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020606-07-聊天布局
// XMGChatingViewController.m// 07-聊天布局#import "XMGChatingViewController.h"#import "XMGMessage.h"#import "XMGMessageCell.h"//#import "XMGMeCell.h"//#import "XMGOtherCell.h"@interface XMGChatingViewController () <UITableViewDataSource, UITableViewDelegate>@property (nonatomic, strong) NSArray *messages;@property (weak, nonatomic) IBOutlet UITextField *messageField;@end@implementation XMGChatingViewController- (NSArray *)messages{ if (_messages == nil) { // 加载plist中的字典数组 NSString *path = [[NSBundle mainBundle] pathForResource:@"messages.plist" ofType:nil]; NSArray *dictArray = [NSArray arrayWithContentsOfFile:path]; // 字典数组 -> 模型数组 NSMutableArray *messageArray = [NSMutableArray array]; // 用来记录上一条消息模型 XMGMessage *lastMessage = nil; for (NSDictionary *dict in dictArray) { XMGMessage *message = [XMGMessage messageWithDict:dict]; message.hideTime = [message.time isEqualToString:lastMessage.time]; [messageArray addObject:message]; lastMessage = message; } _messages = messageArray; } return _messages;}- (void)viewDidLoad { [super viewDidLoad]; // 设置文本框左边的内容 UIView *leftView = [[UIView alloc] init]; leftView.frame = CGRectMake(0, 0, 10, 0); self.messageField.leftView = leftView; self.messageField.leftViewMode = UITextFieldViewModeAlways; // 监听键盘通知 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil];}- (void)dealloc{ [[NSNotificationCenter defaultCenter] removeObserver:self];}#pragma mark - 键盘处理- (void)keyboardWillChangeFrame:(NSNotification *)note { // 取出键盘最终的frame CGRect rect = [note.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue]; // 取出键盘弹出需要花费的时间 double duration = [note.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; // 修改transform [UIView animateWithDuration:duration animations:^{ CGFloat ty = [UIScreen mainScreen].bounds.size.height - rect.origin.y; self.view.transform = CGAffineTransformMakeTranslation(0, - ty); }];}#pragma mark - <UITableViewDataSource>- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ return self.messages.count;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ // 取出模型 XMGMessage *msg = self.messages[indexPath.row]; // 重用标识（决定了cell的类型） NSString *ID = (msg.type == XMGMessageTypeMe) ? @"me" : @"other"; // 加载cell XMGMessageCell *cell = [tableView dequeueReusableCellWithIdentifier:ID]; cell.message = msg; return cell; // if (msg.type == XMGMessageTypeMe) {// static NSString *ID = @"me";// // 加载cell// XMGMeCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];// // cell.message = msg;// // return cell;// } else {// static NSString *ID = @"other";// // 加载cell// XMGOtherCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];// // cell.message = msg;// // return cell;// }}#pragma mark - <UITableViewDelegate>- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath{ return 200;}- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{ XMGMessage *message = self.messages[indexPath.row]; return message.cellHeight;}- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{ // 退出键盘// [self.messageField resignFirstResponder];// [self.messageField endEditing:YES]; [self.view endEditing:YES];}@end
// XMGMessageCell.h// 07-聊天布局#import <UIKit/UIKit.h>@class XMGMessage;@interface XMGMessageCell : UITableViewCell@property (nonatomic, strong) XMGMessage *message;@end
// XMGMessageCell.m// 07-聊天布局#import "XMGMessageCell.h"#import "XMGMessage.h"//define this constant if you want to use Masonry without the ‘mas_‘ prefix#define MAS_SHORTHAND//define this constant if you want to enable auto-boxing for default syntax#define MAS_SHORTHAND_GLOBALS#import "Masonry.h"@interface XMGMessageCell()@property (weak, nonatomic) IBOutlet UILabel *timeLabel;@property (weak, nonatomic) IBOutlet UIButton *textButton;@property (weak, nonatomic) IBOutlet UIImageView *iconView;@end@implementation XMGMessageCell- (void)awakeFromNib{ self.textButton.titleLabel.numberOfLines = 0;}- (void)setMessage:(XMGMessage *)message{ _message = message; // 时间处理 if (message.hideTime) { // 隐藏时间 self.timeLabel.hidden = YES; [self.timeLabel updateConstraints:^(MASConstraintMaker *make) { make.height.equalTo(0); }]; } else { // 显示时间 self.timeLabel.text = message.time; self.timeLabel.hidden = NO; [self.timeLabel updateConstraints:^(MASConstraintMaker *make) { make.height.equalTo(21); }]; } // 处理显示的消息文字 // 设置按钮的文字 [self.textButton setTitle:self.message.text forState:UIControlStateNormal]; // 强制更新 [self layoutIfNeeded]; // 设置按钮的高度就是titleLabel的高度 [self.textButton updateConstraints:^(MASConstraintMaker *make) { CGFloat buttonH = self.textButton.titleLabel.frame.size.height + 30; make.height.equalTo(buttonH); }]; // 强制更新 [self layoutIfNeeded]; // 计算当前cell的高度 CGFloat buttonMaxY = CGRectGetMaxY(self.textButton.frame); CGFloat iconMaxY = CGRectGetMaxY(self.iconView.frame); self.message.cellHeight = MAX(buttonMaxY, iconMaxY) + 10;}@end
