How to show selected checked TableViewCell in IOS(Objective c) - ios

Question

Hi friends I am new in IOS. I am creating a table view of state list. On button click I'm showing a TableView on popup. Code for creating state list is
CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat screenWidth = screenRect.size.width;
CGFloat screenHeight = screenRect.size.height;
selectedState = [NSMutableArray new];
UIView *contentView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, screenWidth-50, screenHeight-50)];
mytableview = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, screenWidth-50, screenHeight-100)];
mytableview.delegate =self;
mytableview.dataSource=self;
[contentView addSubview:mytableview];
UIButton *save = [[UIButton alloc] initWithFrame:CGRectMake(0, screenHeight-100, screenWidth-50, 50)];
[save setTitle:#"SAVE" forState:UIControlStateNormal];
save.titleLabel.font = [UIFont systemFontOfSize:14];
[save setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[save addTarget:self action:#selector(saveActionForState:) forControlEvents:UIControlEventTouchUpInside];
[save setBackgroundColor:[UIColor colorWithRed:41.0/255.0 green:178.0/255.0 blue:165.0/255.0 alpha:1.0]];
[contentView addSubview:save];
[[KGModal sharedInstance] showWithContentView:contentView andAnimated:YES];
For table creation code is
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [stateList count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CRTableViewCellIdentifier = #"cellIdentifier";
if(selectStateButton ==1){
CRTableViewCell *cell = (CRTableViewCell *)[tableView dequeueReusableCellWithIdentifier:CRTableViewCellIdentifier];
if (cell == nil) {
cell = [[CRTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CRTableViewCellIdentifier];
}
NSString *text = [stateList objectAtIndex:[indexPath row]];
cell.textLabel.font = [UIFont systemFontOfSize:12.0];
cell.isSelected = [selectedState containsObject:text] ? YES : NO;
cell.textLabel.text = text;
return cell;
}
}
On selection of table cell checked the cell of IOS.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(selectStateButton ==1){
//[selectedStatesForSelect2 removeAllObjects];
NSString *text = [stateList objectAtIndex:[indexPath row]];
NSInteger indexings = [indexPath row]+1;
if ([selectedState containsObject:text]){
[selectedState removeObject:text];
[selectedStatesId removeObject:[NSString stringWithFormat:#"%ld", (long)indexings]];
}else{
//NSLog(#"count%lu indexing %#",(unsigned long)[selectedState count],selectedStatesId);
[selectedState addObject:text];
[selectedStatesId addObject:[NSString stringWithFormat:#"%ld", (long)indexings]];
[selectedStatesForSelect2 addObject:[NSString stringWithFormat:#"%ld", (long)indexings]];
NSLog(#"select%#count%lu",selectedStatesForSelect2,(unsigned long)[selectedState count]);
if([selectedState count] > 3){
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Hold On..." message:#"You can't select more than three states." delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alert show];
[selectedState removeObject:text];
[selectedStatesId removeObject:[NSString stringWithFormat:#"%ld", (long)indexings]];
}
}
}
That seen like this. When user select first time it works very good. But after closing the table view, when user again open the state list I want to show the previous selected item. Thats not working properly. I'm using a library for check "CRMultiRowSelector".Please help me.

Answer 1

I will give what you ask.I tried many times this.It works perfectly
ViewController.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>
#property (strong, nonatomic) IBOutlet UITableView *tableViewCheckMarkPreviousSelectionUpdate;
#end
ViewController.m
#import "ViewController.h"
#interface ViewController ()
{
NSMutableArray *arrProductSelection,*arrProductSelectDeSelectCheckMark;
NSArray *arrayFetchFromDefaults;
}
#end
#implementation ViewController
#synthesize tableViewCheckMarkPreviousSelectionUpdate;
- (void)viewDidLoad
{
[super viewDidLoad];
arrProductSelection = [[NSMutableArray alloc]initWithObjects:#"iPhone",#"iPad",#"iPod",#"iTV",#"iWatch",#"iMac",nil];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)viewWillAppear:(BOOL)animated
{
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
arrayFetchFromDefaults = [userDefaults objectForKey:#"selectedcheckmark"];
arrProductSelectDeSelectCheckMark = [[NSMutableArray alloc]initWithArray:arrayFetchFromDefaults];
if(arrProductSelectDeSelectCheckMark.count == 0)
{
arrProductSelectDeSelectCheckMark = [[NSMutableArray alloc]init];
for(int j=0;j<[arrProductSelection count];j++)
{
[arrProductSelectDeSelectCheckMark addObject:#"deselected"];
}
}
[tableViewCheckMarkPreviousSelectionUpdate reloadData];
}
#pragma mark - UITableViewDataSource Methods
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return arrProductSelection.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *strCell = #"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:strCell];
if(cell==nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:strCell];
}
if([[arrProductSelectDeSelectCheckMark objectAtIndex:indexPath.row] isEqualToString:#"deselected"])
cell.accessoryType = UITableViewCellAccessoryNone;
else
cell.accessoryType = UITableViewCellAccessoryCheckmark;
cell.textLabel.text = [arrProductSelection objectAtIndex:indexPath.row];
return cell;
}
#pragma mark - UITableViewDelegate Methods
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
#try
{
CGPoint touchPoint = [cell convertPoint:CGPointZero toView:tableViewCheckMarkSelectionUpdate];
NSIndexPath *indexPath = [tableViewCheckMarkSelectionUpdate indexPathForRowAtPoint:touchPoint];
NSLog(#"%#",arrProductSelectDeSelectCheckMark);
if([arrProductSelectDeSelectCheckMark count]==0)
{
for(int i=0; i<[arrProductSelection count]; i++)
{
[arrProductSelectDeSelectCheckMark addObject:#"deselected"];
}
}
if([[arrProductSelectDeSelectCheckMark objectAtIndex:indexPath.row] isEqualToString:#"deselected"])
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
[arrProductSelectDeSelectCheckMark replaceObjectAtIndex:indexPath.row withObject:#"selected"];
}
else
{
cell.accessoryType = UITableViewCellAccessoryNone;
[arrProductSelectDeSelectCheckMark replaceObjectAtIndex:indexPath.row withObject:#"deselected"];
}
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:arrProductSelectDeSelectCheckMark forKey:#"selectedcheckmark"];
[defaults synchronize];
}
#catch (NSException *exception) {
NSLog(#"The exception is-%#",exception);
}
}
#end

Answer 2

You have to save indexPaths and while creating the cell you have to again reassign state of cell. If it is selected or not.
In
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{}
in this method keep selected indexPaths and check for same indexPaths in cellPathForRowIndexPath, if there there show as checked otherwise unchecked.