So I created a custom UINavigationItem category to be able to make a custom titleview for my navbar, but everytime I push/pop a view, it simply adds the new title without getting rid of the old one causing the title to just be a jumble of letters. Here's the relevant code:
#implementation UINavigationItem (CustomNavigationItem)
-(UIView *)titleView
{
[self setTitleView:nil];
UILabel *newTitleView = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 220, 32)];
newTitleView.center = CGPointMake(160, 22);
newTitleView.backgroundColor = [UIColor clearColor];
newTitleView.textColor = [UIColor whiteColor];
newTitleView.textAlignment = UITextAlignmentCenter;
newTitleView.text = self.title;
newTitleView.textAlignment = UITextAlignmentCenter;
return newTitleView;
}
#end
You have to remove the old uilabel from its superview, by setting to nil it doesn't do that. That's why you are messing the letters on screen. I also do not think you are getting a recursion, because you are caling the setter, but I maybe wrong.
A quick thing you could is to assign a tag to your newest created view.
[[self.view viewWithTag:YourCustomEnumTag] removeFromSuperView];
// create your view....
textView.tag=YourEnumCustomTag;
Related
I'm trying to add UISearchBar (fixed position!) on top of the UITableView.
CGRect rect = self.headerView.frame;
CGRect newRect = CGRectMake(0,
rect.origin.y + rect.size.height,
rect.size.width,
CZP_SEARCHBAR_HEIGHT);
UIView *view = [[UIView alloc] initWithFrame:newRect];
view.backgroundColor = [UIColor whiteColor];
Result (i got a white rect on position where i want my bar):
But if i want to add subview to my view, searchbar appear on 1st cell of tableview (below my view!)
[view addSubview:searchBar];
Here's one way to do it. It looks like you're trying to do it in code instead of a storyboard, so this is a code example. It also looks like you're doing it in a popover of sorts, I put together a quick project as an example that uses a popover, it doesn't look exactly like yours, but it's close enough to get you where you're trying to go I think.
First, here's the code sample, this is from the view controller that contains the header, search bar and tableview.
- (void)viewDidLoad
{
[super viewDidLoad];
// get the desired size for this popover and setup our header height
CGSize viewSize = self.preferredContentSize; // could also be self.view.bounds.size depending on where you're using it
CGFloat headerHeight = 44.0;
// setup our desired frames
CGRect headerFrame = CGRectMake(0, 0, viewSize.width, headerHeight);
CGRect searchContainerFrame = CGRectMake(0, headerHeight, viewSize.width, headerHeight);
// for this frame I'm simply centering it, there's better ways to do it but this is an example
CGRect searchBarFrame = CGRectMake(5, 5, searchContainerFrame.size.width - 10, searchContainerFrame.size.height - 10);
// set our tableview frame to be positioned below our header and search container frame
CGRect tableviewFrame = CGRectMake(0, headerHeight *2, viewSize.width, viewSize.height - (headerHeight * 2));
// create our header view and set it's background color
UIView *headerView = [[UIView alloc] initWithFrame:headerFrame];
headerView.backgroundColor = [UIColor orangeColor];
// create our container view to hold the search bar (not needed really, but if you want it contained in a view here's how)
UIView *searchContainer = [[UIView alloc] initWithFrame:searchContainerFrame];
searchContainer.backgroundColor = [UIColor greenColor];
// instantiate our search bar
UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:searchBarFrame];
// add the search bar to the container view
[searchContainer addSubview:searchBar];
// create our tableview and position it below our header and search containers
UITableView *tableview = [[UITableView alloc] initWithFrame:tableviewFrame];
tableview.backgroundColor = [UIColor blueColor];
[self.view addSubview:headerView];
[self.view addSubview:searchContainer];
[self.view addSubview:tableview];
}
That snippet gives me a popover with an orange header, a green/grey search bar and a tableview beneath it.
EDIT: If you're interested in looking through the project file that I used to put this together you can download it off github here
I am currently building a Profile Object that can return a view with all the information of the user. I want to be able to reuse the code in many different places so I am trying to build it in an NSObject but when I add it as a subview of my view, I cannot click the buttons. The buttons are created with a rectangle and then have a UILabel put on top of them. If I copy the cody where I am trying to put it, it works. I also tried creating a delegate but that did nothing either.
