"");
label.font = font;
label.backgroundColor = [UIColor clearColor];
UIEdgeInsets insets = (type == ChatTypeMine ? textInsetsMine : textInsetsSomeone);
return [self initWithView:label date:date type:type andUser:_user insets:insets];
} + (id)dataWithImage:(UIImage *)image date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user
{
return [[YXYCChatData alloc] initWithImage:image date:date type:type andUser:_user];
}
/**
* 初始化
*
* @param image 图片
* @param date 日期
* @param type 聊天对象的类型
* @param _user 用户
*
* @return YXYCChatData对象类型
*/
- (id)initWithImage:(UIImage *)image date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user
{
// 获取图片的尺寸
CGSize size = image.size;
// 如果图片的宽大于220，size的宽就等于220，size的高度等于原来的高度与原来的宽度的比例乘以220
if (size.width > ) {
size.height /= (size.width/);
size.width = ;
}
// 根据size的大小初始化imageView
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(, , size.width, size.height)];
imageView.image = image;
//设置imageView的圆角半径
imageView.layer.cornerRadius = 5.0;
imageView.layer.masksToBounds = YES;
UIEdgeInsets insets = (type == ChatTypeMine ? imageInsetsMine : imageInsetsSomeone);
return [self initWithView:imageView date:date type:type andUser:_user insets:insets];
} + (id)dataWithView:(UIView *)view date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user insets:(UIEdgeInsets)insets
{
return [[YXYCChatData alloc] initWithView:view date:date type:type andUser:(YXYCChatUser *)_user insets:insets];
}
/**
* 初始化
*
* @param view view
* @param date 日期
* @param type 聊天对象的类型
* @param _user 用户
* @param insets
*
* @return YXYCChatData对象类型
*/
- (id)initWithView:(UIView *)view date:(NSDate *)date type:(YXYCChatType)type andUser:(YXYCChatUser *)_user insets:(UIEdgeInsets)insets
{
self = [super init];
if (self) {
_chatUser = _user;
_view = view;
_date = date;
_type = type;
_insets = insets;
}
return self;
} @end
#import <UIKit/UIKit.h> @interface YXYCChatHeaderTableViewCell : UITableViewCell
/**
* 日期
*/
@property (nonatomic, strong) NSDate *date;
+ (CGFloat)height; @end
#import "YXYCChatHeaderTableViewCell.h" @interface YXYCChatHeaderTableViewCell() @property (nonatomic, retain) UILabel *label; @end @implementation YXYCChatHeaderTableViewCell + (CGFloat)height
{
return 30.0;
}
/**
* 设置时间，并把时间显示在YXYCChatHeaderTableViewCell上
*/
- (void)setDate:(NSDate *)value
{
// 初始化dateFormatter
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
// 设置日期显示的方式
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
// 设置时间显示的方式
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
NSString *text = [dateFormatter stringFromDate:value]; if (self.label) {
self.label.text = text;
return;
}
self.selectionStyle = UITableViewCellSelectionStyleNone;
// 初始化UILabel
self.label = [[UILabel alloc] initWithFrame:CGRectMake(, , self.frame.size.width, [YXYCChatHeaderTableViewCell height])];
//设置Label的文本内容
self.label.text = text;
// 设置Label文本字体的大小
self.label.font = [UIFont boldSystemFontOfSize:];
// Label文本居中
self.label.textAlignment = NSTextAlignmentCenter;
// 设置Label文字的阴影偏余量
self.label.shadowOffset = CGSizeMake(, );
// 设置Label文字阴影的颜色
self.label.shadowColor = [UIColor whiteColor];
// 设置Label文件的颜色
self.label.textColor = [UIColor darkGrayColor];
// 设置Label的背景颜色
self.label.backgroundColor = [UIColor clearColor];
[self addSubview:self.label];
} - (void)awakeFromNib {
// Initialization code
} - (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated]; // Configure the view for the selected state
} @end
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface YXYCChatUser : NSObject
/**
* 用户名字
*/
@property (nonatomic, strong) NSString *username;
/**
* 头像
*/
@property (nonatomic, strong) UIImage *avatar;
/**
* 初始化
*
* @param user 用户
* @param image 头像
*
* @return 返回id类型
*/
- (id)initWithUsername:(NSString *)user avatarImage:(UIImage *)image; @end
#import "YXYCChatUser.h" @implementation YXYCChatUser @synthesize avatar;
