添加评论
This commit is contained in:
@@ -6,15 +6,610 @@
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//
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#import "KBAICommentView.h"
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#import "KBAICommentFooterView.h"
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#import "KBAICommentHeaderView.h"
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#import "KBAICommentInputView.h"
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#import "KBAICommentModel.h"
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#import "KBAIReplyCell.h"
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#import "KBAIReplyModel.h"
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#import <MJExtension/MJExtension.h>
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#import <Masonry/Masonry.h>
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static NSString *const kCommentHeaderIdentifier = @"CommentHeader";
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static NSString *const kReplyCellIdentifier = @"ReplyCell";
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static NSString *const kCommentFooterIdentifier = @"CommentFooter";
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/// 每次展开的回复数量
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static NSInteger const kRepliesLoadCount = 3;
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@interface KBAICommentView () <UITableViewDataSource, UITableViewDelegate>
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@property(nonatomic, strong) UIView *headerView;
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@property(nonatomic, strong) UILabel *titleLabel;
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@property(nonatomic, strong) UIButton *closeButton;
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@property(nonatomic, strong) UITableView *tableView;
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@property(nonatomic, strong) KBAICommentInputView *inputView;
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@property(nonatomic, strong) NSMutableArray<KBAICommentModel *> *comments;
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@property(nonatomic, assign) NSInteger totalCommentCount;
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/// 键盘高度
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@property(nonatomic, assign) CGFloat keyboardHeight;
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/// 输入框底部约束
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@property(nonatomic, strong) MASConstraint *inputBottomConstraint;
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@end
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@implementation KBAICommentView
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/*
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// Only override drawRect: if you perform custom drawing.
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// An empty implementation adversely affects performance during animation.
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- (void)drawRect:(CGRect)rect {
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// Drawing code
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#pragma mark - Lifecycle
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- (instancetype)initWithFrame:(CGRect)frame {
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self = [super initWithFrame:frame];
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if (self) {
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self.comments = [NSMutableArray array];
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[self setupUI];
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[self setupKeyboardObservers];
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[self loadComments];
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}
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return self;
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}
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- (void)dealloc {
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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}
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#pragma mark - UI Setup
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- (void)setupUI {
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self.backgroundColor = [UIColor whiteColor];
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self.layer.cornerRadius = 12;
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self.layer.maskedCorners = kCALayerMinXMinYCorner | kCALayerMaxXMinYCorner;
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self.clipsToBounds = YES;
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[self addSubview:self.headerView];
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[self.headerView addSubview:self.titleLabel];
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[self.headerView addSubview:self.closeButton];
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[self addSubview:self.tableView];
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[self addSubview:self.inputView];
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[self.headerView mas_makeConstraints:^(MASConstraintMaker *make) {
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make.top.left.right.equalTo(self);
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make.height.mas_equalTo(50);
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}];
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[self.titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
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make.center.equalTo(self.headerView);
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}];
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[self.closeButton mas_makeConstraints:^(MASConstraintMaker *make) {
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make.right.equalTo(self.headerView).offset(-16);
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make.centerY.equalTo(self.headerView);
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make.width.height.mas_equalTo(30);
