I had two UITableView in my project and I am giving custom header to one table using the method:
- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
if(tableView.tag == 3)
{
SectionInfo *array = [self.sectionInfoArray objectAtIndex:section];
if (!array.sectionView)
{
NSString *title = array.groupdeck.groupTitle;
array.sectionView = [[SectionView alloc] initWithFrame:CGRectMake(0, 0, tblData.bounds.size.width, 45) WithTitle:title Section:section delegate:self];
}
return array.sectionView;
}
else{
return 0;
}
return 0;
}
It is giving the header to the table with the tag 3 like:
But it is giving the default header to other table also even return 0 else condition like:
What am I missing?
Try :
otherTable.sectionHeaderHeight = 0.0;
You don't have to do anything else.
Or:
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if(tableView.tag == 3)
{
//Required height.
}
else
{
return 0.0;
}
}
It might be defaulting to the default header because you returned a 0. Try returning nil instead.
From: tableView:viewForHeaderInSection: default value?
With Reference to written in Apple Documentation
// custom view for header. will be adjusted to default or specified header height
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section;
It is displaying the default header which has height of 22 for grouped table and 10 for nongrouped table.
Also if the height of your view which you want to display in UITableView is more than above values then you also have to use the UITableView Delegate method
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section;
Related
i have a table view which has header for the tableview and another header for section.
the header for section has a button on top of it, when the button is pressed i need to change the size of this header.
i did changed the header size but the content within it does not change accordingly.
i even fixed it using this-
_isHeaderExtended = !_isHeaderExtended;
[self.testTable beginUpdates];
CGPoint point = testTable.contentOffset;
point.y = (_isHeaderExtended)? point.y - 1: point.y + 1;
[testTable setContentOffset:point animated:NO];
[self.testTable endUpdates];
my entire code is below
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 30;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
return testView;
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
[self.testTable beginUpdates];
CGFloat fl = (_isHeaderExtended)?200:100;
[self.testTable endUpdates];
return fl;
}
-(IBAction)buttonPushed:(id)sender {
_isHeaderExtended = !_isHeaderExtended;
[self.testTable beginUpdates];
CGPoint point = testTable.contentOffset;
point.y = (_isHeaderExtended)? point.y - 1: point.y + 1;
[testTable setContentOffset:point animated:NO];
[self.testTable endUpdates];
}
basically i need the content of the header to stretch according to the resize i use,
any ideas ???
I think it should be changed into:
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
if( _isHeaderExtended ){
return bigTestView;
} else {
return smallTestView;
}
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return _isHeaderExtended?200:100;
}
-(IBAction)buttonPushed:(id)sender {
_isHeaderExtended = !_isHeaderExtended;
[self.testTable reloadData];
}
Then you need to create a bigTestView and a smallTestView for the header.
Do this:
Eliminate the calls to beginUpdate and endUpdate in heightForHeaderInSection. They have no business in the datasource protocol.
Make sure the view you return in the header view is initialized and configured as intended. Presumably you do this in viewDidLoad.
In order to let the content of the header stretch, you can set this view's autoresizingMask to the desired value. Alternatively, you can use IB to configure the views to resize with the container view. You will have to return a properly sized view in viewForHeaderInSection.
A recommended design pattern would be quite different: put all the logic of the size into your datasource methods (heightForHeaderInSection and viewForHeaderInSection), i.e. you could check your _isHeaderExpanded variable. Then, in the toggle method, just reload the section.
In my view, i have three different tables. For first two tables, i have a fix height for each cell(e.g. say 30.0f for each cell of first table and 45.0f for each cell of second table) which i have adjusted in the storyboard according to the data in each table. For the third table, i want to have a different height for each cell. I tried the method
(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
But the issue with this technique is that this method is called for each table. As for the first two tables, i have adjusted the height in storyboard, i don't know what to do with them.And if i do:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
if(tableView == myTable) {
return 150.0;
}
}
As i have nothing to return for the else cases, the whole thing fails.
