ok, i was trying to understand this post about best way to transfer data from one view controller to other.
the thing is, if i want to set an attr of the object its works like a champ. If i try to set the entire object, it doesnt do it.
my code is:
#protocol AppDelegateProtocol
- (Lote*) theLoteAppObject;
#end
on AppDelegate:
#interface AgroferiaAppDelegate : NSObject <UIApplicationDelegate, AppDelegateProtocol> {
Lote *theLoteAppObject;
}
#property (nonatomic, retain) Lote *theLoteAppObject;
#end
...
...
- (id) init;
{
self.theLoteAppObject = [[Lote alloc] init];
[theLoteAppObject release];
return [super init];
}
the class where i get the problem (UIViewcontroller):
-(void)tableView:(UITableView *) aTableView didSelectRowAtIndexPath:(NSIndexPath *) indexPax{
...
NSArray *lotes = [[self.evento lotesStore]allLotes] ;
Lote* theDataObject = [self theLoteAppObject];
theDataObject._id = [[lotes objectAtIndex:[indexPax row]]_id];
[[self navigationController]pushViewController:lotesOpViewController animated:YES];
}
- (Lote*) theLoteAppObject;{
id<AppDelegateProtocol> theDelegate = (id<AppDelegateProtocol>) [UIApplication sharedApplication].delegate;
Lote* theDataObject;
theDataObject = (Lote*) theDelegate.theLoteAppObject;
return theDataObject;
}
so that works, but if i want to do the followimg,
theDataObject = [lotes objectAtIndex:[indexPax row]];
it does not save the object on theDataObject.
is this a problem of bad memory managment?
edit: is it theDataObject a reference from appDelegate ?? or here is the problem?
try something like this:
if([indexPax row] < [lotes count])
{
Lotes * dataObjectToCopy = [lotes objectAtIndex: [indexPax row]];
if(dataObjectToCopy)
{
theDataObject = [dataObjectToCopy copy];
}
}
This creates a separate, retained copy of your Lote object. Make sure to release it when you're finished with it (if you're not using ARC).
Related
I asked a question yesterday regarding my table view and linking unique detail views to each cell in the table view. I believe I got a good answer to my question here. (Hopefully you can read that post and see what I need). Basically I wanted to know if I am making my singleton correctly. Here is my code:
timerStore.h
#import "Tasks.h"
#interface timerStore : NSObject
{
NSMutableDictionary *allItems;
}
+(timerStore *)sharedStore;
-(NSDictionary *)allItems;
-(NSTimer *)createTimerFor:(Tasks *)t inLocation: (NSIndexPath *)indexPath;
-(void)timerAction;
#end
timerStore.m
#implementation timerStore
+(timerStore *)sharedStore{
static timerStore *sharedStore = nil;
if (!sharedStore)
sharedStore = [[super allocWithZone:nil]init];
return sharedStore;
}
+(id)allocWithZone:(NSZone *)zone{
return [self sharedStore];
}
-(id)init {
self = [super init];
if (self) {
allItems = [[NSMutableDictionary alloc]init];
}
return self;
}
-(NSDictionary *)allItems{
return allItems;
}
-(NSTimer *)createTimerFor:(Tasks *)t inLocation: (NSIndexPath *)indexPath {
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:t.timeInterval target:self selector:#selector(timerAction) userInfo:nil repeats:1.0];
[allItems setObject:timer forKey:indexPath];
return timer;
}
-(void)timerAction{
//custom properties here
}
#end
I'm kind of confused because I was under the impression that a cell's index path gets recycled as you scroll down (dequeue). I may be wrong though. Anyway, am I on the right path to making a singleton as the guy in the link suggested?
The best way to implement App Singleton is as follows
Header file
#import <Foundation/Foundation.h>
#interface AppSingleton : NSObject
#property (nonatomic, retain) NSString *username;
+ (AppSingleton *)sharedInstance;
#end
Implementation File
#import "AppSingleton.h"
#implementation AppSingleton
#synthesize username;
+ (AppSingleton *)sharedInstance {
static AppSingleton *sharedInstance = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedInstance = [[self alloc] init];
});
return sharedInstance;
}
// Initializing
- (id)init {
if (self = [super init]) {
username = [[NSString alloc] init];
}
return self;
}
#end
Note:
What this does is it defines a static variable (but only global to this translation unit) called sharedInstance which is then initialised once and only once in sharedInstance Method. The way we ensure that it’s only created once is by using the dispatch_once method from Grand Central Dispatch (GCD). This is thread safe and handled entirely by the OS for you so that you don’t have to worry about it at all.