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}];
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[self.inputView mas_makeConstraints:^(MASConstraintMaker *make) {
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make.left.right.equalTo(self);
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make.height.mas_equalTo(50);
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self.inputBottomConstraint = make.bottom.equalTo(self);
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}];
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[self.tableView mas_makeConstraints:^(MASConstraintMaker *make) {
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make.top.equalTo(self.headerView.mas_bottom);
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make.left.right.equalTo(self);
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make.bottom.equalTo(self.inputView.mas_top);
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}];
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}
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#pragma mark - Keyboard Observers
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- (void)setupKeyboardObservers {
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[[NSNotificationCenter defaultCenter]
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addObserver:self
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selector:@selector(keyboardWillShow:)
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name:UIKeyboardWillShowNotification
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object:nil];
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[[NSNotificationCenter defaultCenter]
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addObserver:self
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selector:@selector(keyboardWillHide:)
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name:UIKeyboardWillHideNotification
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object:nil];
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}
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- (void)keyboardWillShow:(NSNotification *)notification {
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CGRect keyboardFrame =
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[notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
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NSTimeInterval duration =
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[notification.userInfo[UIKeyboardAnimationDurationUserInfoKey]
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doubleValue];
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self.keyboardHeight = keyboardFrame.size.height;
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[self.inputBottomConstraint uninstall];
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[self.inputView mas_updateConstraints:^(MASConstraintMaker *make) {
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self.inputBottomConstraint =
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make.bottom.equalTo(self).offset(-self.keyboardHeight);
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}];
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[UIView animateWithDuration:duration
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animations:^{
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[self layoutIfNeeded];
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}];
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}
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- (void)keyboardWillHide:(NSNotification *)notification {
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NSTimeInterval duration =
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[notification.userInfo[UIKeyboardAnimationDurationUserInfoKey]
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doubleValue];
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self.keyboardHeight = 0;
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[self.inputBottomConstraint uninstall];
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[self.inputView mas_updateConstraints:^(MASConstraintMaker *make) {
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self.inputBottomConstraint = make.bottom.equalTo(self);
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}];
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[UIView animateWithDuration:duration
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animations:^{
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[self layoutIfNeeded];
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}];
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}
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#pragma mark - Data Loading
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- (void)loadComments {
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NSString *filePath = [[NSBundle mainBundle] pathForResource:@"comments_mock"
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ofType:@"json"];
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if (!filePath) {
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NSLog(@"[KBAICommentView] comments_mock.json not found");
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return;
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}
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NSData *data = [NSData dataWithContentsOfFile:filePath];
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if (!data) {
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NSLog(@"[KBAICommentView] Failed to read comments_mock.json");
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return;
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}
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NSError *error;
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NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data
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options:0
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error:&error];
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if (error) {
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NSLog(@"[KBAICommentView] JSON parse error: %@", error);
