I've created a simple custom tabbar by setting the images of each item, as following:
UITabBar *tabBar = self.tabBarController.tabBar;
UITabBarItem *item0 = [tabBar.items objectAtIndex:0];
UITabBarItem *item1 = [tabBar.items objectAtIndex:1];
UITabBarItem *item2 = [tabBar.items objectAtIndex:2];
[item0 setFinishedSelectedImage:[UIImage imageNamed:#"activity_active.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"activity.png"]];
[item1 setFinishedSelectedImage:[UIImage imageNamed:#"agenda_active.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"agenda.png"]];
[item2 setFinishedSelectedImage:[UIImage imageNamed:#"settings_active.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"settings.png"]];
While this works great, I noticed that there is a black blank space under my tabbar
My images are 44px in height, but I think I have to somehow change the height of my tabbar.
The tabBar itself is 49px, and it is rendered in black color behind your images (perhaps in [UITabBar layoutSubviews]). Then your images are rendered on top. The reason of the offset is because the images you supply are too large, UITabBar expects 30x30px icons, not a picture of the entire UITabBarItem.
Here's a few things to try:
Supply only a 30x30px icon, instead of the entire tab button
After you set your images on the tab item, try this:
[item setImageInsets:UIEdgeInsetsMake(6, 0, -6, 0)]; // play with insets until it renders correctly
Subclass UITabBar and override layoutSubviews to first call super, then reposition your image as you like. Not recommended, it might break in future iOS versions.
Use -
tabBar.frame=CGRectMake(x,y,w,h);
In this way you can set xCord, yCord, width and height.
Check this:
[self.tabBar setFrame:CGRectMake(self.tabBar.frame.origin.x, self.tabBar.frame.origin.y - 30, self.tabBar.frame.size.width, self.tabBar.frame.size.height + 30)];
Related
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 have a previously existing app (pre ios8) that uses UITabbar. The tabbar is visible in ios7 simulator and device, but it is invisible in ios8. What is causing this issue? the space for the tab bar is there, but its background and text/images are not there. i've attached a pic of it.
iOS 7:
iOS 8:
Even if setFinishedSelectedImage:withFinishedUnselectedImage: is deprecated in iOS7, it is working fine in iOS7 but not in 8.
Use image and selectedImage property of UITabBarItem instead.
I also had the same issue but my problem was different.
Reference code:
UITabBarItem *tabBarItem1 = [tabBar.items objectAtIndex:0];
if ([self iOS7OrAbove])
{
//use UIImageRenderingModeAlwaysOriginal to set the custom image for ios 7 and above.
tabBarItem1.selectedImage = [[UIImage imageNamed:#"SelectedImage"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
tabBarItem1.image = [[UIImage imageNamed:#"UnselectedImage"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
}
else
{
[tabBarItem1 setFinishedSelectedImage:[UIImage imageNamed:#"SelectedImage"] withFinishedUnselectedImage:[UIImage imageNamed:#"UnselectedImage"]];
}
Using this code
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
UITabBar *tabBar = tabBarController.tabBar;
UITabBarItem *tabBarItem1 = [tabBar.items objectAtIndex:0];
UITabBarItem *tabBarItem2 = [tabBar.items objectAtIndex:1];
UITabBarItem *tabBarItem3 = [tabBar.items objectAtIndex:2];
UITabBarItem *tabBarItem4 = [tabBar.items objectAtIndex:3];
tabBarItem1.title = #"Home";
tabBarItem2.title = #"Maps";
tabBarItem3.title = #"My Plan";
tabBarItem4.title = #"Settings";
[tabBarItem1 setFinishedSelectedImage:[UIImage imageNamed:#"home_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"home.png"]];
[tabBarItem2 setFinishedSelectedImage:[UIImage imageNamed:#"maps_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"maps.png"]];
[tabBarItem3 setFinishedSelectedImage:[UIImage imageNamed:#"myplan_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"myplan.png"]];
[tabBarItem4 setFinishedSelectedImage:[UIImage imageNamed:#"settings_selected.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"settings.png"]];
is working fine..however, when I use this images, it looks pixelated on real iphone testing..using a larger (in width and height)images wont fit right because only portions of it are seen. is there a way that I can stretch these larger images to a specific width and height so the whole portions of it are seen?
Follow the sizes outlined in the iOS Human Interface Guidelines
. Additionally, don't specify the .png since you want to be able to account for non-retina and retina images (w/ #2x).
In iOS 6 or earlier, if you wanted to create a button with 32x32 size, You'd make a PNG with those pixel dimensions, and call it Button.png
Then when retina screens came along, you started to need to make 2 assets
Button.png AND Button#2x.png the #2x asset is 64x64 pixels.
With iOS7 and later, there's no need to make both assets. You just use the retina #2x assets.
Putting all your image assets into asset catalogs makes this much easier. So when you use the #2x asset from code you should not write the .png extension.
For example:
[tabBarItem1 setFinishedSelectedImage:[UIImage imageNamed:#"home_selected"]...