Any suggestion?
You need to return a height for the other tables.
If you have set there height in the storyboard you can access that height like so:
-(CGFloat) tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (tableView == myTable)
return 150.0;
return tableView.rowHeight;
}
tableView.rowHeight will be the height that you set in the storyboard
You should make your view controller delegate of all 3 tableviews and in heightForRowAtIndexPath check which table called the method:
So in viewDidLoad add:
myTable1.delegate = self;
myTable2.delegate = self;
myTable3.delegate = self;
and then:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
if(tableView == myTable1) {
return 150.0;
}
else if(tableView == myTable2) {
return 75.0;
}
else if(tableView == myTable3) {
return 75.0;
}
}
How about using the tag property? Set the tag for each table to a unique number then return height like this:
- (CGFloat) tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if (tableView.tag == 1)
{
return 150;
}
return 250;
}
I have 3 table views in one view and I was wondering why the tableView:cellForRowAtIndexPath: was not getting called.
#pragma mark -
#pragma mark <UITableViewDelegate>
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (tableView == self.mainVoucherTableViewController)
[self setSelectedIndex:indexPath.row];
}
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.mainVoucherTableViewController){
return 10;
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (tableView == self.mainVoucherTableViewController){
static NSString *MyIdentifier = #"MyReuseIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier];
}
cell.textLabel.text = #"THISTEXT";
return cell;
}
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if (tableView == self.mainVoucherTableViewController)
return 1;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
// The header for the section is the region name -- get this from the region at the section index.
if (tableView == self.mainVoucherTableViewController){
NSString * myString = [NSString stringWithFormat:#"HELLLO WORLD"];
return myString;
}
}
WOULD anyone know why this is? Basically this doesn't create any cell or display cells. It just displays the table views. :(
Just to consolidate a few things from above:
From your naming, your tableView is called mainVoucherTableViewController - just want to confirm that this is indeed a UITableView and not a UITableViewController? If it's a UITableViewController then the rest of this won't work for obvious reasons (or not so obvious - let me know and can explain further)
Make sure you have set the current viewController as the tableView's delegate and dataSource, either with the code below or in Interface Builder if you're using a XIB
self.mainVoucherTableViewController.delegate = self;
self.mainVoucherTableViewController.dataSource = self;
Make sure your numberOfRowsInSection function is being called and that you're returning non-zero (put in NSLogs, etc) and do the same for numberOfSections as well (actually numberOfSections isn't required if you're only using 1 section) - see UITableViewDataSource Protocol Reference: http://developer.apple.com/library/ios/#documentation/uikit/reference/UITableViewDataSource_Protocol/Reference/Reference.html
As per previous post, log your cellForRow (if points #1-3 are checked and working) at the beginning to make sure it's triggered, and just before the return. Also do an NSLog of the cell you're returning just to make sure it isn't nil.
Start off by logging inside your tableView:cellForRowAtIndexPath: method to see if it gets called at all outside your if statement as well as inside to help narrow down the issue.
Also try instead of comparing your:
tableView == self.mainVoucherTableViewController
Set the tableViews to have tag values instead. Then you can do:
if(tableView.tag == 100){ // tag number we assigned self.mainVoucherTableViewController via IB
//do your stuff here
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.mainVoucherTableViewController)
{
return 10;
}
else
{retun 5;
}
}
It display row in first table 10, second table show 5 rows.
The order of instance declaration does matter. For example, if you have a ivar called tableView:
WRONG
self.tableView.delegate = self;
self.tableView = [UITableView alloc] init];
CORRECT
self.tableView = [UITableView alloc] init];
self.tableView.delegate = self;
check UITableView Object Frame Size. maybe Frame size is not enough to draw Cell.
I am trying to set up a UITableView, with x amount of sections and X number of rows per section.
However I would like to add a single row to the top of my UITableView Is there is a way to hardcode this into the view?
I currently return the number of sections and rows per section based off a NSdictionary like so.
