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前言
这周完成了评论内容，改了一些小bug。收藏界面正在加油，FMDB库目前不是很理解
评论界面
关于长评论和短评论，我是把他们分成了三个section。第一个section是长评论，第二个section是短评，第三个section是@“已加载全部评论”
第一个section的小标题就是请求到的数据中的长评论的个数，第二个section的小标题就是请求到的数据中短评的个数。
cell的高度我是通过计算对应的文字的行数，然后将行数存到数组里，在返回数组。根据对应的行数来计算对应cell的高度这样子实现这里是cell上文字高度的计算
labText.numberOfLines = 0; [labText sizeToFit]; CGFloat height = labText.frame.size.height; int num = height/labText.font.lineHeight; NSString* strHeight = [NSString stringWithFormat:@"%d", num]; [self.longHeightArray addObject:strHeight]; labText.numberOfLines = num + 10; NSMutableParagraphStyle* paragraphStyle = [[NSMutableParagraphStyle alloc] init]; paragraphStyle.lineSpacing = 10; NSMutableDictionary* attributes = [NSMutableDictionary dictionary]; [attributes setObject:paragraphStyle forKey:NSParagraphStyleAttributeName]; labText.attributedText = [[NSAttributedString alloc] initWithString:labText.text attributes:attributes];- 1
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这里是cell的各个section和各个高度的返回
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 3; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ if (section == 0){ return [self.LongCommentDictionary[@"comments"] count]; } else if (section == 1){ return [self.shortCommentDictionary[@"comments"] count]; } else { return 1; } } - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { // int i = 0; // int m = 0; if (indexPath.section == 0 ){ NSString* strHeight = self.longHeightArray[indexPath.row]; int num = [strHeight intValue]; return (num * 20 + 90); } else if (indexPath.section == 1 && indexPath.row < self.shortHeightArray.count){ NSString* strHeight = self.shortHeightArray[indexPath.row]; int num = [strHeight intValue]; return (num * 20 + 90); } else{ return 100; } return 0; } - (void)addView{ [self addSubview:self.commentTableView]; } - (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section { UITableViewHeaderFooterView *header = (UITableViewHeaderFooterView *)view; header.contentView.backgroundColor= [UIColor clearColor]; header.textLabel.font = [UIFont boldSystemFontOfSize:20]; header.textLabel.textColor = [UIColor blackColor]; if (section == 0){ NSString* str = [NSString stringWithFormat:@"%lu条长评", [self.LongCommentDictionary[@"comments"] count]]; header.textLabel.text = str; } else if (section == 1){ NSString* str = [NSString stringWithFormat:@"%lu条短评", [self.shortCommentDictionary[@"comments"] count]]; header.textLabel.text = str; } } - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { return @"111"; } - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{ if (section == 2){ return 0; } else{ return 20; } } - (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{ if (section == 2){ return 0; } else{ return 20; } }- 1
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首页cell的小标题的文字显示
之前写的发现有bug，每次下拉刷新后请求到了前一天的日期，但是每次下拉后改变了所有section的标题，不是一个section的标题
重新使用了一种方法去写这块- (UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{ if (section != 0 && section != self.addSection - 1 && section != 1){ NSString* str = self.allCellArray[section - 2][@"date"]; NSString* strNew = [str substringFromIndex:4]; NSString* dateOne = [strNew substringToIndex:2]; NSString* dateTwo = [strNew substringFromIndex:2]; NSString* date = [NSString stringWithFormat:@" %@月%@日---------------------------", dateOne, dateTwo]; UILabel* lab = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, WIDTH - 30, 40)]; lab.textColor = [UIColor grayColor]; lab.text = date; [lab setFont:[UIFont systemFontOfSize:25]]; return lab; } return 0; } - (NSString*)tableView:(UITableView*)tableView titleForHeaderInSection:(NSInteger)section{ if (section != self.addSection - 1){ return @"111"; } else{ return 0; } }- 1
