In my UITableView, I have a tableHeaderView that should resize itself according to the content. The resizing works fine, however, the tableHeaderView obscures the first couple of cells. Apparantly changing the frame of the tableHeaderView doesn't reorganize the rest of the view.
I've already tried calling [self.tableView layoutSubViews] and [self.tableView setNeedsLayout], but those don't help either. Also tried giving the tableHeaderView from the Interface Builder an outlet to change the frame on that, but that doesn't reorganize the tableView either.
How can I change the size of the tableHeaderView, without hiding any cells, reorganizing the rest of the tableView?
Try setting the tableHeaderView property of the UITableView after you resized your content.
[self.tableView setTableHeaderView:self.myResizedTableHeaderView];
Solved the problem for me. Hope it helps.
I don't know how you created you UITableView, but I tried to create one with a tableHeaderView like you and it's resizing.
I created a class inheriting from UITableViewController
#interface MyTableViewController : UITableViewController {
}
#end
and for the implementation, in the viewDidLoad, I added:
UIView *header = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 100)];
[header setBackgroundColor:[UIColor redColor]];
self.tableView.tableHeaderView = header;
Related
I'm having an issue receiving touches in UICollectionViews contained within UITableViewCells. The desired effect is a UITableView with n rows of horizontally scrolling UICollectionViews. The view is displaying correctly but the collection views only receive touches in the top 44px. I imagine that the table view is still in the process of initialization when the collection views are created and that the collection views are using UITableView's default cell height when setting up their gesture recognizers. Relevant code is below.
In my UITableViewCell subclass, I create a container view for the UICollectionView:
- (void)layoutSubviews
{
if (!_collectionViewContainer) {
_collectionViewContainer = [[CVTCollectionViewContainer alloc] init];
_collectionViewContainer.frame = self.bounds;
[self.contentView addSubview:_collectionViewContainer];
};
}
In my container view, I instantiate a UICollectionView:
- (void)drawRect:(CGRect)rect
{
[super drawRect:rect];
if (!self.collectionView) {
UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
self.collectionView = [[UICollectionView alloc] initWithFrame:self.bounds collectionViewLayout:flowLayout];
self.collectionView.delegate = self;
self.collectionView.dataSource = self;
self.collectionView.backgroundColor = [UIColor clearColor];
flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
flowLayout.itemSize = CGSizeMake(130.0, 130.0);
[_collectionView registerClass:[CVTCollectionViewCell class] forCellWithReuseIdentifier:#"Collection view cell"];
[self addSubview:self.collectionView];
}
}
There's nothing interesting in my UITableViewController, just that I return 200 in tableView:heightForRowAtIndexPath:
It occurred to me that the layoutSubviews method of my UITableViewCell subclass may be the wrong place for initialization of the 'container' view for my UICollectionView. But, when I NSLog(#"cell: %#", self); in layoutSubviews, the cell's frame shows the desired height (200). Still, I have a feeling that I am doing my setup for the collection view too early, but I can't think of where else I might perform this work.
So, the gist: how can I add a UICollectionView to a UITableViewCell and make sure that the UICollectionView's gesture recognizers respond in the entirety of the collection view, rather than just the top 44 px?
Thanks in advance, as always.
Bit of a facepalm here, I was using a UITableViewController that was created in storyboard but mostly configured in code. In storyboard, I had not set the row height of the table view, so it was still at the default 44 px. Of course, the table view looked at IB for its initial config so, although tableView:heightForRowAtIndexPath: was being called and the cells were displaying correctly, the initial height set in IB was affecting how the cell's subviews were created.
I have a UIViewController with a UITableView on top of it. I am trying to put a small UIView overlay on top of the table view. I added it both programatically (and used bringSubviewToFront), and then in Interface Builder and it does not appear either way.
Why is that? How can I add the UIView overlay on top of the table view?