- (NSInteger)numberOfSectionsInTableView: (UITableView *)tableView
{
// Return the number of sections.
return [letterDictionary count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// returns the number of rows per section based off each entry in letterDictionary
currentLetter = [sectionLetterArray objectAtIndex:section];
return [[letterDictionary objectForKey:currentLetter] count];
}
You can add a "header" to the tableview.
In your tableview class:
self.tableView.tableHeaderView = yourView;
You cannot just add a row above your UItable within the table. If you just need a row of text why not use UITextField, UILabel or UITextView depending on your needs and just position it above your UItable whereever you like.
If I missunderstood you and you just like to add one row as the very first one in your first section, all you need to do sth like this:
if (section == 0) {
return [[letterDictionary objectForKey:currentLetter] count]+1;
} else
{
return [[letterDictionary objectForKey:currentLetter] count];
}
and ensure that when returning row for indexpath you have also a similar if-statement and return whatever you need for section == 0 and row == 0.
But this first row will certainly scroll away if you scroll down your table view - as said I am not sure exactly what you need.
You could try to customize your tableview section's header...
For example you can use something like this:
YourController.h
-(UIView *)headerView;
YourController.m
-(UIView *)headerView
{
UIView *header = [[UIView alloc] initWithFrame:CGRectZero];
// Place everything you want in your header
// using [header addSubview:yourSubview];
// Finally set header's frame and return it
header.frame = CGRectMake(0.0, 0.0, 320.0, 44.0);
return header;
}
// Use this to return header's height
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if (section == yourSection)
{
return [self headerView].frame.size.height;
}
else
{
return [self sectionHeaderHeight];
}
}
// Use this to return your view
-(UIView *)tableView:(UITableVIew *)tableVIew viewForHeaderInSection:(NSInteger)section
{
if (section == yourSection) // To show the header only on a specified section
{
return [self headerView];
}
else
{
return nil;
}
}
If you change your mind and want to customize below the tableView, your can use the same method changing Header with Footer.
Finally take a look at docs about these methods:
- tableView:viewForHeaderInSection:
- tableView:heightForHeaderInSection:
- tableView:viewForFooterInSection:
- tableView:heightForFooterInSection:
Hope this fits your needs!
Can I have the number of rows dynamically?
I'm trying to remove a tableView section header and I don'k know how... and I've taught that a solution would be to change the number of sections.
Right now my numberOfSectionsInTableView looks like:
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 2;
}
and
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
beTribesAppDelegate *appDelegate = [UIApplication sharedApplication].delegate;
switch (section) {
case 0:
return [appDelegate.firstArray count];
case 1:
return [appDelegate.secondArray count];
default:
return 0;
}
}
setting the title section like this:
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
sectionTitles = [[NSMutableArray alloc] init];
[sectionTitles addObject:#"firstSection"];
[sectionTitles addObject:#"secondSection"];
NSString *sectionText = [sectionTitles objectAtIndex:section];
return sectionText;
}
I am not sure to understand the question as the answer seems trivial: just change the implementation to return some dynamic value and you are done, right?
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return self.nbSections;
}
Where nbSections is a property to which you will assign the value you want so you can change it at any time you want. So what's the matter then?
PS: Of course, call [tableView reloadData] to recompute the content of your tableView and make the new value being taken into account obviously... maybe that's what you were missing?
To remove the section header you must set the header height to 0 like so
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
switch (section) {
case 0:
return 0;
default:
return 44;
}
}
this example will remove the first section header and all the others will be set to 44.
First thing to do would be to move the sectionTitles array into a property on your view controller, and initialise it in your init method.
Then when you want to change the title of a section change the value in the array and call [tableView reloadData]
Do you want to remove the whole section from the tableView or just the header? if you want to just remove the header set the item in the array to #""
If you want to remove the section altogether remove the item from sectionTitles and change your numberOfSectionsInTableView method to read:
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [sectionTitles count];
}