My code here:
for (NSInteger i = 1; i<= 4 ; i ++) {
UIViewController *VC = self.viewControllers[i-1];
UIImage *itemImage = [[UIImage imageNamed:[self getTabBarItemImageNameFromIndex:i selected:NO]] imageWithRenderingMode:UIImageRenderingModeAutomatic];
UIImage *itemImageSelected = [[UIImage imageNamed:[self getTabBarItemImageNameFromIndex:i selected:YES]]imageWithRenderingMode:UIImageRenderingModeAutomatic];
UITabBarItem *item = [[UITabBarItem alloc]initWithTitle:[self getTabBarItemTitleWithIndex:i] image:itemImage selectedImage:itemImageSelected];
item.tag = i-1;
VC.tabBarItem = item;
}
First I run :
I want to shrink the UITabBarItem size, the original size of picture is 36 × 36 pixels.
Then I add these code:
item.imageInsets = UIEdgeInsetsMake(3, 3, 3, 3);
It does well,but when I press the TabBarItem the size of item was changed
I know the issue is about the setting of imageInsets, but I don't know how to resize the TabBarItem without to set imageInsets.
I don't think that the standard UITabBar control is very customizable. I would recommend you create your own custom tab bar which fits your need, or use something like UISegmentedControl which is quite customizable.
Have a look at these threads for reference:
how to resize iphone tab bar in xcode?
How do I resize the tab bar items in Xcode 4.3.1?
Related
I have a tab bar on iOS and I set the tab bar images using SVGs. The SVGs are set via the XamSvg plugin.
I want the central tabbar item image to be larger than the ones on the other tabs. To do so, I use this code in
In AwakeFromNib:
CenterTab.Image = SvgFactory.FromBundle(ViewModel.Images.CenterTabSvg, 24);
CenterTab.ImageInsets = new UIEdgeInsets(-5, -5, -5, -5);
It works but every time I tap on the center tab, its image size keeps increasing.
I also tried this with no success:
var centerImage = SvgFactory.FromBundle(ViewModel.Images.CenterTab, 40).ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal);
CenterTab.SetFinishedImages(centerImage,centerImage);
centerImage.ImageInsets = new UIEdgeInsets(3,-13,-5,-5);
Try This :
UITabBarItem *centerTab = [self.tabBarController.tabBar.items objectAtIndex:2];
[centerTab setImage:[[UIImage imageNamed:#"iconGray.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];//Your Image
[centerTab setSelectedImage:[[UIImage imageNamed:#"iconBlue.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];//Your Image
I want my tab bar item to have original icon colors in all states. I could not do it in IB so I managed to change them programmatically:
for (int i=0; i<[_tabBar.subviews count]; i++) {
UITabBarItem * item = (UITabBarItem*)[_tabBar.subviews objectAtIndex:i];
UIImage *image = [[UIImage imageNamed:imageName] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
item.image = image;
//item.selectedImage = image; //CRASH :(
}
However, I am not able to set item.selectedImage = image;. This result s in crash. How to set it in selected image state and other states?
You can set the render mode of an image in a .xcassets folder.
Simply select "Original Image" from "Render as" in the attributes inspector. After you change that you can simply select the images you want for "Image" and "Selected image" in your storyboard for your Tab Bar Image. The image will appear gray in the storyboard but will render normally when your app runs.
It's very unusual to traverse a view hierarchy like you're doing.
I am trying to add UITabBarController programmatically. Everything is working fine but I am having two issues.
I am setting tabbar background image but it shows a different image which I dont even have in resources.
I am using this image as tabbar background image with a green line above :
But it shows another green line at bottom like this:
Here is the code I am using for this:
[self.myTabBarController.tabBar setBackgroundImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"tabbar.png" ofType:nil]]];
Another issue is, I am setting tabbar item images using this code:
MyViewController *myController = [[MyViewController alloc] initWithNibName:#"MyViewController" bundle:nil];
UINavigationController *myNavController = [[UINavigationController alloc] initWithRootViewController: myController];
[myNavController.tabBarItem initWithTitle:#"" image:[UIImage imageNamed:#"ads_inactive.png"] selectedImage:[UIImage imageNamed:#"ads_active.png"]];
Images are set but when i try to add title in MyViewController's viewDidLoad using this:
self.title = #"My Ads";
It shows same title on tabbar item too but I dont want any title there.
How I can fix this issue?
Thanks
The image size is less than the frame size of tab bar , so to cover to frame area background image show two times.
You can change it in two ways
1.)Change the image size that will be not the best option
2.) set the content insets of tabBar like (0,0,0,0)
Example:
UITabBar *tabBar = self.tabBarController.tabBar;
iterm0.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0);
UITabBarItem *iterm0 = [tabBar.items objectAtIndex:0];
[iterm0 setImage:[[UIImage imageNamed:#"tab1_normal"]
imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
[iterm0 setSelectedImage:[[UIImage imageNamed:#"tab1_selected"]
[(UITabBarItem *)[self.tabBarController.tabBar.items objectAtIndex:0] setTitle:#""];
I am trying to set the tab bar icons of my UITabBarController with custom *.png files (one for the selected and one for unselected).
The images are all in non-interlaced png format and are named correctly (#2x, #3x, etc) residing in an *.imageset.
