objective c ios checked more cell with one touch - ios

I want checked more cell with one click(touch).
In this code I try to do what I said bat ... I have some problem
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *riga;
int esci=0;
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
NSDictionary *itemAtIndex = (NSDictionary *)[listad objectAtIndex:indexPath.row];
riga=[itemAtIndex objectForKey:#"riga"];
for (int i=0; i<[righeS count]; i++) {
if ([righeS objectAtIndex:i] ==riga) {
cell.accessoryType=UITableViewCellAccessoryNone;
//[tableView deselectRowAtIndexPath:indexPath animated:YES];
[righeS removeObjectAtIndex:i];
esci=1;
}
}
if (esci==0) {
[righeS addObject:riga];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
//Check if value of qty of the next row is 0
bool trovato=FALSE;
for (int g =0 ;g <[listad count];g++){
NSDictionary *rigaScan=(NSDictionary*)[listad objectAtIndex:g];
if (trovato==TRUE) {
if ([[rigaScan objectForKey:#"qty"] isEqualToString: #"0"]){
NSString *rig;
rig=[rigaScan objectForKey:#"riga"];
[righeS addObject:rig];
cell.accessoryType=UITableViewCellAccessoryCheckmark;
}else{
break;
}
}
if ([rigaScan objectForKey:#"riga"]==riga){
trovato=TRUE;
}
[rigaScan release];
}
//Fine controllo
}
}
In this event I try when the user touches a cell to see if some value of the next cell is 0.
If the value is 0, I have to check also the next cell and the other value in the for iterate.
When the next value is !=0 I put break.
I believe that the logical code is correct but maybe not the syntax for cocoa.

Try this wonderful post from Cocoa With Love - Multiple row selection and editing in a UITableView

Related

why selection of a cell in one section affect to cells in other sections in iOS tableview, objective c [duplicate]