EDIT
UIView *profile = [[UIView alloc] initWithFrame:CGRectMake(10.0, 0.0, 300.0, 175.0)];
UIView *votesView = [[UIView alloc] initWithFrame:CGRectMake(60.0, 125.0, 60.0, 50.0)];
UILabel *votesLabel = [[UILabel alloc] initWithFrame:CGRectMake(5.0, 0.0, 50.0, 40.0)];
votesView.backgroundColor = [UIColor lightGrayColor];
votesLabel.text = votes;
votesLabel.textAlignment = UITextAlignmentCenter;
votesLabel.backgroundColor = [UIColor clearColor];
votesLabel.tag = 2;
[votesView addSubview:votesLabel];
[profile addSubview:votesView];
Why are you subclassing an NSObject, you can subclass an UIView and implement all your views that are to be included,
Also, I am not able to see how you are adding a button, I can see just labels in your code.
But would suggest that you need to mention action and target, where for target you can add your class where it is called
[btn addTarget:<class where you will add UIView returned by your class> action:<SEL in your class where you will add UIView> forControlEvents:<UIControlEvents>]
the problem I've met today is with my subclass of UIPageControl. When I initialize it, the frame (specifically the origin) and image of dots stays default, which is the problem, since I want it to change right after initialization. However, when I move with scrollView (as in "touch and move") after initialization, they (the dots) somehow jump to the right position with correct images.
What could be the problem?
Code:
CustomPageControl.m
- (id) initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
activeImage = [UIImage imageNamed:#"doton.png"];
inactiveImage = [UIImage imageNamed:#"dotoff.png"];
return self;
}
- (void) updateDots
{
for (int i = 0; i < [self.subviews count]; i++)
{
UIImageView *dot = [self.subviews objectAtIndex:i];
if (i == self.currentPage) dot.image = activeImage;
else dot.image = inactiveImage;
[dot setFrame:CGRectMake(i * 13.5, 1.5, 17, 17)];
}
}
- (void)setCurrentPage:(NSInteger)currentPage
{
[super setCurrentPage:currentPage];
[self updateDots];
}
#end
ChoosingView.m - init part
scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 160, 300)];
[scrollView setBackgroundColor:[UIColor clearColor]];
[scrollView setDelaysContentTouches:NO];
[scrollView setCanCancelContentTouches:YES];
[scrollView setClipsToBounds:NO];
[scrollView setScrollEnabled:YES];
[scrollView setPagingEnabled:YES];
[scrollView setShowsHorizontalScrollIndicator:NO];
[scrollView setShowsVerticalScrollIndicator:NO];
pageControl = [[CustomPageControl alloc] initWithFrame:CGRectMake(200, 300, 80, 20)];
[pageControl setBackgroundColor:[UIColor clearColor]];
pageControl.numberOfPages = 6;
[pageControl setCurrentPage:0];
the last line is when I would expect the UIPageControl to refresh, however that does not happen.
Does this happen with the standard UIPageControl implementation?
Your problem states that your objects subViews (eg the UIImageViews) rects/size are not initialising to your desired size/position.
I implemented this code in my project with a nib rather than programmatically and I needed to call -(void)updateDots to set it as its initial condition was the standard dots..
I dont see how the UIScrollView has any bearing impact on this unless somehow its linked to your -(void)updateDots function (E.g. your setting the currentIndex of your custom page control). You state, "However, when I move with scrollView (as in "touch and move") after initialization, they (the dots) somehow jump to the right position with correct images."
Because they "jump to the right position with correct images" it means that your -(void)updateDots function must be getting called. I dont see any other explanation.
Also your iteration loop assumes that all the UIViews in your .subViews array are UIImageViews, although fairly safe to assume this, I would check to see if the UIView is a UIImageView with reflection.
I have this odd semicircle being drawn at the top left of each cell in this Table View. I can't seem to be able to get rid of it. I'm not doing any custom drawing in my cells, although the cells are all subclasses of UITableViewCell.
