I have a requirement to display number of pending notifications in iPhone navigation bar. The appearance should be like that of notification badge - but these are not APNS notifications. They are the ones sent from private server with similar purpose.
I tried adding a right/left button (UIBarButtonItem) in my UINavigationbar but it seems like it is very rigid in appearance. I can't set its width, fonts etc. See my code:
self.notifButton = [[UIBarButtonItem alloc] initWithTitle:#"0" style:
UIBarButtonItemStyleBordered target:self action:#selector(TouchNotif)];
NSMutableArray *items = [[NSMutableArray alloc] init];
[items addObject:self.notifButton];
self.navigationItem.rightBarButtonItems = items;
Because of other 2 items also added to items array, navbar is cluttered. Their fonts, width etc I cannot play with, or maybe I don't know how should I create them.
My questions:
1) What is proper way to accommodate at least 3 items in navbar right area? I am asking this because I don't find a way to play with width and font of the UIButtons I use.
2) If I want to have custom appearance for my notification button (just like notification badge) - are there any pointers how do I make it? Which control to use, how to set its frame and font which will be allowed within UINavigationBar?
Please help.
You need to create a UIBarButtonItem that contains a custom view using initWithCustomView.
The custom view could be a custom UIButton with a number badge as subview. With this custom view you can also control the width of the buttons.
There is no public API to create a notification badge directly. In case of a tab bar item you could set a badge using the property badgeValue - but not with UIBarButtonItem.
Here you need to use this open source control: MKNumberBadgeView.
Note that the property rightBarButtonItems is available since iOS 5.
If you only need one item set the rightBarButtonItem instead.
UIButton * buttton = [UIButton buttonWithType:UIButtonTypeCustom];
[buttton setFrame:CGRectMake(285, 20, 20, 20)];
[buttton.layer setCornerRadius:10];
[buttton setTitle:#"23" forState:UIControlStateNormal];
[buttton.titleLabel setFont:[UIFont systemFontOfSize:12]];
[buttton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[buttton setBackgroundColor:[UIColor whiteColor]];
[self.navigationController.view addSubview:buttton];
First get the respective barbuttonitem in navigationController by
let baritem = navigationItem.right/leftBarButtonItem
baritem.badgeValue = "\(correspondingValues)"
Related
I'm working on customizing the appearance of navigation controllers in my app to look like the following:
As I've discovered after a few hours of SO research, there are a ton of different ways of doing it, some really hackish, some much less so. I'm interested in finding out the Apple-blessed / most elegant way of achieving this that will lead to the least amount of pain down the road as the app grows. Some approaches I've looked into so far:
1) I changed the background / height of the navigation bar by applying an image through [UINavigationBar appearance], seems to have worked fine.
UIImage *navBarImage = [UIImage imageNamed:#"navigation-bar.png"];
[[UINavigationBar appearance] setBackgroundImage:navBarImage
forBarMetrics:UIBarMetricsDefault];
Seems like the most "modern" way of achieving background/height change, although it most likely doesn't survive an orientation change. Any improvements that could be made here?
2) I replaced the default back button with the following in the viewDidLoad of the pushed view
// Set the custom back button
UIImage *buttonImage = [UIImage imageNamed:#"back.png"];
//create the button and assign the image
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:buttonImage forState:UIControlStateNormal];
//set the frame of the button to the size of the image (see note below)
button.frame = CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height);
[button addTarget:self action:#selector(back) forControlEvents:UIControlEventTouchUpInside];
// offset the back button
button.contentEdgeInsets = UIEdgeInsetsMake(10, 5, -10, -5);
//create a UIBarButtonItem with the button as a custom view
UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
self.navigationItem.leftBarButtonItem = customBarItem;
I'm not very pleased with this solution because it leaves customization of the bar to the controller on top of the navigation stack. From the Apple docs it would seem like they'd prefer you to subclass the UINavigationBar altogether and replace it once and for all in the navigation controller:
You can also specify a custom UINavigationBar subclass by using the initWithNavigationBarClass:toolbarClass: method to initialize the navigation controller.
