I have an app with a main window and a secondary window with an NSScannerDeviceView in it.
The idea is to scan an image to memory and place it into an NSImageView in the main window.
So far so good. When the scanner window is opened I can scan an image and it is placed correctly in to the NSImageView.
The problem is this, I can scan again and again but if I close the scan window and re-open it the NSScannerDeviceView no longer works. I'm sure the solution is relatively simple but as I'm still learning obj-c / cocoa it's got me stumped.
The code I'm using is as follows: ScanWindowController.h
#import <Cocoa/Cocoa.h>
#import <Quartz/Quartz.h>
#import <ImageCaptureCore/ImageCaptureCore.h>
#interface ScanWindowController : NSWindowController <IKScannerDeviceViewDelegate, ICScannerDeviceDelegate, ICDeviceBrowserDelegate> {
ICDeviceBrowser *mDeviceBrowser;
}
#property (strong) IBOutlet IKScannerDeviceView *ScannerView;
#end
and: ScannerWindowController.m
#import "ScanWindowController.h"
#import "AppDelegate.h"
#interface ScanWindowController ()
#end
#implementation ScanWindowController
#synthesize ScannerView;
- (id)init
{
if ( ! (self = [super initWithWindowNibName: #"ScanWindowController"]) ) {
return nil;
}
mDeviceBrowser = [[ICDeviceBrowser alloc] init];
mDeviceBrowser.delegate = self;
mDeviceBrowser.browsedDeviceTypeMask = ICDeviceLocationTypeMaskLocal|ICDeviceLocationTypeMaskRemote|ICDeviceTypeMaskScanner;
[mDeviceBrowser start];
return self;
}
- (void)windowDidLoad
{
[super windowDidLoad];
}
- (void)windowWillClose:(NSNotification *)notification {
[mDeviceBrowser stop];
}
- (void)scannerDeviceView:(IKScannerDeviceView *)scannerDeviceView didScanToURL:(NSURL *)url fileData:(NSData *)data error:(NSError *)error
{
if(!error) {
[(AppDelegate*)[[NSApplication sharedApplication] delegate] recieveScannedData:data];
}
}
- (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
{
[scanner requestOpenSession];
}
- (void)deviceBrowser:(ICDeviceBrowser*)browser didAddDevice:(ICDevice*)addedDevice moreComing:(BOOL)moreComing
{
if ( (addedDevice.type & ICDeviceTypeMaskScanner) == ICDeviceTypeScanner )
{
[ScannerView setScannerDevice:(ICScannerDevice*)addedDevice];
}
}
-(void)deviceBrowser:(ICDeviceBrowser *)browser didRemoveDevice:(ICDevice *)device moreGoing:(BOOL)moreGoing
{
[device requestCloseSession];
}
-(void)didRemoveDevice:(ICDevice*)removedDevice
{
[removedDevice requestCloseSession];
}
#end
I have solved this problem (after talking to Apple), and the result is this:
The NSScannerDeviceView is activated when the window is initialised, however as this doesn't get called again and the NSScannerDeviceView is closed when the window is closed, it never gets reactivated.
The solution was to create a new method (scannerReopen) and call it each time the window is opened as follows:
#import <Cocoa/Cocoa.h>
#import <Quartz/Quartz.h>
#import <ImageCaptureCore/ImageCaptureCore.h>
#interface ScanWindowController : NSWindowController <IKScannerDeviceViewDelegate, ICScannerDeviceDelegate, ICDeviceBrowserDelegate> {
ICDeviceBrowser *mDeviceBrowser;
}
#property (strong) IBOutlet IKScannerDeviceView *ScannerView;
-(void)scannerReopen;
#end
and:
#import "ScanWindowController.h"
#import "AppDelegate.h"
#interface ScanWindowController ()
#end
#implementation ScanWindowController
#synthesize ScannerView;
- (id)init
{
if ( ! (self = [super initWithWindowNibName: #"ScanWindowController"]) ) {
return nil;
}
if(!mDeviceBrowser) {
mDeviceBrowser = [[ICDeviceBrowser alloc] init];
[mDeviceBrowser setDelegate:self];
mDeviceBrowser.browsedDeviceTypeMask = ICDeviceLocationTypeMaskLocal|ICDeviceLocationTypeMaskRemote|ICDeviceTypeMaskScanner;
[mDeviceBrowser start];
}
return self;
}
- (void)windowDidLoad
{
[super windowDidLoad];
}
- (void)windowWillClose:(NSNotification *)notification {
[mDeviceBrowser stop];
}
- (void)scannerDeviceView:(IKScannerDeviceView *)scannerDeviceView didScanToURL:(NSURL *)url fileData:(NSData *)data error:(NSError *)error
{
//process the scanned data...
