Here I have created Navigation bar with height 50 and width as view size.Now, I want to add a subview in the navigation bar with same navigation bar size.How to set the frame size for subview?
ViewController.m
-(void)ViewDidLoad
{
UINavigationBar *navbar = [[UINavigationBar alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 50)];
[self.view addSubview:navbar];
}
Firstly, your code won't respond to the orientation changes (portrait / landscape handling) nor support split screen. To fix it, instead of setting frame in viewDidLoad (where btw you do not call super!) write:
- (void)viewWillLayoutSubviews {
[super viewWillLayoutSubviews];
[self.navBar setFrame:CGRectMake(0, 0, self.view.frame.size.width, 50)];
}
Then as it is a different view, you should create a subclass of your view. The code will work in a way as #raghu wrote, but it won't be easily maintanable and will be of low quality. Separate of concerns!
Inside your UIView subclass you should implement init methods and layoutSubviews where you should set a proper frame.
Related
When I swipe and hide the navigation bar with the hidesBarsOnSwipe property the status bar has a clear background. How can I set the background of the status bar to the same color as the navigation bar? Here are a few pictures showing my problem, this is all contained in a UITableViewController.
Separate
Separate picture, looks like one big one.
I've come across the same issue, and was able to solve it. I'm fairly new to iOS dev, and I don't imagine this solution to be foolproof. I couldn't find any good answers elsewhere, so here's how I overcame it:
I converted from a UITableViewController over to UIViewController with a nested UITableView. Note, double check that the delegate to the child tableview is set to the UIViewController.
I Added a view with a height of 20px and a background colour that you want to set as the "background" to the status bar. Set the constraints on that view as follows:
On your table view, set the constrains to be basically full screen. One important note here, the top constraint is to "Top Layout Guide.Top" and not to "Top Layout Guide.Bottom". By default I believe this constraint ties to the bottom. Double clicking on the constraint allows you to adjust it to the top. Without this, any table header cells weren't positioned properly for me
Hope that helps.
Adding to George Huber's answer. I solved this issue programmatically by adding a 20pt height UIView as a subview of the navigationController's view property -- in viewDidLoad method.
- (void)viewDidLoad
{
[super viewDidLoad];
UIView *statusBarBG = [[UIView alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.view.bounds), 20)];
statusBarBG.backgroundColor = [UIColor navBar];
[self.navigationController.view addSubview:statusBarBG];
// REST OF CODE
}
Per skg's answer, I add a relative height for status bar according to iOS version.
self.navigationController.hidesBarsOnSwipe = true;
// add a UIView as subView to navigationController
CGFloat statusBarHeight;
if (#available(iOS 13, *)) {
NSArray *windows = UIApplication.sharedApplication.windows;
UIWindow *keyWindow = nil;
for (UIWindow *window in windows) {
if (window.isKeyWindow) {
keyWindow = window;
break;
}
}
statusBarHeight = keyWindow.windowScene.statusBarManager.statusBarFrame.size.height;
NSLog(#"statusBarHeight: %f", statusBarHeight);
} else {
statusBarHeight = UIApplication.sharedApplication.statusBarFrame.size.height;
}
UIView *statusBarBG = [[UIView alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.view.bounds), statusBarHeight)];
statusBarBG.backgroundColor = [UIColor systemBackgroundColor];
[self.navigationController.view addSubview:statusBarBG];
I would like to display a small UIView with some text in the center of a UITableViewController when I call the showHud method.
- (void) showHud {
UIView *paintView=[[UIView alloc]initWithFrame:CGRectMake(150, 150, 120, 30)];
[paintView setBackgroundColor:[UIColor yellowColor]];
[self.view addSubview:paintView];
}
Actually the problem with this code is that the view doesn't stays on its place, when I scroll the tableview it goes up with cells. Is it possible to pin it somehow?
I don't think you can achieve that with a UITableViewController because the view property of such controller is a UITableView, so the content will always scroll with it.
You need to create a regular UIViewController and add a UITableView to that controller's main view. Then anything else you add to that main view, will stay in place as it is outside of the table view.
Try implementing scrollViewDidScroll delegate method and change the frame of paintView according to tableview offset.
eg:
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
CGPoint offset = scrollView.contentOffset
[paintView setFrame:CGRectMake(150, 150+offset.y, 120, 30)];
}
But the best way would be to create a simple UIViewController.