Would that be the advised route? I was NOT able to replace the default Back button of the UINavigationBar through [UIBarButtonItem appearance] as it still attempts to display text in the button, and when you remove the text, the button isn't displayed at all. Suggestions?
3) The page title should be replaceable with another view through navigationItem.titleView. Anything better out there?
Thanks!
1) You should set two images, for two UIBarMetrics (UIBarMetricsDefault and a separate image for UIBarMetricsLandscapePhone). Thus
UIImage *navBarImage = [UIImage imageNamed:#"navigation-bar.png"];
UIImage *navBarImage_Landscape = [UIImage imageNamed:#"navigation-bar-landscape.png"];
[[UINavigationBar appearance] setBackgroundImage:navBarImage
forBarMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setBackgroundImage:navBarImage_Landscape
forBarMetrics:UIBarMetricsLandscapePhone];
2) You could either subclass UINavigationBar (as you've also mentioned and that would be the default Apple way). Or if it's just the button, maybe you could hack its behaviour by passing in " " (empty text)
3) Not sure what you meant. You could setTitle of the navigation bar and it would show whatever title you want. Or you should be able to plug in another view for titleView
Note that setBackgroundImage is iOS 5.0 and later.
I added the info button to the navigation bar using below code:
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
[infoButton addTarget:self action:#selector(showImage:)
forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:infoButton];
Now i want to hide this button at some part of the code based on some conditions. But i didn't find any hide property for right bar button item in the navigation bar?
For making hidden, try with assigning nil to your rightBarButtonItem like below.
self.navigationItem.rightBarButtonItem = nil ;
Best option is to use buttonItem.enabled = NO to indicate the functionality isn't available at the moment. That should, in most cases, be the right behavior.
However if you intend to make it disappear, the best way would be to store a reference to the bar button. Set the rightBarButtonItem to nil when you want it to disappear and set it to the stored reference when you want it to be displayed.
If you have multiple UIBarButtonItems and you just want to remove one, you can do this:
NSMutableArray *barButtonItems = [self.toobbar.items mutableCopy];
[barButtonItems removeObject:self.buttonToRemove];
[self.toolbar setItems:[barButtonItems copy] animated:NO];
If you just want to 'hide' it visually:
Swift 3:
self.navigationItem.rightBarButtonItem?.tintColor = UIColor.clear
self.navigationItem.rightBarButtonItem?.isEnabled = false
How do I get a UISegmentedControl that is like the one in the Mail App, so that it is the same colour as UIToolbar buttons (as if both segments were in the selected state).
I want to use the segmented control for exactly the same purpose as Mail.
(on the iPad, so a grey not blue color)
This is code from Apple Sample codes... NavBar and both the images used in the code..
you shoud be able to get exact same view as mail App.
// "Segmented" control to the right
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:
[NSArray arrayWithObjects:
[UIImage imageNamed:#"up.png"],
[UIImage imageNamed:#"down.png"],
nil]];
[segmentedControl addTarget:self action:#selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
segmentedControl.frame = CGRectMake(0, 0, 90, 30);
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.momentary = YES;
defaultTintColor = [segmentedControl.tintColor retain]; // keep track of this for later
UIBarButtonItem *segmentBarItem = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];
[segmentedControl release];
self.navigationItem.rightBarButtonItem = segmentBarItem;
[segmentBarItem release];
You seek the tintColor property!
When you use a UISegmentedControl you can change its tint color to any color you can dream up. So, if you added the UISegmentedControl in Interface Builder then you would style it in your - (void)viewWillAppear:(BOOL)animated method as such (assuming you had it hooked up to a #synthesized ivar:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
// Set the tintColor to match the navigation bar
self.mySegmentedControl.tintColor = [UIColor colorWithRed:.94 green:.94 blue:.94 alpha:1];
... do whatever else in your viewWillAppear ...
}
Now obviously you will want to play with the red, green, blue, and alpha's that I've put in the sample code above, but you can literally tint the UISegmentedController any color you would like (or make it as transparent as you would like), so it's just a matter of finding the RGBA values that look perfect to you.
