[B]How to open a file with a TableView populated from a .plist[/B]

Ogispert · 05-27-2011, 10:06 AM

Hi everyone.

Let's see if I can explain myself.

I have some table views that I've populated with info from a .plist file. There I have no problems, since all the rows and subviews look fine.

At the end, the object is that each row has to open a different .txt file in a text view.

I've tried to do the same thing that I did in another project where the table view was populated from an array:

Code:

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSString *filepath = [[NSBundle mainBundle] pathForResource:textSelected ofType:@"txt"];
    if (filepath) {
        NSString *myText = [NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:NULL];  
        if (myText) {  
            Article.text = myText;  
        }  
    }
}

Sadly, it isn't working.

The problem is that now each row opens the same .txt file (The first one of the list/bundle).

Also I have some rows in the last table view that have the same name, so how can they open a different file?

Ex. of my .plist
Rows
-item 0
---Children
-----Item 0
-------Title 1A (Should open file1.txt)
---Title 1
-Item 1
---Children
-----Item 0
-------Title 1A (Should open file2.txt)
---Title 2

Do I have to use some code like “If, else”?

Could you help me please?

Thank’s in advance.

iSDK · 05-27-2011, 10:31 AM

Post the method where you choose what txt file to open.

Quote:

Originally Posted by Ogispert

Hi everyone.

Let's see if I can explain myself.

I have some table views that I've populated with info from a .plist file. There I have no problems, since all the rows and subviews look fine.

At the end, the object is that each row has to open a different .txt file in a text view.

I've tried to do the same thing that I did in another project where the table view was populated from an array:

Code:

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSString *filepath = [[NSBundle mainBundle] pathForResource:textSelected ofType:@"txt"];
    if (filepath) {
        NSString *myText = [NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:NULL];  
        if (myText) {  
            Article.text = myText;  
        }  
    }
}

Sadly, it isn't working.

The problem is that now each row opens the same .txt file (The first one of the list/bundle).

Also I have some rows in the last table view that have the same name, so how can they open a different file?

Ex. of my .plist
Rows
-item 0
---Children
-----Item 0
-------Title 1A (Should open file1.txt)
---Title 1
-Item 1
---Children
-----Item 0
-------Title 1A (Should open file2.txt)
---Title 2

Do I have to use some code like “If, else”?

Could you help me please?

Thank’s in advance.

Ogispert · 05-27-2011, 10:38 AM

Quote:

Originally Posted by iSDK

Post the method where you choose what txt file to open.

This is my complete TextViewController:

Code:

@implementation ArticleViewController

@synthesize Article;
@synthesize textSelected;

-(id) initWithTextSelected:(NSString *) text {
    
    self.textSelected = text;
    [Article setText:@" @"];
    return self;
}

- (void)dealloc
{
    [textSelected release];
    [Article release];
    [super dealloc];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [Article setText:[self textSelected]];
    self.title = @"";
    
    [super viewDidLoad];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSString *filepath = [[NSBundle mainBundle] pathForResource:textSelected ofType:@"txt"];
    if (filepath) {
        NSString *myText = [NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:NULL];  
        if (myText) {  
            Article.text = myText;  
        }  
    }
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    self.Article = nil;
}

@end

An this is the .h file

Code:

@interface ArticleViewController : UIViewController
{
    IBOutlet UITextView *Article;
    NSString *textSelected;

}

@property (nonatomic, retain) UITextView *Article;
@property (nonatomic, retain) NSString *textSelected;

-(id) initWithTextSelected:(NSString *) text;

@end

iSDK · 05-27-2011, 10:42 AM

Firstly, I don't think the initWithTextSelected method would work as you are not actually initialising 'self.

Code:

-(id) initWithTextSelected:(NSString *) text {
    self = [super init];
    if (self) {
        self.textSelected = text;
        [Article setText:@" @"];
    }
    return self;
}

Secondly, where do you decide what the name of the .txt file that you are going to read is?