I have a table view with 5 sections and I have set the tableview selection to multiple. Each section have different number of rows. What I want is to set that the user can select only one cell from each section(in my table user can select any number of cells).
ex: 5 cells from 5 sections.
It should be impossible to select more than one cell from any section. If user select another cell from same section, previously selected cell should be deselected. How can I do this. This is a sample implementation of didSelectRowAtIndexPath.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
HoteldetalcelloneTableViewCell *cellone = (HoteldetalcelloneTableViewCell *)[self.detailtableView cellForRowAtIndexPath:indexPath];
HoteldetailcelltwoTableViewCell *celltwo = (HoteldetailcelltwoTableViewCell *)[self.detailtableView cellForRowAtIndexPath:indexPath];
//I have implement for two sections to test.
if(indexPath.section == 0)
{
HotelDetailsone *secone = [roomonearray objectAtIndex:indexPath.row];
HoteldetailsforBooking *book = [HoteldetailsforBooking new];
if([secone.offerallow isEqualToString:#"True"])
{
celltwo.selectedsignLabel.hidden = NO;
}
else
{
cellone.selectedsignLabelone.hidden = NO;
}
// [self.detailtableView reloadData];
NSLog(#"price for room 1 : %#", secone.itempriceText);
}
else
{
HotelDetailsone *sectwo = [roomtwoarray objectAtIndex:indexPath.row];
HoteldetailsforBooking *book = [HoteldetailsforBooking new];
if([sectwo.offerallow isEqualToString:#"True"])
{
celltwo.selectedsignLabel.hidden = NO;
}
else
{
cellone.selectedsignLabelone.hidden = NO;
}
// [self.detailtableView reloadData];
NSLog(#"price for room 1 : %#", sectwo.itempriceText);
}
}
You need to keep track on the selection of cell. So you need to store selected indexpath in array.
in ViewController.h declare property like this
#property(nonatomic,strong) NSMutableDictionary *selectionData;
Now in ViewController.m
- (void)viewDidLoad {
[super viewDidLoad];
self.selectionData=[[NSMutableDictionary alloc]init];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
TestTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"mycell"];
if ([self.selectionData objectForKey:[NSString stringWithFormat:#"%ld",(long)indexPath.section] ] != nil) {
NSMutableArray *sectionData=[[self.selectionData objectForKey:[NSString stringWithFormat:#"%ld",(long)indexPath.section]] mutableCopy];
if (![sectionData containsObject:[NSNumber numberWithLong:indexPath.row]])
{
cell.accessoryType = UITableViewCellAccessoryNone;
cell.numberlabel.text = #"2";
}
else
{
cell.numberlabel.text = #"***";
cell.accessoryType=UITableViewCellAccessoryCheckmark;
}
}
else
{
cell.numberlabel.text = #"2";
cell.accessoryType = UITableViewCellAccessoryNone;
}
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"selected section :%li ---> selected row :%li",(long)indexPath.section, (long)indexPath.row);
[self handleSelectionForSection:indexPath.section row:indexPath.row];
[self.tablev reloadData];
}
-(void)handleSelectionForSection:(long)sectionIndex row:(long)rowIndex
{
if ([self.selectionData objectForKey:[NSString stringWithFormat:#"%ld",sectionIndex] ] != nil) {
NSMutableArray *sectionData=[[self.selectionData objectForKey:[NSString stringWithFormat:#"%ld",sectionIndex]] mutableCopy];
if (![sectionData containsObject:[NSNumber numberWithLong:rowIndex]])
{
//removing previous selected rows
[sectionData removeAllObjects];
[sectionData addObject:[NSNumber numberWithLong:rowIndex]];
[self.selectionData setObject:sectionData forKey:[NSString stringWithFormat:#"%ld",sectionIndex]];
}
else
{
//cell you tapped is already selected,
// you can deselect it by removing object
//if you dont want to deselect it comment following lines
[sectionData removeObject:[NSNumber numberWithLong:rowIndex]];
[self.selectionData setObject:sectionData forKey:[NSString stringWithFormat:#"%ld",sectionIndex]];
}
}
else
{
//section key not available so we need to create it
NSMutableArray *sectionData=[[NSMutableArray alloc]init];
[sectionData addObject:[NSNumber numberWithLong:rowIndex]];
[self.selectionData setObject:sectionData forKey:[NSString stringWithFormat:#"%ld",sectionIndex]];
}
NSLog(#"All Selection : %#",self.selectionData);
}
Your numberOfRowsInSection, numberOfSectionsInTableView and titleForHeaderInSection will remain same.
Let me know if you have any query.
You can set selection property of tableview from interface builder. Select your tableview in IB and then select attribute inspector and setsingle selectiontoselection` property like below screenshot.
Or you can set programattically,
self.tableView.allowsMultipleSelection = NO;
Update :
If you want single selection per section then you can implement willSelectRowAtIndexPath as below,
- (NSIndexPath*)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath*)indexPath {
for ( NSIndexPath* selectedIndexPath in tableView.indexPathsForSelectedRows ) {
if ( selectedIndexPath.section == indexPath.section )
[tableView deselectRowAtIndexPath:selectedIndexPath animated:NO] ;
}
return indexPath ;
}
In this case you should allow multiple selection in tableview i think.
Reference : Answer of John Sauer
Looks like you are updating celltwo / cellone selectedsignLabel.hidden on table selection. so #Lion solution will not working. You have to save the last selected index using below code :
#property (nonatomic, strong) NSMutableDictionary *selectedIndexPathDict;
// in viewDidLoad:
self.tableView.allowsMultipleSelection = YES;
self.selectedIndexPathDict = [[NSMutableDictionary alloc] init];
//In table view delegate.
- (NSIndexPath*)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath*)indexPath {
NSString *indexSection = [NSString stringWithFormat:#"%ld", (long)indexPath.section];
NSIndexPath *indexPath1 = self.selectedIndexPathDict[indexSection];
if ( indexPath1) {
HotelDetailsone *secone = [roomonearray objectAtIndex:indexPath.row];
secone.offerallow ^= YES; //toggle bool value
// update new selected index path.
[self.selectedIndexPathDict setObject:indexPath forKey:indexSection];
//reload previous selected cell.
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(),^{
[tableView beginUpdates];
[tableView reloadRowsAtIndexPaths:#[indexPath1] withRowAnimation:UITableViewRowAnimationFade];
[tableView endUpdates];
});
} else {
//initialise selected index path
self.selectedIndexPathDict[indexSection] = indexPath;
}
[tableView deselectRowAtIndexPath:indexPath animated:NO] ;
return indexPath ;
}
I have not update the complete working code. But this is the way to achieve. You can also use the userdefault instead of self.selectedIndexPathDict.

