I have a UITableView which has master records in it's cell. When the user selects a cell, some detail record is displayed on the same table and this record would be set below that particular cell.
One more thing is the cells that are below the selected cell of the master table will be displayed below the detail view.
In short I want to design a popup that will display the details of selected cell below that particular cell and rest of the cells(cells below the selected cell) of master will be moved down, so that the detail popup can be accomodated between the selected cell and the cells below it.
//Take int selectedCellIndex in your .h file, initialize selectedIndex with -1
//Take BOOL isSelected in your .h file
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
selectedCellIndex = indexPath.row;
isSelected = YES;
[yourTable reloadData];
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row==selectedCellIndex)
{
return 100;
}
return 50; //Your default cell size
}
- (UITableViewCell *)tableView:(UITableView *)tV cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//after creating your cell
if(isSelected && selectedIndex>-1)
{
//Show your custom View , something like [cell.contentView addSubView:customView];
isSelected = NO; //Reset
selectedIndex = -1; //Reset
}
}
You can simply use this
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath method . In here, You can allocate a new UIView every time the user clicks on the cell and display your information in it.
If you have any queries please feel free to reply . :)
Check these projects out, maybe they will of some help ...
Combo Box
Related
I want to remove downloaded image in invisible tableview cell when I scrolled tableview.
So I set a tag
- (void)appImageDidLoad:(NSIndexPath *)indexPath
{
int row=(int)indexPath
UITableViewCell *cell;
cell=[self.gamesTableView cellForRowAtIndexPath:indexPath];
OneItemCell *cell1=(OneItemCell*) cell; //custom cell
cell1.imageview.tag= row+100;
}
I set remove downloaded image when selected row is last row cell(=add cell).
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(row==nArrayCount)
{
if(row>19)
{
for(int i=1;i<row-8;i++)
{
[[self.gamesTableView viewWithTag:i+100] removeFromSuperview];
}
}
}
but it is not working . because [[self.gamesTableView viewWithTag:i+100] is NULL.
another way I set a key to cell's imageView by NSMutableDictionary(=imageRemoveInProgress)
- (void)appImageDidLoad:(NSIndexPath *)indexPath
{ .
.
[imageRemoveInProgress setObject:cell1.imageView forKey:[NSNumber numberWithInt:row+100]];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{ .
.
[[imageRemoveInProgress objectForKey:[NSNumber numberWithInt:row+100]] removeFromSuperview];
}
it is not working too . because[[imageRemoveInProgress objectForKey:[NSNumber numberWithInt:row+100]] is NULL too.
[[imageRemoveInProgress objectForKey:[NSNumber numberWithInt:row+100]] has value in appImageDidLoad.
but In - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
it has NULL.
why do taged and seted key value cell's imageView become NULL?
how to remove tableViewcell's imageview?
I don't know the exact way, But I can provide a hint to do it
you can use something like this
NSArray *visiblePaths = [self.tableView indexPathsForVisibleRows];
visiblePaths is an array of indexPaths of cells that are currently visible, you can check whether the cell for which you want to remove the image lies in this array or not.
I would like to make a UITableViewCell with one label and two accessory types:
Unselected cells should display a UITableViewCellAccessoryDetailDisclosureButton accessory.
The selected cell should display both the UITableViewCellAccessoryDisclosureIndicator and the UITableViewCellAccessoryDetailDisclosureButton accessories.
The only way I know how to do this is by using an image for the selected cell's accessory view. Is there an alternative way to do this?
Make a custom UITableViewCell (numerous tutorials and examples online and also in the documentation).
In your
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
selectedIndex = indexPath //selectedIndex is a property
}
Then in
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
//usual cell stuff
if(indexPath == selectedIndex)
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
else
[cell setAccessoryType:UITableViewCellAccessoryDetailDisclosureButton];
}
So the trick is just to keep a reference to the selected cell and set the indicator accordingly.
Note that you might want to test if the cell is already selected before setting the selectedIndex, in that case you should set selectedIndex = nil.
In my app I need to delete multiple rows in a table, edit the table and get a check box beside the table. When checked then the table cells are deleted. It is like the iPhone message app. How can I do this, please help me.
If I understand your question correctly, you essentially want to mark UITableViewCells in some way (a checkmark); then, when the user taps a master "Delete" button, all marked UITableViewCells are deleted from the UITableView along with their corresponding data source objects.
