Unable to center a imageView in a tableView Footer - ios

I am trying to center a label and an image in a tableView Footer
I can't seem to make it work for both device iPhone and iPad
Right now it is centered on the iPhone but that's because I hardcoded it.
-(UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section{
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 50)];
[view setBackgroundColor:[UIColor clearColor]];
UILabel *lbl = [[UILabel alloc] initWithFrame:CGRectMake(0, 15, self.view.bounds.size.width, 20)];
lbl.lineBreakMode = NSLineBreakByWordWrapping;
lbl.numberOfLines = 0;
[lbl setText:#"Powered By"];
[lbl setFont:[UIFont systemFontOfSize:10]];
[lbl setTextAlignment:NSTextAlignmentCenter];
[lbl setTextColor:[UIColor blackColor]];
District *school = [District new];
UIImageView * logoView = [[UIImageView alloc]initWithFrame:CGRectMake(50, 25, 150, 37.5)];
logoView.image = [UIImage imageNamed:#"Logo.png"];
[logoView autoresizingMask];
[view addSubview:logoView];
[view addSubview:lbl];
return view;
}
I would like to center this view, without hardcoding it. I tried taking the screen size and divide by 2.
It did not center, what is the right approach, please advise.

You need to set the view's autoresizingMask as needed.
- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 50)];
[view setBackgroundColor:[UIColor clearColor]];
CGRect lblFrame = view.bounds;
lblFrame.origin.y = 15;
lblFrame.size.height = 20;
UILabel *lbl = [[UILabel alloc] initWithFrame:lblFrame];
lbl.autoresizingMask = UIViewAutoresizingFlexibleWidth;
lbl.lineBreakMode = NSLineBreakByWordWrapping;
lbl.numberOfLines = 0;
[lbl setText:#"Powered By"];
[lbl setFont:[UIFont systemFontOfSize:10]];
[lbl setTextAlignment:NSTextAlignmentCenter];
[lbl setTextColor:[UIColor blackColor]];
District *school = [District new];
CGRect logoFrame = CGRectMake((view.bounds.size.width - 150) / 2.0, 25, 150, 37.5);
UIImageView * logoView = [[UIImageView alloc]initWithFrame:logoFrame];
logoView.image = [UIImage imageNamed:#"Logo.png"];
logoView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
[view addSubview:logoView];
[view addSubview:lbl];
return view;
}
This assumes the label should fill the width and the image should stay centered left-to-right.

Related

How can we insert multiple titles on UInavigationBar in ios

Hi i am beginner in iOS and in my project i need to insert "titles" at "left side center" and "right side center" on UInavigationBar as like below image please help me how should i do below my requirement
See below code and try :
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect frame = [[UIScreen mainScreen] bounds];
UILabel *lbl1 = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, frame.size.width/2, 44)];
lbl1.backgroundColor = [UIColor redColor];
lbl1.textAlignment = NSTextAlignmentCenter;
lbl1.text = #"Dashboard";
[self.navigationController.navigationBar addSubview:lbl1];
UILabel *lbl2 = [[UILabel alloc] initWithFrame:CGRectMake(frame.size.width/2, 0, frame.size.width/2, 44)];
lbl2.backgroundColor = [UIColor redColor];
lbl2.textAlignment = NSTextAlignmentCenter;
lbl2.text = #"Profile";
[self.navigationController.navigationBar addSubview:lbl2];
}
You can customize the titleView of navigation bar. Read the official documentation here.
As per your question, I tried the below working code:-
-(UIView *)getTitleView
{
CGRect frame = [[UIScreen mainScreen] bounds];
UIView *viewTitle = [[UIView alloc]initWithFrame:CGRectMake(0, 0, frame.size.width, self.navigationController.navigationBar.frame.size.height)];
UILabel *lbl1 = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, frame.size.width/2, self.navigationController.navigationBar.frame.size.height)];
lbl1.backgroundColor = [UIColor colorWithRed:130/255.0f green:13/255.0f blue:23/255.0f alpha:1.0f];
lbl1.textAlignment = NSTextAlignmentCenter;
[lbl1 setTextColor:[UIColor whiteColor]];
lbl1.text = #"Dashboard";
[viewTitle addSubview:lbl1];
UILabel *lbl2 = [[UILabel alloc] initWithFrame:CGRectMake(frame.size.width/2, 0, frame.size.width/2, viewTitle.frame.size.height)];
lbl2.backgroundColor = [UIColor colorWithRed:130/255.0f green:13/255.0f blue:23/255.0f alpha:1.0f];
[lbl2 setTextColor:[UIColor whiteColor]];
lbl2.textAlignment = NSTextAlignmentCenter;
lbl2.text = #"Profile";
[viewTitle addSubview:lbl2];
return viewTitle;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.titleView = [self getTitleView];
}
I divide the code in separate method to follow modular approach. For any part of code, which is of separate task, write that piece of code in different method. This will lead to more readability.

