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POUISwitch inside custom UITableViewCell not available
 

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    <p>I have a <code>UISwitch</code> inside a custom <code>UITableViewCell</code> (the subclass of which I call <code>RootLabeledSwitchTableCell</code>).</p> <p>The cell contains a <code>UILabel</code> and <code>UISwitch</code> next to each other.</p> <p>I have a <code>@property</code> called <code>keychainSwitch</code> that points to the switch inside this custom cell:</p> <pre><code>@interface RootLabeledSwitchTableCell : UITableViewCell { IBOutlet UILabel *textLabel; IBOutlet UISwitch *labeledSwitch; } @property (nonatomic, retain) IBOutlet UILabel *textLabel; @property (nonatomic, retain) IBOutlet UISwitch *labeledSwitch; @end </code></pre> <p>In my table view delegate, I have added a selector that is called if the switch state is flipped:</p> <pre><code>- (UITableViewCell *) tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSString *CellIdentifier = [NSString stringWithFormat: @"%d:%d", [indexPath indexAtPosition:0], [indexPath indexAtPosition:1]]; UITableViewCell *cell = [tv dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { switch (indexPath.section) { case(kMyFirstSection): { switch (indexPath.row) { case(kMyFirstSectionFirstRow) { [cellOwner loadMyNibFile:@"RootLabeledSwitchTableCell"]; cell = (RootLabeledSwitchTableCell *)cellOwner.cell; self.keychainSwitch = [(RootLabeledSwitchTableCell *)cell labeledSwitch]; [self.keychainSwitch addTarget:self action:@selector(keychainOptionSwitched) forControlEvents:UIControlEventValueChanged]; break; } // ... } } // ... } } </code></pre> <p>So this selector works correctly:</p> <pre><code>- (void) keychainOptionSwitched { NSLog(@"Switched keychain option from %d to %d", ![self.keychainSwitch isOn], [self.keychainSwitch isOn]); } </code></pre> <p>However, I cannot use the <code>UISwitch</code> instance's <code>-setOn:animated:</code> method to initialize its initial state:</p> <pre><code>- (void) updateInterfaceState { BOOL isFirstTimeRun = [[[NSUserDefaults standardUserDefaults] objectForKey:kIsFirstTimeRunKey] boolValue]; if (isFirstTimeRun) { [self.keychainSwitch setOn:NO animated:NO]; } } </code></pre> <p>From testing, <code>self.keychainSwitch</code> is <code>nil</code> which is causing <code>-setOn:animated</code> to do nothing, but I can still operate the switch and the <code>NSLog</code> statement will correctly print the switch state changes, e.g.:</p> <pre><code>[Session started at 2009-08-24 07:04:56 -0700.] 2009-08-24 07:04:58.489 MyApp[29868:20b] keychain switch is: nil 2009-08-24 07:05:00.641 MyApp[29868:20b] Switched keychain option from 1 to 0 2009-08-24 07:05:01.536 MyApp[29868:20b] Switched keychain option from 0 to 1 2009-08-24 07:05:02.928 MyApp[29868:20b] Switched keychain option from 1 to 0 </code></pre> <p>Is there something I am missing about setting <code>self.keychainSwitch</code> in the <code>UITableView</code> delegate method?</p>
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