I want to add a image in the navbar as title. I'm using the following code in AppDelegate.m file
self.navigationItem.titleView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"akskeving_logo.png"]];
I'm gettin the following error: Property 'navigationItem'not found on object of type 'HsAppDelegate'
You are trying to access the navigationItem property of your app delegate, but it doesn’t have that property. navigationItem is a property of UIViewController. Something along these lines (details may be different for your app):
self.rootViewController.navigationItem.titleView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"akskeving_logo.png"]];
Edit: actually, that is probably not exactly what you want to do. You should be accessing the navigationItem of the view controller that you are presenting in the navigation controller. So,
self.somePresentedViewController.navigationItem.titleView = …;
Related
I'm having a problem with cocoa, when I run the app the tabs get added as expected, but all the web views take the same string from the url field.
Basically, if I go to google on one tab, it goes to google on all of them.
Is there any way to make only the web view on the selected tab respond, and not on the others?
Here is the code:
- (IBAction)newTab:(id)sender {
NSTabViewItem *item = [NSTabViewItem new];
[item setView:_webView];
[item setLabel:#"New Tab"];
[_tabView addTabViewItem:item];
}
It looks like you're creating a new tab and then moving your WebView to it. To create a new web view for each tab, you have some options but one is to use NSViewController:
If you create the web view in the same xib as the tab view, move it to a separate xib. Change the class of the owner of that xib to NSViewController.
When adding a new tab in your code, load the xib (assuming it is named WebView.xib):
- (IBAction) newTab: (id) sender
{
NSTabViewItem *item = [[NSTabViewItem alloc] init];
NSViewController *viewController =
[[NSViewController alloc] initWithNibName: #"WebView" bundle: nil];
WebView *webView = [viewController view];
[item setView: webView];
[_tabView addTabViewItem: item];
[_webViewControllers addObject: viewController]; // Store the view controller, remove when the user closes the tab.
}
Here's a tutorial on view controllers: http://comelearncocoawithme.blogspot.fi/2011/07/nsviewcontrollers.html
Apologies if this is a basic question but I am new to Xcode and have a storyboard app and in the storyboard (with no segue) I have a view controller with an embedded map view.
On the storyboard screen I have an image with a tap gesture linked, I have tested the tap and it works (NSLog) but I want to know how to launch my mapview view controller and also zoom to an x&y.
My code currently has
-(IBAction)handleMapTap:(UIGestureRecognizer *)sender {
NSLog(#"Tapped");
}
& I have tried;
MMMapViewController *mapViewController = [[MMMapViewController alloc] initWithNibName:#"MapView" bundle:nil];
[self.navigationController pushViewController:mapViewController animated:YES];
My view controller has a class set as MMMapViewController I have given the view controller a storyboard id of MapView (if it's required?).
I've read a lot of stackoverflow articles but can't seem to find an answer. If anyone can help I would be really grateful.
-(IBAction)handleMapTap:(UIGestureRecognizer *)sender
{
MMMapViewController *mapViewController = [[MMMapViewController alloc] initWithNibName:#"MapView" bundle:nil];
//[self.navigationController pushViewController:mapViewController animated:YES];
[self presentModalViewController:mapViewController animated:YES];
[mapViewController release];
}
It would probably help to know what self is, if it is indeed a UIViewController, then
I would make sure that self.navigationController is not nil.
You actually have the right code, as far as I can tell, but depending on your scenario, you could get away with presenting the mapView as a modal view controller.
I am using an NSViewController to load a nib with a view that renders a Core-Plot chart. I replace the "target view" using the following code:
NSViewController* aViewController = [[NSViewController alloc] initWithNibName:#"nib name" bundle:nil];
if (aViewController != nil)
{
myCurrentViewController = aViewController;
}
// embed the current view to our host view
[myTargetView addSubview: [myCurrentViewController view]];
[[myCurrentViewController view] setFrame: [myTargetView bounds]];
This results in basically everything in the chart looking slightly fuzzy. I commented out the setFrame and also tried integer values for the setFrame and it made no difference. The target view also does not have layering on.
If I get rid of the view controller and change myTargetView to the actual chart view class(PlotView) then it is no longer fuzzy. This is on 10.8. Any idea why using the NSViewController route is messing up the chart view?