Keep selected state of UITableViewCells when scrolling

I am trying to keep the selected state of multiple cells on a didSelectRowAtIndexPath method. I have an edit button that I've set up that loops through every cell to select each field on my UITableView.
Here is the code for the edit button on tap that selects all my rows.
- (IBAction)editButtonTapped:(id)sender {
for (int i = 0; i < self.caseDataTableView.numberOfSections; i++) {
for (NSInteger r = 0; r < [self.caseDataTableView numberOfRowsInSection:i]; r++) {
[self tableView:caseDataTableView didSelectRowAtIndexPath:[NSIndexPath indexPathForRow:r inSection:i]];
}
}
}
When calling the didSelectRowAtIndexPath method, it does the following code.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
OKOperatieNoteTableViewCell *cell = (OKOperatieNoteTableViewCell *)[self.caseDataTableView cellForRowAtIndexPath:indexPath];
cell.cellIndexPath = indexPath;
[cell hideLabelAndShowButtons];}
Incase you were wondering here is the hideLabelAndShowButtons method.
- (void)hideLabelAndShowButtons {
self.caseDataKeyLabel.hidden = NO;
if (!self.disabled) {
self.caseDataValueLabel.hidden = YES;
self.textField.hidden = NO;
if ([self.inputType isEqualToString:#"switcher"] || [self.inputType isEqualToString:#"multiselect"] || [self.inputType isEqualToString:#"picker"] || [self.inputType isEqualToString:#"DatePicker"] || [self.inputType isEqualToString:#"selectContact"]) {
self.button.hidden = NO;
}else {
self.button.hidden = YES;
}
}
self.caseDataDescriptionTextView.hidden = YES;}
Now at this point, I have all my rows selected. If I scroll down and then back up the selection of these rows is not there anymore. Now I'm aware when you go in and out of the view, the cellForRowAtIndexPath method recreates these cells. The following is my cellForRowAtIndexPath method.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = #"caseData";
OKOperatieNoteTableViewCell * cell = [[OKOperatieNoteTableViewCell alloc]init];
cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
if (indexPath.row < _procedureVariables.count) {
if ([[[_caseDataArray objectAtIndex:indexPath.row] valueForKey:#"key"] isEqualToString:#"Procedure"]) {
[cell setLabelsWithKey:[[_caseDataArray objectAtIndex:indexPath.row] valueForKey:#"key"] AndValue:[self.model valueForKey:#"var_procedureName"]];
}else {
[cell setLabelsWithKey:[[_caseDataArray objectAtIndex:indexPath.row] valueForKey:#"key"] AndValue:[[_caseDataArray objectAtIndex:indexPath.row] valueForKey:#"value"]];
}
OKProcedureTemplateVariablesModel *variableModel = _procedureVariables[indexPath.row];
cell.variable = variableModel.value;
[cell showLabelAndHideButtons];
cell.delegate = self;
[cell setUpCellType];
} else if (indexPath.row == _procedureVariables.count) {
NSString *text = [NSString stringWithFormat:#"%# \n\n %#", [_templateDictionary objectForKey:#"indicationText"], [_templateDictionary objectForKey:#"procedureText"] ];
[cell showDescription:text];
NSLog(#"cell.caseDataDescriptionTextView.font.fontName = %#", cell.caseDataDescriptionTextView.font.fontName);
}
cell.procedureID = _procedureID;
[tableView setContentInset:UIEdgeInsetsMake(1.0, 0.0, 0.0, 0.0)];
return cell;
}
I'm just trying to figure out how to keep the selected state of these cells once the cellForRowAtIndexPath method is called. Any suggestions are welcomed.
i tried to simulate your situation, created a customCell and saved the indexpaths of selectedRows in my custom selectedPaths mutable array(initialized in viewDidLoad).
After every click i removed or added related indexpath to my array.
it worked for my case. Hope it helps.
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"caseData";
NOTableViewCell *cell = (NOTableViewCell *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
{
NSLog(#"new cell created for row %d", (int)indexPath.row);
cell = [[[NSBundle mainBundle] loadNibNamed:#"NOTableViewCell" owner:self options:nil] objectAtIndex:0];
}
if ([selectedPaths indexOfObject:indexPath] != NSNotFound) // this cell is in selected state.
{
[cell.textLabel setText:#"This cell selected"];//selected state job.
return cell;
}
[cell.textLabel setText:[NSString stringWithFormat:#"%d", (int)indexPath.row]];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if ([selectedPaths indexOfObject:indexPath] != NSNotFound) {
[selectedPaths removeObject:indexPath];
}
else{
[selectedPaths addObject:indexPath];
}
//[tableView reloadData];
[tableView reloadRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationNone];//instead of reloading all just reload clicked cell.
}
You need to update the cell to selected and not selected explicitly in both directions in cellForRowAtIndexPath.
If not, the recycled cells will just show the value of the cell the cell was last used for until you change it.
While you are invoking the delegate method in order to call hideLabelAndShowButtons, you aren't telling the table view that you have selected the row;
- (IBAction)editButtonTapped:(id)sender {
for (int i = 0; i < self.caseDataTableView.numberOfSections; i++) {
for (NSInteger r = 0; r < [self.caseDataTableView numberOfRowsInSection:i]; r++) {
NSIndexPath *path=[NSIndexPath indexPathForRow:r inSection:i];
[caseDataTableView selectRowAtIndexPath:path animated:NO scrollPosition:UITableViewScrollPositionNone];
[self tableView:caseDataTableView didSelectRowAtIndexPath:path];
}
}
}
Also, you aren't using the cell selection state in cellForRowAtIndexPath, so you probably need to change some code there too, but I am not sure what the relationship is between selected state and how you want to render the cell.

