短视频系统中评论功能的分量在短视频功能里可谓是举足轻重，下面简单介绍下，短视频系统中的评论功能的实现方式:
评论分为对视频的评论和对评论的回复两部分：
对于评论列表大家再熟悉不过了，就是一个tableview罢了，相信刚入门的技术也可以实现。技术的关键在于对评论的回复，我们使用了tableview的嵌套，即：在评论的cell中创建回复的tablview，使用代理功能来实现对数据和UI界面的精准控制，下面是实现的具体方式:
代码语言：javascript复制_contentL.attributedText = attstr;
if ([_model.replys intValue] > 0) {
CGFloat HHHH = 0.0;
for (NSDictionary *dic in _replyArray) {
detailmodel *model = [[detailmodel alloc]initWithDic:dic];
HHHH = model.rowH;
}
if ([_model.replys intValue] == 1) {
_tableHeight.constant = HHHH;
_replyTable.tableFooterView = nil;
}else{
// if (!_replyBottomView) {
NSLog(@"===%d",page);
_model.replayView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 100, 20)];
_model.replayView.backgroundColor = CellRow_Cor;
//回复
UIButton * replyBtn = [UIButton buttonWithType:0];
replyBtn.backgroundColor = [UIColor clearColor];
replyBtn.titleLabel.textAlignment = NSTextAlignmentLeft;
replyBtn.titleLabel.font = [UIFont systemFontOfSize:12];
[replyBtn addTarget:self action:@selector(makeReply:) forControlEvents:UIControlEventTouchUpInside];
BOOL showNum = NO;
if (_model.replyList.count==1) {
showNum = YES;
}
[self changeMoreShowText:showNum andBtn:replyBtn];
NSMutableAttributedString *attstr2 = [[NSMutableAttributedString alloc]initWithString:@"收起"];
[attstr2 addAttribute:NSForegroundColorAttributeName value:RGB_COLOR(@"#969696", 1) range:NSMakeRange(0, 2)];
NSTextAttachment *attach2 = [[NSTextAttachment alloc] init];
UIImage *image2 = [UIImage imageNamed:@"relpay_三角上.png"];
NSAttributedString *imageString2;
if (image2) {
attach2.image = image2;
attach2.bounds = CGRectMake(0, -4, 15, 15);
imageString2 = [NSAttributedString attributedStringWithAttachment:attach2];
[attstr2 appendAttributedString:imageString2];
}
[replyBtn setAttributedTitle:attstr2 forState:UIControlStateSelected];
[_model.replayView addSubview:replyBtn];
//记录按钮属性
_model.replyMoreBtn = replyBtn;
[replyBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.bottom.equalTo(_model.replayView);
make.left.equalTo(_model.replayView).offset(26);
}];
if ((_model.replyList.count % 10 != 0
&& _model.replyList.count % 10 != 1
&& _model.replyList.count% 10 != 3)
|| ((_model.replyList.count 1)== [_model.replys intValue])
) {
replyBtn.selected = YES;
}else{
replyBtn.selected = NO;
}
_replyTable.tableFooterView = _model.replayView;
_tableHeight.constant = HHHH 20;
}
}else{
_tableHeight.constant = 0;
_replyTable.tableFooterView = nil;
}
- (void)makeReply:(UIButton *)replyBtn{
if (replyBtn.selected) {
NSDictionary *dic = [_replyArray firstObject];
[_replyArray removeAllObjects];
[_replyArray addObject:[dic mutableCopy]];
_model.replyList = [_replyArray mutableCopy];
// [_replyTable reloadData];
replyBtn.selected = NO;
[self changeMoreShowText:YES andBtn:replyBtn];
[self.delegate reloadCurCell:_model andIndex:_curIndex andReplist:_replyArray needRefresh:YES];
}else{
if (_replyArray.count == 1) {
page = 1;
}else{
page ;
}
[self requestData:NO andBtn:replyBtn];
}
}
-(void)changeMoreShowText:(BOOL)isFirstPage andBtn:(UIButton *)replyBtn{
NSString *tempStr;
if (isFirstPage) {
tempStr = [NSString stringWithFormat:@"展开%d条回复",[_model.replys intValue]>=2?([_model.replys intValue]-1):(1)];
}else{
tempStr = [NSString stringWithFormat:@"展开更多回复"];
}
NSMutableAttributedString *attstr = [[NSMutableAttributedString alloc]initWithString:tempStr];
[attstr addAttribute:NSForegroundColorAttributeName value:RGB_COLOR(@"#969696", 1) range:NSMakeRange(0, tempStr.length)];
NSTextAttachment *attach = [[NSTextAttachment alloc] init];
UIImage *image = [UIImage imageNamed:@"relpay_三角下.png"];
NSAttributedString *imageString;
if (image) {
attach.image = image;
attach.bounds = CGRectMake(0, -4, 15, 15);
imageString = [NSAttributedString attributedStringWithAttachment:attach];
[attstr appendAttributedString:imageString];
}
[replyBtn setAttributedTitle:attstr forState:0];
}看了上述短视频APP源码评论功能的方法介绍，大家是不是眼前一亮？是不是豁然开朗？关于更多短视频系统功能的介绍可以关注我们的账号，我们会持续更新关于短视频功能介绍。