@synthesize username; - (id)initWithUsername:(NSString *)user avatarImage:(UIImage *)image
{
self = [super init];
if (self) {
self.avatar = [image copy];
self.username = [user copy];
}
return self;
} @end
#import <UIKit/UIKit.h>
#import "YXYCChatData.h" @interface YXYCChatTableViewCell : UITableViewCell
/**
* 日期
*/
@property (nonatomic, strong) YXYCChatData *data;
/**
* 设置日期
*/
- (void)setData:(YXYCChatData *)data; @end
#import "YXYCChatTableViewCell.h"
#import "YXYCChatData.h"
#import <QuartzCore/QuartzCore.h>
#import "YXYCChatUser.h" @interface YXYCChatTableViewCell () @property (nonatomic, retain) UIView *customView;
@property (nonatomic, retain) UIImageView *bubbleImage;
/**
* 头像
*/
@property (nonatomic, retain) UIImageView *avatarImage; //- (void)setupInternalData; @end @implementation YXYCChatTableViewCell @synthesize data = _data; - (void)setData:(YXYCChatData *)data
{
_data = data;
[self rebuildUserInterface];
} - (void)rebuildUserInterface
{
self.selectionStyle = UITableViewCellSelectionStyleNone;
// 如果bubbleImage为空，则创建
if (!self.bubbleImage) {
self.bubbleImage = [[UIImageView alloc] init];
[self addSubview:self.bubbleImage];
}
YXYCChatType type = self.data.type;
CGFloat width = self.data.view.frame.size.width;
CGFloat height = self.data.view.frame.size.height;
CGFloat x = (type == ChatTypeSomeone) ? : self.frame.size.width - width - self.data.insets.left - self.data.insets.right;
CGFloat y = ;
// 如果用户有头像，则显示头像
if (self.data.chatUser) {
YXYCChatUser *thisUser = self.data.chatUser;
[self.avatarImage removeFromSuperview];
self.avatarImage = [[UIImageView alloc] initWithImage:(thisUser.avatar ? thisUser.avatar : [UIImage imageNamed:@"noavatar.png"])];
self.avatarImage.layer.cornerRadius = 9.0;
self.avatarImage.layer.masksToBounds = YES;
// 设置avatarImage的边框颜色
self.avatarImage.layer.borderColor = [UIColor colorWithWhite:0.0 alpha:0.2].CGColor;
// 设置avatarImage边框的粗细
self.avatarImage.layer.borderWidth = 1.0;
// 计算x的位置
CGFloat avatarX = (type == ChatTypeSomeone) ? : self.frame.size.width - ;
CGFloat avatarY = self.frame.size.height - ;
//设计frame
self.avatarImage.frame = CGRectMake(avatarX, avatarY, , );
[self addSubview:self.avatarImage];
CGFloat delta = self.frame.size.height - (self.data.insets.top + self.data.insets.bottom + self.data.view.frame.size.height);
if (delta > ) y = delta;
if (type == ChatTypeSomeone) x += ;
if (type == ChatTypeMine) x -= ;
}
[self.customView removeFromSuperview];
self.customView = self.data.view;
self.customView.frame = CGRectMake(x + self.data.insets.left, y + self.data.insets.top, width, height);
[self.contentView addSubview:self.customView];
//
if (type == ChatTypeSomeone) {
//创建一个内容可拉伸，而边角不拉伸的图片，需要两个参数，第一个是左边不拉伸区域的宽度，第二个参数是上面不拉伸的高度。
self.bubbleImage.image = [[UIImage imageNamed:@"yoububble.png"] stretchableImageWithLeftCapWidth: topCapHeight:];
}else{
self.bubbleImage.image = [[UIImage imageNamed:@"mebubble.png"] stretchableImageWithLeftCapWidth: topCapHeight:];
}
self.bubbleImage.frame = CGRectMake(x, y, width + self.data.insets.left + self.data.insets.right, height + self.data.insets.top + self.data.insets.bottom);
} //- (void)setUP:(YXYCChatData *)value
//{
// self.data = value;
// [self rebuildUserInterface];
//} - (void)setFrame:(CGRect)frame
{
[super setFrame:frame];
[self rebuildUserInterface];
} - (void)awakeFromNib {
// Initialization code
} - (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated]; // Configure the view for the selected state
} @end
#import <UIKit/UIKit.h>
#import "YXYCChatTableViewDataSource.h"
#import "YXYCChatTableViewCell.h" typedef enum _ChatBubbleTypingType
{
ChatBubbleTypingTypeNobody = ,
ChatBubbleTypingTypeMe = ,
ChatBubbleTypingTypeSomebody =
} ChatBubbleTypingType; @interface YXYCChatTableView : UITableView
/**
* 添加代理
*/
@property (nonatomic, assign) id<YXYCChatTableViewDataSource> chatDataSource;
