I have a UITableView with six rows. There is a "+" sign at the left of each row. On clicking that, details should appear. For example a description of the data.
On clicking it again, the detail should vanish. How can I implement this?
Please help me.
Thanks in advance.
//here is a code i made for FAQ
//hope it answers your question
//if you want to test it, you just need to hook up your table view to _faqTableView
#import "ViewController.h"
@interface ViewController ()
{
NSArray *questions;
NSArray *answers;
NSMutableArray *datasource;
NSIndexPath *insertedLocation;
NSIndexPath *answerIndexPath;
}
-(void)deleteFrom:(UITableView *)tableView atIndexPath:(NSIndexPath *)indexPath;
-(void)insertInto:(UITableView *)tableView atIndexPath:(NSIndexPath *)indexPath;
@end
@implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
_faqTableView.dataSource = self;
_faqTableView.delegate = self;
questions = [NSArray arrayWithObjects:@"What", @"is", @"your", @"name", nil];
answers = [NSArray arrayWithObjects:@"kdjfl", @"kdlfjs", @"kdljfel", @"kjldfkjsle", nil];
datasource = [NSMutableArray arrayWithArray:questions];
insertedLocation = [NSIndexPath indexPathForRow:[datasource count] inSection:0];
answerIndexPath = insertedLocation;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [datasource count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = @"FAQ Cell Identifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (!cell) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
if (indexPath.row != answerIndexPath.row) {
cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
} else {
cell.textLabel.numberOfLines = 0;
}
cell.textLabel.text = [datasource objectAtIndex:indexPath.row];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row != insertedLocation.row) {
[tableView beginUpdates];
if (indexPath.row == insertedLocation.row -1 &&
insertedLocation.row!= [datasource count]) {
[self deleteFrom:tableView atIndexPath:[NSIndexPath indexPathForRow:indexPath.row +1 inSection:0]];
insertedLocation = [NSIndexPath indexPathForRow:[datasource count] inSection:0];
} else {
NSInteger i = indexPath.row;
if (insertedLocation.row != [datasource count]) {
[self deleteFrom:tableView atIndexPath:insertedLocation];
if (insertedLocation.row < i) {
i --;
}
}
insertedLocation = [NSIndexPath indexPathForRow:i + 1 inSection:0];
[self insertInto:tableView atIndexPath:insertedLocation];
}
[tableView endUpdates];
NSLog(@"inserted row %d", insertedLocation.row);
}
}
-(void)deleteFrom:(UITableView *)tableView atIndexPath:(NSIndexPath *)indexPath
{
[datasource removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
-(void)insertInto:(UITableView *)tableView atIndexPath:(NSIndexPath *)indexPath
{
[datasource insertObject:[answers objectAtIndex:indexPath.row - 1] atIndex:indexPath.row];
[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationBottom];
answerIndexPath = indexPath;
}
@end
if you can build your app for iOS5 only, check out the WWDC 2011 Session 125 Video
UITableView Changes, Tips & Tricks https://developer.apple.com/videos/wwdc/2011/
It explains how it can be done. If you have to support older versions it will at least give you an idea!