if(!error) {
[(AppDelegate*)[[NSApplication sharedApplication] delegate] receiveScannedData:data];
}
}
- (void)scannerDeviceDidBecomeAvailable:(ICScannerDevice*)scanner;
{
[scanner requestOpenSession];
}
- (void)deviceBrowser:(ICDeviceBrowser*)browser didAddDevice:(ICDevice*)addedDevice moreComing:(BOOL)moreComing
{
if ( (addedDevice.type & ICDeviceTypeMaskScanner) == ICDeviceTypeScanner )
{
[ScannerView setScannerDevice:(ICScannerDevice*)addedDevice];
}
}
-(void)deviceBrowser:(ICDeviceBrowser *)browser didRemoveDevice:(ICDevice *)device moreGoing:(BOOL)moreGoing
{
[device requestCloseSession];
}
-(void)didRemoveDevice:(ICDevice*)removedDevice
{
[removedDevice requestCloseSession];
}
-(void)scannerReopen
{
[mDeviceBrowser start];
}
#end
I am very new to MAC OSX app development.
In my application I have three NSViewControllers, which are PracticeController, NoteController and QuestionController. I have to navigate to NoteViewController from PracticeController and QuestionController and comeback to the viewController from which NoteController has navigated.
For example: when we navigate to NoteController from PracticeController, then when we tap on back button from NoteController I have to come to PracticeController, and when we navigate to NoteController from QuestionController, then when we tap on back button from NoteController I have to come to QuestionController.
Please help me how to do this? I am badly searching for it. Thanks.
well, after a long time search, I found a open source library which ports the UIKit to MacOSX.
https://github.com/BigZaphod/Chameleon.git
But it's too complicated for me, so I wrote my own Navigation controller.
NSNavigationController.h
#import <Cocoa/Cocoa.h>
#class BaseViewController;
#interface NSNavigationController : NSResponder
#property (nonatomic, strong) BaseViewController *rootViewController;
- (id)initWithRootViewController:(BaseViewController *)rootViewController;
- (NSView*)view;
- (void)pushViewController:(BaseViewController *)viewController animated:(BOOL)animated;
- (BaseViewController *)popViewControllerAnimated:(BOOL)animated;
#end
NSNavigationController.m
#import "NSNavigationController.h"
#import "AppDelegate.h"
#import "BaseViewController.h"
#interface NSNavigationController ()
#property (nonatomic, strong) NSMutableArray *viewControllerStack;
#end
#implementation NSNavigationController
- (id)initWithRootViewController:(BaseViewController *)rootViewController
{
self = [super init];
if (self) {
self.rootViewController = rootViewController;
self.rootViewController.navigationController = self;
self.viewControllerStack = [[NSMutableArray alloc] initWithObjects:self.rootViewController, nil];
}
return self;
}
- (NSView*)view
{
BaseViewController *topViewController = [self.viewControllerStack objectAtIndex:[self.viewControllerStack count] - 1];
return topViewController.view;
}
- (void)pushViewController:(BaseViewController *)viewController animated:(BOOL)animated
{
if (viewController != nil) {
[self removeTopView];
[self.viewControllerStack addObject:viewController];
viewController.navigationController = self;
[self addTopView];
}
}
- (BaseViewController *)popViewControllerAnimated:(BOOL)animated
{
BaseViewController *topViewController = [self.viewControllerStack objectAtIndex:[self.viewControllerStack count] - 1];
[self removeTopView];
[self.viewControllerStack removeLastObject];
[self addTopView];
return topViewController;
}
- (void)removeTopView
{
BaseViewController *topViewController = [self.viewControllerStack objectAtIndex:[self.viewControllerStack count] - 1];
[topViewController.view removeFromSuperview];
}
- (void)addTopView
{
BaseViewController *topViewController = [self.viewControllerStack objectAtIndex:[self.viewControllerStack count] - 1];
AppDelegate *delegate = (AppDelegate*)[NSApp delegate];
[delegate.window.contentView addSubview:topViewController.view];
}
#end
BaseViewController.h
#import <Cocoa/Cocoa.h>
#class NSNavigationController;
#interface BaseViewController : NSViewController
#property (nonatomic, weak) NSNavigationController *navigationController;
#end
BaseViewController.m
#import "BaseViewController.h"
#interface BaseViewController ()
#end
#implementation BaseViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Initialization code here.
