I want to put an icon by side of the title of my navigation bar. I'd prefer not to implement it as a custom titleView, because then i'll need to create a custom titleView for each controller i put on the stack (and I have pretty deep nesting). I'm adding currently as an UIImageView to a navigationBar. My problem is to calculate exactly this icon's horizontal position. It depends on the width of the back button, which has each time another title. How do I calculate this back button frame? Googling on it seems doesn't bring any reasonable results.
Thanks in advance
You could calculate the size of a label, with
your text in it and experiment with what the button will add on..
CGSize s = [label sizeWithFont:_font];
I ran into this same issue. My solution was to add the icon as one of the leftBarButtonItems, after a flexible space. This pushes it up against the title.
UIBarButtonItem *space = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil] autorelease];
UIView *icon = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:#"titleIcon"]] autorelease];
UIBarButtonItem *iconItem = [[[UIBarButtonItem alloc] initWithCustomView:icon] autorelease];
NSArray *items = [NSArray arrayWithObjects: space, iconItem, nil];
self.navigationItem.leftBarButtonItems = items;
self.navigationItem.leftItemsSupplementBackButton = YES;
It's not quite the same as creating a custom titleView, however, in two ways: (1) the title text remains centered if possible, with the icon to its left, rather than centering the title and icon together; and (2) when you push a new view onto the stack, the icon does not slide to the left with the title; instead it fades out, like the other bar button items.
So, depending on your requirements, this solution may or may not work for you. But at least it avoids trying to match the standard title text attributes in a custom title view. (As far as I can discover, there is no automatic way to do that.)
Related
This is a bit of a hack, but trying to get a badge on a toolbaritem. Almost there, but it appears in the back, tried normal methods to get to front with no luck.
deletedCountBadge = [CustomBadge customBadgeWithString:#"0"];
deletedCountBadge.frame = CGRectMake(100,10,25,25);
UIView *view = (UIView *)[bottomToolBar.subviews objectAtIndex:0];
[view addSubview:deletedCountBadge];
Got it to work with a couple of different pointers on the net.
1) If you are moving the toolbar around at all (.frame=) make sure to set the items after the layout
2) Can use negative spacing items to get it to show up where you want.
UIBarButtonItem *deleteBadge = [BarButtonItemBadge barButtonItemBadge:#"1" insideColor:[UIColor blueColor]];
UIBarButtonItem *negativeSeperator = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
negativeSeperator.width = -30;
[bottomToolBarDictionaryButtonItems addObject:deleteBadge];
[bottomToolBarDictionaryButtonItems addObject:negativeSeperator];
// after any layout, of tool bar
[bottomToolBar setItems:bottomToolBarDictionaryButtonItems];
I am working on a navigation based application. Until now I am able to do this:
self.navigationItem.title=self.Category;
UIBarButtonItem *btnNewGame = [[UIBarButtonItem alloc] initWithTitle:#"New Game" style:UIBarButtonItemStyleBordered
target:self action:#selector(btnNewGameclicked:)];
self.navigationItem.rightBarButtonItem = btnNewGame;
[btnNewGame release];
and then I can call the method provided by the selector. No problems since here.
What happens now is that I have the left bar button item, the title and the right bar button item.
Problem
The title on the left bar button item is not back, but it appears to be the same as the navigation item's title. How can I change this? Any suggestions?
Thanks.
default behaviour of the left bar button item, is to display the title of the previous view Controller
if you want to change the text on the left bar button item, you need to replace the left (back) button like this
UIBarButtonItem *myBarButtonItem = [[UIBarButtonItem alloc] init];
myBarButtonItem.title = #"Back"; // or whatever text you want
self.navigationItem.backBarButtonItem = myBarButtonItem;
[myBarButtonItem release];
As per your question what i understand , your problem is that the title of leftbarbuttonitem is not Back, this is because you gave the previous screen some title.That's why leftbarbutton item shows the title of navigation-item and not as Back.To remove that you must have erase the title of previous view or do it pro-grammatically as given by Matt.
And why not
self.navigationItem.leftBarButtonItem.title = #"MyTitle";
?
Try this way in the viewDidLoad method:
self.navigationController.navigationBar.topItem.title = #"YourBack";
This worked for me.
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"]];
I need to create a UIToolbar that has two UIBarButtonItems. The 1st button must be centered and the 2nd item must be right aligned.
I understand and use Flexible spacing and it works great when I need to balance buttons across the UIToolbar, but with only two buttons, I can't seem to perfectly center the middle button. I've even initialized the view.toolbarItems array with
NSArray *items = [[NSArray alloc] initWithObjects:fixed, flex, center_button, flex, right_button, nil];
and set fixed.width = right_button.width ... but still, the center_button is never perfectly centered.
I had the same problem recently and solved it by creating a sort of fake UIBarButtonItem. The key in getting the alignment right was to set the possibleTitles property of both left and right bar buttons to the same value, for example:
[right_button setPossibleTitles:[NSSet setWithObject:#"Abc"]];
// Create this fake (plain) button item on the left, to correct the alignment.
UIBarButtonItem *fake = [[[UIBarButtonItem alloc] initWithTitle:#"" style:UIBarButtonItemStylePlain target:nil action:nil] autorelease];
[fake setEnabled:NO];
[fake setPossibleTitles:right_button.possibleTitles];
// The array for your toolbar items
NSArray *items = [[NSArray alloc] initWithObjects:fake, flex, center_button, flex, right_button, nil];
Late answer... I hope this can still help.
The problem is, a UIBarButtonItem's width property seems to always be zero. (I think it is because zero is used as a flag by the system to make it the "appropriate" width. A flex space is the same way.) What you might have to do is to use an image in your right button (that way, you know what its width will be), and replace your fixed space with a "left button" that uses a transparent image of the same size as the right button.
It sounds like either your toolbar is not the full width of the screen, or your center_button isn't centered in its frame. Have you tried setting center_button.imageInsets?
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.