You must use UItableViewController because of pullToRefresh controller?
UI could add a view to the window and position it to the very front:
UIView testView = [[UIIView alloc]initWithFrame:CGRectMake(10, [[UIScreen mainScreen]applicationFrame].size.height - 85 , 75, 75)]; [[[[[NSApplication sharedApplication] mainWindow] contentView] addSubview:testbox]; addSubview: testView]; testView.layer.zPosition = MAXFLOAT;
An UITableViewController is typically embedded in a "parent" view controller, like UINavigationController. Its UITableView will then have a superview, like UINavigationControllerWrapperView. Even if your table view controller is a root view controller, the table view's superview is UIWindow.
So you can safely assume that your table view always has a superview. Then add your UIView to this superview instead of the table itself:
//Note: frame should be different here as it's in the superview's coordinate system
UIView *paintView=[[UIView alloc]initWithFrame:CGRectMake(150, 150, 120, 30)];
[paintView setBackgroundColor:[UIColor yellowColor]];
[self.view.superview addSubview:paintView];
How can I programatically add a navbar to a UITableViewController and offset the actual table view to where it starts right where the navbar ends. This is what i've done so far:
- (void)viewDidLoad
{
[super viewDidLoad];
UINavigationBar *myBar = [[UINavigationBar alloc]initWithFrame:CGRectMake(0, 0, 320, 60)];
[self.view addSubview:myBar];
[self.tableView setContentInset:UIEdgeInsetsMake(60, 0, 0, 0)];
}
but this is the result:
The reason I cannot just simply imbed a navigation controller is because im using this UITableViewController as a UIView for a childviewcontroller. Im doing this to get a paged UIScrollView much like snapchat. Whenever I try to just embed the navigation controller into this UITableViewController it doesnt show up during simulation.
For any further details on what Im trying to accomplish You can check out https://github.com/wannabegeek/PageViewController since that is the project im getting this off of.
Thanks!
I've got a UINavigationController with a UIViewController showing a navigation bar.
I've specifically set [self setAutomaticallyAdjustsScrollViewInsets:YES];, though this should be YES by default anyway.
I add a UIScrollView:
self.scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:self.scrollView];
However, the UIScrollView's contentInset is {0, 0, 0, 0}, so I am wondering why it doesn't inherit the content inset from the view controller as the documentation states it would.
If I add subviews to the scroll view and set their Y to be self.scrollView.contentInset.top they don't appear below the navigation bar, which is what I am expected.
What am I doing wrong here? It works fine if you start out with a UITableViewController since it correctly inherits the contentInset from the view controller.
Thanks!
self.view = self.scrollView;
Works fine for me.
Tested with UIWebview:
- (void)viewDidLoad
{
[super viewDidLoad];
self.view = self.webView;
}
It adjusts the scroll view bounds, not the content insets.
I have a subview in my navigation bar. I try to add it by this way:
UIView *customView =
[[UIView alloc] initWithFrame:
CGRectMake(0, 0, image.size.width + label.frame.size.width, 44)];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
[customView addSubview:imageView];
[customView addSubview:label];
[self.navigationController.navigationBar addSubview:customView];
However, when I try to push the navigation bar, the customView stays in the place, not animating following the sliding navigation bar. How can I achieve the animated subview? Is it even possible? Thanks!
you should not add subview in that way
you have tospecify your view location in the left , right or title view
self.navigationItem.titleView = YOURVIEW;
or choose another location left or right items in this way the the title view will added to the current view if you want to remove it just set it to nil in the place you want and reload it subviews again,
self.navigationItem.titleView = nil;
As you are using
[self.navigationController.navigationBar addSubview:customView];
that means the navigation bar you have create is in App delegate and is common for all the viewControllers in your project,that is why once you add a view on to it you see it on every view you have. Remove your sub-view in
-(void)viewWillDisappear:(BOOL)animated{
[Your subview remove fromSuperView];
[super viewWillDisappear:YES];
}
and add that subview in
-(void)viewWillAppear:(BOOL)animated{
[self.navigationController.navigationBar addSubview:Your subview];
[super viewWillAppear:YES];
}
this will add the subview in that particular view only and remove it as soon as that view is popped or pushed.The code given is not correct to the syntax please give a check on that.