}
return self;
}
#end
It's the simplest NavigationController. I didn't implement the view animation. Hope it can help.
App stops working after adding messageUI.framework
I have a fully working App created and I want to add some new features. I added the messageUI.framework and it stoped working. If I delete the Framework it works again, but this is not the idea.
The error I received is:
-[Account initWithCoder:]: unrecognized selector sent to instance 0x1cd953a0
I have a custom NSObject called Account and I get the error when loading it:
myAccounts = [[NSMutableArray alloc] init];
myAccounts = [NSKeyedUnarchiver unarchiveObjectWithFile:savePath]; //Crashes in this line
When it was previously saved with:
[NSKeyedArchiver archiveRootObject:myAccounts toFile:savePath];
Can it be caused by some overlapping variables or something like that?
Notes:
Account.h is like:
#define kAccName #"name"
#define kAccID #"identifier"
#define kAccInitAmount #"initAmount"
#define kAccActive #"active"
#import <Foundation/Foundation.h>
#import "Transfer.h"
#interface Account : NSObject
#property (nonatomic, strong) NSString *name;
#property (nonatomic, strong) NSString *identifier;
#property (nonatomic) double initAmount;
#property (nonatomic) BOOL active;
- (id)initWithID:(NSString *)ident;
#end
And Account.m is:
#import "Account.h"
#implementation Account
#synthesize name;
#synthesize identifier;
#synthesize initAmount;
#synthesize active;
- (id)init {
self = [super init];
if (self) {
self.active = TRUE;
}
return self;
}
- (id)initWithID:(NSString *)ident {
self = [super init];
if (self) {
self.active = TRUE;
self.identifier = ident;
}
return self;
}
- (id)initWithCoder:(NSCoder *)decoder {
if (self = [super init]) {
self.name = [decoder decodeObjectForKey:kAccName];
self.identifier = [decoder decodeObjectForKey:kAccID];
self.initAmount = [decoder decodeDoubleForKey:kAccInitAmount];
self.active = [decoder decodeBoolForKey:kAccActive];
}
return self;
}
- (void)encodeWithCoder:(NSCoder *)encoder {
[encoder encodeObject:self.name forKey:kAccName];
[encoder encodeObject:self.identifier forKey:kAccID];
[encoder encodeDouble:self.initAmount forKey:kAccInitAmount];
[encoder encodeBool:self.active forKey:kAccActive];
}
#end
I just hit this problem, I cannot tell you exactly why, but refactor your Account object to any other name, I used Accounts, and it works. Something at runtime in the MessageUI.framework is colliding with your Account object name.
I'm doing a calculator app base on a online tutorial, itunes.apple. com/itunes-u/ipad-iphone-application- development/ id473757255 (tut 2)
I followed every step closely and all was fine, until the finishing step of a method call performOperation. When I build and run, the numbers and enter function work fine. Only the operation method is not working. So I presume that the main trouble is with the operation method.