EDIT:
I am not using a UITableViewController. It's a UIViewController with a UITableView. Here is the code I used in viewDidLoad:
UIView *joinMediame = [[UIView alloc] initWithFrame:CGRectMake(0, 44, 320, 44)];
joinMediame.backgroundColor = [UIColor orangeColor];
[self.view addSubview:joinMediame];
[self.view bringSubviewToFront:joinMediame];
If you are intending for your view to scroll with the table content, I would make it the tableHeaderView of the table. If you want the view to be static at the top, I would add it as a subview of the controller and then resize the table view frame to make room for the static view.
Note that if the controller is a UITableViewController, self.view is a UITableView, so if you do something like [self.view addSubview:staticView] this won't have the effect you expect.
Im trying to add views inside custom UITableViewCells. I tried using the [cell.contentView addSubview] method but the views dont appear. What is it I have to do. Thanks
if you are using custom cell then go to your custom cell class and ...
UIView *contentView;
contentView =[[UIView alloc]init];
then set frames of your view...
finally
[self.contentView addSubview:contentView];
I'm looking for opinions on the best way to implement the following functionality. I have a UIViewController with a UITableView in Grouped Format. Each TableViewCell contains an NSString. When the User taps on a cell I'd like to in my didSelectRowForIndexPath method popup a UIView with a single textfield, that's prepopulated with the NSString in the given cell that was selected. The reason for displaying the UIVIew is I want it to be about 280 x 380 frame and still see some of the UITableView.
The goal being that it behaves like a ModalViewController except for the iPhone. Does anyone have any suggestions on how to implement this behavior or if there is a better implementation?
Create the UIView (with the UITextField inside) beforehand, and make it hidden:
// Of course, these instance variable names are made up, and should be changed
self.myModalView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 280, 380)] autorelease];
[self.view addSubview:self.myModalView]
self.myTextField = [[[UITextField alloc] init] autorelease];
[self.myModalView addSubview:self.myTextField];
self.myModalView.hidden = YES;
Then, when the user selects a row, populate the text field and show the modal view:
- (void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath {
// Replace stringAtIndexPath with however your data source accesses the string
NSString* myString = [self stringAtIndexPath:indexPath];
self.myTextField.text = myString;
self.myModalView.hidden = NO;
}
If you want to get fancy, you can do some CATransition stuff before showing the modal view.
I think you can use "addSubView" in UITableView. Add the ModalView to your UITableView directly. It will work.
Use some animation to implement this effect. When the UIView appears, it will lift the UITableView, like some keyboard behavior. So, you have to addSubView on the self.view and modify the UITableView's frame. And, the UITableView should be a child view of self.view, if self.view is the same as the UITableView, then you has no self.view for adding this UIView.
When I add a subview to my UITableViewController, it seems to be underneath the tableview. I may be loading my subview incorrectly, or calling addSubview in the wrong place. The subview I'm referring to is the red area above the tabbar that also contains the "Click me" button:
You can see that the cell lines kind of overlap. Here is where I'm adding the subview in my TableViewController:
- (void)viewDidLoad {
[super viewDidLoad];
CGRect hRect = CGRectMake(0, 170, 320, 480);
HomeScreenOverlayView *homeView = [[HomeScreenOverlayView alloc] initWithFrame:hRect];
[self.tableView addSubview:homeView];
[homeView release];
}
Any ideas? Thanks!
I have had this issue myself and resolved it by not adding a view to the table, but rather adding the view to the table's superview.
UIView *viewToAdd = [[UIView alloc] initWithFrame: self.view.frame];
[self.view.superview addSubview: viewToAdd];
This is particularly useful when you want to mask the entire table (e.g. loading screens).
N.B. I will usually add this to viewWillAppear: in the view's lifecycle.
When you call addSubview, it is probably the first view added to the table view. Later, all the cells and support views will be added over your view.
The best thing to do is create an empty view and add both the table view and overlay view to it, making sure the overlay view is above the table view.
Views serve the 3 roles of drawing, interaction and layout. It is fine to have a view that only fills one of those roles.
You can use - (void)sendSubviewToBack:(UIView *)view or - (void)insertSubview:(UIView *)view atIndex:(NSInteger)index. addSubview always puts the new view in front.
EDIT: Sorry, misread the question, it looks like you want the subview to be in front.