I'm having trouble with a custom header in my UITableView.
In InterfaceBuilder, I'm creating a XIB file with a view, and then subclassing it to UITableViewHeaderFooterView. I'm adding in some subviews. Nothing special.
In my viewDidLoad routine, I'm calling "registerNib:forHeaderFooterViewReuseIdentifier".
Then, in my delegate method, tableView:viewForHeaderInSection, I'm calling:
UITableViewHeaderFooterView* theView = [self.tableView dequeueReusableHeaderFooterViewWithIdentifier:#"header"];
The weird thing, is that I'm getting some extra lines of graphic, at the bottom edge of my header. It actually looks like the "normal" header view peeking through. I have no idea how to fix this. I've checked the size of the header view, vs the height of the section header. I've also put in code to force the size of the section-header to be the same as the the view's height. Yet, I still can't explain this.
The thing to notice, in the "Simulator - Bad" image is the gray color in between my custom header, and the red area. The red area is my first cell. So there are these gray lines that aren't in my custom header, nor in my first cell.
Thanks for any help.
Are you returning the correct height in your - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section delegate call?
Did you specify the height of your section header? Like so:
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 40.0; // or whatever your header's height is
}
Related
I have a storyboard with several different types of prototype cells with UILabels containing dynamic data. In my storyboard, the cell looks like this:
The UILabel's Lines property is set to zero to allow multiple lines of text. It is pinned to the top, left, right of the content view and to the nearest neighbor on the bottom (the blue line). The blue line is pinned to the left and right of the content view and to the UILabel at the top, and the UITextView at the bottom.The UITextView is pinned to the content view on the bottom, left and right, and to the blue line at the top.
When I run the app I get the following:
So the UILabel is forcing everything else down, as it should be, but the cell's height does not change as I want it to and thus the text view is being clipped off by the cell's fixed height. It was my assumption that if everything were pinned at the top and bottom, then the content view would be forced to expand. What am I missing here? Thanks!
It seems you have set your constraints correctly, just make sure that delegates are as below:
-(CGFloat)tableView:(UITableView *)tableView
estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {
return 44;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewAutomaticDimension;
}
(If your constraints are set correctly from top to bottom)And that's it, you dont have to do anything else, auto layout will do its work smartly.
In addition to Auto-Layout constraint
try cell.contentView.LayoutIfNeeded statement in cellForRowIndexPath just before returning cell and HeightForRowAtIndexPath method
If you're sure all your vertical constraints are set and correct top to bottom, try setting tableView.rowHeight = UITableViewAutomaticDimension explicitly.
I'm attempting to dynamically resize a custom UITableViewCell to fit an attributed string's content. This is the result:
When I initialize my tableView I do the following:
self.chatsTableView.estimatedRowHeight = 72.0;
self.chatsTableView.rowHeight = UITableViewAutomaticDimension;
I also implemented the following method:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewAutomaticDimension;
}
As you can see it is resizing my height (the smaller allowed is 72). However, for some reason it's creating a weird effect. I'm using storyboard, and auto layout.
Move it to the - (void)tableView:(UITableView *)tableView
willDisplayCell:(UITableViewCell *)cell
forRowAtIndexPath:(NSIndexPath *)indexPath method.
You have to set estimatedRowHeight to UITableViewAutomaticDimension as well.
It should work only with the two properties you set , the row height and the estimated row height.
first try to remove the delegate method.
If the table "Jumps" a little when you scroll (because of a bug) then also implement the two delegate methods, heightForRow and estimatedHeightForRow and return the same values as you set in the properties , estimatedRowHeight = 72 and rowHeight = UITableViewAutomaticDimension.
If it's still doesn't work then I would double check the constraints.
For iOS 8+
Set up cell constraints. Make sure that ALL subviews that affects cell height are vertical connected. In this case: top edge of top label is pinned to superview's top AND top labels bottom edge is pinned to bottom's label top edge AND bottom's label bottom edge is pinned to superview's bottom. Vertical constraints chain have to be closed. In your case it looks like a bottom edge of bottom label is not pinned to contentViews bottom edge.
When dequeuing cell for reuse always use
dequeueReusableCellWithIdentifier:forIndexPath: not a shorter version without indexpath specified.