BrainCalculator.h
#interface CalculatorBrain : NSObject
-(void) pushOperand: (double)operand;
-(double) performOperation: (NSString*) operation;
#end
BrainCalculator.m
#import "CalculatorBrain.h"
#interface CalculatorBrain()
#property (nonatomic, strong) NSMutableArray* _operandStack;
#end
#implementation CalculatorBrain
#synthesize _operandStack;
-(NSMutableArray *)operandStack
{
if (!_operandStack){
_operandStack= [[NSMutableArray alloc ]init];
}
return _operandStack;
}
-(void)pushOperand:(double)operand{
NSNumber *operandObject = [NSNumber numberWithDouble:operand];
[self.operandStack addObject:operandObject];
}
-(double)popOperand{
NSNumber *operandObject= [self.operandStack lastObject];
if (operandObject) [self.operandStack removeLastObject];
return [operandObject doubleValue];
}
-(double)performOperation:(NSString *)operation
{
double result = 0;
if ([operation isEqualToString:#"+"]){
result=[self popOperand] + [self popOperand];
}else if ([#"*" isEqualToString:operation]){
result = [self popOperand] * [self popOperand];
}else if ([operation isEqualToString:#"-"]){
double subtrahend = [self popOperand];
result = [self popOperand] - subtrahend;
}else if( [operation isEqualToString:#"/"]){
double divisor = [self popOperand];
if (divisor) result = [self popOperand] / divisor;
}
[self pushOperand:result];
return result;
}
#end
Initially, it seem to me that the performOperation method was pretty fishy, so I tried fiddling the
}else if ([#"*" isEqualToString:operation]){
to
}else if ([operation isEqualToString:#"*"]){
hoping it would work, but sadly it didn't.
Just for additional information
viewcontroller.m
#import "CalculatorViewController.h"
#import "CalculatorBrain.h"
#interface CalculatorViewController ()
#property (nonatomic) BOOL userIsInTheMiddleOfEnteringANumber;
#property (nonatomic, strong) CalculatorBrain *brain;
#end
#implementation CalculatorViewController
#synthesize display;
#synthesize userIsInTheMiddleOfEnteringANumber;
#synthesize brain= _brain;
-(CalculatorBrain*)brain
{
if(!_brain)_brain = [[CalculatorBrain alloc]init];
return _brain;
}
- (IBAction)digitPressed:(UIButton *)sender {
NSString * digit= [ sender currentTitle];
if (userIsInTheMiddleOfEnteringANumber){
self.display.text = [self.display.text stringByAppendingString:digit];
}
else{
self.display.text=digit;
self.userIsInTheMiddleOfEnteringANumber = YES;
}
}
- (IBAction)enterPressed {
[self.brain pushOperand:[self.display.text doubleValue]];
self.userIsInTheMiddleOfEnteringANumber = NO;
}
- (IBAction)operationPressed:(UIButton *)sender {
if (self.userIsInTheMiddleOfEnteringANumber){
[self enterPressed];
}
NSString *operation = [sender currentTitle];
double result = [self.brain performOperation:operation];
self.display.text = [NSString stringWithFormat:#"%g", result];
}
#end
help will be greatly appreciated as I'm practising xcode to prepare myself for my final year major project.
I have a problem in getting a method to work, and I am totally confused.
I am unable to hand over a string as a variable for my method.
I call the function even with the string, no variable currently.
Engine *myEngine = [Engine sharedInstance];
[myEngine getContentArrayFromEngine:#"zumbra"];
My method
-(NSMutableArray*) getContentArrayFromEngine:(NSString *)catName{
NSMutableSet* categorieContent = [[NSMutableSet alloc] init];
NSLog(#"Catname:%#", catName);
//some more code
}
NSLOG output
2011-12-18 18:49:44.165 Zitate[77224:15203] Catname:(null)
Why is catName empty ???
