I recently added a segmented control to a section header of my tableview, everything works fine, but it resizes the wrong way .. i want to apply some margin, but if i set the frame it does not have any effect on the size of the segmented control ? What i am doing wrong ? here is my code :
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
if(section == 0) {
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:#[#"Segment 1", #"Segment 2",#"Segment 3"]];
segmentedControl.backgroundColor = [UIColor colorWithWhite:1.0 alpha:0.95];
[segmentedControl setFrame:CGRectMake(10, 0, self.view.bounds.size.width-10, self.view.bounds.size.height)];
return segmentedControl;
}
return nil;
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
if(section == 0) {
UIView * viewHeader = [[UIView alloc]initWithFrame:CGRectMake(10, 0, self.view.bounds.size.width-10, self.view.bounds.size.height)];
[viewHeader setBackgroundColor:[UIColor clearColor]];
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:#[#"Segment 1", #"Segment 2",#"Segment 3"]];
segmentedControl.backgroundColor = [UIColor colorWithWhite:1.0 alpha:0.95];
[segmentedControl setFrame:CGRectMake(10, 0, viewHeader.frame.size.width , viewHeader.frame.size.height)];
viewHeader addSubview:segmentedControl
return viewHeader;
}
return nil;
}
You're returning UISegmentedControl instance and for obvious reasons you can't configure much inside the control. Instead of that try to create a UIView as a header view and add segmented control inside as a subview. This way you will be able to configure position of segmented control inside this container view just fine.
Related
I have set header back ground using the code below but I want to change the color of header back again on run time when I click on the button that is added as a subview on the header.
please provide me code, thanks in advance :)
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
header = [[UIView alloc]initWithFrame:CGRectMake(0, 0, _tableView.bounds.size.width, 50)];
header.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"homeCellHeaderBackGround.png"]];
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(10, 10, 100, 30)];
label.text = _array[section][#"name"];
label.textColor = [UIColor whiteColor];
[header addSubview:label];
UIButton *button = [[UIButton alloc]initWithFrame:CGRectMake(230, 10, 70, 35)];
[button addTarget:self action:#selector(onExpandButton:) forControlEvents:UIControlEventTouchUpInside];
//[button setTitle:#"Expand" forState:UIControlStateNormal];
[button setTag:section];
[header addSubview:button];
return header;
}
You can modify it in run time by:
first:
you can declare a global variable/propery like:
#property (nonatomic) UIView *tableHeader;
and set it under -(void)viewDidLoad
like
self.tableView.tableHeaderView = self.tableHeader;
or using the delagate:
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
return self.tableHeader;
}
and modify it anywhere you like, but dont forget to reload you table section header, probably [tableView reloadSections:NSIndexSet withRowAnimation:UITableViewRowAnimation]; will do.
But
In your case you can retreive/get the tableHeader made inside the delegate:
-(UIView *)tableView:tableView viewForHeaderInSection:section
by
UIView *tableHeaderView = [self tableView:yourTableView viewForHeaderInSection:yourSection];
then modify tableHeaderView..
or simply reassign tableHeader by:
yourTableView.tableHeaderView = tableHeaderView;
your by using header alone, since as i can see it's a global variable..
change/update it directly like:
header.backgroundColor = [UIColor yourNewColor];
hope i've helped you.. happy coding, cheers..
You can change the background color of the section header by following code:
- (IBAction)onExpandButton:(id)sender {
UIView *header = ((UIButton *)sender).superView;
header.backgroundColor = <Whatever UIColor you like>;
...
}
-(IBAction)onExpandButton:(UIButton *)sender
{
UIView *tmpView = [self.YourTableViewName headerViewForSection:sender.tag];
tmpView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"homeCellHeaderBackGround.png"]];
}
-You got the view from your table view header for section method. After you can set your image view on view.
I'm creating a UITableView with more section "closed". When I tap on a section, with a workaround, I make the section explode showing the rows for that section. The problem that I have is that I have to animate the header to collapse it to an half of its width.
This is the code I'm using
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
Sport *sport = [self.sportList objectAtIndex:section];
UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, tableView.frame.size.width, SECTION_HEIGHT)];
headerView.backgroundColor = [UIColor colorWithRed:31.0/255.0 green:59.0/255.0 blue:143.0/255.0 alpha:1.0];
UILabel *sportTitle = [[UILabel alloc] initWithFrame:CGRectMake(10.0, 2.0, tableView.frame.size.width, SECTION_HEIGHT-4)];
sportTitle.textColor = [UIColor whiteColor];
[headerView addSubview:sportTitle];
UIButton *sportButton = [[UIButton alloc] initWithFrame:headerView.frame];
[sportButton addTarget:self action:#selector(didSelectedButton:) forControlEvents:UIControlEventTouchUpInside];
[sportButton setTitle:#"" forState:UIControlStateNormal];
[sportButton setBackgroundColor:[UIColor clearColor]];
sportButton.tag = section;
[headerView addSubview:sportButton];
return headerView;
}
This is the selector:
-(void)didSelectedButton:(UIButton *)_button
{
if (self.delegate && [self.delegate respondsToSelector:#selector(didSelectedSport:)])
{
[self.delegate didSelectedSport:sport];
}
}
The delegate updates only the dataSource and calls the reloadData, making possible the explosion/collapse of the sections. But now I want to animate the changes to the width of the header for that section, is it possible? Thanks
EDIT: I can modify the header using the property superview of the UIButton in the selector, but I have to do it after the controller drew it
Try using the function below. Set your superview of uibutton as the from view in the method.
