Question

I am a newbie to iphone development and is not able to understand various methods and all. I want to create a collapsible table view which expands and collapse on click of a button.

I have following pieces in my puzzle

1) I guess I will have to use these two methods for animation

[collapsibleTableView deleteRowsAtIndexPaths:editableIndexArray withRowAnimation:UITableViewRowAnimationTop ];
[collapsibleTableView insertRowsAtIndexPaths:editableIndexArray withRowAnimation:UITableViewRowAnimationTop ];

but I am not sure about argument which I need to pass to deleteRowsAtIndexPath: method and insertRowsAtIndexPath: method.

2) I have an array which is the datasource for this table.

It would be great if you can make me understand how it exactly needs to be done.

Answer 1

got the answer and the implementation is

    - (NSArray*)indexPathsInSection:(NSInteger)section {
    NSMutableArray *paths = [NSMutableArray array];
    NSInteger row;

    for ( row = 0; row < [self numberOfRowsInSection:section]; row++ ) {
        [paths addObject:[NSIndexPath indexPathForRow:row inSection:section]];
    }

    return [NSArray arrayWithArray:paths];
}

-(NSInteger)numberOfRowsInSection:(NSInteger)section {

    return 4;
}


-(IBAction)expandCollapseMenu {

    NSArray *paths = [self indexPathsInSection:0];
    if (isExpanded) {
        isExpanded=NO;
        [actionBtn setTitle:@"Expand" forState:UIControlStateNormal];

        [menuTblView deleteRowsAtIndexPaths:paths withRowAnimation:UITableViewRowAnimationFade];


    }
    else {
        isExpanded=YES;
        [actionBtn setTitle:@"Collapse" forState:UIControlStateNormal];
        [menuTblView insertRowsAtIndexPaths:paths withRowAnimation:UITableViewRowAnimationFade ];
    }




}