I want to know how can i create a custom UITableViewCell with three parts in the UITableViewCell like that:
Create a blank XIB with a UITableViewCell and design the cell dropping elements on it. Set arbitrary tags (1,2,3...) on each element so you can retrieve them later.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *identifier = #"xxx";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
if (cell == nil) {
NSArray *nibObjects = [[NSBundle mainBundle] loadNibNamed:#"NameOfTheBlankXIB" owner:self options:nil];
cell = [nibObjects objectAtIndex:0];
}
// get the elements inside the cell by tag and set a value on them
UILabel*label = (UILabel*)[cell viewWithTag: 1];
label.text = #"some text";
return cell;
}
Another way is to go to the NIB and set this view controller as the file owner and hook the the cell to a ivar of the view controller, like IBOutlet UITableViewCell *tableViewCell.
Now loading this with this instance as the owner automatically hooks the cell to the outlet tableViewCell.
[[NSBundle mainBundle] loadNibNamed:#"NameOfTheBlankXIB" owner:self options:nil];
// at this point the cell is hooked to the ivar so you get a reference to it:
cell = self.tableViewCell;
Related
This is very common question at SO though I have google and cross check my code few times but I am not able to figure out the crash
*** -[MyCustomCell performSelector:withObject:withObject:]: message sent to deallocated instance 0x96f6980
I have a CustomCell named MyCustomCell with XIB where I have 3 buttons for Facebook,Twitter,LinkedIn. I gave them all IBAction in CustomCell class.
When I click on any of them I get this kind of crash.
I am using ARC.
In my ViewController class I have cellForRowAtIndexPath
{
static NSString *CellIdentifier = #"MyCustomCell";
MyCustomCell *cell = (MyCustomCell*)[myTableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:CellIdentifier owner:self options:nil];
cell = (MyCustomCell *)[nib objectAtIndex:1];
}
return cell;
}
MyCustomCell.m
- (IBAction)facebookPressed:(BaseButton *)sender {
}
- (IBAction)twitterPressed:(BaseButton *)sender {
}
- (IBAction)linkedInPressed:(BaseButton *)sender {
}
I made this mistake just today! :) all you gotta do is replace the 2 lines
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"NameOfCustomCellNibFile" owner:self options:nil];
cell = [nib objectAtIndex:1];
You have to load the loadNibNamed: with the .xib file's name. I also thought it was with the identifier, but that is regarding the name that is referenced into the cell instead of the nib for the cell.
Hope this helps!
you can also code for Custom cell like this way. At nib of custom cell drag one UIButton and set it's tag in Xib. then use bellow Method:-
UIButton *btnMulSelected;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier =[NSString stringWithFormat:#"%d_%d",indexPath.section,indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
[[NSBundle mainBundle]loadNibNamed:#"cell_custome_iphones" owner:self options:nil];
cell = self.tblCell;
self.tblCell = nil;
btnMulSelected =(UIButton*)[cell.contentView viewWithTag:2];
[btnMulSelected addTarget:self action:#selector(MyButtonAction:) forControlEvents:UIControlEventTouchUpInside];
}
return cell;
}
Do not connect IBAction from Nib. just connect Custom-cell IBOutlate or put Unique UIButton tag from nib.
You've to keep the class name of cell and the XIB names same.
Keep the owner nil generally.
Also, if there is only 1 view ( i.e. 1 UITableViewCell in your case ), then this view is available at index 0 instead of index 1.
Inside the XIB file, make sure you link the button to your view itself, i.e. to IBOutlet or IBAction.
The linked buttons must be already added to your view, not floating outside in XIB. Otherwise they will instantiate and come at other indices of the loaded array. If you don't want a certain button for some time, then just keep it hidden.
So the code can be as below:
NSArray *views = [[NSBundle mainBundle] loadNibNamed:#"MyCustomCell" owner: nil options:nil];
MyCustomCell *cell = (MyCustomCell*)[views objectAtIndex:0];
Further make sure you do the following for creating XIB
Ok, then here goes the other portion simple process:
Create a MyCustomCell class derived from UITableViewCell class.
Create a separate .xib file with same name as MyCustomCell.xib.
Open .xib and delete the existing view in it. drag and drop a new
UITableViewCell from the objects of editor.
See the image to change the class name of the UITableViewCell in XIB to your class name.
Now the objectAtIndex 0 will return MyCustomCell.
Add all your buttons and other views in this UITableViewCell of your XIB.
Create a Table View.
then create a customize table View cell and place a button on cell and Now I try to get Table View index when click on index.
But when I click on button that place on cell It's not giving me the Index of list.
My Table View class name is SubMenuViewController and cell class name is SubMenuCell
and my code of SubMenuViewController is:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
ModelLocator *model = [ModelLocator getInstance];
static NSString *simpleTableIdentifier = #"SubMenuCell";
SubMenuCell *cell = (SubMenuCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"SubMenuCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
if (model.foodSubItemList) {
FoodSubItemVO* foodSubItemTemp = [model.foodSubItemList objectAtIndex:indexPath.row];
[cell.lbSubFoodItem setText: foodSubItemTemp.foodSubItemName];
[cell.lbPrice setText: foodSubItemTemp.price];
[cell setIndexPath:indexPath];
}
return cell;
}
and My SubMenuCell code here
- (IBAction)addItemIntoOrder:(id)sender {
NSLog(#"#%",indexPath);
NSLog(#"#%",indexPath.row);
}
indexPath declare in SubMenuCell.h
Your NSLog's are faulty; try this instead (mind that changed % and # order).