UITableView Crash on scroll , add or delete cell

I've just changed my population method to use a plist and it's caused a crash upon attempting to add or delete a cell. Scrolling the table also causes a crash. I am not using IB and this is all created programmatically. Searching questions results in no answers or IB related solutions. What I have for code is
//****************** Set Table Data
NSString *filePath = [[NSBundle mainBundle] pathForResource:#"stuff" ofType:#"plist"];
NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithContentsOfFile:filePath];
devices = [NSMutableArray arrayWithArray:[dict objectForKey:#"Devices"]];
//****************** Customize Number of Rows in Table
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
int count = [devices count];
if(self.editing) count++;
return count;
}
//****************** Customize the Cells
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:[NSString stringWithFormat:#"Cell %i",indexPath.section]];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:[NSString stringWithFormat:#"Cell %i",indexPath.section]] autorelease];
}
switch(indexPath.section){
case 0:{ cell.textLabel.text = [devices objectAtIndex: indexPath.row];} break;
default: break;
}
return cell;
}
This is what I have deemed relevant code since everything was fine until I populated from a plist.
More code has been requested
//***************** Allow Editing of Cells
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
[devices removeObjectAtIndex:indexPath.row];
[myTable reloadData];
}
//****************** Add New Cell If ok button is pressed
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
UITextField * newDevice = [alertView textFieldAtIndex:0];
NSLog(#"newDevice - %#",newDevice.text);
if (alertView.tag == 1 && buttonIndex == 1){
[devices addObject: newDevice.text];
[myTable reloadData];
UPDATE
Commenting out my data loading solves the crash leading me to believe I've incorrectly invoked the way to load data. Of course I'll look into this and appreciate a bigger brain throwing in his two cents in the mean time.
Change switch to
switch(indexPath.section){
case 0:{
if ([devices count] > indexPath.row) {
cell.textLabel.text = [devices objectAtIndex: indexPath.row];
}
} break;
default: break;
}
Fixed. It seems my array was being auto released instantly and a manual retain then release fixed my problem

