- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
if(section != 0) {
UIView *view = [[[UIView alloc] initWithFrame:CGRectMake(10, 10, 100, 30)] autorelease];
view.backgroundColor = [UIColor redColor];
return view;
} else {
return tableView.tableHeaderView;
}
}
This is my implementation of viewForHeaderInSection but whatever frame I make it's always showing me the same red frame. Do you see any problem with my code?
Image:
UPDATE:
Mhm now my red block is higher but my first tableHeader is now somehow hidden. The first one was implemented with the titleForHeaderInSection. I thought I just implement the height of the tableHeader height but that doesnt work
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
if(section == 1)
return 30;
else
return tableView.tableHeaderView.frame.size.height;
}
You need to implement this delegate method
- (CGFloat)tableView:(UITableView *)tableView
heightForHeaderInSection:(NSInteger)section;
In your case, you can simply return 30;.
Also, you are leaking view!
Your [view release] happens after the return. But as soon as the return happens the method execution is aborted and your release is never called.
So you want this instead
UIView *view = [[[UIView alloc] initWithFrame:CGRectMake(10, 10, 100, 30)] autorelease];
And get rid of the explicit release down below.
Related
I have a UITableView with sections and the title for them I m setting in titleForHeaderInSection like this:
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return [NSString stringwithFormat :#"Section %d",section];
}
Defaulty it comes with graycoloured background with textcolor white.How can I change it to some other colour.?
Gone through google and found to set in viewForHeaderinSection.
But I did't use it to setheaders .So I dont want to write in it.
How can I write it in titleForHeaderInSection?
In iOS 6 and later
[[UILabel appearanceWhenContainedIn:[UITableViewHeaderFooterView class], nil] setTextColor:[UIColor whiteColor]];
[[UILabel appearanceWhenContainedIn:[UITableViewHeaderFooterView class], nil] setFont:[UIFont systemFontOfSize:18.0f]];
[[UIView appearanceWhenContainedIn:[UITableViewHeaderFooterView class], nil] setBackgroundColor:[UIColor redColor]];
titleForHeaderInSection : This delegate of UITableView is used to set only text. You can see below it's return type it NSString.
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
// fixed font style. use custom view (UILabel) if you want something different
}
In order to achieve the customized view for a section header your only option is viewForHeaderInSection delegate method. I can assure there's no way you can set the view for header using titleForHeaderInSection Also, viewForHeaderInSection acts exactly same as titleForHeaderInSection You can see implement it as below :
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
//Customized your view however you want.
return myCustomizedView;
}
- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection: (NSInteger)section
{
UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 30)] autorelease];
if (section == integerRepresentingYourSectionOfInterest)
[headerView setBackgroundColor:[UIColor redColor]];
else
[headerView setBackgroundColor:[UIColor clearColor]];
return headerView;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *tempView=[[[UIView alloc]initWithFrame:CGRectMake(0,0,300,25)]autorelease];
tempView.backgroundColor=[UIColor grayColor];
UILabel *tempLabel=[[UILabel alloc]initWithFrame:CGRectMake(0,0,300,25)];
tempLabel.backgroundColor=[UIColor clearColor];
NSString * headerText = [NSString stringWithFormat:#"%d",section];
tempLabel.text= headerText;
[tempView addSubview: tempLabel];
[tempLabel release];
return tempView;
}
And
- (float)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 25;
}
I want to display a table with custom header titles.
The table view is attached to a controller class that implements the tableview delegate and data source protocols but is not a subclass of UIViewController because the table is a subview to be displayed above another tableview.
some snippets of my code:
The tableview is created programmatically:
_myListView = [[UITableView alloc] initWithFrame:tableFrame style:UITableViewStyleGrouped];
[_myListView setDataSource:self.myListController];
[_myListView setDelegate:self.myListController];
[_myListView setBackgroundColor:darkBackgroundColor];
where myListController is a strong property in the class.
For the number of rows in sections:
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
…
return count;
}
The number of sections:
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [someDelegate sectionCount];
}
For the custom Header View:
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView* headerView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, SectionHeaderHeight)];
UILabel* sectionHeaderTitle = [[UILabel alloc] initWithFrame:CGRectMake(20, 3, 300, 24)];
[headerView setBackgroundColor:[UIColor clearColor]];
sectionHeaderTitle.text = [self myTitleForHeaderInSection:section];
sectionHeaderTitle.textColor = [UIColor whiteColor];
sectionHeaderTitle.textAlignment = UITextAlignmentLeft;
[headerView addSubview:sectionHeaderTitle];
return headerView;
}
For the custom headerViewHeight (as required since iOS5):
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if ( [self tableView:tableView numberOfRowsInSection:section] > 0) {
return SectionHeaderHeight;
} else {
return 0;
}
}
Sadly, the tableview does not display any section headers just as if I would return nil.
However, I have checked with a breakpoint, that the code actually returns an UIView.
Everything else works fine.
What am I missing? PLease, don't hesitate to make me feel ashamed of my self.
I don't really understand why you want to use a custom view, and not the "standard" one ? You may have your reasons, but I don't see anything in your code telling me why :)
I would personally just use this:
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if (section == 0) return #"First section header title";
if (section == 1) return #"Second section header title";
else return nil;
}
Tell me if that's not what you're looking for !
I seem to have found a solution:
I have created a lazy loading strong property for each header view I want to display. (luckily there are only three)
Now the views are shown.
It seems that the header views got deallocated without the strong references before the table was rendered.
Could it be that there is a connection to the class implementing the table view delegate and data source protocols is not a UIViewController?
