NSScrollView in NSViewController - objective-c

I am making my first OSX app. My appDelegate has a window which has a contentView of NSViewController. This NSViewController has a custom view which displays on startup. I added an NSScrollView as a property of my NSViewController, and in the xib I put it in the correct position and referenced it to the files owner (the NSViewController). The scrollView never displays when the view is displayed. The code that includes the scrollView is as follows:
in the .h for the viewController:
#import <Foundation/Foundation.h>
#import <Cocoa/Cocoa.h>
#import "StockData.h"
#interface MasterViewController : NSViewController {
IBOutlet NSScrollView * scrollView1;
}
#property (retain) IBOutlet NSScrollView * scrollView1;
#property (retain) NSView * contents;
#end
in the .m for the viewController:
#import "MasterViewController.h"
#import <math.h>
#import <Foundation/Foundation.h>
#implementation MasterViewController
#synthesize scrollView1, contents;
- (void) awakeFromNib
{
self.scrollView1 = [[NSScrollView alloc] init];
self.contents = [[NSView alloc] initWithFrame:NSMakeRect(0,0,430,1000)];
[self.view addSubview:scrollView1];
[self.scrollView1 setDocumentView:self.contents];
}
#end
If anyone could help that would be awesome! Thanks!

If I understand your issue, you don't need to alloc/init the scrollView1 if it is well-connected to the xib file. The xib allocates it for your since the scrollView1 is an object of that xib. If you NSLog(#"%#",[scrollView1 description]) before and after your allocation, It should give you two different objects. I would try :
self.contents = [[NSView alloc] initWithFrame:NSMakeRect(0,0,430,1000)];
[self.view addSubview:scrollView1];
[self.scrollView1 setDocumentView:self.contents];
Now you're adding the xib scrollView1 object to the self.view.
Hope it helps!

Related

Swapping with NSViewController

I am trying swapping two Views in a Windows. I am using Cocoa Framework (just for Mac) with Xcode 5.1.1 and NSViewController for get it. All compile perfectly but this doesn't works,
I get the next message from compiler:
"libdyld.dylib 0x00007fff866995fd start + 1"
This is my Xcode Project
.h file
#import "Cocoa/Cocoa.h"
#import "PrimaryViewController.h" //My views
#import "SecondViewController.h"
#interface
AppDelegate : NSObject <NSApplicationDelegate>
#property (assign) IBOutlet NSWindow *window;
#property (weak) IBOutlet NSView *myCustomView;
#property (strong) IBOutlet NSViewController *myViewController;
-(IBAction)button1Clicked:(id)sender;
-(IBAction)button2Clicked:(id)sender;
#end
.m
#import "AppDelegate.h"
#implementation AppDelegate
//#synthesize myCustomView = _myCustomView;<br/>
//#synthesize myViewController = _myViewController;<br/>
-(IBAction)button1Clicked:(id)sender {
NSLog(#"Clicked on the first button");
[[_myViewController view ]removeFromSuperview];
_myViewController = [[PrimaryViewController alloc] initWithNibName:#"PrimaryView­Controller" bundle:nil];
[_myCustomView addSubview:[_myViewController view]];
[[_myViewController view] setFrame:[_myCustomView bounds]];
}
-(IBAction)button2Clicked:(id)sender {
NSLog(#"Clicked on the second button");
[[_myViewController view] removeFromSuperview];
_myViewController = [[SecondViewController alloc]initWithNibName:#"SecondaryView­Controller" bundle:nil];
[_myCustomView addSubview:[_myViewController view]];
[[_myViewController view]setFrame:[_myCustomView bounds]];
}
#end
Can you help me, please?
In SecondaryViewController.xib you named the file owner as SecondViewController. Change it to SecondaryViewController and it should work.
O yeah, when i created my second "view" i created a file: SecondViewController.xib, SecondViewController.h, and SecondViewController.m
So when i created a instance of it, into the method "button2Clicked" in the, initWithNibName
I called it #"SecondaryViewController" (vs #"SecondViewController").
I removed SecondaryViewController and i changed it, for SecondViewController and all works perfectly, thanks #TheAmateurProgrammerless ;)
Here my project fix it

