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
Related
I am just learning and trying to put forth some of the knowledge with objective c and cocoa. I have a little program that has a login screen which then displays a main menu. On the main menu view, there is a button that should load a view to be able to add some data to the app. When I click on the button, it doesn't fire the IBAction but throws an error
EXC_BAD_ACCESS [StartMenuViewController performSelector:withObject:]: message sent to deallocated instance 0x6080195e9f90
I know that it is because there is an object that is not instantiated when the message is being sent, but I cannot find out why. Sorry for the code and the novice level here is the main menu view controller StartMenuViewController.m file:
#import "StartMenuViewController.h"
#import "AppDelegate.h"
#import "MasterViewController.h"
#interface StartMenuViewController ()
#end
#implementation StartMenuViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do view setup here.
}
-(IBAction)showStrainView:(id)sender{
AppDelegate *delegate = nil;
delegate = (AppDelegate *)[[NSApplication sharedApplication] delegate];
MasterViewController *addStrainView = [[MasterViewController alloc] initWithNibName:#"MasterViewController" bundle:nil];
[delegate swapView:self.view toView:addStrainView.view];
}
#end
here is the StartMenuViewController.h
#import <Cocoa/Cocoa.h>
#interface StartMenuViewController : NSViewController
#property (weak) IBOutlet NSButton *showStrainViewButton;
#end
Here is the AppDelegate.h
#import <Cocoa/Cocoa.h>
#class loginView, MasterViewController,StartMenuViewController;
#interface AppDelegate : NSObject <NSApplicationDelegate>{
loginView *loginView;
MasterViewController *masterViewController;
}
#property (assign) IBOutlet NSWindow *window;
#property (readonly, strong, nonatomic) NSManagedObjectContext *managedObjectContext;
#property (readonly, strong, nonatomic) NSManagedObjectModel *managedObjectModel;
#property (readonly, strong, nonatomic) NSPersistentStoreCoordinator *persistentStoreCoordinator;
#property (strong) loginView *loginView;
#property (strong) MasterViewController *masterViewController;
#property (strong) StartMenuViewController *starMenuViewController;
-(void)swapView:(NSView *)view1 toView:(NSView *)view2;
#end
Here is the AppDelegate.m
#import "AppDelegate.h"
#include "MasterViewController.h"
#import "ScaryBugDoc.h"
#import "Strains.h"
#import "loginView.h"
#interface AppDelegate()
#end
#implementation AppDelegate
#synthesize managedObjectContext = _managedObjectContext;
#synthesize managedObjectModel = _managedObjectModel;
#synthesize persistentStoreCoordinator = _persistentStoreCoordinator;
#synthesize loginView;
#synthesize masterViewController;
#synthesize starMenuViewController;
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
// 1. Create the master View Controller
self.loginView = [[loginView alloc] initWithNibName:#"loginView" bundle:nil];
// 2. Add the view controller to the Window's content view
[self.window.contentView addSubview:self.loginView.view];
self.loginView.view.frame = ((NSView*)self.window.contentView).bounds;
}
-(void)swapView:(NSView *)view1 toView:(NSView *)view2{
//[view1 removeFromSuperview];
[self.window.contentView addSubview:view2];
view2.frame = ((NSView*)self.window.contentView).bounds;
}
#end
If you need the loginView.h and loginView.m files I can add them as well. I would appreciate any and all help. Thanks in advance
The problem is here:
MasterViewController *addStrainView = [[MasterViewController alloc]initWithNibName:#"MasterViewController" bundle:nil];
[delegate swapView:self.view toView:addStrainView.view];
You don't keep a reference to the MasterViewController so it gets deallocated even though its view is kept around. Now anytime the view tries to access methods from the view controller, things fail.
You should make addStrainView a child view controller of self in the above code so the view controller sticks around as long as its view.
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
I am trying to implement a NSWindowController subclass with new xib-file, I read up in lots of books, and researched on StackOverflow, but none of the steps provided made my window show, nor did the subclass code get executed. The new xib-file has its File's Owner set to "LogNavigatorController" and connections to the window and its contents have been made.
My AppDelegate.h:
#import <Cocoa/Cocoa.h>
#class LogNavigatorWindowController;
#interface AppDelegate : NSObject <NSApplicationDelegate>
{
LogNavigatorWindowController *logsWindowController;
}
#end
My AppDelegate.m:
#import "AppDelegate.h"
#import "LogNavigatorWindowController.h"
#implementation AppDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
// Insert code here to initialize your application
logsWindowController = [[LogNavigatorWindowController alloc] initWithWindowNibName:#"LogNavigatorWindowController"];
[logsWindowController showWindow:self];
}
#end
My LogNavigatorWindowController.h:
#import <Cocoa/Cocoa.h>
#interface LogNavigatorWindowController : NSWindowController
{
NSArray *directoryList1;
NSArray *directoryList2;
NSMutableArray *directoryList;
NSMutableArray *filePaths1;
NSMutableArray *filePaths2;
}
#property (assign) IBOutlet NSWindow *window;
#property (weak) IBOutlet NSTableView *logsTableView;
#property (unsafe_unretained) IBOutlet NSTextView *logsTextView;
#property (assign) IBOutlet NSArrayController *LogListController;
#property (retain) NSMutableArray *logsArray;
- (void) myDirectoryLogFunction;
#end
My LogNavigatorController.m:
#import "LogNavigatorWindowController.h"
#interface LogNavigatorWindowController ()
#end
#implementation LogNavigatorWindowController
#synthesize logsTableView;
#synthesize logsTextView;
#synthesize window;
- (id)init
{
self = [super initWithWindowNibName:#"LogNavigatorWindowController"];
[self loadWindow];
[self showWindow:#"Log Navigator"];
[self.window makeKeyAndOrderFront:nil];
if (self)
{
// Initialization code here.
[self myDirectoryLogFunction];
}
return self;
}
- (void)windowDidLoad
{
[super windowDidLoad];
// Implement this method to handle any initialization after your window controller's window has been loaded from its nib file.
}
- (void) myDirectoryLogFunction
{
NSLog(#"Code execution test successful");
}
#end
You don't need to create the window property since it is already available for NSWindowController subclasses. Maybe that causes the problem.
Also your init method contains a lot of code that doesn't belong there. Remove
[self loadWindow];
[self showWindow:#"Log Navigator"];
[self.window makeKeyAndOrderFront:nil];
as well as replace
self = [super initWithWindowNibName:#"LogNavigatorWindowController"];
with
self = [super init];
You may want to remove the init method at all, since you don't need it in your case.
and move
[self myDirectoryLogFunction];
to the windowDidLoad method.
Also always check that the code for instantiating the window controller (in your case from the app delegates didFinishLaunching: ) is called. Sometimes it helps to create a new project and test there, if you may have changed too much within the original project and by accident removed delegate connections or similar.
hoepfully a simple fix. :)
I'm using a collection view with a push segue to a detailed view controller. When the cell is clicked in simulator the app crashes with a break point indicating at this part of the code:
#import "DetailViewController.h"
#interface DetailViewController ()
#property (nonatomic, weak) IBOutlet UIImageView *imageView;
#end
#implementation DetailViewController
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated]; //<--------- break point
self.imageView.image = self.image;
}
#end
segue id etc is correct. So not at all sure why it shouldn't be working.
Any help on this as always is appreciated. If you need further info let me know.
A.
edit:
.h file as follows:
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController
#property (nonatomic, strong) UIImage *image;
#end
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.