What is the best way to use custom background images for the "cancel" and "send" buttons (barbuttonitems) in MFMailComposeViewController?
A/N: I know about the note on Apple's website about not changing interfact, but I need to do this for consistency throughout the application.
You can always send the email in the background and control how the form and email buttons look. Take a look at this post and the answer on how to do that.
Locking the Fields in MFMailComposeViewController
You can customize the look of the navigationbar, cancel and send button, through app delegate.
Try this code:
UIImage*resizedImage = [[UIImage imageNamed:#"navbar1"] resizableImageWithCapInsets:UIEdgeInsetsMake(10, 12, 12, 10)];
id navbar =[UINavigationBar appearance];
id barbutton =[UIBarButtonItem appearance];
//this customises the navigation bar
[navbar setBackgroundImage:resizedImage forBarMetrics:UIBarMetricsDefault];
UIImage *backButton = [[UIImage imageNamed:#"blueButton"] resizableImageWithCapInsets:UIEdgeInsetsMake(10 , 18, 10 , 18)];
// this customises the back bar button item in the navigation bar
[barbutton setBackButtonBackgroundImage:backButton forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
// this for other bar button items
[barbutton setBackgroundImage:backButton forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
Related
I have used the following code in my appDelegate and customizing back bar button goes well. When i used segue for the controllers navigation backbarbutton appears twice.
UIImage *buttonPortait = [[UIImage imageNamed:#"back-icon"]
resizableImageWithCapInsets:UIEdgeInsetsMake(0,0, 0,0)];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:buttonPortait
forState:UIControlStateNormal
barMetrics:UIBarMetricsDefault];
[UIBarButtonItem.appearance setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -64) forBarMetrics:UIBarMetricsDefault];
I also used navigationBar setTranslucent:NO but yet the problem surviving. Any solution for this problem. Thanks in advance.
I got the solution by altering the image size for the back bar button.
I used image size with height 30x(non-retina)/60x(retina) and width 90x(non-retina)/180x(retina)
cheers!!!
Earlier I used a navigationcontroller with this code :
self.navigationItem.title = #"News";
Now I have the problem that I no longer needed the navigationcontroller as I am using a page controller for navigation. Now I added a navigationbar however it doesn't change the title with this code anymore.
Also how can I change the background color?
IN iOS 7 use write following code in didFinishLaunchingWithOptions
if ([[UINavigationBar class] respondsToSelector:#selector(appearance)])
{
[[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed: 4.0/255.0 green:173.0/255.0 blue:214.0/255.0 alpha:1.0f ]]; //// change background color of navigationBar
[[UINavigationBar appearance] setTintColor:[UIColor whiteColor]]; /// set backButton color of navigation bar
[[UINavigationBar appearance] setTitleTextAttributes:#{NSForegroundColorAttributeName : [UIColor whiteColor]}]; // set title color
[[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], nil] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], UITextAttributeTextColor,nil] forState:UIControlStateNormal]; /// set all barButton item color
self.navController.navigationBar.translucent = NO;// set translucent NO
}
Use as per your requirement.
So there is some magic happening when you use a navigation controller that you don't see and now that you've made the switch to justing using a navigation bar you lose that magic.
Navigation bars are responsible for managing and presenting UNavigationItems, and as such hold an array of them. A NavigationItem holds things like left and right buttons, and the title or titleView. When your navigation controller pushes a new controller, it creates a brand new UINavigation item then links it to your new view controller, and then pushes that onto navigation bars stack of nav items. That's why from within your view controller you set the title with self.navigationItem.title instead of referencing the navbar.
Basically you have to manage the bar and nav items yourself now. This should about do it for you:
_navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, yOffset, CGRectGetHeight(size), height)];
_navItem = [[UINavigationItem alloc] initWithTitle:#"My navbar title"];
[_navBar setItems:#[_navItem]];
[self.view addSubview:_navBar];
Of course you'll have to manage the size a bit differently as my example comes from an app where it's being used in landscape mode.