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return;
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}
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self.totalCommentCount = [json[@"totalCount"] integerValue];
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NSArray *commentsArray = json[@"comments"];
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[self.comments removeAllObjects];
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for (NSDictionary *dict in commentsArray) {
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KBAICommentModel *comment = [KBAICommentModel mj_objectWithKeyValues:dict];
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[self.comments addObject:comment];
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}
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[self updateTitle];
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[self.tableView reloadData];
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}
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- (void)updateTitle {
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NSString *countText;
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if (self.totalCommentCount >= 10000) {
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countText = [NSString
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stringWithFormat:@"%.1fw条评论", self.totalCommentCount / 10000.0];
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} else {
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countText =
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[NSString stringWithFormat:@"%ld条评论", (long)self.totalCommentCount];
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}
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self.titleLabel.text = countText;
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}
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#pragma mark - UITableViewDataSource
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- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
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return self.comments.count;
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}
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- (NSInteger)tableView:(UITableView *)tableView
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numberOfRowsInSection:(NSInteger)section {
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KBAICommentModel *comment = self.comments[section];
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return comment.displayedReplies.count;
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}
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- (UITableViewCell *)tableView:(UITableView *)tableView
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cellForRowAtIndexPath:(NSIndexPath *)indexPath {
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KBAIReplyCell *cell =
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[tableView dequeueReusableCellWithIdentifier:kReplyCellIdentifier
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forIndexPath:indexPath];
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KBAICommentModel *comment = self.comments[indexPath.section];
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KBAIReplyModel *reply = comment.displayedReplies[indexPath.row];
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[cell configureWithReply:reply];
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__weak typeof(self) weakSelf = self;
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cell.onLikeAction = ^{
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// TODO: 处理点赞逻辑
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reply.isLiked = !reply.isLiked;
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reply.likeCount += reply.isLiked ? 1 : -1;
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[weakSelf.tableView reloadRowsAtIndexPaths:@[ indexPath ]
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withRowAnimation:UITableViewRowAnimationNone];
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};
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return cell;
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}
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#pragma mark - UITableViewDelegate
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- (UIView *)tableView:(UITableView *)tableView
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viewForHeaderInSection:(NSInteger)section {
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KBAICommentHeaderView *header = [tableView
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dequeueReusableHeaderFooterViewWithIdentifier:kCommentHeaderIdentifier];
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KBAICommentModel *comment = self.comments[section];
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[header configureWithComment:comment];
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__weak typeof(self) weakSelf = self;
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header.onLikeAction = ^{
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// TODO: 处理点赞逻辑
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comment.isLiked = !comment.isLiked;
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comment.likeCount += comment.isLiked ? 1 : -1;
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[weakSelf.tableView reloadSections:[NSIndexSet indexSetWithIndex:section]
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withRowAnimation:UITableViewRowAnimationNone];
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};
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return header;
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}
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- (UIView *)tableView:(UITableView *)tableView
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viewForFooterInSection:(NSInteger)section {
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KBAICommentModel *comment = self.comments[section];
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KBAIReplyFooterState state = [comment footerState];