To implement the checkmark portion, you might consider toggling between UITableViewCellAccessoryCheckmark and UITableViewCellAccessoryNone for the UITableViewCell's accessory property. Handle touches in the following UITableViewController delegate method:
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *c = [tableView cellForRowAtIndexPath:indexPath];
if (c.accessoryType == UITableViewCellAccessoryCheckmark) {
[c setAccessoryType:UITableViewCellAccessoryNone];
}
//else do the opposite
}
You might also look at this post regarding custom UITableViewCells if you're wanting a more complex checkmark.
You can set up a master "Delete" button two ways:
The IB approach
The programmatic approach
In either case, eventually a method must be called when the master "Delete" button is pressed. That method just needs to loop through the UITableViewCells in the UITableView and determined which ones are marked. If marked, delete them. Assuming just one section:
NSMutableArray *cellIndicesToBeDeleted = [[NSMutableArray alloc] init];
for (int i = 0; i < [tableView numberOfRowsInSection:0]; i++) {
NSIndexPath *p = [NSIndexPath indexPathWithIndex:i];
if ([[tableView cellForRowAtIndexPath:p] accessoryType] ==
UITableViewCellAccessoryCheckmark) {
[cellIndicesToBeDeleted addObject:p];
/*
perform deletion on data source
object here with i as the index
for whatever array-like structure
you're using to house the data
objects behind your UITableViewCells
*/
}
}
[tableView deleteRowsAtIndexPaths:cellIndicesToBeDeleted
withRowAnimation:UITableViewRowAnimationLeft];
[cellIndicesToBeDeleted release];
Assuming by "edit" you mean "delete a single UITableViewCell" or "move a single UITableViewCell," you can implement the following methods in the UITableViewController:
- (void)viewDidLoad {
[super viewDidLoad];
// This line gives you the Edit button that automatically comes with a UITableView
// You'll need to make sure you are showing the UINavigationBar for this button to appear
// Of course, you could use other buttons/#selectors to handle this too
self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
// Return NO if you do not want the specified item to be editable.
return YES;
}
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
//perform similar delete action as above but for one cell
}
}
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
//handle movement of UITableViewCells here
//UITableView cells don't just swap places; one moves directly to an index, others shift by 1 position.
}
You can put 1 UIButton lets call it "EDIT" and wire up it to IBAction. In IBAction write so you will be able to do as per your requirement.
-(IBAction)editTableForDeletingRow
{
[yourUITableViewNmae setEditing:editing animated:YES];
}
This will add round red buttons on the left hand corner and you can click on that Delete button will appear click on that and row will be deleted.
You can implement delegate method of UITableView as following.
-(UITableViewCellEditingStyle)tableView: (UITableView *)tableView editingStyleForRowAtIndexPath: (NSIndexPath *)indexPath
{
//Do needed stuff here. Like removing values from stored NSMutableArray or UITableView datasource
}
Hope it helps.
you want to be looking for deleteRowsAtIndexPath, with all your code squeezed between [yourTable beginUpdates] & [yourTable endUpdates];
I have a UITableviewCell. When a user clicks the cell, Im saving the indexpath and then calling the cellforrowAtIndexpath method to get the cell and then call the SetHighlighted:TRUE on that cell.
This works fine but the problem is when I scroll up and down the tableview, the selected cell when reappears, is not highlighted. How do I make the highlighted blue color persist so the user can visually see their selection even after scrolling the table up or down?
Thanks
save the indexpath of the selected cell
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
self.selectedIndexPath = indexPath;
}
and compare in tableVIew:cellForRowAtIndexPath:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
// configure cell
if ([indexPath isEqual:self.selectedIndexPath]) {
[cell setHighlighted:YES];
}
else {
[cell setHighlighted:NO];
}
return cell;
}
However, keep in mind that apple discourages the use of the cell highlight state to indicate selected cell. You should probably use cell.accessoryType = UITableViewCellAccessoryCheckmark;
I want to add an arrow to the right of each row in TableView on iPhone. Any ideas how to do this?
You mean the default arrow (a chevron) that lots of apps have?
UITableViewCell *myCell = ...; //GET a cell from somewhere.
myCell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
I just worked it out:
-(UITableViewCellAccessoryType)tableView:(UITableView *)tableView
accessoryTypeForRowWithIndexPath:(NSIndexPath *)indexPath
{
return UITableViewCellAccessoryDetailDisclosureButton;
}
-(void)tableView:(UITableView *)tableView
accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
//add action here
}
A blue arrow will show up to the right of each row.