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下拉刷新
发现下拉刷新的bug是下拉三次以上的时候，请求到的两个section的cell就成了相同的。采用大佬的方法，将每次请求到的数据加到一个array里，然后这个cell上的各种信息使用这个array中的数据
- (void)GetBefore{ NSString* dateOld = self.allCellArray[self.addSection - 4][@"date"]; NSDictionary* dic = [NSDictionary dictionaryWithObject:dateOld forKey:@"111"]; NSNotification* notification = [NSNotification notificationWithName:@"tongzhi" object:nil userInfo:dic]; [[NSNotificationCenter defaultCenter] postNotification:notification]; //[self.tableView reloadData]; } - (void)GetBefore{ [[OldManager shareManger]makeData:^(HomeModel * _Nonnull ViewModel) { self.viewHome.stroiesDictionary = [ViewModel toDictionary]; [self.viewHome.allCellArray addObject:self.viewHome.stroiesDictionary]; dispatch_async(dispatch_get_main_queue(), ^{ [self.viewHome.tableView reloadData]; }); } error:^(NSError * _Nonnull error) { NSLog(@"请求失败!"); }date:(NSString*)self.oldDate]; } else if (indexPath.section != 0 ){ //在这里进行相应的布局 }- 1
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收藏界面FMDB库暂时没看明白。正在加油
评论的展开
这块一开始一直不知道咋写，因为我是使用算出来每个cell上文字的行数然后实现cell的不同的高度。
后来，想到了给每个有回复的cell判断一下回复的行数，如果行数大于2，添加一个“点击展开”的按钮，然后把这个按钮的状态设为0，将按钮的状态存入数组里。然后给这个按钮设置点击事件。每次点击后tableView刷新一次。
然后每次tableView刷新后将存储高度的数组元素清空，在重新存储。然后判断按钮的状态，如果状态为打开且回复行数大于2，评论显示的行数就是应有行数，如果状态关闭且行数大于2，显示行数就为2。如果行数小于2，则没有按钮。效果如下：
if (num2 >= 2 && [self.shortSelectedArray[indexPath.row] isEqualToString: @"0"]){ NSString* time = self.shortCommentDictionary[@"comments"][indexPath.row][@"time"]; NSDateFormatter* formatter = [[NSDateFormatter alloc] init]; [formatter setDateStyle:NSDateFormatterMediumStyle]; [formatter setTimeStyle:NSDateFormatterShortStyle]; [formatter setDateFormat:@"MM-dd HH:mm"]; NSDate* confromTimesp = [NSDate dateWithTimeIntervalSince1970:(NSTimeInterval)[time intValue]]; NSString* confroTimespStr = [formatter stringFromDate:confromTimesp]; UILabel* labTime = [[UILabel alloc] init]; labTime.frame = CGRectMake(100, (num+num2)*20 + 50, 100, 30); labTime.text = confroTimespStr; [cell.contentView addSubview:labTime]; labTime.textColor = [UIColor grayColor]; labOne.numberOfLines = 2; UIButton* btnOpen = [UIButton buttonWithType:UIButtonTypeCustom]; btnOpen.tag = 100 + indexPath.row; btnOpen.frame = CGRectMake(110, (num+num2)*20 + 50, WIDTH - 100, 30); [btnOpen setTitle:@"展开全文" forState:UIControlStateNormal]; [btnOpen setTitleColor:[UIColor grayColor] forState:UIControlStateNormal]; btnOpen.titleLabel.font = [UIFont systemFontOfSize:15]; [cell.contentView addSubview:btnOpen]; [btnOpen addTarget:self action:@selector(pressOpen:) forControlEvents:UIControlEventTouchUpInside]; UIButton* btnLike = [UIButton buttonWithType:UIButtonTypeCustom]; btnLike.frame = CGRectMake(WIDTH - 70, (num+num2) * 20 + 50, 20, 20); [btnLike setImage:[UIImage imageNamed:@"dianzan-2"] forState:UIControlStateNormal]; [cell.contentView addSubview:btnLike]; UILabel* labLike = [[UILabel alloc] init]; labLike.text = self.shortCommentDictionary[@"comments"][indexPath.row][@"likes"]; labLike.frame = CGRectMake(WIDTH - 90, (num+num2)*20 + 50, 30, 30); [cell.contentView addSubview:labLike]; UIButton* btnComments = [UIButton buttonWithType:UIButtonTypeCustom]; btnComments.frame = CGRectMake(WIDTH - 40, (num+num2)* 20 + 50, 20, 20); [btnComments setImage:[UIImage imageNamed:@"shoucang-3"] forState:UIControlStateNormal]; [cell.contentView addSubview:btnComments]; } else if (num2 >= 2 && [self.shortSelectedArray[indexPath.row] isEqualToString: @"1"]){ NSLog(@"YES"); CGFloat height = labOne.frame.size.height; int num = height/labOne.font.lineHeight; labOne.numberOfLines = num + 10; NSMutableParagraphStyle* paragraphStyle = [[NSMutableParagraphStyle alloc] init]; paragraphStyle.lineSpacing = 10; NSMutableDictionary* attributes = [NSMutableDictionary dictionary]; [attributes setObject:paragraphStyle forKey:NSParagraphStyleAttributeName]; labOne.attributedText = [[NSAttributedString alloc] initWithString:labOne.text attributes:attributes]; NSString* time = self.shortCommentDictionary[@"comments"][indexPath.row][@"time"]; NSDateFormatter* formatter = [[NSDateFormatter alloc] init]; [formatter setDateStyle:NSDateFormatterMediumStyle]; [formatter setTimeStyle:NSDateFormatterShortStyle]; [formatter setDateFormat:@"MM-dd HH:mm"]; NSDate* confromTimesp = [NSDate dateWithTimeIntervalSince1970:(NSTimeInterval)[time intValue]]; NSString* confroTimespStr = [formatter stringFromDate:confromTimesp]; UILabel* labTime = [[UILabel alloc] init]; labTime.frame = CGRectMake(100, (num+num2)*20 + 30, 100, 30); labTime.text = confroTimespStr; [cell.contentView addSubview:labTime]; labTime.textColor = [UIColor grayColor]; labOne.numberOfLines = 0; UIButton* btnLike = [UIButton buttonWithType:UIButtonTypeCustom]; btnLike.frame = CGRectMake(WIDTH - 70, (num+num2) * 20 + 30, 20, 20); [btnLike setImage:[UIImage imageNamed:@"dianzan-2"] forState:UIControlStateNormal]; [cell.contentView addSubview:btnLike]; UILabel* labLike = [[UILabel alloc] init]; labLike.text = self.shortCommentDictionary[@"comments"][indexPath.row][@"likes"]; labLike.frame = CGRectMake(WIDTH - 90, (num+num2)*20 + 30, 30, 30); [cell.contentView addSubview:labLike]; UIButton* btnComments = [UIButton buttonWithType:UIButtonTypeCustom]; btnComments.frame = CGRectMake(WIDTH - 40, (num+num2)* 20 + 30, 20, 20); [btnComments setImage:[UIImage imageNamed:@"shoucang-3"] forState:UIControlStateNormal]; [cell.contentView addSubview:btnComments]; UIButton* btnOpen = [UIButton buttonWithType:UIButtonTypeCustom]; btnOpen.tag = 100 + indexPath.row; btnOpen.frame = CGRectMake(110, (num+num2)*20 +30, WIDTH - 100, 30); [btnOpen setTitle:@"收起" forState:UIControlStateNormal]; [btnOpen setTitleColor:[UIColor grayColor] forState:UIControlStateNormal]; btnOpen.titleLabel.font = [UIFont systemFontOfSize:15]; [cell.contentView addSubview:btnOpen]; [btnOpen addTarget:self action:@selector(pressOpen:) forControlEvents:UIControlEventTouchUpInside]; x = 0; } NSMutableParagraphStyle* paragraphStyle2 = [[NSMutableParagraphStyle alloc] init]; paragraphStyle2.lineSpacing = 10; NSMutableDictionary* attributes2 = [NSMutableDictionary dictionary]; [attributes2 setObject:paragraphStyle2 forKey:NSParagraphStyleAttributeName]; labOne.attributedText = [[NSAttributedString alloc] initWithString:labOne.text attributes:attributes2]; NSString* strHeight2 = [NSString stringWithFormat:@"%d", num + num2 + 1]; [self.shortHeightArray addObject:strHeight2]; [cell.contentView addSubview:labOne]; 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收藏
收藏界面需要实现在WKWebView上点击收藏或者取消收藏收藏界面都会改变。在收藏的cell上取消收藏收藏界面的收藏状态也会改变。
这里是在首页的WKWebView上点击收藏，然后将这个界面的URL，title，image保存至FMDB库里的函数。