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// 无二级评论时返回空视图
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if (state == KBAIReplyFooterStateHidden) {
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NSLog(@"[KBAICommentView] footer hidden section=%ld", (long)section);
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return nil;
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}
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KBAICommentFooterView *footer = [tableView
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dequeueReusableHeaderFooterViewWithIdentifier:kCommentFooterIdentifier];
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[footer configureWithComment:comment];
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__weak typeof(self) weakSelf = self;
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footer.onAction = ^{
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[weakSelf handleFooterActionForSection:section];
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};
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return footer;
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}
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- (CGFloat)tableView:(UITableView *)tableView
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heightForHeaderInSection:(NSInteger)section {
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return UITableViewAutomaticDimension;
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}
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- (CGFloat)tableView:(UITableView *)tableView
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heightForFooterInSection:(NSInteger)section {
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KBAICommentModel *comment = self.comments[section];
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KBAIReplyFooterState state = [comment footerState];
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if (state == KBAIReplyFooterStateHidden) {
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return CGFLOAT_MIN;
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}
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return 30;
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}
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- (CGFloat)tableView:(UITableView *)tableView
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estimatedHeightForHeaderInSection:(NSInteger)section {
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return 100;
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}
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- (CGFloat)tableView:(UITableView *)tableView
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estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {
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return 60;
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}
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#pragma mark - Footer Actions
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- (void)handleFooterActionForSection:(NSInteger)section {
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KBAICommentModel *comment = self.comments[section];
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KBAIReplyFooterState state = [comment footerState];
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switch (state) {
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case KBAIReplyFooterStateExpand:
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case KBAIReplyFooterStateLoadMore: {
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[self loadMoreRepliesForSection:section];
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break;
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}
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case KBAIReplyFooterStateCollapse: {
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[self collapseRepliesForSection:section];
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break;
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}
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default:
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break;
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}
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}
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- (void)loadMoreRepliesForSection:(NSInteger)section {
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KBAICommentModel *comment = self.comments[section];
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NSInteger currentCount = comment.displayedReplies.count;
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NSDictionary *anchor = [self captureHeaderAnchorForSection:section];
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NSLog(@"[KBAICommentView] loadMore(before) section=%ld offsetY=%.2f contentSizeH=%.2f boundsH=%.2f rows=%ld",
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(long)section,
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self.tableView.contentOffset.y,
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self.tableView.contentSize.height,
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self.tableView.bounds.size.height,
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(long)currentCount);
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// 加载更多
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[comment loadMoreReplies:kRepliesLoadCount];
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// 计算新增的行
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NSInteger newCount = comment.displayedReplies.count;
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NSMutableArray *insertIndexPaths = [NSMutableArray array];
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for (NSInteger i = currentCount; i < newCount; i++) {
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[insertIndexPaths addObject:[NSIndexPath indexPathForRow:i
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inSection:section]];
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}
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// 更新（避免动画导致跳动）