How do you select uitableview rows programmatically

I am trying to achive a email like select all functionality in uitableview where on same button tap user can checkmark or remove all checkmark and additionally user can also select/deselect rows(on didSelectRowAtIndexPath). I tried to do but its not working properly, here is my code.
- (IBAction)selectAll:(id)sender
{
if(myBoolean)
{
for (NSInteger s = 0; s < self.iTable.numberOfSections; s++)
{
for (NSInteger r = 0; r < [self.iTable numberOfRowsInSection:s]; r++)
{
[[self.iTable cellForRowAtIndexPath:[NSIndexPath indexPathForRow:r inSection:s]] setAccessoryType:UITableViewCellAccessoryNone];
}
}
myBoolean = NO;
[_selectUnselectButton setTitle:#"Select all Friends" forState:UIControlStateNormal];
}
else
{
for (NSInteger s = 0; s < self.iTable.numberOfSections; s++)
{
for (NSInteger r = 0; r < [self.iTable numberOfRowsInSection:s]; r++)
{
[[self.iTable cellForRowAtIndexPath:[NSIndexPath indexPathForRow:r inSection:s]] setAccessoryType:UITableViewCellAccessoryCheckmark];
NSLog(#"%d-%d",s,r);
}
}
myBoolean = YES;
[_selectUnselectButton setTitle:#"Unselect all Friends" forState:UIControlStateNormal];
}
}
-(void)tableView:(UITableView *)tableView_ didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView_ cellForRowAtIndexPath:indexPath];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
if (cell.accessoryType == UITableViewCellAccessoryCheckmark)
{
cell.accessoryType = UITableViewCellAccessoryNone;
}
else
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
I wrote a sample code that I adapted to your needs.
Basically it is
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *unifiedID = #"aCellID";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:unifiedID];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:unifiedID];
}
cell.textLabel.text = [self.states objectAtIndex:indexPath.row];
//if the indexPath was found among the selected ones, set the checkmark on the cell
cell.accessoryType = ([self isRowSelectedOnTableView:tableView atIndexPath:indexPath]) ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *state = [self.states objectAtIndex:indexPath.row];
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if([self isRowSelectedOnTableView:tableView atIndexPath:indexPath]){
[self.selectedCells removeObject:indexPath];
[self.selecedStates removeObject:state];
cell.accessoryType = UITableViewCellAccessoryNone;
} else {
[self.selectedCells addObject:indexPath];
[self.selecedStates addObject:state];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
NSLog(#"%#", self.selecedStates);
}
-(BOOL)isRowSelectedOnTableView:(UITableView *)tableView atIndexPath:(NSIndexPath *)indexPath
{
return ([self.selectedCells containsObject:indexPath]) ? YES : NO;
}
- (IBAction)selectAll:(id)sender {
[self.selecedStates removeAllObjects];
[self.selectedCells removeAllObjects];
NSUInteger numberOfSections = [self.tableView numberOfSections];
for (NSUInteger s = 0; s < numberOfSections; ++s) {
NSUInteger numberOfRowsInSection = [self.tableView numberOfRowsInSection:s];
for (NSUInteger r = 0; r < numberOfRowsInSection; ++r) {
NSIndexPath *idxPath = [NSIndexPath indexPathForRow:r inSection:s];
[self.selectedCells addObject:idxPath];
[self.selecedStates addObject:self.states[idxPath.row]];
}
}
[self.tableView reloadData];
}
- (IBAction)deselectAll:(id)sender {
[self.selecedStates removeAllObjects];
[self.selectedCells removeAllObjects];
[self.tableView reloadData];
}
- (IBAction)toggleAll:(id)sender {
if ([self.states count] == [self.selecedStates count]) {
[sender setTitle:#"select all"];
[self deselectAll:sender];
} else {
[sender setTitle:#"deselect all"];
[self selectAll:sender];
}
}
in action:
You are calling
[[self.iTable cellForRowAtIndexPath:[NSIndexPath indexPathForRow:r inSection:s]] setAccessoryType:UITableViewCellAccessoryNone];
for every row in every section within the tableView. if you have many row, this is ver inefficient, as it will deal with rows not on the screen. But this is not needed. just put every selected index path into an array and tell the tableView to reload. This will reload the visible cells and due to the implementation of -tableView:cellForRowAtIndexPath: cells wfor new rows will be correctly re-conigured.