Create another view with your needed width and set it as to view in the method. Give a animation of choice in options.
[UIView transitionFromView:from
toView:to
duration:.5
options:UIViewAnimationOptionTransitionFlipFromBottom
completion:^(BOOL finished) {
}];
I have a UITableViewCell as a subview in a custom view controller. It works great except that when it scrolls to its top or bottom of its contentSize limit, it "keeps going" and leaves some white space exposed behind it. This is particularly irritating because I do have a UIView covering the entire screen behind the tableView, and that view is set to a non-white color. I also added a subview exactly underlaying the tableview with the same background color, again attempting to block the white. I also set the UIApplication Window background color to a non white color. None of this worked.
I would have thought that even if my TableView bounces around its origin frame, the "exposed" view should match the underlying view rather than be white. How can I fix my tableView so that it retains all its scroll properties but doesn't reveal white when it bounces around at the end of a scroll?
Here is a screen shot of the effect. The white appears the tableViewHeader and below a UISCrollView that occupies the top of the screen. This appears when I scroll the tableView all the way to one extreme. The white space appears at the bottom rather than the top of the tableView if I scroll all the way to the other end.
Here's the relevant code, quite vanilla I think:
#interface JudgeViewController () <UITextFieldDelegate, UITextViewDelegate, UINavigationControllerDelegate, UIGestureRecognizerDelegate, UITableViewDataSource, UITableViewDelegate, UIViewControllerRestoration, UIScrollViewDelegate>
#property (nonatomic) UITableView *tableView;
#end
functions to set tableViewCells
#pragma mark - tableview appearance and actions
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
StatsViewController *svc = [[StatsViewController alloc] init];
svc.user = self.object.answerUser[indexPath.row];
svc.fromJudge = YES;
[self.navigationController pushViewController:svc animated:YES];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.object.answerArray count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell;
UILabel *label = nil;
cell = [tableView dequeueReusableCellWithIdentifier:#"Cell"];
if(cell ==nil)
{
cell = [[UITableViewCell alloc] initWithFrame:CGRectZero];
label = [[UILabel alloc] initWithFrame:CGRectZero];
[label setLineBreakMode: UILineBreakModeWordWrap];
[label setMinimumFontSize:SMALL_FONT_SIZE];
[label setNumberOfLines:0];
[label setFont:[UIFont systemFontOfSize:SMALL_FONT_SIZE]];
[label setTag:1];
// [[label layer] setBorderWidth:2.0f];
[[cell contentView] addSubview:label];
}
CGFloat width = [[UIScreen mainScreen] bounds].size.width;
CGFloat height = [[UIScreen mainScreen] bounds].size.height;
NSString *text = self.object.answerArray[indexPath.row];
CGSize constraint = CGSizeMake(.8*CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN)*2, 200000.0f);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:SMALL_FONT_SIZE] constrainedToSize:constraint];
if(!label)
label = (UILabel *)[cell viewWithTag:1];
[label setText:text];
[label setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, .8*CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN)*2, MAX(size.height, 44.0f))];
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button1.frame = CGRectMake(.85*width, label.frame.size.height/2-2*CELL_CONTENT_MARGIN, .12*width, 20);
[button1 setTitle:#"UP" forState:UIControlStateNormal];
button1.titleLabel.font =[UIFont systemFontOfSize:SMALLEST_FONT_SIZE];
[button1 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button1 addTarget:self action:#selector(upVoteA:) forControlEvents:UIControlEventTouchUpInside];
[cell.contentView addSubview:button1];
[cell.contentView bringSubviewToFront:button1];
UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button2.frame = CGRectMake(.85*width, label.frame.size.height/2+2*CELL_CONTENT_MARGIN, .12*width, 20);
[button2 setTitle:#"DOWN" forState:UIControlStateNormal];
button2.titleLabel.font =[UIFont systemFontOfSize:SMALLEST_FONT_SIZE];
[button2 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button2 addTarget:self action:#selector(downVoteA:) forControlEvents:UIControlEventTouchUpInside];
CGFloat moduloResult = indexPath.row % 2;
if(moduloResult>0)
{
cell.backgroundColor = [UIColor colorWithRed:1 green:0.647 blue:0 alpha:.6];
}
else
{
cell.backgroundColor = [UIColor colorWithRed:1 green:0.647 blue:0 alpha:.4];
}
cell.opaque = NO;
cell.alpha = 0.2;
[cell.contentView addSubview:button2];
[cell.contentView bringSubviewToFront:button2];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}
-(void)keyboardToJudge
{
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row < [self.object.answerArray count])
{
NSString *text = self.object.answerArray[indexPath.row];
CGSize constraint = CGSizeMake(.8*CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN)*2, 200000.0f);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE-2.0f] constrainedToSize:constraint];
CGFloat height = MAX(size.height, 44.0f);
return height + (CELL_CONTENT_MARGIN)*2;
}
else
{
return 200.0f;
}
}
functions setting out layout:
-(void)viewDidLoad
{
...among other things setting up top scroll view (top part of view with gray background and orange text)...