Generated subview is always behind image view

viewController.m
-(void) viewDidLoad
{
[super viewDidLoad];
[self addScoreRowViewWithIndexLeft:(++i) andName:[scoreDict objectForKey:#"name"] andScore:[[scoreDict objectForKey:#"points"] integerValue]];
}
-(void) addScoreRowViewWithIndexLeft:(NSInteger)index andName: (NSString *)name andScore: (NSInteger)score {
UIView *scoreRowView = [[UIView alloc] initWithFrame:CGRectMake(128, 112 + index * 80, 280, 20)];
UILabel *indexLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, 20, 20)];
UILabel *nameLabel = [[UILabel alloc] initWithFrame:CGRectMake(150, 20, 180, 20)];
UILabel *scoreLabel = [[UILabel alloc] initWithFrame:CGRectMake(330, 20, 50, 20)];
UIColor *color = [UIColor darkGrayColor];
[indexLabel setText:[#((int)index) stringValue]];
[indexLabel setFont:[UIFont fontWithName:#"DINAlternate-Bold" size:18]];
[indexLabel setTextColor:color];
[nameLabel setText:name];
[nameLabel setFont:[UIFont fontWithName:#"DINAlternate-Bold" size:18]];
[nameLabel setTextColor:color];
[scoreLabel setText:[#((int)score) stringValue]];
[scoreLabel setFont:[UIFont fontWithName:#"DINAlternate-Bold" size:18]];
[scoreLabel setTextColor:color];
[scoreRowView addSubview:indexLabel];
[scoreRowView addSubview:nameLabel];
[scoreRowView addSubview:scoreLabel];
[self.view addSubview:scoreRowView];
}
I added my ImageView in my Storyboard as a subview of my View.
When I delete the ImageView, everything is ok. I get displayed my other code generated subviews. But when I add the ImageView in my Storyboard, it's on top of my other subviews. If I give my ImageView an alpha of 0.3 I can see my subviews shining through.
What's wrong with my code? I also tried;
[self.view bringSubviewToFront:scoreRowView];
but it doesn't work.
What can I do?
Try to change zPosition of your ImageView and scoreRowView. You can do this this way:
Connect your ImageView with your ViewController
In bottom of ViewDidLoad add something like that:
yourImageView.layer.zPosition = 1;
scoreRowView.layer.zPosition = 2;
I'm suspecting that [self.view bringSubviewToFront:scoreRowView]; doesn't work because you invoke it in ViewDidLoad where view in not fully work. You can try to invoke it in e.g. ViewDidAppear and check if that will work.