Setting the accessory view needs to happen inside the tableView:cellForRowAtIndexPath: method. When you want to change the accessories from outside, the outside method needs to change the model first to indicate that check marks must be placed in certain cells, and then call reloadData on the UITableView.
One way to store what cells are checked is an array of NSIndexSet objects - one index set per section. In the example below I show code for a single section, but you should get an idea of how to make multiple sections work.
// This variable needs to be declared in a place where your data source can get it
NSMutableIndexSet *selected;
// You need to initialize it in the designated initializer, like this:
selected = [[NSMutableIndexSet alloc] init];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
if ([selected containsIndex:indexPath.row]) {
[cell setAccessoryType:UITableViewCellAccessoryCheckmark];
} else {
[cell setAccessoryType:UITableViewCellAccessoryNone];
}
// Do the rest of your code
return cell;
}
Now in the code where you want to set rows selected or unselected you just need to call [selected addIndex:rowToSelect] or [selected removeIndex:rowToUnselect], and call your table's reloadData.
Use selectRowAtIndexPath:animated:scrollPosition: to select a row
and deselectRowAtIndexPath:animated: to deselect a row.
For more read the UITableView docs
Try this code instead of your old one
- (IBAction)selectAll:(id)sender
{
if(myBoolean)
{
for (NSInteger s = 0; s < self.iTable.numberOfSections; s++)
{
for (NSInteger r = 0; r < [self.iTable numberOfRowsInSection:s]; r++)
{
[self.iTable selectRowAtIndexPath:[NSIndexPath indexPathForRow:r inSection:s]] animated:YES scrollPosition:UITableViewScrollPositionNone];
}
}
myBoolean = NO;
[_selectUnselectButton setTitle:#"Select all Friends" forState:UIControlStateNormal];
}
else
{
for (NSInteger s = 0; s < self.iTable.numberOfSections; s++)
{
for (NSInteger r = 0; r < [self.iTable numberOfRowsInSection:s]; r++)
{
[self.iTable selectRowAtIndexPath:[NSIndexPath indexPathForRow:r inSection:s]] animated:YES scrollPosition:UITableViewScrollPositionNone];
NSLog(#"%d-%d",s,r);
}
}
myBoolean = YES;
[_selectUnselectButton setTitle:#"Unselect all Friends" forState:UIControlStateNormal];
}
}
-(void)tableView:(UITableView *)tableView_ didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView_ cellForRowAtIndexPath:indexPath];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
if (cell.accessoryType == UITableViewCellAccessoryCheckmark)
{
cell.accessoryType = UITableViewCellAccessoryNone;
}
else
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
You can follow these steps to implement this,
1) You should have a mutable array to store indexpaths
2) What you can do is, when you tap Check All or Uncheck All, do add or remove all indexpaths to/from array (which you've), reload table for update changes
3) In - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath datasource method, check into array using if([array containsObject:indexPath]), if exist mark it checked or unchecked
4) In - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath delegate method, you should check for already existence of indexpath tapped into array, as you've did in 3rd step, and add or remove indexpaths as per the condition, reload table for update changes
Take another NSMutableArray as SelectedArray
in didSelectRowAtIndexPath row You can Add remove objects from SelectedArray.
You can select a UITableViewCell calling UITableViews selectRowAtIndexPath method:
[yourtable selectRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]
animated:NO
scrollPosition:UITableViewScrollPositionTop];
Put for loop for selectedArray to putcheckmark only in selected cells or All cells.
check my accepted answer here : Need to create a select all button for UITableView and add selections to an array in iOS
Xcode 8x
Swift 3x
Select Row
let indexPath = IndexPath(row: 0, section: 0)
mytableView.selectRow(at: indexPath, animated: true, scrollPosition: .bottom)
myTableView.delegate?.tableView!(myTableView, didSelectRowAt: indexPath)
DeSelect Row
let deselectIndexPath = IndexPath(row: 7, section: 0)
myTableView.deselectRow(at: deselectIndexPath, animated: true)
myTableView.delegate?.tableView!(tblView, didDeselectRowAt: indexPath)
you can do something like this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self doSomethingWithRowAtIndexPath:indexPath];
}