UIPopoverControllerDelegate delegate methods not being called

I have a screen with a button. Clicking the button will display a popover with two buttons. I want to be able to use the following method when the popover is dismissed:
#pragma mark - UIPopoverControllerDelegate
- (void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController {
NSLog(#"OrderViewController.m -popoverControllerDidDismissPopover start");
}
The popover view has its own class:
#import <UIKit/UIKit.h>
#import "MenuItemModel.h"
#interface SelectedItemsOptionsViewController : UIViewController
#property (weak) id <UIPopoverControllerDelegate> delegate;
#property (strong, nonatomic) MenuItemModel *item;
#end
The class which creates the popover has:
#interface OrderViewController : UIViewController <PageViewControllerDelegate,
UITableViewDataSource, UITableViewDelegate, ServiceConnectorDelegate,
UIPopoverControllerDelegate>
So the OrderViewController - wants to know when SelectedItemsOptionsViewController has been dismissed.
I have the method declared (first block of code) and I am setting the delegate as:
SelectedItemsOptionsViewController *destViewController = (SelectedItemsOptionsViewController *)segue.destinationViewController;
popSegue = (UIStoryboardPopoverSegue *)segue;
[destViewController setDelegate:self];
destViewController.item = toDisplay;
So I am setting the delegate OK as far as i'm aware... the delegate property is #syntheized in th SelectedItemsOptionsViewController.m and well, its driving me a bit crazy.
I could be misunderstanding something here but looks like you're assigning the delegate for a UIViewController class, but where are you assigning the popOver its delegate, in the storyboard?

Objective-C message being sent to superclass

I have derived a class SignalView from UIView however when I send a message to my object of type SignalView it gets sent to a UIView and I get error :
-[UIView Initialise]: unrecognized selector sent to instance 0x1b3900
my object also appears as a UIView object in the debug watch window:
m_signalview UIView * 0x001b3900
the relevant code is:
// signalview.h
#import <UIKit/UIKit.h>
#interface SignalView : UIView
{
}
-(void)Initialise;
#end
//signalview.m
#import "SignalView.h"
#interface SignalView ()
#end
#implementation SignalView
-(void)Initialise
{
}
// viewcontroller.h
#import <UIKit/UIKit.h>
#import "SignalView.h"
#interface ViewController : UIViewController
#property (weak, nonatomic) IBOutlet SignalView *m_signalview;
#end
// viewcontroller.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize m_signalview;
- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(#"%#", m_signalview);
[m_signalview Initialise];
}
H2C03 is right. its likely not a SignalView. I would check your outlet in your view's nib file in the interface builder inspector make sure it doesn't still say UIView. If it does change it to SignalView:
Should look like this:
Then it's simply an instance of UIView and not a SignalView. You're allocating and initializing UIView when you would need a SignalView instance. When you have something like this in your code:
m_signalView = [[UIView alloc] init];
change it to
m_signalView = [[SignalView alloc] init];
I see that m_signalview is an IBOutlet.
Are you connecting that to a UIView you added in Interface Builder?
If so you might need to set the right class in its properties so that the loader can create an object of the right class.

How do we disable this button with no compiler error?

I am trying to improve myself in Objective-C and what I am on about is now modifying and changing and existed project. I did everything I wanted expect one thing. Theres an info button in my program and it doesnt related with .xib file. I tried to remove it but always my main.m gave error like SIGABRT (int retval thing.)
Here is the thing what I want to modify
http://i.stack.imgur.com/ZG51s.png // The picture of my program and info button
I am trying to remove the (i) button on the right-down corner.
Here's my code
This is my RootViewController.h
#import <UIKit/UIKit.h>
#class MainViewController;
#interface RootViewController : UIViewController {
IBOutlet UIButton *infoButton; //Silinecek
MainViewController *mainViewController;
}
#property (nonatomic, retain) MainViewController *mainViewController;
#end
This is my RootViewController.m
#import "RootViewController.h"
#import "MainViewController.h"
#implementation RootViewController
#synthesize mainViewController;
- (void)viewDidLoad {
MainViewController *viewController = [[MainViewController alloc] initWithNibName:#"MainView" bundle:nil];
self.mainViewController = viewController;
[viewController release];
[self.view insertSubview:mainViewController.view belowSubview:infoButton];
}
and also I tried to modify my AppDelegate h and m. Here they are ;
#import <UIKit/UIKit.h>
#class RootViewController;
#interface AppDelegate : NSObject <UIApplicationDelegate> {
IBOutlet UIWindow *window;
IBOutlet RootViewController *rootViewController;
}
#property (nonatomic, retain) UIWindow *window;
#property (nonatomic, retain) RootViewController *rootViewController;
#end
#import "AppDelegate.h"
#import "RootViewController.h"
#implementation AppDelegate
#synthesize window;
#synthesize rootViewController;
- (void)applicationDidFinishLaunching:(UIApplication *)application {
[window addSubview:[rootViewController view]];
//[window makeKeyAndVisible];
}
/*
- (void)dealloc {
[rootViewController release];
[window release];
[super dealloc];
}
*/
What should I do for removing that info button in my View. Thanks for the any tips
And if you are interested in this is the whole algorithm : http://pastebin.com/hHQkQYS6
Do you still have the control linked somewhere in your xib file? It is declared as an IBOutlet control. Usually when I have these controls I will use the GUI link this control in some way (I can't remember what exactly as I have not done Obj-C in a long time). But I would definitely have a look around you xib file (as well as removing [self.view insertSubview:mainViewController.view belowSubview:infoButton];
The exception mentions:
[<RootViewController 0x4b9ab20> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key infoButton.
The call stack shows that it is thrown by UINib. So this is happening during nib load. So check for all objects present, carefully, in the nib and remove the info button