Under iOS7 I've been experiencing an issue where the back button item will not show up if it has been set with a specific background image:
int imageSize = 21; //REPLACE WITH YOUR IMAGE WIDTH
[[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(-400.f, 0)
forBarMetrics:UIBarMetricsDefault];
UIImage *barBackBtnImg = [[UIImage imageNamed:#"BackArrowDark.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, imageSize, 0, 0)];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:barBackBtnImg
forState:UIControlStateNormal
barMetrics:UIBarMetricsDefault];
Upon doing this, any ViewController that I push in the navigation controller will have no back button item appearing, even though pressing where it should be, will make it appear, and any subsequent pushes of this view controller will have the button present on the screen.
This issue is only appearing under iOS7: everything works perfectly under iOS6.
Changing the back button completely with a leftBarButtonItem disables the back swipe, so that is not an option.
Any idea what I am doing wrong?
Thanks much for your consideration.
After trying different solutions, I found that changing the backIndicatorImage works best under iOS7, and it seems to be in line with the iOS7 interface paradigm:
[[UINavigationBar appearance] setTintColor:[UIColor grayColor]];
[[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -60) forBarMetrics:UIBarMetricsDefault]; // Takes out title
UIImage *backButtonImage = [UIImage imageNamed:#"BackArrowDark.png"];
if ([UINavigationBar instancesRespondToSelector:#selector(setBackIndicatorImage:)]) {
[[UINavigationBar appearance] setBackIndicatorImage:backButtonImage];
[[UINavigationBar appearance] setBackIndicatorTransitionMaskImage:backButtonImage];
} else {
int imageSize = 21; // REPLACE WITH YOUR IMAGE WIDTH
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:[backButtonImage resizableImageWithCapInsets:UIEdgeInsetsMake(0, imageSize, 0, 0)] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
}
With this method:
When going back in the navigation controller, the back button item transition is the same as with the default indicator (a departure from the back button sliding away as well under iOS6);
Under iOS6, the backButton is changed and keeps its default iOS6 behaviour.
I'm happy!
Make sure you are not calling this in the view controller:
self.navigationController.navigationBar.tintColor = [UIColor redColor];
In iOS 7, this will tint the navigation bar but will also make your buttons invisible, yet functional just as you are describing.
Now I am trying to change UINavigationController background image with my custom Image.
I can change with following codes.
[navigation.navigationBar insertSubview:[[UIImageView alloc] initWithImage:[UIImage imageNamed:#"navController.png"]] atIndex:1];
So I got following pic. That pic is right and show the BarButton.
But when I go to the detailViewController , there is no BackButton. However I can tap without seeing it.
After I back to MainViewController , my UINavigationController Background is happening like following pic.
They are hiding my button. I'm thinking atIndex:1 is making this problem because Index 1 is above 0 and All button Index must be 0.
That's why all buttons are disappearing.
So how can I solve that problem? Please help.
Thanks for your help.
// not supported on iOS4
UINavigationBar *navBar = [purchaseNavController navigationBar];
if ([navBar respondsToSelector:#selector(setBackgroundImage:forBarMetrics:)])
{
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"brnlthr_nav.jpg"] forBarMetrics:UIBarMetricsDefault];
}
Try using the appearance proxy provided by apple
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"your_image"] forBarMetrics:UIBarMetricsDefault];
that will set it for the entire application or you can use
[[self.navigationController.navigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"your_image"]];
I have a UIBarButtonItem that I originally change the background image to. But I would like to be able to change the same UIBarButtonItem back to a default looking one (specifically a done button). Then again back to the way it was prior to (that shouldn't be a problem).
Here is how I change the appearance at first:
[menuButton setBackButtonBackgroundImage:[UIImage imageNamed:#"menuButton.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
Then back I was trying things like:
menuButton.style = UIBarButtonItemStyleDone;
menuButton.title = #"Done";
//the above didn't do anything, so I tried to make my own image to
//replace the first image. But below did't do anything either.
[menuButton setBackButtonBackgroundImage:[UIImage imageNamed:#"doneButton.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
Use setBackgroundImage:... instead of setBackButtonBackgroundImage:..., you're only setting the appearance of back buttons (in navigation bars).