Quote:

Originally Posted by Ogispert

This is my complete TextViewController:

Code:

@implementation ArticleViewController

@synthesize Article;
@synthesize textSelected;

-(id) initWithTextSelected:(NSString *) text {
    
    self.textSelected = text;
    [Article setText:@" @"];
    return self;
}

- (void)dealloc
{
    [textSelected release];
    [Article release];
    [super dealloc];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [Article setText:[self textSelected]];
    self.title = @"";
    
    [super viewDidLoad];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSString *filepath = [[NSBundle mainBundle] pathForResource:textSelected ofType:@"txt"];
    if (filepath) {
        NSString *myText = [NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:NULL];  
        if (myText) {  
            Article.text = myText;  
        }  
    }
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    self.Article = nil;
}

@end

An this is the .h file

Code:

@interface ArticleViewController : UIViewController
{
    IBOutlet UITextView *Article;
    NSString *textSelected;

}

@property (nonatomic, retain) UITextView *Article;
@property (nonatomic, retain) NSString *textSelected;

-(id) initWithTextSelected:(NSString *) text;

@end

Ogispert · 05-27-2011, 10:55 AM

Quote:

Originally Posted by iSDK

Firstly, I don't think the initWithTextSelected method would work as you are not actually initialising 'self.

Code:

-(id) initWithTextSelected:(NSString *) text {
    self = [super init];
    if (self) {
        self.textSelected = text;
        [Article setText:@" @"];
    }
    return self;
}

Secondly, where do you decide what the name of the .txt file that you are going to read is?

In my other project, the name of the file was the same of the string, here i tried to do the same. I have no other name.

This is declared in my TableViewController:

Code:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
    }
    
	NSDictionary *dictionary = [self.tableDataSource objectAtIndex:indexPath.row];
	cell.textLabel.text = [dictionary objectForKey:@"Title"];
    
    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    
	NSDictionary *dictionary = [self.tableDataSource objectAtIndex:indexPath.row];
	
	NSArray *Children = [dictionary objectForKey:@"Children"];
	
	if([Children count] == 0) {
		
		ArticleViewController *dvController = [[ArticleViewController alloc] initWithNibName:@"ArticleViewController" bundle:[NSBundle mainBundle]];
		[self.navigationController pushViewController:dvController animated:YES];
		[dvController release];
	}
	else {
		
		RootViewController *rvController = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:[NSBundle mainBundle]];
		
		rvController.CurrentLevel += 1;
		
		rvController.CurrentTitle = [dictionary objectForKey:@"Title"];
		
		[self.navigationController pushViewController:rvController animated:YES];
		
		rvController.tableDataSource = Children;
		
		[rvController release];
	}
}

taylortm · 05-27-2011, 12:20 PM

Quote:

Originally Posted by Ogispert

Hi everyone.

At the end, the object is that each row has to open a different .txt file in a text view.

I've tried to do the same thing that I did in another project where the table view was populated from an array:

Code:

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    NSString *filepath = [[NSBundle mainBundle] pathForResource:textSelected ofType:@"txt"];
    if (filepath) {
        NSString *myText = [NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:NULL];  
        if (myText) {  
            Article.text = myText;  
        }  
    }
}

Sadly, it isn't working.

The problem is that now each row opens the same .txt file (The first one of the list/bundle).

From looking at your code, it seems like you're basically just saying:

Open the file pointed to (named by?) the variable textSelected. My guess is that you are not properly updating textSelected.

Which view controller is this code from? The Tableview? The Table Cell?

Ogispert · 05-27-2011, 12:30 PM

Quote:

Originally Posted by taylortm

From looking at your code, it seems like you're basically just saying:

Open the file pointed to (named by?) the variable textSelected. My guess is that you are not properly updating textSelected.

Which view controller is this code from? The Tableview? The Table Cell?

It comes from a table view, and is declared at the ViewController.

Another approach I'm trying is calling the .txt file from the .plist file (inserting a reference as a sting, like the titles), but again, I don't know the right code for that...