Using Singleton To set value
[[AppSingleton sharedInstance] setUsername:#"codebuster"];
Using Singleton to get value.
NSString *username = [[AppSingleton sharedInstance] username];
Further Reference and Reading
So i'm trying to pass data between two views (first view is tableViewController,when cell is pressed data is send to second view,second view got imageView, when data is send image is shown) using this tutorial iphonedevsdk.
I'm using same theAppDataObject method in my views:
- (AppDataObject*) theAppDataObject
{
id<AppDelegateProtocol> theDelegate = (id<AppDelegateProtocol>) [UIApplication sharedApplication].delegate;
AppDataObject* theDataObject;
theDataObject = (AppDataObject*) theDelegate.theAppDataObject;
return theDataObject;
}
When cell is pressed i'm trying to send data theAppDataObject.imageString = tempImageString;:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
tempImageString = (((championList *) [self.champions objectAtIndex:indexPath.row]).championImage);
AppDataObject *theDataObject = [self theAppDataObject];
NSLog(#"tempIm-g = %#",tempImageString);
theDataObject.imageString = tempImageString;
NSLog(#"theAppDataObject.imageString = %#",theDataObject.imageString);
[self.navigationController popToRootViewControllerAnimated:YES];
}
NSLog output:
tempIm-g = Champ_0.jpg
theAppDataObject.imageString = (null)
SecondViewController (show image):
-(void)viewWillAppear:(BOOL)animated
{
AppDataObject* theDataObject = [self theAppDataObject];
UIImage *tempImage = [UIImage imageNamed:theDataObject.imageString];
NSLog(#"temp image = %#",tempImage);
[choosenChampionImageView setImage:tempImage];
}
NSLog output:
temp image = (null)
My problem is that theAppDataObject.imageString is always null
Possible solutions that i know:
Do not use AppDataObject as generic data container and just save data in appDelegate.
Ex.:
AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
appdelegate.imageString = tempImageString;
But i want to figure out how to use protocols.
What i tried:
Make theDataObject global:
view1.h
#interface championsListTableViewController : UITableViewController
{
NSString *tempImageString;
AppDataObject* theDataObject;
}
#property(strong,nonatomic) NSString *tempImageString;
#property(strong,nonatomic) AppDataObject* theDataObject;
output of NSLog(#"theDataObject is %#",theDataObject); :
theDataObject is (null), how is this possible?
First Check theAppDataObject is null or not.
If it is null then:
Write AppDataObject* theDataObject; in your inteface and declare a property as strong
If theDelegate.theAppDataObject is returning null , allocate that object first.
If it is not null then:
Change this line theAppDataObject.imageString = tempImageString;
to
theAppDataObject.imageString = [tempImageString retain];
If you are using ARC set the property of imageString to strong.
or Check with this
theAppDataObject.imageString = [[NSString alloc] initWthString:tempImageString];
In a class if you want to use a protocal you can use like as :
// this the way too declare a protocal.
// .h file
#protocol TestProtocol <NSObject>
-(void)testMyProtocolMethod:(NSString *)testvalue;
#end
#interface TestProtocolClass: NSObject
{
id <TestProtocol> delegate;
}
#property (nonatomic , assign) id <TestProtocol> delegate;
/* synthesize in the .m file of this class*/
#end
//Now you have to use this protocol in any class where you want to use , Do like as:
//let us suppose you want to use this protocal method in a class named "DemoProtocal".
// .h file
import "TestProtocol.h"
#interface DemoProtocal <TestProtocol>{
}
#end
//.m file
#import "DemoProtocal.h"
#implementation DemoProtocal
- (id)init{
TestProtocol *test = [[TestProtocol alloc]init];
test.delegate = self;
}
-(void)testMyProtocolMethod:(NSString *)testvalue{
// Do appropriate things.
}
#end
In any class where you want to set any variable of the "AppDelegate Class", you can try this, this will surely solve your problem.
//Declare a variable from where you want to set the value of the "AppDelegate Class".
//in the yourclass.h file.