edit1: the complete code
ThirdViewController.m
-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
NSString* myTempCatname;
myTempCatname = cell.textLabel.text;
// NSLog(#"test select %#", myTempCatname);
DetailViewController *detailVC = [self.storyboard instantiateViewControllerWithIdentifier:#"detailzitat"];
[self.navigationController pushViewController:detailVC animated:YES];
Engine *myEngine = [Engine sharedInstance];
[myEngine getContentArrayFromEngine:myTempCatname];
}
and in the engine.m
-(NSMutableArray*) getContentArrayFromEngine:(NSString *)catName{
NSMutableSet* categorieContent = [[NSMutableSet alloc] init];
NSLog(#"Übergebener Catname:%#", catName);
// catName=#"zumbra";
// NSLog(#"Inhalt InhalteFromWeb:%#", InhalteFromWeb);
NSLog(#"Catname:%#", catName);
unsigned count = [InhalteFromWeb count];
while (count--) {
NSLog(#"count %d %#", count, [[InhalteFromWeb objectAtIndex:count] objectForKey:CATEGORY]);
if([[[InhalteFromWeb objectAtIndex:count] objectForKey:CATEGORY] isEqualToString:catName]) {
[categorieContent addObject:[InhalteFromWeb objectAtIndex:count]];
NSLog(#"Row %d has Content%#",count, [InhalteFromWeb objectAtIndex:count]);
}
}
NSLog(#"Inhalt Category:%#", categorieContent);
NSArray* tempAr = [[NSArray alloc] initWithArray:[categorieContent allObjects]];
return [NSMutableArray arrayWithArray:tempAr];
}
EDIT2:
Ok, even the hint with the catName did not work. so I have changed my code a little bit.
I have an array with a category, title, content, author, image for each row
I would like to do two things
1) get a unique list of all categories (its working fine)
2) when tapping on one of these categories , open a detailView , show the first element of this category, jump to previous and next item in category by swiping around.
For this, I am going to SET the category I have chosen
First try was to handover in the method, which did not work.
Now I though, SET the category in my engine.h and when displaying the single item, get the array for this category back.
but again, the value of the category is not stored.
ThirdViewController.h
#import <UIKit/UIKit.h>
#import "SecondViewController.h"
#interface ThirdViewController : UIViewController<UITableViewDelegate, UITableViewDataSource> {
NSMutableArray* CategoryList;
}
#property (nonatomic, retain) NSMutableArray* CategoryList;
#end
ThirdViewController.m
#import "ThirdViewController.h"
#import "engine.h"
#import "DetailViewController.h"
#implementation ThirdViewController
#synthesize CategoryList;
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
Engine *myEngine = [Engine sharedInstance];
CategoryList = [myEngine getCategories];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [CategoryList count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier =#"Cell";
UITableViewCell *cell = (UITableViewCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = [CategoryList objectAtIndex:indexPath.row];
return cell;
}
-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
NSString* myTempCatname;
myTempCatname = cell.textLabel.text;
DetailViewController *detailVC = [self.storyboard instantiateViewControllerWithIdentifier:#"detailzitat"];
[self.navigationController pushViewController:detailVC animated:YES];
Engine *myEngine = [Engine sharedInstance];
[myEngine setCategName:myTempCatname];
NSLog(#"Aufruf %#", myTempCatname);
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end
DetailViewController.h
#import <UIKit/UIKit.h>
#import <MessageUI/MFMailComposeViewController.h>
#import "engine.h"
#interface DetailViewController : UIViewController<MFMailComposeViewControllerDelegate> {
IBOutlet UILabel *authorLabel;
IBOutlet UILabel *categoryLabel;
IBOutlet UILabel *titleLabel;
IBOutlet UITextView *contentTextView;
NSString *authorText, *contentText, *categoryText, *titleText, *imageText, *catName;
NSMutableArray *contentArray;
}
#property (nonatomic, retain) IBOutlet UITextView *contentTextView;
#property (nonatomic, retain) IBOutlet UILabel *authorLabel;
#property (nonatomic, retain) IBOutlet UILabel *categoryLabel;
#property (nonatomic, retain) IBOutlet UILabel *titleLabel;
#property (nonatomic, retain) NSString *authorText, *contentText, *categoryText, *titleText, *imageText, *catName;
