Re: UITableViewController with dynamic data
Re: UITableViewController with dynamic data
- Subject: Re: UITableViewController with dynamic data
- From: "Mohan Parthasarathy" <email@hidden>
- Date: Wed, 14 Jan 2009 12:57:40 -0800
Yes, that's what i meant. Just to confirm.. It is safe to assume that
numberOfSectionsInTableView will be first function called ? I am thinking of
this sequence..
1) The code receives low memory warning and frees up the data that the
tableView is currently displaying
2) CellForRowAtIndexPath is called now for Nth Row.
(2) in my code would reference the data that has been freed in step (1). Is
it possible to invalidate the tableView Data also while freeing memory at
step (1) ?
thanks
mohan
On Wed, Jan 14, 2009 at 12:32 PM, Luke the Hiesterman <email@hidden>wrote:
> I assume you meant numberOfSectionsInTableView:....anyway, a good strategy
> might be to just go ahead and return 0 initially, and then whenever you have
> successfully pulled your data from the network, do [tableView reloadData]
> and then you can return the appropriate numbers at that time, since they
> will be ready.
>
> Luke
>
>
> On Jan 14, 2009, at 12:24 PM, Mohan Parthasarathy wrote:
>
> Hi,
>>
>> I am using a UITableViewController and the data for the table view is
>> generated dynamically (fetched from the network). The data is normally
>> fetched based on some search. But when the Controller is loaded and i
>> don't
>> have the data ready, i want to return something back sane and later reload
>> the data when it becomes ready. What is the best way to do this ?
>>
>> -numberOfSectionsinRow : Is it safe to assume that this function is called
>> always *first* before constructing the table ? At least i want to be able
>> to
>> initiate the fetch (if it is not already done before) here.
>> -As i can't return 0 for numberOfSectionsInRow, i still have to return 1
>> there and in numberOfRowsInSection, return zero till the data becomes
>> available
>>
>> The problem is that i need to initiate the fetch somewhere during the
>> table
>> construction and i don't want to put hooks into all of the tableView
>> delegate methods. As the data for the tableview is dynamic, i need to tell
>> the framework not to call the other delegate methods till i return
>> something
>> valid in numberOfSectionsInRow/numberOfRowsInSection. Is this a safe
>> assumption ?
>>
>> thanks
>> mohan
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