Remember that per Apple's docs that the default value of this property is nil (no color). UISegmentedControl uses this property only if the style of the segmented control is UISegmentedControlStyleBar.
Good luck!
I dont know exactly what you mean.. but i believe the "UISegmentedControlStyleBar" as segmentedControlStyle could it be.
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar
You can set this property in the IB too! (It's the property called "style")
The style I'm looking for is undocumented: it is style 4.
It looks like he up/down control here: http://media.mobilemeandering.com/wp-content/uploads/2010/04/ipad-mail-message-2.png
(not my image btw)
It basically makes all segments look selected, it's intended for momentary pushes, and is effectively multiple tool bar buttons pushed up together.
So it can't be set in IB but must be set in code or manually in the nib/xib file, by opening the nib as a text file.
I'm not sure I exactly understand what you're trying to do, but I'll give it a shot.
The solution is not obvious, you need to use a UISearchDisplayController in order to get a matching UISearchBar and UISegmentedControl.
See the TableSearch sample code for an example.
I am tearing my hair out on this one. My client wants to add a button to the left of a search bar like the example below:
(source: erik.co.uk)
But I just can't figure out how to do it. Apple don't seem to provide any documented method for adding custom buttons to a UISearchBar, let alone to the left of the search bar.
I've tried hacking around in Interface Builder adding a UIToolbar with a button in it to the left but I cannot find any combination of styles where the two line up properly to give the impression that they are one. There is always what looks like one pixel difference in the vertical alignment as you can see from the picture below:
(source: erik.co.uk)
I've searched around and just can't find the answer, but as we can see from the screenshot it must be possible!
Thank you in advance for your help.
Erik
Use a navigation bar instead of a toolbar. Set the search bar to the navigation bar's title view.
In Interface Builder:
Result:
You can replace the Bookmark image instead, and adjust its offset if necessary.
For example:
[self.searchDisplayController.searchBar setImage:[UIImage imageNamed:#"plus2"] forSearchBarIcon:UISearchBarIconBookmark state:UIControlStateNormal];
[self.searchDisplayController.searchBar setPositionAdjustment:UIOffsetMake(-10, 0) forSearchBarIcon:UISearchBarIconBookmark];
Handle the button event in the delegate method:
- (void)searchBarBookmarkButtonClicked:(UISearchBar *)searchBar
This is how it looks:
The first solution is to use UINavigationBar instead of UIToolbar, as KennyTM noticed. But you may not be satisfied with Navigation bar, like in my case, when I need to use 3 buttons (Navigation bar is allow to use only 2 buttons) - see the left picture. This is how I did it:
Use Toolbar with 3 buttons and Flexible Space Bar Button Item in the place where search bar should be placed.
Put search bar on (not in) the toolbar. To do so in Interface Builder, do not drag & drop the search bar on the toolbar. Instead, put it somewhere nearby and then move it to place using the arrow keys on the keyboard (or by changing X & Y position in Interface Builder).
Search bar left black line under it (see the right picture). To hide it I put one additional view with the height 1px and a white background over it.
It looks a bit dirty for me, so if you have a better solution, let me know.