Text Color you change it to Black color and check once.
sectionHeaderTitle.textColor = [UIColor blackColor];
you try this code this work on my side :-)
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *view=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 24)];
UIImage *myImage = [UIImage imageNamed:#"SectionBackGround.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:myImage];
imageView.frame = CGRectMake(0,0,320,24);
UIImage *imageIcon = [UIImage imageNamed:#"SectionBackGround.png"];
UIImageView *iconView = [[UIImageView alloc] initWithImage:myImage];
iconView.frame = CGRectMake(0,0,320,24);
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 24)];
label.text = [tableView.dataSource tableView:tableView titleForHeaderInSection:section];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont boldSystemFontOfSize:14];
[view addSubview:imageView];
[view addSubview:iconView];
[view addSubview:label];
return view;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 24;
}
any ideas why I can't reduce/remove the space between cells in a Grouped UITableView (one cell per section). I'm including the following in the controller:
- (CGFloat) tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 0.0;
}
- (CGFloat) tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {
return 0.0;
}
I'm still getting spaces between cells even with this code. Put a border around the cells and the space isn't from the cells themselves.
As per PengOne's suggestion to look at the answer here, what I didn't have in place that made it work was the following:
-(UIView*)tableView:(UITableView*)tableView viewForHeaderInSection:(NSInteger)section
{
return [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 0, 0)] autorelease];
}
-(UIView*)tableView:(UITableView*)tableView viewForFooterInSection:(NSInteger)section
{
return [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 0, 0)] autorelease];
}
I have a UITextView in a UITableViewCell contentview and allow the cell to autoresize so that the entered text is fully shown - what I am trying to accomplish is an autoresizing cell like the native iOS4 Contacts app has, when you enter "notes" for contact - i.e. when the contentSize of the textView changes - I call reloadRowsAtIndexPaths and in the delegate's heightForRowAtIndexPath I provide the new height for row - this does the job, however it is not nice and smooth like the contact's app - I am almost sure Apple uses some undocumented trick in that app to make the cell's contentView expand smooth and animated without calling reloadRowsAtIndexPaths. My question is how would you suggest to implement such functionality? I hope I didn't miss any details in explanation.
Try this code below, it will be help. You don't have to use any reload functions like reloadRowsAtIndexPaths.
// textview delegate
- (void)textViewDidChange:(UITextView *)textView {
if (contentView.contentSize.height > contentRowHeight) {
contentRowHeight = contentView.contentSize.height;
[theTableView beginUpdates];
[theTableView endUpdates];
[contentView setFrame:CGRectMake(0, 0, 300.0, contentView.contentSize.height)];
}
}
// tableview delegate
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
CGFloat height;
if (indexPath.row == 0)
height = kTitleRowHeight;
else
height = contentRowHeight;
return height;
}
I found the best way to solve this.
First off, of course, you're going to want to create your UITextView and add it to your cell's contentView. I created an instance variable of UITextView called "cellTextView" Here is the code that I used:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"Cell"];
if (!cellTextView) {
cellTextView = [[UITextView alloc] initWithFrame:CGRectMake(5.0, 5.0, cell.bounds.size.width - 30.0, cell.bounds.size.height - 10.0)]; // I use these x and y values plus the height value for padding purposes.
}
[cellTextView setBackgroundColor:[UIColor clearColor]];
[cellTextView setScrollEnabled:FALSE];
[cellTextView setFont:[UIFont boldSystemFontOfSize:13.0]];
[cellTextView setDelegate:self];
[cellTextView setTextColor:[UIColor blackColor]];
[cellTextView setContentInset:UIEdgeInsetsZero];
[cell.contentView addSubview:cellTextView];
return cell;
}
Then, create an int variable called numberOfLines and set the variable to 1 in your init method. Afterwards, in your textViewDelegate's textViewDidChange method, use this code:
- (void)textViewDidChange:(UITextView *)textView
{
numberOfLines = (textView.contentSize.height / textView.font.lineHeight) - 1;
float height = 44.0;
height += (textView.font.lineHeight * (numberOfLines - 1));
CGRect textViewFrame = [textView frame];
textViewFrame.size.height = height - 10.0; //The 10 value is to retrieve the same height padding I inputed earlier when I initialized the UITextView
[textView setFrame:textViewFrame];
[self.tableView beginUpdates];
[self.tableView endUpdates];
[cellTextView setContentInset:UIEdgeInsetsZero];
}
Finally, paste this code into your heightForRowAtIndexPath method:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
float height = 44.0;
if (cellTextView) {
height += (cellTextView.font.lineHeight * (numberOfLines - 1));
}
return height;
}
I tried to override the second tableHeaderView. But it seems that the height of it in the method heightForHeaderInSection seems to be 0. Can't explain it, do I have to put it in a iVar because in the viewForHeaderInSection I can set the view without any problems.
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if(section == 0)
return #"Adding a new list";
else
return #"Other lists";
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
if(section == 0) {
return tableView.tableHeaderView;
} else {
UIView *view = [[[UIView alloc] initWithFrame:CGRectMake(10, 10, 100, 50)] autorelease];
view.backgroundColor = [UIColor redColor];
return view;
}
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
if(section == 0)
return tableView.tableHeaderView.frame.size.height;
else
return 30;
}
I think you are confusing the table header and the header for each section, they are different. There is no "second tableHeaderView", a UITableView has one tableHeaderView and then depends on the viewForHeaderInSection and heightForHeaderInSection methods to place custom header views for each section, otherwise you just use titleForHeaderInSection to place text there.