The curved artifact appears only in the first cell in each section, and is still persistent regardless of the table view background.
This is all the custom code in the cell, the rest is in IB
- (void)layoutSubviews {
// NSLog(#"DataEntryCell layoutSubviews");
UILabel *topLabel = [self parameterLabel];
UILabel *bottomLabel = [self dataLabel];
topLabel.font = [UIFont boldSystemFontOfSize:18.0];
topLabel.textAlignment = UITextAlignmentCenter;
topLabel.textColor = [UIColor darkGrayColor];
topLabel.shadowColor = [UIColor lightGrayColor];
topLabel.shadowOffset = CGSizeMake(0.0, 1.0);
bottomLabel.font = [UIFont systemFontOfSize:16.0];
bottomLabel.textAlignment = UITextAlignmentLeft;
bottomLabel.textColor = [UIColor darkGrayColor];
bottomLabel.numberOfLines = 0;
bottomLabel.lineBreakMode = UILineBreakModeWordWrap;
self.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
self.selectionStyle = UITableViewCellSelectionStyleGray;
self.autoresizesSubviews = YES;
}
Any idea what could causing this?
Thanks
I don't see anything in that layoutSubviews that really belongs there. All of those properties on the labels should be set when the labels are created. Ditto for the properties on self. The selectionStyle in particular seems suspicious since it mentions gray and you have a stray gray line. By the time layoutSubviews is called, it's too late to set autoresizesSubviews; autoresizing happens before you receive layoutSubviews.
Try putting that stuff closer to the cell's initialization - in awakeFromNib if you're loading the cell (and its subviews) from a nib, or with the code that creates and adds the subviews.
I have the following code that creates a UIView that I assign to my UITableViewCell's selectedBackgroundView property. Everything works as expected, with the exception of the subview's background, which is transparent.
I use the same code to create a custom view that I assign to backgroundView, and that works fine.
What is causing that subview to be transparent for selectedBackgroundView, and how can I avoid that?
- (UIView*) makeSelectedBackgroundView
{
// dimensions only for relative layout
CGRect containerFrame = CGRectMake(0, 0, 320, 40);
UIView* containerView = [[UIView alloc] initWithFrame:containerFrame];
containerView.autoresizesSubviews = YES;
// dimensions only for relative layout
CGRect subframe = CGRectMake(5, 5, 310, 30);
UIView* subview = [[UIView alloc] initWithFrame:subframe];
subview.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
subview.backgroundColor = [UIColor redColor];
subview.layer.cornerRadius = 5;
subview.layer.borderWidth = 2;
subview.layer.borderColor = [UIColor greenColor].CGColor;
[containerView addSubview:subview];
return containerView;
}
As we can see from name of ivar selectedBackgroundView, this background shown by cell when it was selected.
I've to reload few methods (– setSelected:animated: and – setHighlighted:animated:) of UITableViewCell subclass to reset background color of subviews back to their values. Look's like UIKit do some magic in this template methods (iterating over all UIView subclasses and set their background to clearColor)
This code might be helpful for you:
UIImageView *cellImageView = [[UIImageView alloc]
initWithFrame:CGRectMake(0,
0,
cell.frame.size.width,
cell.frame.size.height
)];
cellImageView.contentMode = UIViewContentModeScaleAspectFit;
// normal background view
[cellImageView setImage:[UIImage imageNamed:#"*<ImageName>*"]];
[cell addSubview:cellImageView];
[cell sendSubviewToBack:cellImageView];
[cellImageView release], cellImageView = nil;
Here cell is an object of custom UITableViewCell.
Also you can set backgroundColor property.
I would try to set the alpha for both containerView and subView to 1.0
[containerView setAlpha:1.0];
...
[subview setAlpha:1.0];
this should make your controls totally opaque.
You could also create some images for the background and use that images in state of creating 2 views. Let's say you create 2 image (normalBackground.png and selectedBackground.png) and then set this images as cell background. Here is a nice tutorial.
Try setOpaque:YES on your views.
In the end, I ended up subclassing UITableViewCell which contained a custom view object, and that worked.