在 UITableView 中添加动画部分？
Posted
技术标签:
【中文标题】在 UITableView 中添加动画部分？【英文标题】：Add section with animation in UITableView? 【发布时间】：2012-12-01 05:11:03 【问题描述】：我在 iPhone 应用程序中工作，使用 UITableView 开发我的应用程序。我有 3 个部分，每个部分有 1 行，当用户在 Section1 中按下 UIButton 调用 B1 方法以在此表视图中添加一个部分和行时。它工作正常。
我已尝试添加动画（用于添加更多部分和行）。
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.2];
但动画所有行和部分，但我想在添加部分和行中添加动画。 请问这个怎么处理？
提前致谢
我试过了：
- (void)viewDidLoad
[super viewDidLoad];
ExpandActive = NO;
self.title=@"Expand Tables";
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
if(ExpandActive == YES)
return 4;
else
return 3;
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
// Return the number of rows in the section.
return 1;
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
if(ExpandActive == YES)
if(section == 0)
return @"Header1";
else if(section == 1)
return @"Header1";
else if(section == 2)
return @"Header1";
else if(section == 3)
return @"Header1";
else
if(section == 0)
return @"Header1";
else if(section == 1)
return @"Header1";
else if(section == 2)
return @"Header1";
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
return 30;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil)
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.backgroundColor = [UIColor clearColor];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.userInteractionEnabled=YES;
if(ExpandActive == YES)
if(indexPath.section == 0)
UIView *bg = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 60)];
bg.backgroundColor = [UIColor clearColor];
bg.userInteractionEnabled = YES;
UIButton *btn =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setTitle:@"Yes" forState:UIControlStateNormal];
btn.frame = CGRectMake(10, 5, 120, 40);
[btn addTarget:self action:@selector(B1) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn];
UIButton *btn1 =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn1 setTitle:@"No" forState:UIControlStateNormal];
btn1.frame = CGRectMake(180, 5, 120, 40);
[btn1 addTarget:self action:@selector(B2) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn1];
cell.backgroundView = bg;
[cell.contentView addSubview:bg];
else if(indexPath.section == 1)
text = [[UITextView alloc]initWithFrame:CGRectMake(0,0, 320, 50)];
text.text=@"sdadd";
[cell.contentView addSubview:text];
else if(indexPath.section == 2)
UIView *bg = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 60)];
bg.backgroundColor = [UIColor clearColor];
bg.userInteractionEnabled = YES;
UIButton *btn =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setTitle:@"Yes" forState:UIControlStateNormal];
btn.frame = CGRectMake(10, 5, 120, 40);
[btn addTarget:self action:@selector(B5) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn];
UIButton *btn1 =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn1 setTitle:@"No" forState:UIControlStateNormal];
btn1.frame = CGRectMake(180, 5, 120, 40);
[btn1 addTarget:self action:@selector(B6) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn1];
cell.backgroundView = bg;
[cell.contentView addSubview:bg];
else if(indexPath.section == 3)
UIView *bg = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 60)];
bg.backgroundColor = [UIColor clearColor];
bg.userInteractionEnabled = YES;
UIButton *btn =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setTitle:@"Yes" forState:UIControlStateNormal];
btn.frame = CGRectMake(10, 5, 120, 40);
[btn addTarget:self action:@selector(B5) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn];
UIButton *btn1 =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn1 setTitle:@"No" forState:UIControlStateNormal];
btn1.frame = CGRectMake(180, 5, 120, 40);
[btn1 addTarget:self action:@selector(B6) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn1];
cell.backgroundView = bg;
