I have a view controller and I want part of it to be a UIView which I would put custom UIViews that I've created in and change them throughout the run of the app.
I have my view controller and in the storyboard I put in it a UIView.
I created a custom UIView that has a MKMapView:
#interface MapUIView : UIView <CLLocationManagerDelegate,MKMapViewDelegate> {
CLLocationManager *locationManager;
}
#property (weak, nonatomic) IBOutlet MKMapView *mapCtl;
#property (strong, nonatomic) IBOutlet UILabel *address;
#property (nonatomic,strong) CLGeocoder *reverseGeo;
#end
Now what I want to do is to set the UIView in the main view controller to my custom UIView and that it will show a MKMapView.
I'm kind of new to this, so if you see anything wrong with my implementation please correct me.
Select the view, then select the identity inspector in the utilities panel on the right-hand side. You can change it to be a custom subclass of UIView there.
Note that simply creating a MKMapView property on the view doesn't actually create an instance of MKMapView or add it as a subview, so you'll need to either do that programmatically or by adding it in the storyboard.
Related
So I've created a custom UIView subclass and have it assigned to a UIView in my main storyboard. When the view loads everything is displayed properly.
The issue I'm having is that I need to be able to access properties of said custom UIView since the view is data driven.
JSON_table.h:
#import <UIKit/UIKit.h>
#interface JSON_table : UIView
#property (strong, nonatomic) IBOutlet UIView *view;
#property (weak, nonatomic) IBOutlet UISearchBar *searchbar;
#property (weak, nonatomic) IBOutlet UITableView *table_view;
#property (weak, nonatomic) NSString *data_header;
#property (weak, nonatomic) NSString *data_list;
#end
JSON_table.m:
#import "JSON_table.h"
#implementation JSON_table
- (id) initWithCoder:(NSCoder *)aDecoder{
self = [super initWithCoder:aDecoder];
if (self) {
[[NSBundle mainBundle] loadNibNamed:#"JSON_table" owner:self options:nil];
[self addSubview:self.view];
}
return self;
}
#end
(I know I'm missing delegates for tableview, ill be adding these later)
The issue I'm having is when I right click on my UIView on my storyboard I get:
The problem is when I try to connect "view" to my header file "
ViewController.h" it doesn't let me create a IBOutlet, so I cannot reference my view and its properties in code.
This is what I am trying to accomplish:
"Table" is of type UIView
Idea:
Would this have anything to do with the UIView being on the second view in my storyboard? I noticed that I don't seem to have any problem attaching to anything on the first page, but the second one I can't.
You can only connect the outlets of a view to it's class object. You are trying to connect outlets of JSON_table object to UIViewController object.
If you need to access those properties in UIViewController object. You need to import
JSON_table.h
in your view controller. And create and instantiate a object of it.
JSON_table * customView = [[JSON_table alloc]init];
Now you can access all the properties of it as:
customView.searchbar, customView.view etc.
Added by theshadow124:
Thanks to everyone who attempted to help me solve my problem. Due to being fairly new to coding for iOS I didn't realize I had to assign a custom class to every UIViewController in my storyboard(I thought they they would inherit from the base if I didn't specify). simply creating a new subclass of UIViewController and assigning it under the Identity inspector fixed my problem and now I can properly assign outlets.
Im going to accept this answer because it was one of the issues I ran into after fixing the subclass on the storyboard issue.
Please make sure that in assistant editor your are opening the same class that your custom class is contained in .
I am trying to write my first hello world in xcode. I have two labels and two buttons in my view, and my AppDelegate.h file is like this:
#interface QuizAppDelegate : NSObject <UIApplicationDelegate>
{
int currentQuestionIndex;
// The model objects
NSMutableArray *questions;
NSMutableArray *answers;
// The view objects
IBOutlet UILabel *questionField;
IBOutlet UILabel *answerField;
}
#property (nonatomic, retain) IBOutlet UIWindow *window;
- (IBAction)showQuestion:(id)sender;
- (IBAction)showAnswer:(id)sender;
#end
Now i am trying to add reference to my label. I go to LaunchScreen.xib and right click on the label. According to the tutorial, i have to see "answerField" and "questionField" under the "Outlets" tab, but nothing shows up. Can anyone tell me why this can be happening?
Thanks
A few things:
1) That code should really be in a view controller and not the application delegate
2) You probably should be looking in the Main.storyboard file and not LaunchScreen.xib
3) Make sure that File's Owner is set to the correct view controller on Main.storyboard after you move that code into a view controller.
I'm using a scroll view with 3 views, and I need to place one label that shows up on each view,
the views are on separate view controllers: in view controller.h
#import "PagerViewController.h"
#interface ViewController : PagerViewController {
}
#property (strong, nonatomic) IBOutlet UIView *View1;
#property (strong, nonatomic) IBOutlet UIView *View2;
#property (strong, nonatomic) IBOutlet UIView *View3;
I've placed them as (in ViewController.m)
[self addChildViewController:[self.storyboard instantiateViewControllerWithIdentifier:#"View1"]];
Should I fix an NSString
and Outlet to do this?
I need the labels to move with the scroll not to be separate from each other.
What you want, cannot be done with a single UILabel. You will have to create 3 separate labels and write the logic that will update all of them.
Create the UILabel outlets and write a method something similar to the method below:
- (void)updateLabels:(NSString *)text
{
self.label1.text = text;
self.label2.text = text;
self.label3.text = text;
}
This is just the way UIView's work and you cannot make them draw outside of their bounds.
I suggest you follow up on more iOS basics before going into complex layouts.
If you need to separate these views, a well-maintainable solution could be three separated label and one function (updateLabels:) in which the three label is updated to the same value.
Why outlet to view called second get nil in willRotateToInterfaceOrientation:duration:? There is two top-level views in the xib, and first and second outlet are pointing to them. Is it not allowed to have two top level view in one XIB? I use XIB with UIViewController. second outlet still exist in viewDidLoad method.
I forget to set up property as strong, instead of weak. And because there is no pointer referring to the second view, it get released.
#property (strong, nonatomic) IBOutlet UIView *first;
#property (strong, nonatomic) IBOutlet UIView *second;
I get the famous loaded the "MyController" nib but the view outlet was not set error. However I made sure, that the IBOutlet view is set.
Once the exception is thrown I hit a breakpoint. Below you can see that
All IBOutlets are connected
All IBOutlets are set
When unfolding UIViewController super-class, I can see that _view is 0x00000000 and obviously causes this exception.
Code (header)
#interface InfoDialogViewController : UIViewController
#property (strong, nonatomic) id episode;
#property (strong, nonatomic) NSString *identifier;
#property (strong) IBOutlet UIView *regularSide;
#property (strong) IBOutlet UIView *flippedSide;
#property (weak) IBOutlet UIImageView *episodeCover;
#property (weak) IBOutlet UITextView *episodeTitle;
#property (weak) IBOutlet UITextView *episodeSummary;
- (IBAction)flip:(id)sender;
#end
Some notes
The xib file contains three UIViews on its root level (Flipped, Regular, View)
InfoDialogViewController.m file doesn't contain any methods (I don't do any funky by overriding)
I am using this Controller in combination with addChildViewController.
Anybody has an idea what happens here and how I can fix it? Does ARC play some tricks on me?
Please check:
1. The Class for your View Controller's View should be UIView
2. File owner should be your View Controller
3. Right CLick on File Owner, your view Outlet should be set.
If it is already solved, can u mention what solved your issue?