Avoid my section header to be redraw in viewForHeaderInSection

I have a UITableView with only 1 section title that contains labels when i reload data some of the label of the section may be hidden. But when I do reload data they are redraw in section I just wanted to know if there is some sort of dequeueReusableCellWithIdentifier: to avoid this like for the cell but for secions.
Here is the code
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.frame.size.width, 36)];
/* Create custom view to display section header... */
UILabel *labelSeq = [[UILabel alloc] initWithFrame:CGRectMake(10, 2, 30, 18)];
[labelSeq setFont:[UIFont boldSystemFontOfSize:12]];
labelSeq.text = #"SEQ";
UILabel *labelSup = [[UILabel alloc] initWithFrame:CGRectMake(50, 2, 330, 18)];
[labelSup setFont:[UIFont boldSystemFontOfSize:12]];
labelSup.text = #"SUPPLIER";
UILabel *labelMod = [[UILabel alloc] initWithFrame:CGRectMake(390, 2, 150, 18)];
[labelMod setFont:[UIFont boldSystemFontOfSize:12]];
labelMod.text = #"MODEL";
UILabel *labelFinish = [[UILabel alloc] initWithFrame:CGRectMake(550, 2, 150, 18)];
[labelFinish setFont:[UIFont boldSystemFontOfSize:12]];
labelFinish.text = #"FINISH";
UILabel *labelQty = [[UILabel alloc] initWithFrame:CGRectMake(710, 2, 30, 18)];
[labelQty setFont:[UIFont boldSystemFontOfSize:12]];
labelQty.text = #"QTY";
UILabel *labelSale = [[UILabel alloc] initWithFrame:CGRectMake(750, 2, 125, 18)];
[labelSale setFont:[UIFont boldSystemFontOfSize:12]];
labelSale.textAlignment = UITextAlignmentRight;
labelSale.text = #"SALE PRICE";
labelSale.tag = 100;
UILabel *labelCost = [[UILabel alloc] initWithFrame:CGRectMake(885, 2, 125, 18)];
[labelCost setFont:[UIFont boldSystemFontOfSize:12]];
labelCost.textAlignment = UITextAlignmentRight;
labelCost.text = #"COST";
labelCost.tag = 200;
UILabel *labelDesc = [[UILabel alloc] initWithFrame:CGRectMake(50, 17, 700, 18)];
[labelDesc setFont:[UIFont boldSystemFontOfSize:12]];
labelDesc.text = #"DESCRIPTION";
UILabel *labelUnit = [[UILabel alloc] initWithFrame:CGRectMake(750, 17, 125, 18)];
[labelUnit setFont:[UIFont boldSystemFontOfSize:12]];
labelUnit.textAlignment = UITextAlignmentRight;
labelUnit.text = #"UNIT PRICE";
labelUnit.tag = 300;
UILabel *labelProfit = [[UILabel alloc] initWithFrame:CGRectMake(885, 17, 125, 18)];
[labelProfit setFont:[UIFont boldSystemFontOfSize:12]];
labelProfit.textAlignment = UITextAlignmentRight;
labelProfit.text = #"PROFIT";
labelUnit.tag = 400;
[view addSubview:labelSeq];
[view addSubview:labelSup];
[view addSubview:labelMod];
[view addSubview:labelFinish];
[view addSubview:labelQty];
[view addSubview:labelSale];
[view addSubview:labelCost];
[view addSubview:labelDesc];
[view addSubview:labelUnit];
[view addSubview:labelProfit];
[view setBackgroundColor:[UIColor colorWithRed:0.0 green:122.0/255.0 blue:1.0 alpha:1.0]]; //your background color...
_headerView = view;
return view;
}
Add a property to your class to hold on to that UIView. Then in -(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section, just check to see if that property is nil or not. If it's nil, create it and set that property to it, otherwise just use the UIView saved in the property. If it requires updating it some, then you can do that at that point. It looks like all your content is static, so you should never need to update the view at all after the first time you create it.

Why is nothing displaying in my UIView?

