Change background cell in tableView permanently after selected - ios

Question

How can I change the background cell permanently after being selected? What I know is by using cell.selectedBackgroundView it will only change the cell background for a while and then it goes back to normal.
I want it to change permanently when selected even after app are closed. I tried to search for a solution but could not find relevant answer.
this is my cellForRowAtIndexPath method:
- (UITableViewCell *)tableView:(UITableView *)tableView2 cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView2 dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]autorelease];
//set up selected cell background
cell.backgroundView = [ [[UIImageView alloc] initWithImage:[ [UIImage imageNamed:#"white_selected.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ]autorelease];
cell.selectedBackgroundView = [ [[UIImageView alloc] initWithImage:[ [UIImage imageNamed:#"blue_selected.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ]autorelease];
}
//set up cell
CGFloat nRed= 0/255.0;
CGFloat nGreen=73.0/255.0;
CGFloat nBlue=144.0/255.0;
UIColor *myColor=[[UIColor alloc]initWithRed:nRed green:nGreen blue:nBlue alpha:1];
//set up cell text
cell.textLabel.text = [[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"title"];
cell.textLabel.highlightedTextColor = [UIColor colorWithRed:51.0f/255.0f green:102.0f/255.0f blue:153.0f/255.0f alpha:1.0f];
cell.textLabel.font=[UIFont fontWithName:#"HelveticaNeue-Bold" size:15];
cell.textLabel.textColor=myColor;
cell.backgroundColor = [UIColor colorWithRed: 0.0 green: 0.0 blue: 0.2 alpha: 1.0];
//set icon image for cell
cell.imageView.image = [UIImage imageNamed:
[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"icon"]];
return cell;
}
below are my didSelectRowAtIndexPath method;
- (void)tableView:(UITableView *)tableView2 didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
indexPath];
[self->tableView deselectRowAtIndexPath:indexPath animated:YES];
if ([[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"action"] isEqualToString:#"a1"]){
NSString *title_a1 =[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"title"];
NSString *content_a1 = [[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"content"];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
// saving an NSString
[defaults setObject:title_a1 forKey:#"title_a1"];
[defaults setObject:content_a1 forKey:#"content_a1"];
WebBrowserViewController *webview=[[WebBrowserViewController alloc]initWithNibName:#"WebBrowserViewController" bundle:nil];
[self presentModalViewController:webview animated:YES];
}else if ([[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"action"] isEqualToString:#"a2"]){
NSString *title_a2 =[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"title"];
NSString *content_a2 = [[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"content"];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
// saving an NSString
[defaults setObject:title_a2 forKey:#"title_a2"];
[defaults setObject:content_a2 forKey:#"content_a2"];
WebBrowserViewController *webview=[[WebBrowserViewController alloc]initWithNibName:#"WebBrowserViewController" bundle:nil];
[self presentModalViewController:webview animated:YES];
}else {
NSLog(#" other action key get! ");
}
}

Answer 1

You can add one property to your datasource array, for example, named BOOL isSelected.
in - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath you update isSelected = YES. and add the following
[tableView beginUpdates];
[tableView reloadRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationNone];
[tableView endUpdates];
to update the selected cell. and in your - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath method
if(data.isSelected){
cell.backgroundView = [[UIImageView alloc] initWithImage:[ [UIImage imageNamed:#"blue_selected.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ];
}
the code is here:
You need add one bool property to the object in your array. For example,you add
#property (nonatomic) BOOL isSelected; to your object class's header file.
- (UITableViewCell *)tableView:(UITableView *)tableView2 cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView2 dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]autorelease];
//set up selected cell background
//cell.backgroundView = [ [[UIImageView alloc] initWithImage:[ [UIImage imageNamed:#"white_selected.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ]autorelease];
//cell.selectedBackgroundView = [ [[UIImageView alloc] initWithImage:[ [UIImage imageNamed:#"blue_selected.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ]autorelease];
}
if (((YourObjectType *)[AryStoreknowItem objectAtIndex:indexPath.row]).isSelected){
cell.backgroundView = [ [[UIImageView alloc] initWithImage:[ [UIImage imageNamed:#"blue_selected.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ]autorelease];
} else {
cell.backgroundView = [ [[UIImageView alloc] initWithImage:[ [UIImage imageNamed:#"white_selected.png"] stretchableImageWithLeftCapWidth:0.0 topCapHeight:5.0] ]autorelease];
}
//set up cell
CGFloat nRed= 0/255.0;
CGFloat nGreen=73.0/255.0;
CGFloat nBlue=144.0/255.0;
UIColor *myColor=[[UIColor alloc]initWithRed:nRed green:nGreen blue:nBlue alpha:1];
//set up cell text
cell.textLabel.text = [[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"title"];
cell.textLabel.highlightedTextColor = [UIColor colorWithRed:51.0f/255.0f green:102.0f/255.0f blue:153.0f/255.0f alpha:1.0f];
cell.textLabel.font=[UIFont fontWithName:#"HelveticaNeue-Bold" size:15];
cell.textLabel.textColor=myColor;
cell.backgroundColor = [UIColor colorWithRed: 0.0 green: 0.0 blue: 0.2 alpha: 1.0];
//set icon image for cell
cell.imageView.image = [UIImage imageNamed:
[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"icon"]];
return cell;
}
- (void)tableView:(UITableView *)tableView2 didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
indexPath];
[self->tableView deselectRowAtIndexPath:indexPath animated:YES];
((YourObjectType *)[AryStoreknowItem objectAtIndex:indexPath.row]).isSelected = YES;
[tableView beginUpdates];
[tableView reloadRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationNone];
[tableView endUpdates];
if ([[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"action"] isEqualToString:#"a1"]){
NSString *title_a1 =[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"title"];
NSString *content_a1 = [[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"content"];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
// saving an NSString
[defaults setObject:title_a1 forKey:#"title_a1"];
[defaults setObject:content_a1 forKey:#"content_a1"];
WebBrowserViewController *webview=[[WebBrowserViewController alloc]initWithNibName:#"WebBrowserViewController" bundle:nil];
[self presentModalViewController:webview animated:YES];
}else if ([[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"action"] isEqualToString:#"a2"]){
NSString *title_a2 =[[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"title"];
NSString *content_a2 = [[AryStoreknowItem objectAtIndex:indexPath.row] objectForKey:#"content"];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
// saving an NSString
[defaults setObject:title_a2 forKey:#"title_a2"];
[defaults setObject:content_a2 forKey:#"content_a2"];
WebBrowserViewController *webview=[[WebBrowserViewController alloc]initWithNibName:#"WebBrowserViewController" bundle:nil];
[self presentModalViewController:webview animated:YES];
}else {
NSLog(#" other action key get! ");
}
}