Re: UIBarButtonItem exclusive touch
Hi,
Thanks for your response !
I missed something.In the thread method saveTheData, I do call the
popToRootViewController on the main thread by using
performSelectorOnMainThread:.
It seems that both of the two functions(saveAction: and tableView's delegate
method) are invoked. And the navigation controller first pop all view
controllers to the root. And then push the detail view controller, and
sometimes it push to the detail view and then pop to the root. So is there
any tips about the synchronization?
Thanks again!
2011/8/30 Conrad Shultz con...@synthetiqsolutions.com
Sorry, I don't have time right now to fully respond, but first thing's
first: UIKit is generally not thread-safe, so you should not invoke user
interface actions (like popping a nav controller) on a secondary thread.
This is a situation where GCD can make your life a lot simpler (with nested
dispatch_async() calls)...
(Sent from my iPhone.)
--
Conrad Shultz
www.synthetiqsolutions.com
On Aug 29, 2011, at 19:34, Leon Qiao leon.qiao@gmail.com wrote:
Dear all,
The UI I made is like the system app Contact, there's an add bar
button
on the navigation bar. And a table view where you can tap and enter the
detail view. The problem is when the user tap the bar button item and the
table view cell at the same time, it doesn't work well.
The code here:
Action for right bar button item:
- (IBAction)saveAction: (id)sender;
{
...
...
[NSThread detachNewThreadSelector:@selector(saveTheData)
toTarget:self
withObject:nil];
}
- (void)saveTheData
{
//some save action...
[self.navigationController popToRootViewControllerAnimated: YES];
//when complete, pop to the root
}
Action for table view's delegate method
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
DetailViewController *controller = [[DetailViewController
alloc]init];
[self.navigationController pushViewController: controller animated:
YES];
[controller release];
}
When using UIButton, we can set the exclusive touch property to avoid
tapping the two buttons at the same time. But what should I do for the
table
view and the bar button item.
Thanks a lot!
Best regards
Leon
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Leon
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Re: iOS rotate to interface orientation problem
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Dear all, I plan to use the UIWebView to display the preview of some image files. It works well when opening the common files. But it seems some special formats (such as CRW, Canon Camera Raw file) are not supported. It can be viewed via the QLPreviewController. Is there any better way to do the file preview function? Thanks. -- Best regards Leon ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
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