AppDelegate/* this is the main class of the Application*/ *appDel;
//and initialize it where you want to use or you can initialize at the init of the class.
appDel = (AppDelegate *)[[UIApplication sharedApplication]delegate];
// Then set the value.
appDel.imageString = tempImageString;
this is probably simple but I'm stuck!
Basically I have a parent and child view controller, and I'm trying to pass data from the child to the parent.
//Child VC interface
#protocol ANSearchGetawayFilterDelegate
-(void)selectedCell:(NSString *)cellTitle;
#end
#interface ANSearchGetawayFilterViewController : UIViewController <UITableViewDelegate, UITableViewDataSource, UISearchBarDelegate>
{
NSString* cellTitle;
}
#property (nonatomic, assign) id<ANSearchGetawayFilterDelegate> delegate;
#end
//Child VC implementation
#implementation ANSearchGetawayFilterViewController
#synthesize delegate = _delegate;
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
cellTitle = selectedCell.textLabel.text;
[[self delegate] selectedCell:cellTitle];
[self dismissModalViewControllerAnimated:YES];
}
//Parent VC interface
#import "ANSearchGetawayFilterViewController.h"
#interface ANGetawayFilterViewController : UIViewController <ANSearchGetawayFilterDelegate>
{
NSString* _cellText;
}
//Parent VC Implementation
- (id)initWithNibName:(NSString*)nibNameOrNil bundle:(NSBundle*)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
{
// Custom initialization
ANSearchGetawayFilterViewController *search = [[ANSearchGetawayFilterViewController alloc] init];
search.delegate = self;
}
return self;
}
//delegate method
-(void)selectedCell:(NSString *)cellTitle
{
_cellText = cellTitle;
NSLog(#"cell text %#", _cellText);
}
the delegate method is never called and when is NSLog the _cellText else where it comes up as null...what am I doing wrong? Thanks!
You are most likely creating a new instance of ANSearchGetawayFilterViewController when you present it and not configuring the delegate on it.
When you called
ANSearchGetawayFilterViewController *search = [[ANSearchGetawayFilterViewController alloc] init];
search.delegate = self;
you created an instance of ANSearchGetawayFilterViewController and then set the delegate up correctly, but you never stored this instance of ANSearchGetawayFilterViewController anywhere. So later on when you come to present it you call again
ANSearchGetawayFilterViewController *search = [[ANSearchGetawayFilterViewController alloc] init];
which gives you a completely different instance, which you then need to configure again. For example
ANSearchGetawayFilterViewController *search = [[ANSearchGetawayFilterViewController alloc] init];
ANSearchGetawayFilterViewController *search1 = [[ANSearchGetawayFilterViewController alloc] init];
NSLog(#"%d", search1 == search);
#=> 0
To fix update your code to be
- (BOOL)textFieldShouldBeginEditing:(UITextField*)textField;
{
BOOL shouldBeginEditing = YES;
NSLog(#"text field should begin editing");
ANSearchGetawayFilterViewController *myANSearchGetawayFilterViewController = [[[ANSearchGetawayFilterViewController alloc] init] autorelease];
myANSearchGetawayFilterViewController.delegate = self; // <--- configure the delegate
[self presentModalViewController:myANSearchGetawayFilterViewController animated:YES];
[self closeAllPickers];
return shouldBeginEditing;
}
I wouldn't make it an ivar as the likelihood is you will present this viewController momentarily just to select some data and then get rid of it, so it is probably safe to discard it and make a new one each time.
Au contraire, the delegate method is being called (hence the NSLog()). However, _cellText is (null) because the value being passed in is nil, ergo selectedCell.textLabel.text.
Firstly, are you sure that the -selectedCell method is being called?
You can do this by putting an NSLog() before or after -tableViewDidSelectRow...
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
...
NSLog(#"TABLEVIEW DID SELECT ROW BEFORE -> %# <-", cellTitle);
[[self delegate] selectedCell:cellTitle];
NSLog(#"TABLEVIEW DID SELECT ROW DELEGATE CALLED");
...
}
Also, you might want to do some cleanup (optional)
Firstly, you are leaking in your initialisation method. Either set the ANGetawayFilterViewController as a property of the parent class using the delegate, or release it after you set the delegate.