if(self.navigationController.navigationBar.frame.size.height>0)
{
self.scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 5, width, height*SCROLL_VIEW_OFFSET)];
}
else
{
self.scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, statusBarHeight+5, width, height*SCROLL_VIEW_OFFSET)];
}
self.scroll.backgroundColor = BACKGROUND_COLOR;
self.scroll.contentSize =CGSizeMake(width, .5*height);
self.scroll.delegate = self;
self.scroll.contentInset = UIEdgeInsetsMake(30, 0, 30, 0);
[self.scroll setShowsHorizontalScrollIndicator:NO];
...adding buttons to self.scroll...
[self.view addSubview:self.scroll];
....
self.tableView = [[UITableView alloc] initWithFrame:frame];
self.tableView.delegate = self;
self.tableView.dataSource = self;
self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, _width, _height*.1)];
self.tableView.tableFooterView.backgroundColor = BACKGROUND_COLOR;
self.tableView.tableHeaderView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, _width, _height*.1)];
self.tableView.tableHeaderView.backgroundColor = BACKGROUND_COLOR;
....tableView hidden state is changed to yes in another function if row count is zero but not usually...
self.tableView.hidden = NO;
[self.view addSubview:self.tableView];
...
}
Finally, I also call :
[self.tableView reloadData];
after reloading data from a webserver and depending on the results either set the tableView to hidden or not (not hidden if there are results to display). That should be every line of code that touches the tableView subview.
Add to your viewDidLoad
[self.tableView setBackgroundColor:BACKGROUND_COLOR];
Set the background color of your tableView and you'll be fine
Change this line:
self.scroll.contentInset = UIEdgeInsetsMake(30, 0, 30, 0);
To this:
self.scroll.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
You are adding a footer to your tableview with that line. The following image is from the IOS dev Library
Set the table view estimate to 0 (Uncheck Automatic) in the size inspector
I want to add a view under the header of a section in a UITableView. Is that possible? Here's my code so far, with that code it replaces the section:
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if (section == 4) {
return 10;
} else
{
return 20;
}
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
if (section == 4) {
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 10)];
view.backgroundColor = [UIColor blackColor];
return view;
} else {
return nil;
}
}
Conceptually, I wouldn't think of this as adding another view underneath your header. Instead, consider making your header the height that you want the header to be + the height of the black line. Then, all you have to do is create an additional view (the black line) and add it as a sub view of the header, ex
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 10)];
view.backgroundColor = [UIColor whiteColor];
UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0.0, view.frame.size.height - 2.0, view.frame.size.width, 2.0)];
[lineView setBackgroundColor:[UIColor blackColor]];
[view addSubview:lineView];
I provide a custom section header via the tableView's delegate method. It works fine in plane mode but I can't figure out the correct margin in grouped style.
Does anyone know how to make the section header aligned with the tableView cells?
You can create a custom label and adjust its frame accordingly.
For eg.
- (UIView *)tableView:(UITableView *)aTableView viewForHeaderInSection:(NSInteger)section
{
UIView *view=[[UIView alloc] initWithFrame:aTableView.tableHeaderView.frame];
UILabel *label=[[UILabel alloc] initWithFrame: CGRectMake(//set frame of the label as you want)];
[label setFont:[UIFont fontWithName: size:]];
[label setTextColor:[UIColor blackColor]];
[label setShadowOffset:CGSizeMake(0.0f, 1.0f)];
[label setShadowColor:[UIColor redColor];
label.backgroundColor=[UIColor clearColor];
if(section==0)
{
[label setText://set your section0 title];
}
else if(section ==1)
{
[label setText://set your section1 title];
}
[view addSubview:label];
[label release];
return [view autorelease];
}
Hope this helps :)
Not tested in every flavor but a good starting point.
In
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
pass the tableView.style parameter to your own method providing the header.
Create a view a frame like
CGRect(0,0,CGRectGetWidth(tableView.frame), CGRectGetHeight(tableView.frame)
but add a subview with a frame
CGRectInset(frame, 30,0)
if you have a grouped tableView style. Set a the autoresizingMask to flexible width and it works.
Slightly modified in a way that I had to give an additional parameter to the creation method for the SectionHeaderView as the margin is different for presentationStyle FullScreen and Formsheet.
CGFloat margin = 0;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
margin = style == UITableViewStyleGrouped ? modalStyle == UIModalPresentationFormSheet ? 28 : 38 : 0;
}
else {
margin = style == UITableViewStyleGrouped ? 5 : 0;
}
UIView *view = [[UIView alloc] initWithFrame:CGRectInset(frame, margin, 0)];
view.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[self addSubview:view];