I have following code that adds a UIView and then adds a UIImageView and UILabel, the UIView display correctly but nothing i have put in side the view is showing. I have looked everywhere but i cannot find an answer. The UIView is presented under certain conditions and when it is tapped it dissapears.
Here is my code.
UIView *actionView = [[UIView alloc] initWithFrame:CGRectMake(20, 180, 280, 165)];
UITapGestureRecognizer *singleFingerTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleSingleTap:)];
[actionView addGestureRecognizer:singleFingerTap];
actionView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.5f];
actionView.layer.cornerRadius = 5;
actionView.layer.masksToBounds = YES;
[self.view addSubview:actionView];
UILabel *actionText = [[UILabel alloc] initWithFrame:CGRectMake(20, 180, 280, 165)];
actionText.text = #"Hello";
actionText.textColor = [UIColor redColor];
actionText.textAlignment = NSTextAlignmentCenter;
[actionText setTextColor:[UIColor redColor]];
[actionText setBackgroundColor:[UIColor clearColor]];
[actionText setFont:[UIFont fontWithName: #"Trebuchet MS" size: 14.0f]];
actionText.Frame = CGRectMake(20, 180, 280, 165);
[actionView addSubview:actionText];
UIImage* image = [UIImage imageNamed:[NSString stringWithFormat:#"trash-icon.png"]];
UIImageView* blockView = [[UIImageView alloc] initWithImage:image];
blockView.frame = CGRectMake(109, 273, 40, 40);
[actionView addSubview:blockView];
Change your frame positions like..
UILabel *actionText = [[UILabel alloc] initWithFrame:CGRectMake(20, 10, 280, 40)];
actionText.text = #"Hello";
actionText.textColor = [UIColor redColor];
actionText.textAlignment = NSTextAlignmentCenter;
[actionText setTextColor:[UIColor redColor]];
[actionText setBackgroundColor:[UIColor clearColor]];
[actionText setFont:[UIFont fontWithName: #"Trebuchet MS" size: 14.0f]];
[actionView addSubview:actionText];
UIImage* image = [UIImage imageNamed:[NSString stringWithFormat:#"trash-icon.png"]];
UIImageView* blockView = [[UIImageView alloc] initWithImage:image];
blockView.frame = CGRectMake(109,70, 40, 40);
[actionView addSubview:blockView];
When you set the frame of a view, it is important to remember that the origin relates to the coordinate system of the superview it is added to.
So when you set the frame of your label to:
UILabel *actionText = [[UILabel alloc] initWithFrame:CGRectMake(20, 180, 280, 165)];
the origin of x = 20, y = 180 end up being the origin WITHIN the actionView. Now this is your problem because your actionView is only 165px tall, and you are telling the actionText subView that it's y origin is 180, which is well outside the bottom of the actionView.
for your actionText, you should allocate it as follows:
UILabel *actionText = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 280, 165)];
and for your blockView, something like:
blockView.frame = CGRectMake(89,93, 40, 40);

How to scroll the header along with the UITableView?