Secondly, in the -tableViewDidSelectRow, your code assumes that the delegate has the -selectedCell method coded. If you don't have the method implemented, then the application will result in a crash. You can prevent this by checking to see if the delegate -respondsToSelector...:
if ([self.delegate respondsToSelector:#selector(selectedCell:)]) {
[self.delegate selectedCell:cellTitle];
}
Thirdly, the method of which is being called by the delegate to notify the parentViewController doesn't follow the general schema that delegate methods use, with the exception of -numberOfRowsInSection (UITableViewDelegate). Your method should contain the actual ANFilterGetawayViewController instance too:
- (void) filterGetawayViewController:(ANSearchGetawayFilterViewController *) controller didSelectCellWithTitle:(NSString *) title {
...
}
It can be called as such:
[self.delegate filterGetawayViewController:self didSelectCellWithTitle:cellTitle];
Are you using ARC? Because when the init function ends, your object (and it's reference to the delegate) are cleaned up. What happens if you make the search variable a global one (defining it in your header and initializing it in your code)?
Assuming you are using ARC:
You need to make a retained #property for your ANSearchGetawayFilterViewController instance. It will have been released by ARC by the time the delegate method is called. Do something like this.
#property (strong, nonatomic) ANSearchGetawayFilterViewController *search;
...
#synthesize search = _search;
- (id)initWithNibName:(NSString*)nibNameOrNil bundle:(NSBundle*)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
{
// Custom initialization
self.search = [[ANSearchGetawayFilterViewController alloc] init];
self.search.delegate = self;
}
return self;
}
Not related to your problem, but best practice is to check if the delegate actually implements the method you expect it to before calling it, like so:
if ([self.delegate respondsToSelector:#selector(selectedCell:)]) {
[self.delegate selectedCell:cellTitle];
}
Bear with me on this one.
I have an iphone application. It is a questionnaire application. There are several types of question, some have a slider, some have text input etc. I have developed a view controller for each type of question.
Two example types of question controllers are: TextInputQuestionViewController and SliderQuestionViewController.
I have a rootViewcontroller named QuestionnaireViewController. This is defined as follows:
#import <UIKit/UIKit.h>
#import "JSONKit.h";
#import "dbConnector.h"
#import "SliderQuestionViewController.h";
#import "TextInputQuestionViewController.h";
#import "MainMenuProtocol.h";
#interface QuestionnaireViewController : UIViewController {
NSDictionary* questions;
NSMutableArray* questionArray;
NSMutableArray* answerArray;
dbConnector* db;
SliderQuestionViewController* currQ; //need to create a generic var
TextInputQuestionViewController* currQ;
NSInteger currQNum;
NSString* qaTitle;
NSString* secId;
id<MainMenuProtocol>delegate;
}
#property(nonatomic, retain) NSDictionary* questions;
#property(nonatomic, retain) NSMutableArray* questionArray;
#property(nonatomic, retain) NSMutableArray* answerArray;
#property(nonatomic, retain) dbConnector* db;
#property(nonatomic, retain) SliderQuestionViewController* currQ;
#property(nonatomic, retain) TextInputQuestionViewController* currTI;
#property(nonatomic) NSInteger currQNum;
#property(nonatomic, retain) NSString* qaTitle;
#property(nonatomic, retain) NSString* secId;
#property(nonatomic, retain) id <MainMenuProtocol> delegate;
-(void) setQuestions;
-(void) startQuestion:(NSInteger)index isLast:(BOOL)last;
-(void) loadQuestions;
-(void) initialise;
-(void) finishQuestionnaire:(id)sender;
-(void) switchViews:(id)sender;
#end
#import "QuestionnaireViewController.h"
#import "dbConnector.h"
#import "ASIHTTPRequest.h"
#import "JSONKit.h";
#import "Answer.h";
#implementation QuestionnaireViewController
#synthesize questions, questionArray, db, currQ, currQNum, answerArray, qaTitle, secId, delegate;
-(void)viewDidLoad{
[self initialise];
answerArray = [[NSMutableArray alloc]init];
[super viewDidLoad];
self.title = qaTitle; //set to whatever section is
}
-(void) initialise {
currQNum = 0;
[self loadQuestions];
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:#"Start" style:UIBarButtonItemStylePlain target:self action:#selector(switchViews:)];
self.navigationItem.rightBarButtonItem = anotherButton;
}
-(void) loadQuestions {
db = [[dbConnector alloc]init];
//code to initialise view