- (IBAction)addItemIntoOrder:(id)sender
{
NSLog(#"%#",indexPath);
NSLog(#"%#",indexPath.row);
}
Make sure that the addItemIntoOrder: action is hooked up to your delegate correctly in IB.
I have configured a table view cell, whose tables cell is loaded from another xib, both the filename and the identities are called,BlogViewControllerTableCell
Most of them works properly, but some contents in the cells keep changing while scrolling.
No matter I use the array value, or simply put the [indexpath row].
The below is the code,
I would be appreciate for your help.
Thanks.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"BlogViewControllerTableCell"];
if (cell == nil) {
// Load the top-level objects from the custom cell XIB.
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"BlogViewControllerTableCell" 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];
}
student_name.text = [NSString stringWithFormat:#"%#", [[student_list objectAtIndex:[indexPath row]] objectForKey:#"name"]];
return cell;
}
I am having trouble wiht UITableViewCell loaded from nib. I used apple documentation to that but I do't know where I am going wrong. UITableViewCell created through IB contains 5 UIlable. Nib are loaded perfectly but the problem is when I scroll text of the label changes automatically to different.
Following is the my code for cell for row at indexpath. Please let me know where I am going worng.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
int rowNo = [indexPath row];
NSLog(#"Row No:%d",rowNo);
Transfer *tempTransferRecord =(Transfer*)[self.transferInformation objectAtIndex:rowNo];
seasonYear.text=tempTransferRecord.seasonYear;
longName.text=tempTransferRecord.longName;
transactionDate.text=tempTransferRecord.transactionDate;
toTeam.text=tempTransferRecord.toTeam;
fromTeam.text=tempTransferRecord.fromTeam;
/*
static NSString *MyIdentifier = #"MyIdentifier2";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier] ;
if (cell == nil)
{
[[NSBundle mainBundle] loadNibNamed:#"PlayerTransfers" owner:self options:nil];
cell=transfersInfoCell;
self.transfersInfoCell=nil;
}
*/
static NSString *CellIdentifier = #"MyIdentifier2";
static NSString *CellNib = #"PlayerTransfers";
UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:CellNib owner:self options:nil];
cell = (UITableViewCell *)[nib objectAtIndex:0];
}
// perform additional custom work...
return cell;
}
Try moving your cell loading code to the top of cellForRowAtIndexPath, and the rowNo and value setting after that. Cells changing content must mean you're either changing what's in the data source between when you first set it and when you scroll, or you're setting values at the wrong point in time (i.e setting values on row 5 but then loading row 6 from a nib, or setting values on a row but then loading the nib for it afterwards so the values you set are overridden). Also, I'm a bit concerned that you set local variables rather than, say, (PlayerTransfers*)cell.seasonYear.text = tempTransferRecord.seasonYear or (UILabel *)[cell viewWithTag:1].text = tempTransferRecord.seasonYear. Shouldn't you be setting the values within each cell rather than on your table view class? That could explain why values are changing to something different: you may use the same variables to set every cell.
Have you set a CellIdentifier in Interface Builder?
how to make a UIView added to UITableViewCell content view fit within its bounds?
That is, I have created a single NIB file (with 3 labels on it), and want to use this for the display of each cell in a UITableView. I'm adding in the cellForRowAtIndexPath method the custom NIB based view to the cell's content view, however all I see as an end result is one (1) custom NIB based view (not multiple within a tableview as I expected).
How do I arrange so that each custom view fits neatly within each UITableViewCell? Also note the labels within the custom NIB view have word wrap.
Do I have to create a frame for the custom NIB view, but then in that case I'm not exactly sure how to set the co-ordinates. Would it be relative to the UITableViewCell? and if the custom view height can change due to it's UILabel word wrap, then I assume I separately have to manually calculate this height in the UITableView? (perhaps I should go to dynamic/custom view creation and drop the concept of using InterfaceBuilder/NIB)
- (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];
}
UIView *detailedView = [[[NSBundle mainBundle] loadNibNamed:#"DetailedAppointView" owner:self options:nil] objectAtIndex:0];
[cell.contentView addSubview:detailedView]; // DOESN'T SEE TO WORK
return cell;
}
This is how I do it if I need to implement a custom UITableViewCell.
I create a subclass of UITableViewCell for my custom cell ex. "MyCustomCell". Then I create a NIB file for it, and within this NIB file I insert UITableViewCell and change it's type to "MyCustomCell" and I give it an identifier with the same name as the class name. Then I insert all my subviews onto my cell. All in IB.
After I got my cell pimped out to my likning :-) I use it in the following way:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"MyCustomCell";
static NSString *CellNib = #"MyCustomCell";
MyCustomCell *cell = (MyCustomCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:CellNib owner:self options:nil];
cell = (MyCustomCell *)[nib objectAtIndex:0];
}
//Manipulate your custom cell here
return cell;
}