I have a UITableView with a header. the problem I currently have is that the header doesn't scroll with the table. I need it to scroll off screen (above) when the user scrolls the table view up. the tableview scrolls but the header is locked at the top of the UIView.
thanks
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
UIView *sectionHeader = [[UILabel alloc] initWithFrame:CGRectNull];
sectionHeader.backgroundColor = [UIColor whiteColor];
// add user profile image to _contentView
UIImageView *userImageView;
UIImage *userImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:userProfileImageUrl]]];
userImageView=[[UIImageView alloc]initWithImage:userImage];
userImageView.frame=CGRectMake(10,10,90,100);
[sectionHeader addSubview:userImageView];
// return userImageView;
// user name lable
CGRect userNameFrame = CGRectMake(110, 60, 100, 50 );
UILabel* userNameLabel = [[UILabel alloc] initWithFrame: userNameFrame];
[userNameLabel setText: firstName];
[userNameLabel setTextColor: [UIColor blackColor]];
[userNameLabel setBackgroundColor:[UIColor clearColor]];
[userNameLabel setFont:[UIFont fontWithName:#"DIN-Regular" size:14]];
[sectionHeader addSubview:userNameLabel];
// user last name label
CGRect userLastNameFrame = CGRectMake(110, 75, 100, 50 );
UILabel* userLastNameLabel = [[UILabel alloc] initWithFrame: userLastNameFrame];
[userLastNameLabel setText: lastName];
[userLastNameLabel setTextColor: [UIColor blackColor]];
[userLastNameLabel setBackgroundColor:[UIColor clearColor]];
[userLastNameLabel setFont:[UIFont fontWithName:#"DIN-Regular" size:14]];
[sectionHeader addSubview:userLastNameLabel];
// user checkin view
UIView *userCheckinView = [[UIView alloc] initWithFrame:CGRectMake(10, 120, 280, 25)];
userCheckinView.backgroundColor = customColorGrey;
[sectionHeader addSubview:userCheckinView];
// check in label
UILabel* userCheckInLabel = [[UILabel alloc] initWithFrame:CGRectMake(40, 2, 100, 20)];
[userCheckInLabel setText: #"CHECK-IN"];
userCheckInLabel.backgroundColor = customColorGrey;
userCheckInLabel.textColor = customColorIt;
[userCheckInLabel setFont:[UIFont fontWithName:#"DIN-Regular" size:12]];
[userCheckinView addSubview:userCheckInLabel];
// image
UIImageView *checkinImg = [[UIImageView alloc]
initWithImage:[UIImage imageNamed:#"classifica_geotag_C.png"]];
checkinImg.frame = CGRectMake(5, 0, 24, 24);
[userCheckinView addSubview:checkinImg];
// check in label
UILabel* userCheckInCountLabel = [[UILabel alloc] initWithFrame:CGRectMake(250, 2, 20, 20)];
[userCheckInCountLabel setText: [checkinCount stringValue]];
userCheckInCountLabel.backgroundColor = customColorGrey;
userCheckInCountLabel.textColor = customColorIt;
[userCheckInCountLabel setFont:[UIFont fontWithName:#"DIN-Regular" size:12]];
[userCheckinView addSubview:userCheckInCountLabel];
// user like view
UIView *userLikeView = [[UIView alloc] initWithFrame:CGRectMake(10, 150, 280, 25)];
userLikeView.backgroundColor = customColorGrey;
[sectionHeader addSubview:userLikeView];
// like label
UILabel* userLikeLabel = [[UILabel alloc] initWithFrame:CGRectMake(40, 2, 100, 20)];
[userLikeLabel setText: #"LIKE"];
userLikeLabel.backgroundColor = customColorGrey;
userLikeLabel.textColor = customColorIt;
[userLikeLabel setFont:[UIFont fontWithName:#"DIN-Regular" size:12]];
[userLikeView addSubview:userLikeLabel];
// image
UIImageView *likeImg = [[UIImageView alloc]
initWithImage:[UIImage imageNamed:#"classifica_like_C.png"]];
likeImg.frame = CGRectMake(5, 0, 24, 24);
[userLikeView addSubview:likeImg];
// user like label
UILabel* userLikeCountLabel = [[UILabel alloc] initWithFrame:CGRectMake(250, 2, 20, 20)];
[userLikeCountLabel setText: [likesCount stringValue]];
userLikeCountLabel.backgroundColor = customColorGrey;
userLikeCountLabel.textColor = customColorIt;
[userLikeCountLabel setFont:[UIFont fontWithName:#"DIN-Regular" size:12]];
[userLikeView addSubview:userLikeCountLabel];
// la mia bacheca like view
userLaMiaView = [[UIView alloc] initWithFrame:CGRectMake(10, 180, 300, 25)];
userLaMiaView.backgroundColor = [UIColor clearColor];
[sectionHeader addSubview:userLaMiaView];
// like label
UILabel* userLaMiaLabel = [[UILabel alloc] initWithFrame:CGRectMake(5, 0, 150, 20)];
[userLaMiaLabel setText:NSLocalizedString(#"LA MIA BACHECA", nil)];
userLaMiaLabel.backgroundColor = [UIColor clearColor];
userLaMiaLabel.textColor = customColorGrey;
[userLaMiaLabel setFont:[UIFont fontWithName:#"DIN-Bold" size:10]];
[userLaMiaView addSubview:userLaMiaLabel];
// grey line view below la mia label
userGreyLineView = [[UIView alloc] initWithFrame:CGRectMake(10, 248, 280, 1.5)];
userGreyLineView.backgroundColor = [UIColor whiteColor];
[sectionHeader addSubview:userGreyLineView];
return sectionHeader;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 210;
}
That behavior is only common when the UITableViewStyle property of the table is set to UITableViewStylePlain. If you have it set to UITableViewStyleGrouped, the headers will scroll up with the cells.
This answer is taken from this question.
This solution works regardless of the number of headers.
create sectionHeader view in a new method and then add to the end:
self.tableView.tableHeaderView = sectionHeader;
if you have dynamic header view or single view select table style
Changing the UITableViewStyle from Plain to Grouped make the section header to scroll with the other cells.
If you write tableView.tableHeaderView = sectionHeader you will lose the actual table view header.
If you want to have table view header along with section headers you have to set UITableViewStyle property to UITableViewStyleGrouped.
Also if you want to calculate section header height automatically you can return UITableViewAutomaticDimension in heightForHeaderInSection method like this:
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
return UITableViewAutomaticDimension;
}
If you have a single header in the table then you can use tableHeaderView as below:
tableView.tableHeaderView = Header;
Or if you have multiple header in table than you need to use Group table instead of plain table.
Thanks

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