But the tab bar items are only shown as silhouettes like this:
I tried to set these images within Interface Builder, without success. Then I also tried to set them programmatically in the "loadView" function of MyTabBarController (which is extending UITabBarController) like this:
UIImage *selectedImage;
UIImage *unselectedImage;
// tab1
selectedImage = [UIImage imageNamed:#"cmdGamesActive"];
unselectedImage = [UIImage imageNamed:#"cmdGamesInactive"];
UITabBarItem *item1 = [self.tabBar.items objectAtIndex:0];
item1 = [item1 initWithTitle:#"Games" image:unselectedImage selectedImage:selectedImage];
// tab2
selectedImage = [UIImage imageNamed:#"cmdFriendsActive"];
unselectedImage = [UIImage imageNamed:#"cmdFriendsInactive"];
UITabBarItem *item2 = [self.tabBar.items objectAtIndex:1];
item2 = [item2 initWithTitle:#"Friends" image:unselectedImage selectedImage:selectedImage];
// tab3
selectedImage = [UIImage imageNamed:#"cmdTrophiesActive"];
unselectedImage = [UIImage imageNamed:#"cmdTrophiesInactive"];
UITabBarItem *item3 = [self.tabBar.items objectAtIndex:2];
item3 = [item3 initWithTitle:#"Trophies" image:unselectedImage selectedImage:selectedImage];
// tab4
selectedImage = [UIImage imageNamed:#"cmdSettingsActive"];
unselectedImage = [UIImage imageNamed:#"cmdSettingsInactive"];
UITabBarItem *item4 = [self.tabBar.items objectAtIndex:3];
item4 = [item4 initWithTitle:#"Settings" image:unselectedImage selectedImage:selectedImage];
... with the same result.
Any ideas how to solve this issue ?
According to this answer, I did something extra and kind of have answer for you here. I have my custom UITabBarController, which is linked with my UITabBarController in the StoryBoard file. So in order to remove the automatic tint provided by iOS when the TabBar is unselected, I ended up removing it in this manner. The images can be a vast variety of images but just in the way recommended here. Here it goes:
NSArray *navConArr = self.viewControllers;//self is custom UITabBarController
UINavigationController *naviOne = [navConArr objectAtIndex:0];//I have 3 different tabs, objectAtIndex:0 means the first tab navigation controller
UITabBarItem *naviBtn = naviOne.tabBarItem;
UIImage *image = [[UIImage imageNamed:#"iconNaviOne"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
[naviBtn setSelectedImage:image];
[naviBtn setImage:image];
Thankfully, this works like a charm (:
I was facing a similar issue.
I had chosen few icons for my tabs such as 'mic', 'smiley' and 'settings'.
But the only things visible when I executed the program were grey and blue squares.
I modified my '.png' images to be transparent and now they are visible as they were intended to.
i.e, make sure the images used for tab icons do not have a background.
This should do the trick:
UITabBarItem *item0 = [_tabBar.items objectAtIndex:0];
item0.image = [[UIImage imageNamed:#"edit_profile_tab"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
item0.selectedImage = [[UIImage imageNamed:#"edit_profile_tab_active"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
I'd like to show a UITabBarItem badge above the selectionIndicatorImage. There are 3 screenshots:
Screenshots
Light gray color is the selectionIndicatorImage. Yes, badge looks good. When I touch up inside at the cloud icon UITabBar become:
It's wrong.. I'd like to show badge above the selection image.
If there is no icon for UITabBar - it looks good.
How can I fix this issue?
Thanks in advance.
Edited
I add icons in the storyboard. For badge I've made the code:
UITabBarItem *cartTabBarItem = (UITabBarItem *)[self.tabBarController.tabBar.items objectAtIndex:3];
if ([[DataSourceWrapper getInstance] getFullCost] == 0)
cartTabBarItem.badgeValue = nil;
else
cartTabBarItem.badgeValue = [NSString stringWithFormat:#"%.0f тнг", [[DataSourceWrapper getInstance] getFullCost]];
For selectionIndicatorImage
[[UITabBar appearance] setSelectionIndicatorImage:[UIImage imageNamed:#"selected-tabbar-bg.png"]];
I know it's a bit tricky, but I think Apple didn't add TabBar subview in correct order.
anyway I've fixed it the following way
for (UIView *subview in marketTrackerAppDelegate.tabBarController.tabBar.subviews)
{
if ([marketTrackerAppDelegate.tabBarController.neededController.tabBarItem respondsToSelector:#selector(view)] &&
[marketTrackerAppDelegate.tabBarController.neededController.tabBarItem performSelector:#selector(view)] == subview)
{
[marketTrackerAppDelegate.tabBarController.tabBar bringSubviewToFront:subview];
break;
}
}
I had the same issue. You can fix it with code that #dollar8 suggested or change order of UITabBarItems creation.
I have 4th tab with badge and SelectionIndicatorImage of 5th tab overlay badge of 4th tab, so first I set 5th tab:
UIImage *item5image = [UIImage imageNamed:#"profile_tabbar_item"];
UIImage *item5imageSel = [UIImage imageNamed:#"profile_tabbar_item_selected"];
item5image = [item5image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
item5imageSel = [item5imageSel imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
tab5.tabBarItem = [[UITabBarItem alloc] initWithTitle:#"" image:item5image selectedImage:item5imageSel];
and after set 4th tab:
UIImage *item4image = [UIImage imageNamed:#"messages_tabbar_item"];
UIImage *item4imageSel = [UIImage imageNamed:#"messages_tabbar_item_selected"];
item4image = [item4image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
item4imageSel = [item4imageSel imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
tab4.tabBarItem = [[UITabBarItem alloc] initWithTitle:#"" image:item4image selectedImage:item4imageSel];
And the order of subview will be right.
When I set 4th tab before 5th tab - the SelectionIndicatorImage overlay badge view.