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[UIView performWithoutAnimation:^{
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[self.tableView beginUpdates];
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if (insertIndexPaths.count > 0) {
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[self.tableView insertRowsAtIndexPaths:insertIndexPaths
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withRowAnimation:UITableViewRowAnimationNone];
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}
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[self.tableView endUpdates];
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[self.tableView layoutIfNeeded];
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[self restoreHeaderAnchor:anchor];
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}];
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NSLog(@"[KBAICommentView] loadMore(after) section=%ld offsetY=%.2f contentSizeH=%.2f boundsH=%.2f rows=%ld",
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(long)section,
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self.tableView.contentOffset.y,
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self.tableView.contentSize.height,
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self.tableView.bounds.size.height,
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(long)comment.displayedReplies.count);
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dispatch_async(dispatch_get_main_queue(), ^{
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NSLog(@"[KBAICommentView] loadMore(next) section=%ld offsetY=%.2f contentSizeH=%.2f boundsH=%.2f viewBoundsH=%.2f",
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(long)section,
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self.tableView.contentOffset.y,
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self.tableView.contentSize.height,
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self.tableView.bounds.size.height,
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self.bounds.size.height);
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});
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// 手动刷新 Footer（避免使用 reloadSections 导致滚动）
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KBAICommentFooterView *footerView =
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(KBAICommentFooterView *)[self.tableView footerViewForSection:section];
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if (footerView) {
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[footerView configureWithComment:comment];
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}
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}
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- (void)collapseRepliesForSection:(NSInteger)section {
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KBAICommentModel *comment = self.comments[section];
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NSInteger rowCount = comment.displayedReplies.count;
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NSDictionary *anchor = [self captureHeaderAnchorForSection:section];
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NSLog(@"[KBAICommentView] collapse(before) section=%ld offsetY=%.2f contentSizeH=%.2f boundsH=%.2f rows=%ld",
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(long)section,
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self.tableView.contentOffset.y,
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self.tableView.contentSize.height,
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self.tableView.bounds.size.height,
|
||||
(long)rowCount);
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// 计算要删除的行
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NSMutableArray *deleteIndexPaths = [NSMutableArray array];
|
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for (NSInteger i = 0; i < rowCount; i++) {
|
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[deleteIndexPaths addObject:[NSIndexPath indexPathForRow:i
|
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inSection:section]];
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}
|
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|
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// 收起回复
|
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[comment collapseReplies];
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|
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// 删除行（避免动画导致跳动）
|
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[UIView performWithoutAnimation:^{
|
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[self.tableView beginUpdates];
|
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if (deleteIndexPaths.count > 0) {
|
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[self.tableView deleteRowsAtIndexPaths:deleteIndexPaths
|
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withRowAnimation:UITableViewRowAnimationNone];
|
||||
}
|
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[self.tableView endUpdates];
|
||||
[self.tableView layoutIfNeeded];
|
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[self restoreHeaderAnchor:anchor];
|
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}];
|
||||
|
||||
NSLog(@"[KBAICommentView] collapse(after) section=%ld offsetY=%.2f contentSizeH=%.2f boundsH=%.2f rows=%ld",
|
||||
(long)section,
|
||||
self.tableView.contentOffset.y,
|
||||
self.tableView.contentSize.height,
|
||||
self.tableView.bounds.size.height,
|
||||
(long)comment.displayedReplies.count);
|
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dispatch_async(dispatch_get_main_queue(), ^{
|
||||
NSLog(@"[KBAICommentView] collapse(next) section=%ld offsetY=%.2f contentSizeH=%.2f boundsH=%.2f viewBoundsH=%.2f",
|
||||
(long)section,
|
||||
self.tableView.contentOffset.y,
|
||||
self.tableView.contentSize.height,
|
||||
self.tableView.bounds.size.height,
|
||||
self.bounds.size.height);
|
||||
});
|
||||
|
||||
// 手动刷新 Footer（避免使用 reloadSections 导致滚动）
|
||||
KBAICommentFooterView *footerView =
|
||||
(KBAICommentFooterView *)[self.tableView footerViewForSection:section];
|
||||
if (footerView) {
|
||||
