UITableView中的Section headerview重复
问题描述:
我正在创建一个应用程序,并且我有一个自定义的tableview头。但有时候头部会被重复。它在tableview中占据一排。我如何解决这个奇怪的问题?顺便说一句,我的tableviewstyle是纯的,标题高度是44.0,页脚高度是0.0。这是一个如何显示的图像。标题“评论”重复在标题“消息”下面,而它应该是该行。UITableView中的Section headerview重复
alt text http://i48.tinypic.com/28le59d.jpg
下面是这种观点的完整实现
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
TitleForSectionView=[[NSArray arrayWithObjects:@"Dates To Remember",@"Messages",@"Comments",@"Wishlist",@"Reminders",@"Bookmarks",nil] retain];
self.MySectionIndexArray=[[NSMutableArray alloc] init];
[self.MySectionIndexArray addObject:@"UP"];
[self.MySectionIndexArray addObject:@"DOWN"];
[self.MySectionIndexArray addObject:@"DOWN"];
[self.MySectionIndexArray addObject:@"DOWN"];
[self.MySectionIndexArray addObject:@"DOWN"];
[self.MySectionIndexArray addObject:@"DOWN"];
self.IconsForSectionsView=[[NSMutableArray alloc] init];
[self.IconsForSectionsView addObject:[UIImage imageNamed:@"IconCalender.png"]];
[self.IconsForSectionsView addObject:[UIImage imageNamed:@"IconMessage.png"]];
[self.IconsForSectionsView addObject:[UIImage imageNamed:@"IconComments.png"]];
[self.IconsForSectionsView addObject:[UIImage imageNamed:@"IconWishList.png"]];
[self.IconsForSectionsView addObject:[UIImage imageNamed:@"IconReminder.png"]];
[self.IconsForSectionsView addObject:[UIImage imageNamed:@"IconBookMark.png"]];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 6;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if ([[self.MySectionIndexArray objectAtIndex:section] isEqualToString:@"UP"]) {
return 4;
} else {
return 0;
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *MyDashBoardCell=nil;
static NSString *[email protected]"AddNewDateCell";
static NSString *CellIdentifier = @"DashBoardCell";
DashBoardCustomCellObject = (DashBoardCustomCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (DashBoardCustomCellObject == nil) {
[[[[NSBundle mainBundle] loadNibNamed:@"DashBoardCustomCell" owner:self options:nil] retain]autorelease];
}
[DashBoardCustomCellObject SetDashBoardCellData:@"Mar 9" EventText:@"My Birthday"];
AddNewDateCellObject = (AddNewDateCell *)[tableView dequeueReusableCellWithIdentifier:AddNewDateCellIdentifier];
if (AddNewDateCellObject == nil) {
[[[[NSBundle mainBundle] loadNibNamed:@"AddNewDateCell" owner:self options:nil] retain]autorelease];
}
if(indexPath.section==0 && indexPath.row==0)
{
MyDashBoardCell=AddNewDateCellObject;
}
else
{
MyDashBoardCell=DashBoardCustomCellObject;
}
return MyDashBoardCell;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
// create the parent view that will hold header Label and button and icon image
self.customView = [[[UIView alloc] initWithFrame:CGRectMake(0,0,tableView.bounds.size.width,44)] autorelease];
self.customView.backgroundColor=[UIColor whiteColor];
// create image object
UIImageView *icon= [[[UIImageView alloc] initWithImage:[self.IconsForSectionsView objectAtIndex:section]] autorelease];
icon.contentMode=UIViewContentModeCenter;
icon.frame = CGRectMake(0,0,40,40);
// create the label objects
UILabel *headerLabel = [[[UILabel alloc] initWithFrame:CGRectZero] autorelease];
headerLabel.backgroundColor = [UIColor clearColor];
headerLabel.font = [UIFont boldSystemFontOfSize:13];
headerLabel.frame = CGRectMake(53,11,172,21);
headerLabel.text = [TitleForSectionView objectAtIndex:section];
headerLabel.textColor = [UIColor blackColor];
headerLabel.highlightedTextColor=[UIColor whiteColor];
// create the button objects
ButtonDrop = [[[UIButton alloc] initWithFrame:CGRectMake(278, 9, 25, 25)] autorelease];
ButtonDrop.tag=section;
if ([[self.MySectionIndexArray objectAtIndex:section] isEqualToString:@"UP"])
{
[ButtonDrop setBackgroundImage:[UIImage imageNamed:@"Up.png"] forState:UIControlStateNormal];
self.customView.backgroundColor=[UIColor blueColor];
headerLabel.highlighted=YES;
}
else
{
[ButtonDrop setBackgroundImage:[UIImage imageNamed:@"Down.png"] forState:UIControlStateNormal];
}
[ButtonDrop addTarget:self action:@selector(checkAction:) forControlEvents:UIControlEventTouchUpInside];
[self.customView addSubview:icon];
[self.customView addSubview:headerLabel];
[self.customView addSubview:ButtonDrop];
return self.customView;
}
- (void)checkAction:(id)sender
{
UIButton *Button = (UIButton*)sender;
NSLog(@"Button Tag=%d",Button.tag);
if([[self.MySectionIndexArray objectAtIndex:Button.tag] isEqualToString:@"UP"])
{
[self.MySectionIndexArray replaceObjectAtIndex:Button.tag withObject:@"DOWN"];
[ButtonDrop setBackgroundImage:[UIImage imageNamed:@"Up.png"] forState:UIControlStateNormal];
}
else
{
[self.MySectionIndexArray replaceObjectAtIndex:Button.tag withObject:@"UP"];
[ButtonDrop setBackgroundImage:[UIImage imageNamed:@"Down.png"] forState:UIControlStateNormal];
}
[TableDashBoard reloadSections:[NSIndexSet indexSetWithIndex:Button.tag] withRowAnimation:UITableViewRowAnimationFade];
}
答
我觉得有几个解释相关的:
(1)你显示一个空的节头部分会导致两个标题出现在另一个的顶部,而没有行之间。 (2)你正在返回一个标题视图作为一个行单元格在– tableView:cellForRowAtIndexPath:
由于标题“它代替了tableview中的一行”我认为这是最可能的解释。请检查– tableView:viewForHeaderInSection:
。
+0
我发布我的代码看看它是否有帮助 – 2009-12-31 06:22:54
答
尝试为空白部分设置零高度的行。这似乎使他们正确绘制我。
代码中的哪个类显示注释视图?该评论应该是一个表行单元格还是它应该是一个标题视图? – TechZen 2009-12-31 16:35:11
它是一个标题view.but有时它会自动变成row.I不知道是我张贴我的完整代码 – 2010-01-02 07:06:38