I'm creating a ViewController that will contain as a portion of it a scrollView. In that scrollView I would like to include the view of another ViewController. When I set up this ViewController inside of the ScrollView, all of that ViewController's data is pulled from the web and even it's "ViewDidLoad" method is called. However, nothing appears except for the tableViewLines and a spinner I've created to show the page is loading. Here is what it looks like (the ScrollView in question is under Commitments and Awards):
What should be loaded inside the scrollView is a tableView that looks like this:
It may be that the tableview's delegate/datasource are not set correctly. Could you check whether tableView:numberOfRowsInSection: and tableView:cellForRowAtIndexPath: are called or not?
It is not a good idea to show view of one view controller in another view controller view. Apple does not recommend it. what ever you want to do, do it in the same view controller.
Related
I have a HomeViewController which is loaded with views. On the top is the map view, so now when I create the table view on the top of it which does not cover the whole screen but little portion of it(actually its a drop down list in the form of tableview), it displays fine with cellForRowAtIndexPath working fine but didSelectRowAtIndexPath is not working at all.. I have tried using break point on it but its not calling this method actually infect it is selecting the view at the back i.e. the map view. Clicking on the table view is actually changing the map view behind..
I am having the table view coming from another class which is inherited by the HomeViewController
I am using some NIDropDown class .. Its working fine if no view is behind it (only superview) but not woking if it has any view behind
Few things to be ensured-
1) As you said your table view is on top of the map view. If this is the case than it's alright.
2) Check if the user interaction is enabled for the table view or not.
3) Check if you have set the delegate of the table view(responsible for detecting events on table view).
4) Check if you have not set the delegate to nil somewhere and still the table view is visible.
I think if you follow the above steps than table view's events should be triggered, otherwise it will be good if you post your code to get some other clue regarding the issue.
That cellForRowAtIndexPath works is an indication that the datasource property (UITableViewDataSource) is properly set.
If didSelectRowAtIndexPath is not firing, you should check if the delegate property (UITableViewDelegate) is properly set, either in Interface Builder or in code.
After read your problem, i strongly believe there will be two issue :
1) Map view issue, if you shows table view as *callout view
Reason:
You supposed to use “MKAnnotationView” callout view for show drop down over map.
if you do so then make sure MKAnnotationView view height would be exact same of your drop down view’s(NIDropdown view’s) height.
Table view not able to get touch, that's why it would not send message of didSelectRowAtIndexPath to it's deletegte.
In your case might be Map view getting touch, which did not suppose to get until table view is at screen.
2) Table view rest out of bound on super view
Reason:
in such case table view display normally but actually its bound goes out of own super view bound.
I have a custom view controller I load from a Storyboard. When I try to set one of its subviews nothing happens (remains generic white view). What I don't understand is if I try to set VC.view it works fine. Why is this? Everything seems to be initialized after I load from the Storyboard. Where would I set the VS's subview?
Yes, this slightly confusing behaviour is how it is 'supposed' to work. When a view controller is loaded, its view is not - at least not until it is actually needed. See this doc for further info. Only when the view controller is presented, will it then load the view. As you have found, this is tiresome, because you often want to set some of the the subviews' properties before it is presented (say in a prepareForSegue or prior to pushViewController: or presentViewController:).
There is a work around - based on what you have observed. If you directly access the view property, the view controller will immediately load the view and all its subviews. So, if you want to set subview properties, just "touch" the view itself:
NSLog(#"View tag is %i", viewController.view.tag);
and you should then be able to access the subviews.
Alternatively, you could pass the relevant data in (non-UI) properties of your view controller, and then set up the subviews using that data during viewDidLoad or viewWillAppear.
I'm trying to change the size of a tableView I have in interface builder and can't seem to. When I first started the app I could drag it around and stretch the sides but all of a sudden I can't adjust it. I tried to delete my tableView and add a new one but the same thing happened. Thanks in advance. Here's what I see when I try to change the size:
if your using a UIViewController you can drag and drop a tableView and can place in a custom position you want. but if your using a UITableViewController you cant move the tableView to your custom position. if you want to do it in UITableViewController you can do like below
if you want your tableView content should show from a point, that you want you can do this way,
[self.tableView setContentInset:UIEdgeInsetsMake(100,0,0,0)];
else if you want set your tableView to a frame in UITableViewController you do this way,
- (void) viewWillLayoutSubviews
{
[super viewWillLayoutSubviews];
self.tableView.frame = CGRectMake(0,100,320,300);
}
hope this will help you.
What kind of view controller are you using to manage your table view? Since you show "prototype cells", I'm guessing it's a UITableViewController. Those are built to fill the entire screen with a single table view (which has always annoyed me.)
Starting with iOS 6, though, you can create a "container" view in another view controler, and then drag an embed segue from your container view onto the table view controller. That does all the housekeeping to make the table view controller a child view controller of the other one, and then you can make it whatever size you want.
If you don't want to use a UITableViewController as a child of another view controller, you can use a regular view controller and wire up the data source and delegate methods yourself. However, things like static table views and prototype cells don't work then.
Hopefully this helps someone still coming across this problem. What I did was make sure the UIViewController had a UIView as its direct child, then dragged the UITableView as a child of the UIView, this allowed me to resize the UITableView.
I'm struggling with this problem, so I need your help. Basically I've programmed a complex table view controller (with NSFetchedResults protocol etc) and already used it in my app and it worked great. Since I want now exactly this table view inside another view (so I can add a small subview at the bottom of the screen), I'm really struggling how to do this! I know by know how to embed a simple table view inside another view and link it to it's view controller.
But how can I do this in my case with as little effort as possible? I mean can I somehow use this table view controller I already have even though the superview must have its own view controller?! And how would I do that? Sorry I'm still a beginner :)
Since you already have a TableViewController. To add it as an subview to another ViewController's (self) view, do this:
TVC = <your tableViewController instance>;
[self addChildViewController:TVC];
TVC.view.frame = <your desired frame>;
[self.view addSubview:TVC.view];
adding the TVC as childViewController will forward UI methods of 'self' like willAppear and all to TVC.
I'd like to have the section header (for an UITableView) for the uppermost cell only , a sort of header for the table that sticks to the top, showing some additional information about the uppermost cell.
is it somehow possible? if not (as I suppose since I've carefully read all the documentation) do you have any idea how to replicate this behaviour?
You need to create your own view to use as the header. It will be simplest to make your custom header view be a sibling of the table view, and position it so that it's above the table view on the screen.
Since UITableView is a subclass of UIScrollView, your table view's delegate is also a scroll view delegate and receives the UIScrollViewDelegate messages. You want to implement this method:
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
Each time your delegate receives that message, you want it to look at which table view row is at the top of the table view (using [tableView indexPathForRowAtPoint:tableView.contentOffset]) and update the contents of your custom header view accordingly.
Read the Apple documentation for UITableView. The property you're looking for is tableHeaderView.
This is hard (not impossible) with UITableViewController because it forces the tableView to be the root view.
If you implement your own controller, inherit from UIViewController instead of UITableViewController.
You must adopt the data source and delegate protocols, and implement the methods appropriately, but then you have a normal view as your root view. You can then add a UITableView in any location and size you want, with anything you want around it.
The only real restriction is static table views you build in IB. However, in that case, you can implement view controller containment, and just parent your table view controller into another controller, and give it a specific view to take over.
The first option is dead simple, but the second is an advanced technique, and you need to understand view controller containment to do it right.