[db getQuestions:secId from:#"http://dev.speechlink.co.uk/David/get_questions.php" respondToDelegate:self];
}
//called when questions finished loading
//stores dictionary of questions
- (void)requestFinished:(ASIHTTPRequest *)request
{
NSData *responseData = [request responseData];
NSString *json = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSDictionary *qs = [json objectFromJSONString];
self.questions = qs;
[json release];
[qs release];
[self setQuestions];
}
//assigns JSON to question objects
-(void) setQuestions {
questionArray = [[NSMutableArray alloc] init];
for (NSDictionary *q in self.questions) {
/* Create Question object and populate it */
id question;
if([[q objectForKey:#"type"] isEqualToString:#"Slider"]){
question = [[SliderQuestionViewController alloc]init];
//set min max values
}else if([[q objectForKey:#"type"] isEqualToString:#"Option"]){
}else if([[q objectForKey:#"type"] isEqualToString:#"TextInput"]){
question = [[TextInputQuestionViewController alloc]init];
}else if([[q objectForKey:#"type"] isEqualToString:#"ImagePicker"]){
}else{
//comments
}
//if else to create appropriate view controller - NEED to identify question type
[question setQuestionId:[q objectForKey:#"questionId"] withTitle:[q objectForKey:#"question"] number:[q objectForKey:#"questionNumber"] section:[q objectForKey:#"sectionId"] questionType: [q objectForKey:#"type"]];
/* Add it to question (mutable) array */
[questionArray addObject:question];
[question release];
}
}
-(void) startQuestion:(NSInteger)index isLast:(BOOL)last{
//currQ = [[QuestionViewController alloc]init];
currQ = [questionArray objectAtIndex:index];
//push currQ onto navigationcontroller stack
[self.navigationController pushViewController:currQ animated:YES];
[currQ addButton:self isLast: last];
}
//pushes new view onto navigation controller stack
-(void) switchViews:(id)sender{
Answer* ans = currQ.question.answer;
ans.questionId = currQ.question.qId;
ans.entryId = #"1";//temporary;
if(currQNum < [questionArray count] - 1){
if(currQNum > 0){
//if else for different input types
NSString* qt = currQ.question.qType;
if([qt isEqualToString:#"Slider"]){
ans.answer = currQ.sliderLabel.text;
}else if([qt isEqualToString:#"Option"]){
}else if([qt isEqualToString:#"TextInput"]){
//NSLog(#"%#", currQ.inputAnswer);
ans.answer = currQ.inputAnswer.text;
}else if([qt isEqualToString:#"ImagePicker"]){
}else{
}
[answerArray addObject: ans];
[ans release];
}
[self startQuestion:currQNum isLast:FALSE];
currQNum++;
}else{
ans.answer = currQ.sliderLabel.text;
[answerArray addObject: ans];
//store data temporarily - section finished
[self startQuestion:currQNum isLast:TRUE];
currQNum++;
}
[ans release];
}
-(void) finishQuestionnaire:(id)sender{
//go back to main manual
//if else statement for answers
NSString* answ = currQ.sliderLabel.text;
[answerArray addObject: answ];
[delegate finishedSection:answerArray section:secId];
[answ release];
[self.navigationController popToRootViewControllerAnimated:YES];
}
- (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.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.questions = nil;
self.currQ = nil;
[super viewDidUnload];
}
//hide back button in navigation bar
- (void) viewWillAppear:(BOOL)animated{
self.navigationItem.hidesBackButton = YES;
}
- (void)dealloc {
[currQ release];
[db release];
[questionArray release];
[questions release];
[super dealloc];
}
#end
the problematic lines with the above are in the switchViews function. I need to make the answer equal to the specific input component in that question view (slider value, text input value). So I need to make currQ a type that can be instantiated using any view controller.
I therefore need a generic variable to hold the current question. currQ holds the current question, but at the moment is of type SliderQuestionViewController. I tried to change this to id, but it throws a load of "Request For member...not a structure of union" and also a load of misassigned pointer issues.
Let me know if you need more code.
This reads like you want a pointer for a UIViewController, so just use that as the type. Then you can cast it down to whatever subclass you like later. For example:
-(void)myAction:(UIViewController *)vc {
SpecialViewController *svc = (SpecialViewController *)vc;
...
}
In your case, declare
UIViewController* currQ;
and then cast it as needed in the implementation to access the different properties and methods of your two subclasses.
If you're looking for a 'generic' variable, you should be able to use id. Make sure you don't define the type as id*, the asterisk should not be present.
