我正在开发一款通用应用。在这个应用程序中有一个UITableView。问题是TableView中的标题行在iphone中的6行和iPad中的9行之后重复。
我用谷歌搜索，但没有找到解决此头问题的解决方案。请帮忙。
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// Return the number of rows in the section.
return [tripList count];
}
UiTableview cellForRowAtIndexPath代码：
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UILabel *lblTripNumber = nil;
UILabel *lblTripState = nil;
UIImageView *imgTripState = nil;
UILabel *lblStateTitleText = nil;
UILabel *lblTripNUmberTitleValue = nil;
static NSUInteger const kTripNumberLabelTag = 2;
static NSUInteger const kTripStateLabelTag = 3;
static NSUInteger const kTripImageTag = 4;
BOOL isiPhone = UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(indexPath.row == 0)
{
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
if (!isiPhone) // 1=Ipad
{
lblStateTitleText = [[[UILabel alloc] initWithFrame:CGRectMake(205, 27, 250, (cell.contentView.frame.size.height))] autorelease];
lblStateTitleText.font = [UIFont boldSystemFontOfSize:32];
}
else
{
lblStateTitleText = [[[UILabel alloc] initWithFrame:CGRectMake(65, 10, 130, (cell.contentView.frame.size.height))] autorelease];
lblStateTitleText.font = [UIFont boldSystemFontOfSize:16];
}
lblStateTitleText.textAlignment = UITextAlignmentLeft;
lblStateTitleText.backgroundColor = [UIColor clearColor];
lblStateTitleText.tag = 11;
lblStateTitleText.text = @"Trip State";
lblStateTitleText.textColor = [UIColor cyanColor];
[cell.contentView addSubview:lblStateTitleText];
if (!isiPhone) // 1=Ipad
{
lblTripNUmberTitleValue = [[[UILabel alloc] initWithFrame:CGRectMake(445, 27, 290, (cell.contentView.frame.size.height))] autorelease];
lblTripNUmberTitleValue.font = [UIFont boldSystemFontOfSize:32];
}
else
{
lblTripNUmberTitleValue = [[[UILabel alloc] initWithFrame:CGRectMake(180, 10, 250, (cell.contentView.frame.size.height))] autorelease];
lblTripNUmberTitleValue.font = [UIFont boldSystemFontOfSize:16];
}
lblTripNUmberTitleValue.textAlignment = UITextAlignmentLeft;
lblTripNUmberTitleValue.backgroundColor = [UIColor clearColor];
lblTripNUmberTitleValue.tag = 12;
lblTripNUmberTitleValue.text = @"Confirmation#";
lblTripNUmberTitleValue.textColor = [UIColor greenColor];
[cell.contentView addSubview:lblTripNUmberTitleValue];
}
}
else
{
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
CGFloat xIndex = 6.0;
CGFloat xIpadIndex = 6.0;
CGFloat TripNumberLabelWidth = 130.0;
if (!isiPhone) // 1=Ipad
{
imgTripState = [[[UIImageView alloc] initWithFrame:CGRectMake(xIndex, 18, 50, 64)] autorelease];
}
else
{
imgTripState = [[[UIImageView alloc] initWithFrame:CGRectMake(xIndex, 8, 32, 32)] autorelease];
}
imgTripState.tag = kTripImageTag;
[cell.contentView addSubview:imgTripState];
xIndex +=73;
xIpadIndex +=85;
if (!isiPhone) // 1=Ipad
{
lblTripState = [[[UILabel alloc] initWithFrame:CGRectMake(xIpadIndex, 25, TripNumberLabelWidth, (cell.contentView.frame.size.height))] autorelease];
lblTripState.font = [UIFont boldSystemFontOfSize:38];
}
else
{
lblTripState = [[[UILabel alloc] initWithFrame:CGRectMake(xIndex, 1, TripNumberLabelWidth, (cell.contentView.frame.size.height))] autorelease];
lblTripState.font = [UIFont boldSystemFontOfSize:20];
}
lblTripState.textAlignment = UITextAlignmentLeft;
lblTripState.backgroundColor = [UIColor clearColor];
lblTripState.tag = kTripStateLabelTag;
lblTripState.textColor = [UIColor colorWithRed:(0.0/255) green:(241.0/255) blue:(216.0/255) alpha:1.0f];
[cell.contentView addSubview:lblTripState];
xIndex +=132;
xIpadIndex +=120;
if (!isiPhone) // 1=Ipad
{
lblTripNumber = [[[UILabel alloc] initWithFrame:CGRectMake(xIpadIndex, 25, TripNumberLabelWidth, (cell.contentView.frame.size.height))] autorelease];
lblTripNumber.font = [UIFont boldSystemFontOfSize:35];
}
else
{
lblTripNumber = [[[UILabel alloc] initWithFrame:CGRectMake(xIndex, 0, TripNumberLabelWidth, (cell.contentView.frame.size.height))] autorelease];
lblTripNumber.font = [UIFont boldSystemFontOfSize:18];
}
lblTripNumber.textAlignment = UITextAlignmentLeft;
lblTripNumber.backgroundColor = [UIColor clearColor];
lblTripNumber.tag = kTripNumberLabelTag;
lblTripNumber.textColor = [UIColor greenColor];
[cell.contentView addSubview:lblTripNumber];
}else
{
// A reusable cell was available, so we just need to get a reference to the subviews using their tags.
lblTripNumber = (UILabel *)[cell.contentView viewWithTag:kTripNumberLabelTag];
lblTripState = (UILabel *)[cell.contentView viewWithTag:kTripStateLabelTag];
// imgTripState = (UILabel *)[cell.contentView viewWithTag:kTripImageTag];
}
lblTripNumber.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
lblTripState.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
int indCount = indexPath.row -1;
TripDetails *trip = [tripList objectAtIndex:indCount];
lblTripNumber.text = trip.tripNumber;
lblTripState.text = trip.tripState;
// Configure the cell...
return cell;
}
答案 0 :(得分：1)
您的TableData中可能只有6个项目。
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [TableData count];
}
在你的情况下，'TableData'是'tripList'。
答案 1 :(得分：1)
我知道了，我删除了
if (cell == nil)
它工作正常。实际上它在第一个标题行中寻找它的标签并且无法替换它的值，因此产生了问题。
答案 2 :(得分：0)
检查你的viewFor标题部分。如果您使用数组作为标题视图，则此数组对象未正确分配内存。它使用最后一个对象来解决所有问题，并替换旧的。在向其添加对象之前，为数组创建内存分配对象。告诉我这是否是解决方案
答案 3 :(得分：0)
您的代码尝试重用单元格，但您编写的方式是错误的。有关适当的模式，请参阅我的回答here。在坚果壳中，您应该只在if (cell == nil)部分中定义共享单元属性，行特定属性（如标签文本等）应在此部分之外定义。对于索引为0的行，情况并非如此。