I have created a UITableVIewCell from a XIB file. However, it doesn't get displayed on the application.
Here's my code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
[self.tablev registerClass:[MCell class] forCellReuseIdentifier:#"c"];
MCell *cell = (MCell*)[tableView dequeueReusableCellWithIdentifier:#"c"];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"MCell" owner:self options:nil];
cell = (MCell *)[nib objectAtIndex:0];
}
cell.la.text=#"This is from custom cell";
//cell.textLabel.text=#"from label";
return cell;
The text This is from custom cell doesn't get displayed. But, cell.textLabel.text=#"from label"; gets executed perfectly and displays the text. I think my UITableViewCell hasn't got initialised in the code. Can someone look into this ?
You have to put this method
[self.tablev registerNib:[UINib nibWithNibName:#"MCell"
bundle:[NSBundle mainBundle]] forCellReuseIdentifier:#"c"];
in your viewDidLoad: or awakeFromNib: if you are using tableView in an UIView XIB file or any initializing method where you initialize your other properties and variables.
and in your tableView:cellForRowAtIndexPath: method, do the following
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
MCell *cell = (MCell*)[tableView dequeueReusableCellWithIdentifier:#"c"];
cell.la.text=#"This is from custom cell";
//cell.textLabel.text=#"from label";
return cell;
}
You might need to register your nib file:
[self.tableView registerNib:[UINib nibWithNibName:#"MCell"
bundle:[NSBundle mainBundle]]
forCellReuseIdentifier:#"c"];
Related
Im using a tableview with custom cell.
My custom cell has got label and I have defined its outlet at 'StatutoryMappingCell.h'
Following isn cellForRowAtIndexPath method,
StatutoryMappingCell * cell = [tableView dequeueReusableCellWithIdentifier:#"myCell"];
if (!cell)
{
[tableView registerNib:[UINib nibWithNibName:#"KnowledgeMainCell" bundle:nil] forCellReuseIdentifier:#"myCell"];
cell = [tableView dequeueReusableCellWithIdentifier:#"myCell"];
}
return cell;
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(StatutoryMappingCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
cell.statMapping.text = [self.items objectAtIndex:indexPath.row];
}
The problem is that the cells are not visible when I run my code. But the Why is that so?
This is my xib scene...
This is my storyboard scene
Look in your interface builder - you shuld have not conntected your custom cell, you should set it as a files owner , if yes check once the labels are connected or not,
try these code
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"identifier";
CellItemList *cellA = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cellA == nil)
{
// Load the top-level objects from the custom cell XIB.
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:(isIpad)?#"CellItemList~ipad":#"CellItemList" owner:self options:nil];
// Grab a pointer to the first object (presumably the custom cell, as that's all the XIB should contain).
cellA = (CellItemList *)[topLevelObjects objectAtIndex:0];
}
cellA.statMapping.text = [tableData objectAtIndex:indexPath.row];
return cellA;
}
I have XIB that contain UITableView and in same XIB i created UITableViewCell, I did not set any class to cell, I just set identifier to the cell.
Now I want to load that cell to tableview delegate methd cellForRowAtIndexPath
i did is :
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"SimpleTableItem";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
return cell;
}
but it create new cell that doesn't include xib that i created.
So how do i get that cell from same xib that table view has ?
If you are creating a custom cell, then it will be better if you create custom classes of UITableViewCell type and then instantiate your UITableViewCell class in method.If you dont want to create custom class then below is the code that can help you:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CustomCellIdentifier = #"SimpleTableItem";
UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:CustomCellIdentifier];
if (cell == nil)
{
cell = (UITableViewCell *)[[[NSBundle mainBundle] loadNibNamed:#"TMPartnerLoyalty" owner:self options:nil] objectAtIndex:0];
}
return cell;
}
Here, TMPartnerLoyalty is name of the xib.
please write this code in viewdidload , i hope it will work for you.