Objective-C: Calling class 2 instance from class1 [alloc init] way is not working

I've got the following method on a GameScreen.m file, with its own declaration - (void) drawNumbers on a GameScreen.h file:
//GameScreen.h
#import <UIKit/UIKit.h>
#interface GameScreen : UIView
{
IBOutlet UIButton *cell00;
}
- (void) drawNumbers;
- (IBAction) onCellClick:(id)sender;
#property (nonatomic, retain) IBOutlet UIButton *cell00;
#end
//GameScreen.m
#import "GameScreen.h"
- (void) drawNumbers
{
//testing if this works, so far it doesn't
[cell00 setTitle:#"Whatever" forState:UIControlStateNormal];
[cell00 setTitle:#"Whatever" forState:UIControlStateHighlighted];
}
I'm trying to call this method from my GameScreenViewController.m file, this way:
//GameScreenViewController.m
#import "GameScreenViewController.h"
#import "GameScreen.h"
...
- (void) viewDidLoad
{
GameScreen *aGameScreen = [[GameScreen alloc] init];
[aGameScreen drawNumbers];
[aGameScreen release];
[super viewDidLoad];
}
This is supposed to change the title of a button in a GameScreen.xib file where GameScreenViewController.m is the viewController and GameScreen class is the event handler where I get all the button clicks, timers running, etc. I am trying to call [drawNumbers] from [viewDidLoad] since I want the title to be changed when the screen is brought up front (screen management is done through the AppDelegate files).
The thing is, if I call drawNumbers instance from inside the same class through
//GameScreen.m
#import GameScreen.h
-(void) onButtonClick:(id)sender
{
//some other code
[self drawNumbers];
}
it works (as to say, nothing wrong with the code implementation or the graphic interface).
I've browsed through Apple Guide and tons of pages on the Internet, but I can't seem to find any light to this. Any further help (including answers as to where exactly find the answer in the ADG) would be really appreciated.
(Edited: here goes the AppDelegate code to flip to the specific view, just in case):
//myAppAppDelegate.h
#import <UIKit/UIKit.h>
#class myAppViewController, GameScreenViewController;
#interface myAppDelegate : NSObject <UIApplicationDelegate>
{
UIWindow *window;
myAppViewController *viewController;
GameScreenViewController *gameScreenViewController;
}
- (void) flipToGameScreen;
#property (nonatomic, retain) UIWindow *window;
#property (nonatomic, retain) GameScreenViewController *gameScreenViewController;
#end
//myAppAppDelegate.m
-(void) flipToGameScreen
{
GameScreenViewController *aGameScreenView = [[GameScreenViewController alloc] initWithNibName: #"GameScreen" bundle:nil];
[self setGameScreenViewController:aGameScreenView];
[aGameScreenView release];
[gameScreenViewController.view.frame = [[UIScreen mainScreen] applicationFrame];
[viewController.view removeFromSuperview];
[self.window addSubview:[gameScreenViewController view]];
}
Since your cell00 is to be set by a NIB it will be nil if you simply do [[GameScreen alloc] init]. It will only be set if the corresponding NIB is loaded (and a connection is actually set up).
If the cell can be accessed in your viewDidLoad, create a property on GameScreen and pass it through the property (or a dedicated initWithCell: or something).
If you have something like an IBOutlet GameScreen *aGameScreen; on your GameScreenViewController (and also established a connection to cell00 in the same NIB) you should access that instead.