// XMGMeCell.h// 07-聊天布局#import <UIKit/UIKit.h>@class XMGMessage;@interface XMGMeCell : UITableViewCell@property (nonatomic, strong) XMGMessage *message;@end
// XMGMeCell.m// 07-聊天布局#import "XMGMeCell.h"#import "XMGMessage.h"//define this constant if you want to use Masonry without the ‘mas_‘ prefix#define MAS_SHORTHAND//define this constant if you want to enable auto-boxing for default syntax#define MAS_SHORTHAND_GLOBALS#import "Masonry.h"@interface XMGMeCell()@property (weak, nonatomic) IBOutlet UILabel *timeLabel;@property (weak, nonatomic) IBOutlet UIButton *textButton;@property (weak, nonatomic) IBOutlet UIImageView *iconView;@end@implementation XMGMeCell- (void)awakeFromNib{ self.textButton.titleLabel.numberOfLines = 0;}- (void)setMessage:(XMGMessage *)message{ _message = message; // 时间处理 if (message.hideTime) { // 隐藏时间 self.timeLabel.hidden = YES; [self.timeLabel updateConstraints:^(MASConstraintMaker *make) { make.height.equalTo(0); }]; } else { // 显示时间 self.timeLabel.text = message.time; self.timeLabel.hidden = NO; [self.timeLabel updateConstraints:^(MASConstraintMaker *make) { make.height.equalTo(21); }]; } // 处理显示的消息文字 // 设置按钮的文字 [self.textButton setTitle:self.message.text forState:UIControlStateNormal]; // 强制更新 [self.textButton layoutIfNeeded]; // 设置按钮的高度就是titleLabel的高度 [self.textButton updateConstraints:^(MASConstraintMaker *make) { CGFloat buttonH = self.textButton.titleLabel.frame.size.height + 30; make.height.equalTo(buttonH); }]; // 强制更新 [self.textButton layoutIfNeeded]; // 计算当前cell的高度 CGFloat buttonMaxY = CGRectGetMaxY(self.textButton.frame); CGFloat iconMaxY = CGRectGetMaxY(self.iconView.frame); self.message.cellHeight = MAX(buttonMaxY, iconMaxY) + 10;}@end
// XMGOtherCell.h// 07-聊天布局#import <UIKit/UIKit.h>@class XMGMessage;@interface XMGOtherCell : UITableViewCell@property (nonatomic, strong) XMGMessage *message;@end
// XMGOtherCell.m// 07-聊天布#import "XMGOtherCell.h"#import "XMGMessage.h"//define this constant if you want to use Masonry without the ‘mas_‘ prefix#define MAS_SHORTHAND//define this constant if you want to enable auto-boxing for default syntax#define MAS_SHORTHAND_GLOBALS#import "Masonry.h"@interface XMGOtherCell()@property (weak, nonatomic) IBOutlet UILabel *timeLabel;@property (weak, nonatomic) IBOutlet UIButton *textButton;@property (weak, nonatomic) IBOutlet UIImageView *iconView;@end@implementation XMGOtherCell- (void)awakeFromNib{ self.textButton.titleLabel.numberOfLines = 0;}- (void)setMessage:(XMGMessage *)message{ _message = message; // 时间处理 if (message.hideTime) { // 隐藏时间 self.timeLabel.hidden = YES; [self.timeLabel updateConstraints:^(MASConstraintMaker *make) { make.height.equalTo(0); }]; } else { // 显示时间 self.timeLabel.text = message.time; self.timeLabel.hidden = NO; [self.timeLabel updateConstraints:^(MASConstraintMaker *make) { make.height.equalTo(21); }]; } // 处理显示的消息文字 // 设置按钮的文字 [self.textButton setTitle:self.message.text forState:UIControlStateNormal]; // 强制更新 [self.textButton layoutIfNeeded]; // 设置按钮的高度就是titleLabel的高度 [self.textButton updateConstraints:^(MASConstraintMaker *make) { CGFloat buttonH = self.textButton.titleLabel.frame.size.height + 30; make.height.equalTo(buttonH); }]; // 强制更新 [self.textButton layoutIfNeeded]; // 计算当前cell的高度 CGFloat buttonMaxY = CGRectGetMaxY(self.textButton.frame); CGFloat iconMaxY = CGRectGetMaxY(self.iconView.frame); self.message.cellHeight = MAX(buttonMaxY, iconMaxY) + 10;}@end
// XMGMessage.h// 07-聊天布局#import <UIKit/UIKit.h>typedef enum { XMGMessageTypeMe = 0, XMGMessageTypeOther = 1} XMGMessageType;@interface XMGMessage : NSObject@property (nonatomic, strong) NSString *text;@property (nonatomic, strong) NSString *time;@property (nonatomic, assign) XMGMessageType type;/** cell的高度 */@property (nonatomic, assign) CGFloat cellHeight;/** 是否隐藏时间 */@property (nonatomic, assign, getter=isHideTime) BOOL hideTime;+ (instancetype)messageWithDict:(NSDictionary *)dict;@end
// XMGMessage.m// 07-聊天布局#import "XMGMessage.h"@implementation XMGMessage+ (instancetype)messageWithDict:(NSDictionary *)dict{ XMGMessage *message = [[self alloc] init]; [message setValuesForKeysWithDictionary:dict]; return message;}@end
020606-07-聊天布局
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