CODEWITHSUNDEEP
iphoneobjective-cxcodecocoa-touchipad
Ethan Allen
Ethan Allen

Reputation: 14835

How do I make my UITableView cells always == nil when viewWillAppear happens? I want to completely reload all my cell views

How do I make my UITableView cells == nil (make them not cached) when viewWillAppear happens? I want to completely reload all my cell views every time I come to the view. The main reason is because the backgroundView image of the cells may changed because of "themes" I'm adding to the app.

[tblView reloadData] doesn't work on the cached views on the cell.

Upvotes: 0

Views: 637

Answers (3)

Mark Adams
Mark Adams

Reputation: 30846

I would use -tableView:willDisplayCell:forRowAtIndexPath: to determine and set the background views of your cell right before their drawn on screen. Obviously you'll want to use your datasource to determine which background view should be displayed.

Upvotes: 0

gamozzii
gamozzii

Reputation: 3921

Your cellForRowAtIndexPath method in your table view controller probably has two lines like:

static NSString *CellIdentifier = @"Cell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

These lines attempt to reuse a previously created/formatted cell. To stop this reuse, take these lines out and instead just always allocate a new cell (i.e. something the equivalent of below).

cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

Then when you do [tableView reloadData] in your viewWillAppear method it will always create brand new cells for each row rather than trying to reuse old ones.

Upvotes: 1

Nevin
Nevin

Reputation: 7819

Before you call reloadData, just let tableView:numberOfRowsInSection: return 0 first.

Then your table will have no row at all.

Upvotes: 0

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