NSString *nibName = #"give your xib name here that contain Tablecell";
NSString *simpleTableIdentifier = #"SimpleTableItem";
UINib *customCellNib = [UINib nibWithNibName:nibName bundle:nil];
[tableView registerNib:customCellNib forCellReuseIdentifier:simpleTableIdentifier];
If you use prototype cell,Identifier name must same as dequeueReusableCellWithIdentifier name
NOTE:If you use prototype cell, you don't need to register the cell.Because Prototype cell is not a CustomCell
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"cell"];
if(cell == nil)
{
cell =[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = #"";
return cell;
}
If you use UITableViewcell(Custom cell),follow the below steps
1.in viewDidLoad you must register the UITableViewCell or Custom Cell
UINib *cellNib = [UINib nibWithNibName:#"YourUITableViewCell" bundle:[NSBundle mainBundle]];
[self.tableView registerNib:cellNib forCellReuseIdentifier:#"cell"];
2.OR in cellForRowAtIndexPath you can write the code below like this
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *customTableIdentifier=#"cell";
YourUITableViewCell *cell=(YourUITableViewCell*)[tableView dequeueReusableCellWithIdentifier:customTableIdentifier];
if (cell==nil)
{
NSArray *nibs=[[NSBundle mainBundle]loadNibNamed:#"YourUITableViewCell" owner:self options:nil];
cell=[nibs objectAtIndex:0];
}
cell.yourTableViewCellLabel.text = #"";
cell.yourTableViewCellTextField.text = #"";
cell.yourTableViewCellButton.text = #"";
return cell;
}
At first I had this code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
DropDownTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"DropDownTableViewCell"];
if (!cell) {
NSArray *topLevelObjects =
[[NSBundle mainBundle] loadNibNamed:#"DropDownView"
owner:self
options:nil];
for (DropDownTableViewCell *object in topLevelObjects) {
if ([object class] == [DropDownTableViewCell class]) {
cell = object;
break;
}
}
NSAssert(cell, #"Cell must not be nil");
}
cell.nameLabel.text = [self.dataSource buttonDownPicker:self stringForRowAtIndexPath:indexPath];
return cell;
}
At first moment when I show tableView and tableView cell's starts loading from nib I have UI freezing for a few seconds (caused by loading from nib for EVERY displayed cell). This can be solved by loading cell from nib earlier:
- (void)awakeFromNib {
DropDownTableViewCell *cell = [[[NSBundle mainBundle] loadNibNamed:#"DropDownView" owner:self options:nil] objectAtIndex:0];
}
But this way looks "hacky". Is there more appropriate solution?
Edit according to given answers:
I've tried to use registerNib forCellIdentifier but it didn't LOAD nib, it just BINDING nib with identifier and at first time when tableView appears all cells causing load nib to memory
This is not "hacky" at all. For loading cells from a nib what you usually do is load the nib and then register the cell for reusable identifier of your choosing. For instance in one of my projects I have a view controller with a table view. In the view did load I call:
[[NSBundle mainBundle] loadNibNamed:#"ChannelListCell" owner:self options:nil];
[self.channelListTableView registerNib:[UINib nibWithNibName:#"ChannelListCell" bundle:nil] forCellReuseIdentifier:#"channelListCell"];
Then in the cell for row at index path:
cell = [tableView dequeueReusableCellWithIdentifier:#"channelListCell" forIndexPath:indexPath];
In your case the dequeued cell is always nil since you did not register it.
Try like this.....
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UINib *nib = [UINib nibWithNibName:#"" bundle:nil];
[self.tblview registerNib:nib forCellReuseIdentifier:#"DropDownTableViewCell"];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
DropDownTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"DropDownTableViewCell"];
return cell;
}
You can register your class first like bellow in your viewDidLoad. It make faster and better
[self.tableViewObject registerClass: [DropDownTableViewCell class]forCellReuseIdentifier:#"DropDownTableViewCellIdentifier"];
And please add following method in your DropDownTableViewCell.m file
-(id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"DropDownTableViewCell" owner:self options:nil];
// Grab a pointer to the first object (presumably the custom cell, as that's all the XIB should contain).
self = [topLevelObjects objectAtIndex:0];
return self;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier=#"DropDownTableViewCellIdentifier";
DropDownTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier: CellIdentifier];
//Access all cell properties here.
return cell.
