Hey guys when I show talbeview there are a lot of empty rows... How can I make the number of rows shown exactly equal to [NSARRAY COUNT]
I am sure
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
return the right number of rows that it should show
Set the table footerView to a view that doesn't render anything (but not nil).
tableView.tableFooterView = [[[UIView allocate] init] autorelease];
You've got the right place and really have the answer already. Here it is in code:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [yourDataArrayName count];
}
Substitute the actual name of your table for tableView and the actual name of your array for yourDataArrayName, obviously.
You've got the right place and really have the answer already. Here it is in code:
try it may be helped....
(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return totalRows;
}
totalRows= (you want so no. of rows )
and
(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier = [NSString stringWithFormat:#"%i %i",indexPath.row,indexPath.section];
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
cell.accessoryType = UITableViewCellAccessoryNone;
cell.accessoryType = UITableViewCellAccessoryNone;
cell.highlighted = YES
}
Related
I am using tableView but it does not enter in number of sections and number of rows in tableView here is the code
here is the code for number of sections and number of rows.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
Number of Rows in Sections Code
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSLog(#"Cell is");
return 1;
}
Cell Values
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle
reuseIdentifier:CellIdentifier] autorelease];
cell.selectionStyle=UITableViewCellSelectionStyleNone;
}
MultipleDetailViewsWithNavigatorAppDelegate *appDelegate = (MultipleDetailViewsWithNavigatorAppDelegate *)[[UIApplication sharedApplication] delegate];
cell.textLabel.font=[UIFont fontWithName:#"Helvetica" size:16];
cell.textLabel.textAlignment=UITextAlignmentLeft;
PublishData *theCellData = [appDelegate.publishArray objectAtIndex:indexPath.row];
NSLog(#"Cell is");
cell.textLabel.text =#"Test";
return cell;
}
Have you set datasource and delegate for the table view? I suspect not. Please set it in code or xib and check.
How you are have added table view ?. if you have added using interface builder then set your datasoure for the tableview. If you have added pro-grammatically then set [tableview setDatasoucre:self];
I have a simple UITableView with 9 cells. When I move the table up or down by scrolling, I get EXE bad access. NSZombieMode points at the cellForRowAtIndexMethod.
- (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.textLabel.text = [lineArray objectAtIndex:indexPath.row];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
Can anyone suggest what is wrong ?
If ARC is disabled then add autorelease when you create cell
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier] autorelease];
This can be the reason of the leaks. Check also lineArray since it used like ivar and probably this array was released at some point.
My guess is you're trying to access an element in your lineArray that is out of bounds.
IE: indexPath.row is returning a 6 when you only have 3 elements in your lineArray.
It's occurring when you scroll down as it triggers cellForRowAtIndexPath to be called on higher number rows (rows that with indexPath.row > 3 for example)
I'll go one more step and guess that you're probably statically returning numberOfRowsForSection.
Setting it to lineArray.count should fix it.
According to my understanding :-
1) in the lineArray you have some 9 items but in the numberOfRowsInSection you are returning the rowCount more than the items in the array and so it crashes and points to ceelForRowAtIndex.
2) Here is the sample code for your understanding :-
- (void)viewDidLoad
{
[super viewDidLoad];
lineArray = [[NSMutableArray alloc]initWithObjects:#"1",#"2",#"3",#"4",#"5", nil];
tableView1 = [[UITableView alloc]init];
tableView1.delegate = self;
tableView1.dataSource = self;
tableView1 .frame =self.view.frame;
[self.view addSubview:tableView1];
}
- (void)viewDidUnload
{
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [lineArray count];
//return ;
}
- (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.textLabel.text = [lineArray objectAtIndex:indexPath.row];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
}
im learning Obj-C and im treating to make my first UITableView with "Hello world" text.
My problem is i can't show on screen right edit button. this is my code:
- (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] autorelease];
}
[[cell textLabel] setTextAlignment:(UITextAlignmentCenter)];
cell.textLabel.text=#"Hello World";
//[cell.textLabel setText:#"Hola2"];
return cell;
}
and:
- (void)viewDidUnload
{
[super viewDidUnload];
self.navigationItem.rightBarButtonItem=self.editButtonItem;
}
Am I missing something?
Thanks for help.
self.navigationItem.rightBarButtonItem=self.editButtonItem;
This must go in the viewDidLoad
are you also setting the rows and sections correct?
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return 1;
}
Hi need to create a table view with only one cell selectable like this img.
- (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tv dequeueReusableCellWithIdentifier:#"CellWithSwitch"];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"CellWithSwitch"] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.textLabel.font = [UIFont systemFontOfSize:14];
if(indexPath.row == 0)
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
cell.textLabel.text = #"Sound Effects";
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)path {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:path];
if(path.row == 0)
{
if (cell.accessoryType == UITableViewCellAccessoryCheckmark) {
cell.accessoryType = UITableViewCellAccessoryNone;
} else {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
}
if you like only one row selectable you have to manage this in the methods of the table:
in - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
you need to implement the selection logic. if you click on a non-selected object, you select it and deselect all others, or only the one that is currently selected (if there is one selected). If you click on a selected object, just deselect it here
dont forget to do [theTableView reloadData];
in case your screen does not update if you change something in the table's content
then to redraw you just ensure that your method - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
ensures that the object which is selected is marked somehow. This way you can also do nice things like showing a toggle ON/OFF button or anything you may whish.
I have an array of URL Links that I'm trying to load into a Grouped UITableView. The goal being that I have numberOfSectionsInTableView return [url count] so I can have number of sections equal to the number of url links. Then in numberOfRowsInSection returns 1 so I only populate 1 URL for each section.
The trouble I'm having is to ensure that cellForRowAtIndexPath won't keep grabbing the first url link. I suspect it's because it's always grabbing the first url because the rowIndex is always zero.
Any ideas how to ensure that each cell in my UITableView is populated with a different url link?
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [newsItems count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 1;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *MyIdentifier = #"MyIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier] autorelease];
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:MyIdentifier] autorelease];
cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
cell.textLabel.numberOfLines = 5;
}
// Configure the cell. Get the title of the news item that was parsed out
int newsItemIndex = [indexPath indexAtPosition: [indexPath length] - 1];
[cell.textLabel setText:[[newsItems objectAtIndex: newsItemIndex] objectForKey: #"link"]];
return cell;
}
From what i see here you are making many sections with 1 row each...im not sure that ayou are getting the index correctly you can do something like this
int newsIntemIndex=indexPath.section
that should do it for you