Set self.tableView.rowHeight = UITableViewAutomaticDimension;
Set self.tableView.estimatedRowHeight = 50.0;. This step is optional but helps table view proper manage things like scroll indicators etc.
Will work :)
I make one UITableView Controller had static cell. And I set number of rows 3 in Storyboard. But rows does not set 3, just be made more and more like this screen shot. I don't touch any programatic code. Did I have to make it programmatically?
That's the normal behavior of a UITableView. Even though you only have 3 rows, the view itself extends to the bottom, and it shows where the cells would be if you had data in them. To fix, do one of two things: customize the UITableView so the dividing line between cells is invisible [UIColor clearColor], or change the size of the UITableView's height depending on how many cells you have.
If you add a footerView to the UITableView then it will not extend all the way to the bottom.
I solve this problem on the story board.
Create one more cell. if you want 3cells, then make 4cells.
Make whatever you want on cell. put the UIButton or UILabel any way. But except 4th cell.
Expend your 4th cell's height, to the bottom.
And finally, check hidden in attributes inspector. It makes 4th cell hidden.
That's it!
And I add one image file. I hope it help your work. Thanks.
Simple solution is to set footer's frame to nil:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
/*........*/
tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
return cell;
}
I would use a regular View Controller and insert a TableView of the required table height.
Then if you really want to you can do stuff with the cell height and label sizes.
I have a UITableView with a UITableViewStyleGrouped style. I also add a table header view (not section but table). The problem is that there is a space between the start of the table view and the header view.
self.tableView.tableHeaderView = myHeaderView;
Any idea how I can get rid of this? This does not happen if I use a UITableViewStylePlain style
I think you are set headerView frame in viewController.
Design tableView headerView in storyboard itself.
or If you are not using storyboard/XIB change the header height.
Hop it will solve your problem .
Add the following code in the viewDidLoad of the class
self.tableView.backgroundView = nil;
Use this line --
self.automaticallyAdjustsScrollViewInsets = NO;
Override the following delegate method of UITableView to disabled the default margin.
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 0.01; // Removed the section header margin. (couldn't be 0 here, weird)
}
I have a UITableView in the grouped style, and only one section. However there is some blank space above and below the table view that is shown when the user scrolls too far. How can I remove this blank space?
You can do this by altering the contentInset property that the table view inherits from UIScrollView.
self.tableView.contentInset = UIEdgeInsetsMake(-20, 0, -20, 0);
This will make the top and bottom touch the edge.
Add this code:
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 0;
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
return 0;
}
Actually this question answered my question.
Reducing the space between sections of the UITableView.
UIView can be inserted at the top and bottom of the table(drag and drop). Set their properties as transparent and height of 1 px. This is to remove the extra padding in front of the cells.
you can also use this code for removing space between first cell of uitableview..
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return 0.002f;// set this...
}
Uncheck Extend Edges Under Top bar.
This answer comes quite late, but I hope it helps someone.
The space is there because of the UITableView's tableHeaderView property. When the the tableHeaderView property is nil Apple defaults a view. So the way around this is to create an empty view with a height greater than 0. Setting this overrides the default view thereby removing the unwanted space.
This can be done in a Storyboard by dragging a view to the top of a tableView and then setting the height of the view to a value of 1 or greater.
Or it can be done programmatically with the following code:
Objective-C:
CGRect frame = CGRectZero;
frame.size.height = CGFLOAT_MIN;
[self.tableView setTableHeaderView:[[UIView alloc] initWithFrame:frame]];
Swift:
var frame = CGRect.zero
frame.size.height = .leastNormalMagnitude
tableView.tableHeaderView = UIView(frame: frame)
Comments
As others have noted you can use this same solution for footers.
Sources and Acknowledgements
See the Documentation for more details on the tableHeaderView property.
Thanks to #liushuaikobe for verifying using the least positive normal number works.
My original answer: https://stackoverflow.com/a/22185534/2789144
In my case issue was with the constraints i was applying. I have to change them in order to show 2 rows in my case while bottom of table touching last row.
Use the bounces property of UIScrollView:
[yourTableView setBounces:NO];
This will remove what seems to be an extra padding at the top and bottom of your UITableView.
Actually, it will just disable the tableview's scrollview to scroll past the edge of the content.