[footerView configureWithComment:comment];
|
||||
}
|
||||
}
|
||||
|
||||
#pragma mark - Actions
|
||||
|
||||
- (void)closeButtonTapped {
|
||||
// 关闭评论视图（由外部处理）
|
||||
[[NSNotificationCenter defaultCenter]
|
||||
postNotificationName:@"KBAICommentViewCloseNotification"
|
||||
object:nil];
|
||||
}
|
||||
|
||||
#pragma mark - Lazy Loading
|
||||
|
||||
- (UIView *)headerView {
|
||||
if (!_headerView) {
|
||||
_headerView = [[UIView alloc] init];
|
||||
_headerView.backgroundColor = [UIColor whiteColor];
|
||||
}
|
||||
return _headerView;
|
||||
}
|
||||
|
||||
- (UILabel *)titleLabel {
|
||||
if (!_titleLabel) {
|
||||
_titleLabel = [[UILabel alloc] init];
|
||||
_titleLabel.font = [UIFont systemFontOfSize:15 weight:UIFontWeightMedium];
|
||||
_titleLabel.textColor = [UIColor labelColor];
|
||||
_titleLabel.text = @"0条评论";
|
||||
}
|
||||
return _titleLabel;
|
||||
}
|
||||
|
||||
- (UIButton *)closeButton {
|
||||
if (!_closeButton) {
|
||||
_closeButton = [UIButton buttonWithType:UIButtonTypeCustom];
|
||||
[_closeButton setImage:[UIImage systemImageNamed:@"xmark"]
|
||||
forState:UIControlStateNormal];
|
||||
_closeButton.tintColor = [UIColor labelColor];
|
||||
[_closeButton addTarget:self
|
||||
action:@selector(closeButtonTapped)
|
||||
forControlEvents:UIControlEventTouchUpInside];
|
||||
}
|
||||
return _closeButton;
|
||||
}
|
||||
|
||||
- (UITableView *)tableView {
|
||||
if (!_tableView) {
|
||||
_tableView = [[UITableView alloc] initWithFrame:CGRectZero
|
||||
style:UITableViewStyleGrouped];
|
||||
_tableView.dataSource = self;
|
||||
_tableView.delegate = self;
|
||||
_tableView.backgroundColor = [UIColor whiteColor];
|
||||
_tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
|
||||
_tableView.estimatedRowHeight = 0;
|
||||
_tableView.rowHeight = UITableViewAutomaticDimension;
|
||||
_tableView.estimatedSectionHeaderHeight = 0;
|
||||
_tableView.estimatedSectionFooterHeight = 0;
|
||||
_tableView.sectionHeaderHeight = UITableViewAutomaticDimension;
|
||||
_tableView.sectionFooterHeight = UITableViewAutomaticDimension;
|
||||
_tableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag;
|
||||
|
||||
// 注册 Header/Cell/Footer
|
||||
[_tableView registerClass:[KBAICommentHeaderView class]
|
||||
forHeaderFooterViewReuseIdentifier:kCommentHeaderIdentifier];
|
||||
[_tableView registerClass:[KBAIReplyCell class]
|
||||
forCellReuseIdentifier:kReplyCellIdentifier];
|
||||
[_tableView registerClass:[KBAICommentFooterView class]
|
||||
forHeaderFooterViewReuseIdentifier:kCommentFooterIdentifier];
|
||||
|
||||
// 去掉顶部间距
|
||||
if (@available(iOS 15.0, *)) {
|
||||
_tableView.sectionHeaderTopPadding = 0;
|
||||
}
|
||||
}
|
||||
return _tableView;
|
||||
}
|
||||
|
||||
- (KBAICommentInputView *)inputView {
|
||||
if (!_inputView) {
|
||||
_inputView = [[KBAICommentInputView alloc] init];
|
||||
_inputView.placeholder = @"说点什么...";
|
||||
|
||||
__weak typeof(self) weakSelf = self;
|
||||
_inputView.onSend = ^(NSString *text) {
|
||||
// TODO: 发送评论
|
||||
NSLog(@"[KBAICommentView] Send comment: %@", text);
|
||||
[weakSelf.inputView clearText];
|
||||
};
|
||||
}
|
||||
return _inputView;
|
||||
}
|
||||
|
||||
#pragma mark - Header Anchor
|
||||
|
||||
- (NSDictionary *)captureHeaderAnchorForSection:(NSInteger)section {
|
||||
CGRect rect = [self.tableView rectForHeaderInSection:section];
|
||||
NSLog(@"[KBAICommentView] anchor capture(header) section=%ld rect=%@ offsetY=%.2f contentSizeH=%.2f boundsH=%.2f",
|
||||
(long)section,
|
||||
NSStringFromCGRect(rect),
|
||||
self.tableView.contentOffset.y,
|
||||
self.tableView.contentSize.height,
|
||||
self.tableView.bounds.size.height);
|
||||
if (CGRectIsEmpty(rect) || CGRectIsNull(rect)) {
|
||||
NSLog(@"[KBAICommentView] anchor capture(header) empty section=%ld",
|
||||
(long)section);
|
||||
return nil;
|
||||
}
|
||||
|
||||
CGFloat offset = self.tableView.contentOffset.y - rect.origin.y;
|
||||
return @{
|
||||
@"section" : @(section),
|
||||
@"offset" : @(offset),
|
||||
@"fallbackOffset" : @(self.tableView.contentOffset.y)
|
||||
};
|
||||
}
|
||||
|
||||
- (void)restoreHeaderAnchor:(NSDictionary *)anchor {
|
||||
if (!anchor) {
|
||||
NSLog(@"[KBAICommentView] anchor restore(header) skipped (nil)");
|
||||
return;
|
||||
}
|
||||
|
||||
NSInteger section = [anchor[@"section"] integerValue];
|
||||
if (section < 0 || section >= self.comments.count) {
|
||||
NSLog(@"[KBAICommentView] anchor restore(header) invalid section=%ld",
|
||||
(long)section);
|
||||
return;
|
||||
}
|
||||
|
||||
CGRect rect = [self.tableView rectForHeaderInSection:section];
|
||||
NSLog(@"[KBAICommentView] anchor restore(header) section=%ld rect=%@",
|
||||
(long)section,
|
||||
NSStringFromCGRect(rect));
|
||||
if (CGRectIsEmpty(rect) || CGRectIsNull(rect)) {
|
||||
NSNumber *fallbackOffset = anchor[@"fallbackOffset"];
|
||||
if (!fallbackOffset) {
|
||||
NSLog(@"[KBAICommentView] anchor restore(header) no fallback section=%ld",
|
||||
(long)section);
|
||||
return;
|
||||
}
|
||||
NSLog(@"[KBAICommentView] anchor restore(header) fallback section=%ld offsetY=%.2f",
|
||||
(long)section,
|
||||
[fallbackOffset doubleValue]);
|
||||
[self setTableViewOffset:[fallbackOffset doubleValue]];
|
||||
return;
|
||||
}
|
||||
|
||||
CGFloat targetOffsetY = rect.origin.y + [anchor[@"offset"] doubleValue];
|
||||
NSLog(@"[KBAICommentView] anchor restore(header) target section=%ld targetY=%.2f",
|
||||
(long)section,
|
||||
targetOffsetY);
|
||||
[self setTableViewOffset:targetOffsetY];
|
||||
}
|
||||
|
||||
- (void)setTableViewOffset:(CGFloat)offsetY {
|
||||
UIEdgeInsets inset = self.tableView.adjustedContentInset;
|
||||
CGFloat minOffsetY = -inset.top;
|
||||
CGFloat maxOffsetY =
|
||||
MAX(minOffsetY, self.tableView.contentSize.height + inset.bottom -
|
||||
self.tableView.bounds.size.height);
|
||||
CGFloat targetOffsetY = MIN(MAX(offsetY, minOffsetY), maxOffsetY);
|
||||
NSLog(@"[KBAICommentView] set offset target=%.2f min=%.2f max=%.2f",
|
||||
targetOffsetY,
|
||||
minOffsetY,
|
||||
maxOffsetY);
|
||||
[self.tableView setContentOffset:CGPointMake(0, targetOffsetY)
|
||||
animated:NO];
|
||||
}
|
||||
*/
|
||||
|
||||
@end
|
||||
|
||||
Reference in New Issue
Block a user