/**
* 时间间隔
*/
@property (nonatomic) NSTimeInterval snapInterval;
@property (nonatomic) ChatBubbleTypingType typingBubble; @end
#import "YXYCChatTableView.h"
#import "YXYCChatData.h"
#import "YXYCChatHeaderTableViewCell.h" @interface YXYCChatTableView ()<UITableViewDelegate,UITableViewDataSource> @property (nonatomic, strong) NSMutableArray *bubbleSection; @end @implementation YXYCChatTableView - (id)init
{
self = [super init];
if (self) [self initializer];
return self;
} - (void)initializer
{
self.backgroundColor = [UIColor clearColor];
// 隐藏cell与cell之间的分离线
self.separatorStyle = UITableViewCellSeparatorStyleNone;
// 设置代理
self.delegate = self;
self.dataSource = self;
self.snapInterval = * * ;//一天的时间
self.typingBubble = ChatBubbleTypingTypeNobody;
} - (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) [self initializer];
return self;
} - (id)initWithFrame:(CGRect)frame style:(UITableViewStyle)style
{
self = [super initWithFrame:frame style:UITableViewStylePlain];
if (self) {
[self initializer];
}
return self;
} #pragma mark - 重写tableView的部分方法-
- (void)reloadData
{
self.showsHorizontalScrollIndicator = NO;
self.showsVerticalScrollIndicator = NO;
self.bubbleSection = nil;
int count = ;
self.bubbleSection = [[NSMutableArray alloc] init];
if (self.chatDataSource && (count = (int)[self.chatDataSource rowsForChatTable:self]) > ) {
NSMutableArray *bubbleData = [[NSMutableArray alloc] initWithCapacity:count];
for (int i = ; i < count; i++) {
NSObject *object = [self.chatDataSource chatTableView:self dataForRow:i];
assert([object isKindOfClass:[YXYCChatData class]]);
[bubbleData addObject:object];
}
// 根据时间进行排列
[bubbleData sortUsingComparator:^NSComparisonResult(id obj1, id obj2) {
YXYCChatData *bubbleData1 = (YXYCChatData *)obj1;
YXYCChatData *bubbleData2 = (YXYCChatData *)obj2;
return [bubbleData1.date compare:bubbleData2.date];
}];
// 以GMT时间的偏移秒数来初始化
NSDate *last = [NSDate dateWithTimeIntervalSince1970:];
NSMutableArray *currentSection = nil;
for (int i = ; i < count; i++) {
YXYCChatData *data = (YXYCChatData *)[bubbleData objectAtIndex:i];
// 如果时间大于一天的时间就存入self.bubbleSection（用于分区）
if ([data.date timeIntervalSinceDate:last] > self.snapInterval) {
currentSection = [[NSMutableArray alloc] init];
[self.bubbleSection addObject:currentSection];
}
[currentSection addObject:data];
last = data.date;
}
}
[super reloadData];
} - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
int result = (int)[self.bubbleSection count];
if (self.typingBubble != ChatBubbleTypingTypeNobody) {
result ++;
}
return result;
} - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (section >= [self.bubbleSection count]) {
return ;
}
return [[self.bubbleSection objectAtIndex:section] count] + ;
} - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Header
if (indexPath.row == ) {
return [YXYCChatHeaderTableViewCell height];
}
YXYCChatData *data = [[self.bubbleSection objectAtIndex:indexPath.section] objectAtIndex:indexPath.row - ];
return MAX(data.insets.top + data.view.frame.size.height + data.insets.bottom, );
} - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//Header based on snapInterval
if (indexPath.row == ) {
static NSString *cellId = @"HeaderCell";
YXYCChatHeaderTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellId];
YXYCChatData *data = [[self.bubbleSection objectAtIndex:indexPath.section] objectAtIndex:];
if (cell == nil) {
cell = [[YXYCChatHeaderTableViewCell alloc] init];
}
cell.date = data.date;
return cell;
}
//Standard
static NSString * cellId = @"ChatCell";
YXYCChatTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellId];
YXYCChatData *data = [[self.bubbleSection objectAtIndex:indexPath.section] objectAtIndex:indexPath.row - ];
if (cell == nil) {
cell = [[YXYCChatTableViewCell alloc] init];
}
cell.data = data;
return cell;
} @end