I'm loading a tableview and would like to grey out object 2 and objet 4 and make them disabled to user interaction.
In .h I have
#property (nonatomic, strong) NSArray *list;
and .m:
- (void)viewDidLoad
{
[super viewDidLoad];
self.list = [[NSArray alloc] initWithObjects:#"Object 1", #"Object 2", #"Object 3", #"Object 4", #"Object 5", nil];
}
and
- (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 = [list objectAtIndex:[indexPath row]];
return cell;
}
I've tried getting the object using
object = [self.list objectAtIndex: 2] to get Object 2 but it doesn't do anything.
How do I go about doing this?
Is textLabel a UILabel or a UITextField? The naming leaves me to wonder. Assuming it's a UILabel and you want to prevent interaction with the cell (and controls in it) you could do the following.
- (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 = [list objectAtIndex:[indexPath row]];
if (indexPath.row == 1 || indexPath.row == 3) {
cell.userInteractionEnabled = NO;
} else {
cell.userInteractionEnable = YES;
}
return cell;
}
Or are you just trying to prevent users from selecting the cell? In which case you should probably consider overriding tableView:willSelectRowAtIndexPath: in the UITableViewDelegate.
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.row == 1 || indexPath.row == 3) {
return nil;
return indexPath;
}
Related
I making the tutorial on running iPhone 5S, Xcode 6 and iOS 8. I want to display the textDetailLabel in a cell table. Can you help me what's the problem here. I already checked the syntax but it doesn't work
- (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];
}
Checklist *checklist = [self.dataModel.lists objectAtIndex:indexPath.row];
cell.textLabel.text = checklist.name;
cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
int count = [checklist countUncheckedItems];
if ([checklist.items count] == 0) {
cell.detailTextLabel.text = #"(No Items)";
} else if (count == 0) {
cell.detailTextLabel.text = #"All Done!";
} else {
cell.detailTextLabel.text = [NSString stringWithFormat:#"%d Remaining", count];
}
return cell;
}
Move
static NSString *CellIdentifier = #"Cell";
out of the method, make it public.
When you create the table view write this line where you create the table (in viewDidLoad or your method where you create the table)
[dataTable registerClass:[UITableViewCell class] forCellReuseIdentifier:tableIdentifier];
Remove cell condition from
(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
method because your table view cell is not nil and you can't set the cell style.
So you have to write
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
I have UITableView with prototype cell.I have a label in cells with various values(text value).
when add a new row, some of labels in new rows created with previous cell values not default values:
What can i do?
Is my question clear?
This is my code:
- (void)viewDidLoad
{
[super viewDidLoad];
gamers = [[NSMutableArray alloc] initWithObjects:#"Player1",#"Player2", nil];
}
- (IBAction)btnAddRow:(id)sender {
[gamers addObject:#"new player"];
[_tableView reloadData];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *tableIdentifier = #"gamerCell";
nTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:tableIdentifier];
if (cell == nil) {
cell = [[nTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:tableIdentifier];
}
cell.lblTitle.text = [gamers objectAtIndex:indexPath.row];
return cell;
}
Please find the updated project in the link
UITableView-dynamic-row-buttons
Hope this helps.
Where do you update the score? if you are not doing, make, according to your logic, and then set this value in
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *tableIdentifier = #"gamerCell";
nTableViewCell *cell = (nTableViewCell *)[tableView dequeueReusableCellWithIdentifier:tableIdentifier];
if (cell == nil) {
cell = [[nTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:tableIdentifier];
}
cell.lblTitle.text = [gamers objectAtIndex:indexPath.row];
cell.lblScore.text = [NSString stringWithFormat:#"%i", (int)scoreProperty];
return cell;
}
have a UITableViewCell "postCell" that is an IBOutlet and is attached to a cell I have placed in my .xib. To set the text label:
- (void)viewDidAppear:(BOOL)animated
{
postCell.textLabel.text = #"TEXT";
}
Nothing ever appears.
Edit: This cell is not part of a Table View. Every answer I have seen is assuming it is. This is a single UITableViewCell.
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 1;
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
PostCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[PostCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = #"text";
return cell;
}
You can set text label for the cell in method cellForRowAtIndexPath, please see example below.
- (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.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
cell.textLabel.text = #"Cell Title";
return cell;
}
There are a few delegate methods that you need to implement. Here are the two most important ones
tableView:cellForRowAtIndexPath:
tableView:numberOfRowsInSection:
Here's a full tutorial on how to implement a table view.
http://www.raywenderlich.com/?p=1797
i'm trying to do a selection list in UITableView but whenever i tap in a row, two row are marked. For example if i tap the first row it adds a checkmark to row = 0 and row = 11. I think the problem is caused by reuse of cells but i don't understand how solve it.
I attach my code .h:
#interface tabellaViewController : UITableViewController
#property (nonatomic, strong) NSArray *listaingredienti;
#end
and my code .m:
- (void)viewDidLoad
{
[super viewDidLoad];
_listaingredienti = [NSArray arrayWithObjects:#"formaggio", #"crudo", #"pomodorini", #"fossa", #"bresaola", #"funghi", #"salame", #"fontina", #"rucola", #"radicchio", #"peperoni", #"ciccioli", #"squacquerone", #"gorgonzola", #"salsiccia", #"cipolla", #"feta", #"acciughe", #"pecorino", nil];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [_listaingredienti count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = [_listaingredienti objectAtIndex:indexPath.row];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:[tableView indexPathForSelectedRow]
animated:NO];
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (cell.accessoryType == UITableViewCellAccessoryNone) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
} else if (cell.accessoryType == UITableViewCellAccessoryCheckmark) {
cell.accessoryType = UITableViewCellAccessoryNone;
}
}
I've seen UITableView didSelectRowAtIndexPath add additional checkmark at tap where there is a similar post but i already use dequeueReusableCellWithIdentifier:CellIdentifier.
Anyone can help me?
Ok,
i'm just solved my question. Actually, the problem was in reuse of cells, but this code fix it.
Just replace in cellForRowAtIndexPath::
static NSString *CellIdentifier = #"Cell";
with:
NSString *CellIdentifier = [NSString stringWithFormat:#"MyReuseIdentifier %d",indexPath.row];
When I build and run there is nothing displayed. No text just empty cells.
Here is my code:
#import "plungerselection.h"
#implementation plungerselection
#synthesize tableData;
-(void) viewDidLoad
{
tableData = [[NSArray alloc] initWithObjects:#"Turbo", #"Hollow Turbo", #"Single Pad", #"Dual Pad", #"Bullet", nil];
[super viewDidLoad];
}
#pragma mark - TableView Data Source Methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;{
return [tableData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
{
UITableViewCell *cell = nil;
cell = [tableView dequeueReusableCellWithIdentifier:#"MyCell"];
if (cell == nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"MyCell"];
cell.textLabel.text = [tableData objectAtIndex:indexPath.row];
}
return cell;
}
#end
Make sure you have wired up the datasource and delegate connections in Interface Builder.
You are only setting the text in the cell if dequeueReusableCellWithIdentifier: returns nil which in this case doesn't happen (and even if it did it will only happen a few times before all the cells that are needed get in the queue). You should set the text outside of the if (cell == nil)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
{
UITableViewCell *cell = nil;
cell = [tableView dequeueReusableCellWithIdentifier:#"MyCell"];
if (cell == nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"MyCell"];
}
cell.textLabel.text = [tableData objectAtIndex:indexPath.row];
return cell;
}