The easiest solution is to add your SearchBar in TOP of your Toolbar, (not in), I give you the best solution I use in my company eBuildy:
UIBarButtonItem *mySettingsButton = [[UIBarButtonItem alloc] initWithTitle:#"Settings" style:UIBarButtonItemStyleBordered target:self action:#selector(refresh)];
UIBarButtonItem *mySpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *myRefreshButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:#selector(refresh)];
UIToolbar *myTopToolbar = [[UIToolbar alloc]initWithFrame:CGRectMake(0,0,320,40)];
UISearchBar *mySearchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(70,1,220,40)];
[myTopToolbar setItems:[NSArray arrayWithObjects:mySettingsButton,mySpacer,myRefreshButton, nil] animated:NO];
[self.view addSubview:myTopToolbar];
[self.view addSubview:mySearchBar];
answering an old question here but i was struggling with this one myself recently and found some shortcomings with the other answers for the situation i was trying to address. here's what i did in a subclass of UISearchBar:
first add a UIButton property (here "selectButton"). then override the initWithFrame method and do something similar to the following:
-(id)initWithFrame:(CGRect)frame{
if (self = [super initWithFrame:frame])
{
self.selectButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
self.selectButton.contentEdgeInsets = (UIEdgeInsets){.left=4,.right=4};
[self.selectButton addTarget:self action:#selector(pressedButton:) forControlEvents:UIControlEventTouchUpInside];
self.selectButton.titleLabel.numberOfLines = 1;
self.selectButton.titleLabel.adjustsFontSizeToFitWidth = YES;
self.selectButton.titleLabel.lineBreakMode = UILineBreakModeClip;
[self addSubview:self.selectButton];
[self.selectButton setFrame:CGRectMake(5, 6, 60, 31)];
}
return self;
}
Now you want to override the layout subviews method to resize the searchbar to the appropriate width, depending on whether or not the cancel button is showing. That should look something like this:
-(void)layoutSubviews
{
[super layoutSubviews];
float cancelButtonWidth = 65.0;
UITextField *searchField = [self.subviews objectAtIndex:1];
if (self.showsCancelButton == YES)
[searchField setFrame:CGRectMake(70, 6, self.frame.size.width - 70 - cancelButtonWidth, 31)];
else
[searchField setFrame:CGRectMake(70, 6, self.frame.size.width - 70, 31)];
}
Note that in the above method I added a constant for the cancelButtonWidth. I tried adding code to get the width from [self cancelButton] but that seems only accessible at runtime and doesn't allow the project to compile. In any case this should be a good start for what you need
If you want a custom button on the right, taking place of the Cancel button, just use this code (valid for iOS 9 and up):
[self.searchBar setShowsCancelButton:YES];
[[UIBarButtonItem appearanceWhenContainedIn:[self.searchBar class], nil] setTitle:#""];
[[UIBarButtonItem appearanceWhenContainedIn:[self.searchBar class], nil] setImage:[UIImage imageNamed:#"search"]];
Does anyone know how to add two system buttons to the top right side of my navigation toolbar? I know that custom buttons can be added, and I really don't understand why the system buttons can't do this too.
And I really need it. I need an add button and an edit button.
Edit to reorder and delete table rows.
Add to add a new row.
I can't use the bottom toolbar because I have a tabbar there.
Could somebody help me out?
Something like this should work (substitute your own images and action methods):
#define ACTIONEDIT 0
#define ACTIONADD 1
...
UISegmentedControl* segmentedControl = [[UISegmentedControl alloc]
initWithItems: [NSArray arrayWithObjects:
[UIImage imageNamed:#"icon-edit.png"],
[UIImage imageNamed:#"icon-add.png"],
nil]
];
[segmentedControl addTarget:self
action:#selector(segmentAction:)
forControlEvents:UIControlEventValueChanged];
segmentedControl.frame = CGRectMake(0, 0, 90, 30);
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.momentary = YES;
[segmentedControl setEnabled:YES forSegmentAtIndex:ACTIONEDIT];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]
initWithCustomView:segmentedControl];
...
- (void)segmentAction:(id)sender
{
UISegmentedControl* segCtl = sender;
int action = [segCtl selectedSegmentIndex];
switch (action) {
case ACTIONADD:
[self addToList];
break;
case ACTIONEDIT:
[self editList];
break;
}
}
With the default navigation bar, you can only have three buttons, unless I'm missing something. One on the left, one in the center, and one on the right. Even if you create a smaller button and think you have enough space, the touches will all register to the same button (whichever is linked to the right or left). If you want to get functionality like google's navbars, I would suggest implementing it yourself. It really wouldn't be that difficult, and you would get exactly the functionality that you want. If you decide to do this, I'm sure SO can guide you through difficult parts.
I wonder what would happen if you'd use a custom view for your UINavigationItem:
myViewController.navigationItem.titleView = myCustomView;
I imagine the titleView might expand all the way to the right if you don't have a button there. I'noticed that title text gets more space if there is no right button.
Then you could add a label (for the title) and your two buttons to that custom view.