- (void)pressShoucang:(UIButton*)btnShouCang{ btnShouCang.selected = !btnShouCang.selected; if (btnShouCang.selected == YES){ [btnShouCang setImage:[UIImage imageNamed:@"shoucang-4"] forState:UIControlStateNormal]; BOOL result = [self.collectionDataBase executeUpdate:@"INSERT INTO collectionData (mainLabel, imageUrl, url) VALUES (?, ?, ?);", self.allCellArray[(btnShouCang.tag - 1000)/6 ][@"stories"][(btnShouCang.tag - 1000) % 6][@"title"], self.allCellArray[(btnShouCang.tag - 1000)/6 ][@"stories"][(btnShouCang.tag - 1000) % 6][@"images"][0], self.allCellArray[(btnShouCang.tag - 1000)/6 ][@"stories"][(btnShouCang.tag - 1000) % 6][@"url"]]; if (!result){ NSLog(@"NO"); } else { NSLog(@"YES"); } } else { [btnShouCang setImage:[UIImage imageNamed:@"shoucang-3"] forState:UIControlStateNormal]; if ([self.collectionDataBase open]) { NSString *sql = @"delete from collectionData where (mainLabel) = (?) and (url) = (?) and (imageUrl) = (?)"; BOOL result = [self.collectionDataBase executeUpdate:sql, self.allCellArray[(btnShouCang.tag - 1000)/6 ][@"stories"][(btnShouCang.tag - 1000) % 6][@"title"], self.allCellArray[(btnShouCang.tag - 1000)/6 ][@"stories"][(btnShouCang.tag - 1000) % 6][@"url"], self.allCellArray[(btnShouCang.tag - 1000)/6 ][@"stories"][(btnShouCang.tag - 1000) % 6][@"images"][0]]; if (!result) { NSLog(@"NO"); } else { } } else { NSLog(@"NO"); } } NSDictionary* dic = [NSDictionary dictionaryWithObject:self.allCellArray[(btnShouCang.tag % 1000) / 6 ][@"stories"][(btnShouCang.tag % 1000) / 6] forKey:@"111"]; [[NSNotificationCenter defaultCenter] postNotificationName:@"shoucang" object:nil userInfo:dic]; }- 1
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这个是在收藏界面里将收藏cell点击取消的代码
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(nonnull NSIndexPath *)indexPath{ return YES; } - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if ([self.collectionDataBase open]) { NSString *sql = @"delete from collectionData where (mainLabel) = (?) and (url) = (?) and (imageUrl) = (?)"; BOOL result = [self.collectionDataBase executeUpdate:sql, self.titleArray[indexPath.row], self.URLArray[indexPath.row], self.imagesArray[indexPath.row]]; if (!result) { NSLog(@"NO"); } else { [self.URLArray removeObjectAtIndex:indexPath.row]; [self.titleArray removeObjectAtIndex:indexPath.row]; [self.imagesArray removeObjectAtIndex:indexPath.row]; } } else { NSLog(@"NO"); } [self.collectionDataBase close]; [self.tableView reloadData]; }- 1
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这个是在收藏的WKWebView上点击取消收藏的代码
- (void)pressShoucang:(UIButton*)btnShouCang{ btnShouCang.selected = !btnShouCang.selected; if (btnShouCang.selected == YES){ [btnShouCang setImage:[UIImage imageNamed:@"shoucang-3"] forState:UIControlStateSelected]; if ([self.collectionDataBase open]) { // 删除数据 NSString *sql = @"delete from collectionData where (mainLabel) = (?) and (url) = (?) and (imageUrl) = (?)"; BOOL result = [self.collectionDataBase executeUpdate:sql, self.titleArray[btnShouCang.tag % 1000], self.URLArray[btnShouCang.tag % 1000], self.imagesArray[btnShouCang.tag % 1000]]; if (!result) { NSLog(@"数据删除失败"); } else { [self.URLArray removeObjectAtIndex:btnShouCang.tag % 1000]; [self.titleArray removeObjectAtIndex:btnShouCang.tag % 1000]; [self.imagesArray removeObjectAtIndex:btnShouCang.tag % 1000]; } } else { NSLog(@"NO"); } [self.collectionDataBase close]; [self.tableView reloadData]; } else { [btnShouCang setImage:[UIImage imageNamed:@"shoucang-4"] forState:UIControlStateSelected]; BOOL result = [self.collectionDataBase executeUpdate:@"INSERT INTO collectionData (mainLabel, imageUrl, url) VALUES (?, ?, ?);", self.titleArray[btnShouCang.tag % 1000], self.imagesArray[btnShouCang.tag % 1000], self.URLArray[btnShouCang.tag % 1000]]; if (!result){ NSLog(@"NO"); } else { NSLog(@"YES"); } } }- 1
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- 原文地址：https://blog.csdn.net/weixin_61196797/article/details/127953026