#property (nonatomic, retain) NSMutableArray *contentArray;
-(IBAction)vorher:(id)sender;
-(IBAction)nachher:(id)sender;
#end
DetailViewController.m
#import "DetailViewController.h"
#implementation DetailViewController
#synthesize contentTextView;
#synthesize authorText, contentText, categoryText, titleText, imageText;
#synthesize authorLabel, categoryLabel, titleLabel;
#synthesize contentArray;
#synthesize catName;
int contentIndex;
int contentMax;
- (IBAction)swipeDetected:(UIGestureRecognizer *)sender {
NSLog(#"Right Swipe detected");
}
-(IBAction) vorher:(id)sender {
NSLog(#"-----VORHER Button gedrückt-------");
if (contentIndex==0) {contentIndex=contentMax-1;}
else {contentIndex--;}
titleText = [[contentArray objectAtIndex:contentIndex] objectForKey:TITLE];
authorText= [[contentArray objectAtIndex:contentIndex] objectForKey:AUTHOR];
contentText= [[contentArray objectAtIndex:contentIndex] objectForKey:CONTENT];
authorLabel.text=authorText;
titleLabel.text=titleText;
contentTextView.text=contentText;
}
-(IBAction) nachher:(id)sender {
NSLog(#"-----Nachher Button gedrückt-------");
if (contentIndex==contentMax-1) {contentIndex=0;}
else {contentIndex++;}
titleText = [[contentArray objectAtIndex:contentIndex] objectForKey:TITLE];
authorText= [[contentArray objectAtIndex:contentIndex] objectForKey:AUTHOR];
contentText= [[contentArray objectAtIndex:contentIndex] objectForKey:CONTENT];
authorLabel.text=authorText;
titleLabel.text=titleText;
contentTextView.text=contentText;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
Engine *myEngine = [Engine sharedInstance];
contentArray = [myEngine getContentArrayFromEngine];
contentMax = [contentArray count];
UISwipeGestureRecognizer *swipeRecognizerRight =
[[UISwipeGestureRecognizer alloc]
initWithTarget:self
action:#selector(vorher:)];
swipeRecognizerRight.direction = UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:swipeRecognizerRight];
UISwipeGestureRecognizer *swipeRecognizerLeft =
[[UISwipeGestureRecognizer alloc]
initWithTarget:self
action:#selector(nachher:)];
swipeRecognizerLeft.direction = UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipeRecognizerLeft];
titleText = [[contentArray objectAtIndex:contentIndex] objectForKey:TITLE];
authorText= [[contentArray objectAtIndex:contentIndex] objectForKey:AUTHOR];
contentText= [[contentArray objectAtIndex:contentIndex] objectForKey:CONTENT];
authorLabel.text=authorText;
titleLabel.text=titleText;
contentTextView.text=contentText;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end
engine.h
//#import
#define AUTHOR #"author"
#define CATEGORY #"cat"
#define CONTENT #"content"
#define IMAGE #"image"
#define TITLE #"title"
#interface Engine : NSObject {
NSMutableArray* InhalteFromWeb;
NSInteger maxAnzahlInhalte;
NSString* categNameStorage;
}
+ (Engine *) sharedInstance;
- (NSMutableArray*) getZitateArrayFromEngine;
- (NSInteger) getMaxAnzahlZitateFromEngine;
- (NSString*) getAutor:(NSInteger)pos;
- (NSString*) getZitat:(NSInteger)pos;
- (NSString*) getAuthor:(NSInteger)pos;
- (NSString*) getCategory:(NSInteger)pos;
- (NSString*) getContent:(NSInteger)pos;
- (NSString*) getImage:(NSInteger)pos;
- (NSString*) getTitle:(NSInteger)pos;
-(NSMutableArray*) getContentArrayFromEngine;
-(void) setCategName:(NSString *) categNameVariable;
-(NSString*) getCategName;
-(NSMutableArray*) getCategories;
#end
engine.m
#import "Engine.h"
#implementation Engine
static Engine *_sharedInstance;
- (id) init
{
if (self = [super init])
{
// custom initialization
//Beginn my code
NSURL *url = [NSURL URLWithString:#"http://www.*/iMotivate.plist"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if( theConnection )
{
InhalteFromWeb = [[NSMutableArray alloc] initWithContentsOfURL:url];
maxAnzahlInhalte = [InhalteFromWeb count];
}
else
{
NSLog(#"Connection failed");
}
}
return self;
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
// NSLog(#"Recieving Response...");
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
// NSLog(#"Recieving Data...");
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Error"
message : #"An error has occured.Please verify your internet connection."