Update #1: I am using from the Plot_Gallery_Mac sample project the PlotGalleryController, PlotView, PlotItem, and VerticalBarChart to generate the chart through an NSViewController. I am guessing the setup in the sample PlotItem class (particularly the renderInView method) is not compatible with using it with an NSViewController.
This has been asked before, but I cannot find a definitive answer.
I would like to design a custom UIView class. I would like to do the layout in XCode 4 in a XIB file. Ideally:
I have the files MyView.h, MyView.m and MyView.xib.
The code defines the behavior and the XIB file defines the layout.
The code may have outlets into the XIB file to reference the layout elements.
The loader of the view could be different objects.
I'd like to be able to load the view by:
MyView *v = [MyView myView];
I've tried lots of different methods of setting the File's Owner and loading the XIB via NSBundle, but I keep getting key value coding problems.
Can anyone share the basic method to do this?
I have a repo of my current code here. As you can see, it generates a key value coding error.
Oh, I seem to have figured it out.
Keys are the following:
The XIB file UIView only needs to be a generic UIView. No need to set it to your subclass.
The File's Owner needs to be your subclass.
Outlets go to the File's Owner.
In your custom UIView, load the NIB as follows:
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
UINib *nib = [UINib nibWithNibName:NSStringFromClass([self class]) bundle:nil];
UIView *v = [[nib instantiateWithOwner:self options:nil] lastObject];
v.frame = self.frame;
[self addSubview:v];
}
return self;
}
How exactly do you instantiate it? In my "container" class I have an outlet for my custom view as a property, but when I try to do self.customView = [[CustomView alloc] init];
the view does not come on screen, even though I know that it's correctly initialized because I can see the NSLog()s I put in my custom view's initWithFrame: method.
From within my main view controller, BEFORE instatiating the new class, the view is as I've defined it in the storyboard: <CustomView: 0x6a83bb0; frame = (38 153; 244 153); autoresize = RM+BM; layer = <CALayer: 0x6a83c60>>
However, inside the custom view's initWithFrame:, the frame is {{0, 0}, {0, 0}} and the view is <UIView: 0x68ca160; frame = (0 0; 0 0); autoresize = W+H; layer = <CALayer: 0x68d1800>>.
After the initialization has taken place, the main view's property for the custom view is barely (null), which baffles me.
I'm sure I'm missing something very simple here. Are you even supposed to define the custom view's within the main view in the storyboard at all?
Thanks!
I am totally new at this, but here goes:
I want to press a button in my application, and have an image display (I am planning to read it off of a camera, but to start with, I will open a .TIF file.) However, within the interface builder, I can make buttons within an NSObject object, but the literature makes it sound like I need to make an NSView object to display a file. The problem is, when I do this, the NSObject object does not seem to talk to the NSView object. I am trying to do something like:
NSString *inFilePath;
inFilePath = #"/Volumes/Data/Temp/Smiles.tiff";
NSImage *TestImage = [[NSImage alloc] initWithContentsOfFile:inFilePath];
[MyView setImage:TestImage];
Here, MyView is the NSView object. I get warnings that MyView may not respond to setImage. I have tried to define an IBOutlet within the NSObject object, and although I can connect it within the interface builder, console gives me the error:
unrecognized selector sent to class 0x1e080
So, it's not clear what the next step is. Is there an easy way to get two different objects to "talk to" each other?
Thanks
You want an NSImageView object. In the Interface Builder library this is called an Image Well, but you can configure it so that it doesn't have a bezel.
NSImageView is a subclass of NSView that is optimised for displaying images.
In your header (.h) file, you should have something like this:
#interface MyController : NSObject
{
//this declares an outlet so you can hook up the
//image view in Interface Builder
IBOutlet NSImageView* imageView;
}
#end
And in your implementation (.m) file:
#implementation MyController
//called once the nib is loaded and all outlets are available
- (void)awakeFromNib
{
NSString *inFilePath = #"/Volumes/Data/Temp/Smiles.tiff";
NSImage *testImage = [[NSImage alloc] initWithContentsOfFile:inFilePath];
#if !__has_feature(objc_arc)
[testImage autorelease];
#endif
//imageView is your outlet
[imageView setImage:testImage];
}
#end
In Interface Builder you should hook up the imageView outlet of your class to point to the NSImageView you placed on your view.