}
Please refer https://stackoverflow.com/a/30954273/914111 for better knowledge.
I want use registerNib: forCellReuseIdentifier: method in my app
when i was made custom cell with xib file is fine. (ex:SwitchTableViewCell2.xib )
because file name is xib name.
working well code:
[self.tableView registerNib:[UINib nibWithNibName:#"SwitchTableViewCell2" bundle:nil] forCellReuseIdentifier:#"xibcell"];
but did not working when i made prototypecells on tableview in mainStoryboard.
how to get xibname of prototypecell on storyboard?
anybody can test this link: github.com/Kernelzero/test_nav
add image files here
this controller name : 'PushSettingController'
this controller's storyboard id: 'pushSetting'
If you use prototype cell,Identifier name must same as dequeueReusableCellWithIdentifier name
NOTE:If you use prototype cell, you don't need to register the cell.Because Prototype cell is not a CustomCell
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"switchcell"];
if(cell == nil)
{
cell =[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = #"";
return cell;
}
But if you use custom cell,follow the below steps
1.in viewDidLoad you must register the custom cell
UINib *cellNib = [UINib nibWithNibName:#"SwitchTableViewCell2" bundle:[NSBundle mainBundle]];
[self.tableView registerNib:cellNib forCellReuseIdentifier:#"switchcell"];
2.OR in cellForRowAtIndexPath you can write the code below like this
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *customTableIdentifier=#"switchcell";
SwitchTableViewCell2 *cell=(SwitchTableViewCell2*)[tableView dequeueReusableCellWithIdentifier:customTableIdentifier];
if (cell==nil)
{
NSArray *nibs=[[NSBundle mainBundle]loadNibNamed:#"SwitchTableViewCell2" owner:self options:nil];
cell=[nibs objectAtIndex:0];
}
cell.yourSwitchTableViewCell2Label.text = #"";
cell.yourSwitchTableViewCell2TextField.text = #"";
cell.yourSwitchTableViewCell2Button.text = #"";
return cell;
}
Take the registerNib call out when using the Storyboard. If you've set the storyboard up correctly, the prototype cells are already registered to the tableView.
There's no need to load it from nib. Call:
Objective-C
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:#"switchcell];
Swift
let cell = tableView.dequeueReusableCellWithIdentifier("switchcell")
I have a tableview which shows data. But i want to customize the cells and i need a little help. So i have a nib for the tableview (HistoryViewController.xib). I just added the class and nib to customize the tableview cells (HistoryViewTableCell).
What are the steps i have to do next? I have this code already:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [tableData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"TableItem";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
NSDictionary * tempDictionary = [tableData objectAtIndex:indexPath.row];
cell.textLabel.text = [tempDictionary objectForKey:#"PickupAddress"];
return cell;
}
Try this link ..
Custom UITableViewCell Using Interface Builder
good demo with project try this
Customize Table View Cells for UITableView
hope it helps.
Please try below code -
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
HistoryViewTableCell *cell = [tableView dequeueReusableCellWithIdentifier:#"HistoryViewTableCell"];
if (cell == nil) {
// Create a temporary UIViewController to instantiate the custom cell.
UIViewController *temporaryController = [[UIViewController alloc] initWithNibName:#"HistoryViewTableCell" bundle:nil];
// Grab a pointer to the custom cell.
cell = (HistoryViewTableCell *)temporaryController.view;
}
return cell;
}
OR
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
HistoryViewTableCell *cell = [tableView dequeueReusableCellWithIdentifier:#"HistoryViewTableCell"];
if (cell == nil) {
// Load the top-level objects from the custom cell XIB.
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"HistoryViewTableCell" owner:self options:nil];
// Grab a pointer to the first object (presumably the custom cell, as that's all the XIB should contain).
cell = [topLevelObjects objectAtIndex:0];
}
return cell;
}