A better idea, though, is to create a superclass for your question viewcontrollers. Create a superclass called QuestionViewController that inherits from UIViewController and have the Slider and TextInput (and any others) inherit from QuestionViewController. Then you can define your variable as: QuestionViewController* currQ; You can put any common functionality in that superclass as well and eliminate duplication.
I have an nsarray that when I NSLog it from one of my methods (inside WorkOutList.m) I can see its contents, but when I try to look inside it from a different method inside WorkOutList.m it seems to be empty. I am aware that my memory management needs some work, could anyone help explain whats happening here?
I am using popViewControllerAnimated:YES to return the view from a tableView back to a view controller, but just before I do that I set my array in a method inside WorkOutList. When I NSLog that array from that same method I am returned results, however when i NSLog it from else where it is returned empty.
I have been told that it might be the viewDidLoad method where the array is init, but that the other array in that method customWorkouts still retains its data. So i dunno, any explanation would be really helpful. I want this to work, but I also really want to understand it so I can get on with coding correctly.
Thanks so much!
WorkOutList.h
#import <UIKit/UIKit.h>
#interface WorkOutList : UIViewController {
NSManagedObjectContext *managedObjectContext;
NSMutableArray *customWorkouts;
NSArray *passedWorkout;
}
#property(nonatomic, retain)NSManagedObjectContext *managedObjectContext;
#property(nonatomic, retain)NSMutableArray *customWorkouts;
#property(nonatomic, retain)NSArray *passedWorkout;
-(IBAction)customWorkouts:(id)sender;
-(void)passWorkoutBack:(NSArray *)workout;
#end
WorkOutList.m
#implementation WorkOutList
#synthesize managedObjectContext, customWorkouts, passedWorkout;
- (void)viewDidLoad {
[self setupContext];
NSLog(#"View Did Load");
customWorkouts = [[NSMutableArray alloc] init];
passedWorkout = [[NSArray alloc] init];
[super viewDidLoad];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self fetchWorkoutList];
NSLog(#"View will Appear");
NSLog(#"Array from View Will Appear : %#", passedWorkout);
}
-(IBAction)customWorkouts:(id)sender{
CoCoachAppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
SelectedWorkout *selectedWorkout = [[SelectedWorkout alloc] initWithStyle:UITableViewStyleGrouped];
[selectedWorkout recieveNeededData:customWorkouts];
[appDelegate.practiceNavController pushViewController:selectedWorkout animated:YES];
[selectedWorkout release];
}
-(void)passWorkoutBack:(NSArray *)workout{
passedWorkout = workout;
[passedWorkout retain];
}
- (void)dealloc {
[super dealloc];
}
SelectedWorkout.h
#import <UIKit/UIKit.h>
#interface SelectedWorkout : UITableViewController {
NSMutableArray *workoutListForTable;
}
#property(nonatomic,retain)NSMutableArray *workoutListForTable;
-(void)recieveNeededData:(NSMutableArray *)workoutList;
#end
SelectedWorkout.m(aside from all the stuff to set up the tableView)
#implementation SelectedWorkout
#synthesize workoutListForTable;
-(void)recieveNeededData:(NSMutableArray *)workoutList{
if (workoutListForTable != workoutList) {
workoutListForTable = workoutList;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:YES];
CoCoachAppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
WorkOutList *workoutListView = [[WorkOutList alloc]init];
[workoutListView passWorkoutBack:[workoutListForTable objectAtIndex:indexPath.row]];
[appDelegate.practiceNavController popViewControllerAnimated:YES];
}
- (void)dealloc {
[workoutListForTable release];
[super dealloc];
}
NSLog(#"other table : %#", workoutListForTable);
[workoutListForTable retain];
}
In this line:
passedWorkout = [[NSArray alloc] init];
You're creating an immutable array with nothing in it. What do you want it to contain?
It looks to me that although you are initializing your array with or so I assume, since on the other line you are only allocating an empty array.
[self fetchWorkoutList]
You are resetting it here every time:
[workoutListView passWorkoutBack:[workoutListForTable objectAtIndex:indexPath.row]];
As a note here:
-(void)passWorkoutBack:(NSArray *)workout{
passedWorkout = workout;
[passedWorkout retain];
}
You have the property passedWorkout as retain already, however you need to call it on self
-(void)passWorkoutBack:(NSArray *)workout{
self.passedWorkout = workout;
}