Note: When you reference the asset #2x asset from Storyboard, you only write the name of the asset without the #2x.
For example: for your file called home_selected#2x.png, in StoryBoard you would write home_selected.png
Im currently using Xcode 5 to develop a list oriented app. I have a custom tint for the tab bar, custom images for the tab icons, custom tint for the tab bar's icon images when its selected, but i cannot find how to customize the icon images' tint for when its not selected. Right now its just the default gray which you can barely see in contrast to my green tab bar. I want to make the tab bar icons' images and names white.
Does anybody know how to set the tab bar icons' image tint in Xcode 5?
You need to set the rendering mode for each tab's (unselected) image to UIImageRenderingModeAlwaysOriginal. So, in your app delegate, get a reference to the tab bar and then iterate over each tab bar item, adjusting the image modes.
There's probably a better way to get a reference to the tab bar, but I did the following:
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UITabBarController *tbc = [sb instantiateInitialViewController];
self.window.rootViewController = tbc;
UITabBar *tb = tbc.tabBar;
Then the image adjustment can be done as follows:
NSArray *items = tb.items;
for (UITabBarItem *tbi in items) {
UIImage *image = tbi.image;
tbi.selectedImage = image;
tbi.image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
}
You can try this to tint selected icon :
// Custom the tab bar
[[UITabBar appearance] setSelectedImageTintColor:[UIColor whiteColor]];
and this to tint the non active icon :
[self.tabBarItem setFinishedSelectedImage:[UIImage imageNamed:#"item_seleted.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"item_unselected.png"]];
You can do this purely from the storyboard without writing any code by adding a "User Defined Runtime Attribute":
Select your UITabViewController in the storyboard
Open the "Document Outline" and make sure that you select the "Tab Bar" view in the scene.
Show the "Identity Inspector". You should see a section for "User Defined Runtime Attributes"
Add the following:
Key Path: tintColor
Type: Color
Value: Select the color you want.
Try this way..it worked for me
In app delegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
UITabBarController *tabBarController=(UITabBarController*)(self.window.rootViewController);
UITabBar *tabBar=tabBarController.tabBar;
UITabBarItem *tabBarItem1=[[tabBar items] objectAtIndex:0];//first tab bar
[tabBarItem1 setFinishedSelectedImage:[UIImage imageNamed:#"yourImageSelected.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"yourImageUnselected.png"]];//image should be 30 by 30
}
run and go
If you have your tab bar in visual editor, you can do it here. Select tab bar and in "User Defined Runtime Attributes" add attribute:
Key Path: selectedImageTintColor
Type: Color
Value:
Setting Custom Tabbar with selected and non-seleted Image.
Also having tabbarItem Image Insets position in center
UITabBar *tabBar = self.tabBarController.tabBar;
UITabBarItem *item0 = [tabBar.items objectAtIndex:0];
UITabBarItem *item1 = [tabBar.items objectAtIndex:1];
UITabBarItem *item2 = [tabBar.items objectAtIndex:2];
UITabBarItem *item3 = [tabBar.items objectAtIndex:3];
[item0 setFinishedSelectedImage:[UIImage imageNamed:#"iconBlue.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"iconGray.png"] ];
[item1 setFinishedSelectedImage:[UIImage imageNamed:#"iconBlue2.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"icon-2.png"]];
[item2 setFinishedSelectedImage:[UIImage imageNamed:#"iconBlue3.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"icon-3.png"]];
[item3 setFinishedSelectedImage:[UIImage imageNamed:#"iconBlue4.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"icon-4.png"]];
item0.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0);
item1.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0);
item2.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0);
item3.imageInsets = UIEdgeInsetsMake(6, 0, -6, 0);
**In viewWillAppear method of first viewcontroller. **
Because setFinishedSelectedImage:withFinishedUnselectedImage is deprecated, I used an altered version of Ram S's answer by replacing:
[item0 setFinishedSelectedImage:[UIImage imageNamed:#"iconBlue.png"] withFinishedUnselectedImage:[UIImage imageNamed:#"iconGray.png"] ];
with:
[item0 setImage:[[UIImage imageNamed:#"iconGray.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
[item0 setSelectedImage:[[UIImage imageNamed:#"iconBlue.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];
See UITabBarItem setFinishedSelectedImage: deprecated in iOS7 for more information.
I am new to ios development.
I created UITabbar programatically and set its delegate to self. All functions well. But my tabbar consists three tab bar items. I have given different images to the different tab bar items. But they all shows another image.
This is my code:
UITabbarItem item1 = [[UITabBarItem alloc] initWithTitle:#"item1" image:[UIImage imageNamed:#"imagename"] tag:1];
Try this :
UIImage *selectedImage0 = [UIImage imageNamed:#"tab-selected.png"];
UIImage *unselectedImage0 = [UIImage imageNamed:#"tab-unselected.png"];
[item1 setFinishedSelectedImage:selectedImage0 withFinishedUnselectedImage:unselectedImage0];