[cell.contentView addSubview:bg];
else
if(indexPath.section == 0)
UIView *bg = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 60)];
bg.backgroundColor = [UIColor clearColor];
bg.userInteractionEnabled = YES;
UIButton *btn =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setTitle:@"Yes" forState:UIControlStateNormal];
btn.frame = CGRectMake(10, 5, 120, 40);
[btn addTarget:self action:@selector(B1) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn];
UIButton *btn1 =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn1 setTitle:@"No" forState:UIControlStateNormal];
btn1.frame = CGRectMake(180, 5, 120, 40);
[btn1 addTarget:self action:@selector(B2) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn1];
cell.backgroundView = bg;
[cell.contentView addSubview:bg];
else if(indexPath.section == 1)
UIView *bg = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 60)];
bg.backgroundColor = [UIColor clearColor];
bg.userInteractionEnabled = YES;
UIButton *btn =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setTitle:@"Yes" forState:UIControlStateNormal];
btn.frame = CGRectMake(10, 5, 120, 40);
[btn addTarget:self action:@selector(B3) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn];
UIButton *btn1 =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn1 setTitle:@"No" forState:UIControlStateNormal];
btn1.frame = CGRectMake(180, 5, 120, 40);
[btn1 addTarget:self action:@selector(B4) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn1];
cell.backgroundView = bg;
[cell.contentView addSubview:bg];
else if(indexPath.section == 2)
UIView *bg = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 60)];
bg.backgroundColor = [UIColor clearColor];
bg.userInteractionEnabled = YES;
UIButton *btn =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setTitle:@"Yes" forState:UIControlStateNormal];
btn.frame = CGRectMake(10, 5, 120, 40);
[btn addTarget:self action:@selector(B5) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn];
UIButton *btn1 =[UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn1 setTitle:@"No" forState:UIControlStateNormal];
btn1.frame = CGRectMake(180, 5, 120, 40);
[btn1 addTarget:self action:@selector(B6) forControlEvents:UIControlEventTouchUpInside];
[bg addSubview:btn1];
cell.backgroundView = bg;
[cell.contentView addSubview:bg];
return cell;
-(void)B1
NSLog(@"B1");
ExpandActive = YES;
[text removeFromSuperview];
[self.tableView reloadData];
-(void)B2
NSLog(@"B2");
ExpandActive = NO;
[self.tableView reloadData];
[text removeFromSuperview];
【问题讨论】：
【参考方案1】：您似乎想将新部分添加为第 1 部分。像这样更新您的两个按钮方法：
-(void)B1
NSLog(@"B1");
ExpandActive = YES;
[self.tableView insertSections:[NSIndexSet indexSetWithIndex:1] withRowAnimation: UITableViewRowAnimationFade];
-(void)B2
NSLog(@"B2");
ExpandActive = NO;
[self.tableView deleteSections:[NSIndexSet indexSetWithIndex:1] withRowAnimation: UITableViewRowAnimationFade];
随意使用不同的动画。
顺便说一句 - 你有很多重复的代码。您需要消除所有重复的代码。
这是一个例子：
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
NSInteger effectiveSection = section;
if (ExpandActive && effectiveSection > 1)
effectiveSection++;
switch (effectiveSection)
case 0:
return @"Fixed Section 1";
case 1:
return @"Optional Section";
case 2:
return @"Fixed Section 2";
case 3:
return @"Fixed Section 3";
return nil; // this shouldn't be reached but makes the compiler happy
另外，如果你有一个固定的高度，不要实现heightForRowAtIndexPath 方法。这是非常低效的。相反，在表格视图上设置rowHeight 属性。一个很好的地方是viewDidLoad。只需设置一次即可完成。
还有一个 - 无需在表格单元格或视图上设置 userInteractionEnabled。默认情况下启用。对于 UILabel 和 UIImageView 之类的内容，它已被禁用。
【讨论】：
【参考方案2】：使用 UITableView 的– insertSections:withRowAnimation: 方法。您还必须处理 -numberOfSectionsInTableView: 方法中返回的部分数。
【讨论】：
以上是关于在 UITableView 中添加动画部分？的主要内容，如果未能解决你的问题，请参考以下文章
在 uitableview 底部创建一个文本字段并发送按钮，例如 Instagram 评论部分