delegate:nil
cancelButtonTitle :#"OK"
otherButtonTitles :nil];
[alert show];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
// NSLog(#"DONE. Received Quotes: %d", maxAnzahlZitate);
}
// ###########
+ (Engine *) sharedInstance
{
if (!_sharedInstance)
{
_sharedInstance = [[Engine alloc] init];
}
return _sharedInstance;
}
// Getter and Setter for WebArray
- (NSMutableArray*) getZitateArrayFromEngine{
return InhalteFromWeb;
}
- (NSInteger) getMaxAnzahlZitateFromEngine{
return maxAnzahlInhalte;
}
- (NSString*) getAutor:(NSInteger)pos{
return [[InhalteFromWeb objectAtIndex:pos] objectForKey:AUTHOR];
}
- (NSString*) getZitat:(NSInteger)pos{
return [[InhalteFromWeb objectAtIndex:pos] objectForKey:CONTENT];
}
// #######
- (NSString*) getAuthor:(NSInteger)pos{
return [[InhalteFromWeb objectAtIndex:pos] objectForKey:AUTHOR];
}
- (NSString*) getCategory:(NSInteger)pos{
return [[InhalteFromWeb objectAtIndex:pos] objectForKey:CATEGORY];
}
- (NSString*) getContent:(NSInteger)pos{
return [[InhalteFromWeb objectAtIndex:pos] objectForKey:CONTENT];
}
- (NSString*) getImage:(NSInteger)pos{
return [[InhalteFromWeb objectAtIndex:pos] objectForKey:IMAGE];
}
- (NSString*) getTitle:(NSInteger)pos{
return [[InhalteFromWeb objectAtIndex:pos] objectForKey:TITLE];
}
-(NSArray*) getCategories {
NSMutableSet* categorieSet = [[NSMutableSet alloc] init];
unsigned count = [InhalteFromWeb count];
while (count--) {
NSString *tempString;
tempString=[[InhalteFromWeb objectAtIndex:count] objectForKey:CATEGORY];
// NSLog(#"tempString %#", tempString );
[categorieSet addObject:tempString];
}
// NSLog(#"categories from engine %#", categorieSet);
NSArray* tempAr = [[[NSArray alloc] initWithArray:[categorieSet allObjects]]sortedArrayUsingSelector:#selector(caseInsensitiveCompare:)];
return [NSMutableArray arrayWithArray:tempAr];
}
-(void) setCategName:(NSString *) categNameVariable
{ NSLog(#"categNameStorage 2%#",categNameStorage);
categNameStorage=categNameVariable;
NSLog(#"setCategName 1 %#",categNameVariable);
NSLog(#"categNameStorage 2%#",categNameStorage);
}
-(NSString*) getCategName {
return categNameStorage;
}
-(NSMutableArray*) getContentArrayFromEngine{
NSMutableSet* categorieContent = [[NSMutableSet alloc] init];
NSLog(#"Übergebener Catname:%#", categNameStorage);
// NSLog(#"Inhalt InhalteFromWeb:%#", InhalteFromWeb);
unsigned count = [InhalteFromWeb count];
while (count--) {
// NSLog(#"count %d %#", count, [[InhalteFromWeb objectAtIndex:count] objectForKey:CATEGORY]);
if([[[InhalteFromWeb objectAtIndex:count] objectForKey:CATEGORY] isEqualToString:categNameStorage]) {
[categorieContent addObject:[InhalteFromWeb objectAtIndex:count]];
// NSLog(#"Row %d has Content%#",count, [InhalteFromWeb objectAtIndex:count]);
}
}
// NSLog(#"Inhalt Category:%#", categorieContent);
NSArray* tempAr = [[NSArray alloc] initWithArray:[categorieContent allObjects]];
return [NSMutableArray arrayWithArray:tempAr];
}
#end
There has to be a variable conflict with 'catName' in your view controller. I'm not sure why the view controller would be in scope, but I bet if you change your parameter to "inCatName" it will be fine. It's good to use naming conventions like that for this reason.