UITableViewCell check/uncheck within one section only

I'm trying to setup my table so that the user can select one item per section.
For example:
- Section 0
- Row 0 √
- Row 1
- Section 1
- Row 0
- Row 1 √
- Row 2
So in the above example if the user selects section 0, row 1 then row 0 in the same section should be unchecked and the selected row gets a checkmark.
Same goes for section 1 where any selected row should get a checkmark and then I want to remove the checkmark from the previously selected row in the same section.
- Section 0
- Row 0
- Row 1 √
- Section 1
- Row 0
- Row 1
- Row 2 √
Please keep in mind that I won't have a predefined number of sections or rows, so the code should work for this scenario. Here's what I currently have, hopefully that might get me started on the right path.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
MyObject *myObject = [self.fetchedResultsController objectAtIndexPath:indexPath];
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
if ([myObject.optionSelected boolValue] == NO) {
[myObject setOptionSelected:[NSNumber numberWithBool:YES]];
[cell setAccessoryType:UITableViewCellAccessoryCheckmark];
} else {
[myObject setOptionSelected:[NSNumber numberWithBool:NO]];
[cell setAccessoryType:UITableViewCellAccessoryNone];
}
if ([tableView numberOfRowsInSection:indexPath.section] > 1) {
NSMutableArray *cells = [[NSMutableArray alloc] init];
for (NSInteger i = 0; i < [tableView numberOfRowsInSection:indexPath.section]; ++i) {
[cells addObject:[tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:indexPath.section]]];
}
for (UITableViewCell *deselectCell in cells) {
if ([self.tableView indexPathForCell:deselectCell] != indexPath && deselectCell != cell) {
MyObject *tempObject = [self.fetchedResultsController objectAtIndexPath:[self.tableView indexPathForCell:deselectCell]];
[tempObject setOptionSelected:[NSNumber numberWithBool:NO]];
[cell setAccessoryType:UITableViewCellAccessoryNone];
}
}
}
}
As you can see I am also setting the object's selected state, I'd like this to remain intact :)
Thanks for any feedback and help in advance!
Your tableview should declare a mutable array to hold the currently selected paths:
NSMutableArray *selectedCellPaths = [[NSMutableArray alloc] init];
Then your tableView:didSelectRowAtIndexPath: should look like this
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
MyObject *myObject = [self.fetchedResultsController objectAtIndexPath:indexPath];
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
if ([myObject.optionSelected boolValue] == NO) {
[myObject setOptionSelected:[NSNumber numberWithBool:YES]];
[cell setAccessoryType:UITableViewCellAccessoryCheckmark];
[selectedCellPaths addObject:indexPath];
} else {
[myObject setOptionSelected:[NSNumber numberWithBool:NO]];
[cell setAccessoryType:UITableViewCellAccessoryNone];
if ([selectedCellPaths containsObject:indexPath]) {
[selectedCellPaths removeObject:indexPath];
}
}
// Now we're going to remove all but the cell path that is actually selected.
NSMutableArray *cellsToRemove = [[NSMutableArray alloc] init];
for (NSIndexPath *selectedCellIndexPath in selectedCellPaths) {
if ([selectedCellIndexPath compare:indexPath] != NSOrderedSame && selectedCellIndexPath.section == indexPath.section) {
// deselect cell at selectedCellPath
[cellsToRemove addObject:selectedCellIndexPath];
}
}
[selectedCellPaths removeObjectsInArray:cellsToRemove];
}
Note I have just put in a comment where you would want to deselect the actual cell at the cell path that is not selected. You need to fill that code in yourself.
I haven't tested this code, just modified what you had in TextMate but it should work barring minor changes.

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