Need help with copying text from UITextView to an array.

cye · 03-18-2010, 06:21 PM

when i run it in the simulator i always get terminating_due_to uncaught_exception, this block of code seems to be the problem.

qInput and aInput are UITextViews
and q and a are mutable arrays

Code:

- (IBAction)inputPressed:(id)sender
{
        int i = 1;
	q = [[NSMutableArray alloc]initWithCapacity:20];
	a = [[NSMutableArray alloc]initWithCapacity:20];

	[[q objectAtIndex:i]setText:qInput.text];
	[[a objectAtIndex:i]setText:aInput.text];	
	
	
	i++;
}

whats wrong?

canzhi

Batman · 03-18-2010, 10:00 PM

Quote:

Originally Posted by cye

when i run it in the simulator i always get terminating_due_to uncaught_exception, this block of code seems to be the problem.

qInput and aInput are UITextViews
and q and a are mutable arrays

Code:

- (IBAction)inputPressed:(id)sender
{
        int i = 1;
	q = [[NSMutableArray alloc]initWithCapacity:20];
	a = [[NSMutableArray alloc]initWithCapacity:20];

	[[q objectAtIndex:i]setText:qInput.text];
	[[a objectAtIndex:i]setText:aInput.text];	
	
	
	i++;
}

whats wrong?

canzhi

I'm not sure about this, but it might be since you are allocated and init them, all 20 objects are = nil. You can't try to setText of nil. Instead, do this:

Code:

 if (q == nil) {
	q = [[NSMutableArray alloc]initWithCapacity:20];
} if (a == nil) {
       	a = [[NSMutableArray alloc]initWithCapacity:20];
}

cye · 03-18-2010, 10:45 PM

good point...but it still doesnt work.
ive found out that the code stops at this line

Code:

	[[q objectAtIndex:i]setText:qInput.text];

javaconvert · 03-18-2010, 11:17 PM

Quote:

Originally Posted by cye

good point...but it still doesnt work.
ive found out that the code stops at this line

Code:

	[[q objectAtIndex:i]setText:qInput.text];

Well if you only want to copy the text from your UITextView's, why do you need an array? Are you keeping a history of everything you copy? Sorry if I missed something, it just seems like you're overcomplicating things.

Son of a Beach · 03-19-2010, 01:13 AM

[q objectAtIndex:i] doesn't exist, until you add something to the array.

It doesn't look like you've added anything to the array, and yet you're trying to access objects in it.

cye · 03-19-2010, 09:53 AM

Quote:

Originally Posted by Son of a Beach

[q objectAtIndex:i] doesn't exist, until you add something to the array.

It doesn't look like you've added anything to the array, and yet you're trying to access objects in it.

so how do i add (20) objects to the array?

harrytheshark · 03-19-2010, 10:11 AM

with addObject:

cye · 03-19-2010, 06:44 PM

Quote:

Originally Posted by harrytheshark

with addObject:

ok i added objects and i initialized the array but im still getting "___TERMINATING_DUE_TO_UNCAUGHT_EXCEPTION___"

is there something wrong with this?
q and a are arrays and qInput and aInput are both UITextViews, and i is an int

Code:

[[q objectAtIndex:i]setText:qInput.text];
[[a objectAtIndex:i]setText:aInput.text];

whats wrong? ahh

Son of a Beach · 03-19-2010, 10:21 PM

Quote:

Originally Posted by cye

ok i added objects and i initialized the array but im still getting "___TERMINATING_DUE_TO_UNCAUGHT_EXCEPTION___"

is there something wrong with this?
q and a are arrays and qInput and aInput are both UITextViews, and i is an int

Code:

[[q objectAtIndex:i]setText:qInput.text];
[[a objectAtIndex:i]setText:aInput.text];

whats wrong? ahh

Show us the code. We can't comment on code we've not seen. Show us the relevant code now that you're adding objects to he array.

cye · 03-19-2010, 11:40 PM

Quote:

Originally Posted by Son of a Beach

Show us the code. We can't comment on code we've not seen. Show us the relevant code now that you're adding objects to he array.

Code:

- (IBAction)toReviewPressed:(id)sender
{
	if (q == nil) {
		q = [[NSMutableArray alloc]init];
	} if (a == nil) {
       	a = [[NSMutableArray alloc]init];
	}

        objq = @"";
	obja = @"";
	
	[q addObject:objq];
	[a addObject:obja];
	
	
	i = 1;
}


- (IBAction)inputPressed:(id)sender
{	
	qText = [[NSString alloc] initWithFormat:qInput.text];
	aText = [[NSString alloc] initWithFormat:aInput.text];
	
	
	[[q objectAtIndex:i]setText:(NSString *) qText];
	[[a objectAtIndex:i]setText:(NSString *) aText];
	
	i++;
}

i have objq, obja, q, a, and i declared in the .h file

cye · 03-19-2010, 11:56 PM

Quote:

Originally Posted by cye

Code:

- (IBAction)toReviewPressed:(id)sender
{
	if (q == nil) {
		q = [[NSMutableArray alloc]init];
	} if (a == nil) {
       	a = [[NSMutableArray alloc]init];
	}

        objq = @"";
	obja = @"";
	
	[q addObject:objq];
	[a addObject:obja];
	
	
	i = 1;
}


- (IBAction)inputPressed:(id)sender
{	
	qText = [[NSString alloc] initWithFormat:qInput.text];
	aText = [[NSString alloc] initWithFormat:aInput.text];
	
	
	[[q objectAtIndex:i]setText:(NSString *) qText];
	[[a objectAtIndex:i]setText:(NSString *) aText];
	
	i++;
}

i have objq, obja, q, a, and i declared in the .h file

2010-03-19 22:55:15.299 FlashCards[3307:20b] *** -[NSCFString setText:]: unrecognized selector sent to instance 0x4030
2010-03-19 22:55:15.301 FlashCards[3307:20b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFString setText:]: unrecognized selector sent to instance 0x4030'
2010-03-19 22:55:15.303 FlashCards[3307:20b] Stack: (
807902715,
2520190523,
808284155,
807854166,
807706786,
10641,
814709201,
815110321,
815119058,
815114270,
814813151,
814722763,
814748641,
839148405,
807687520,
807683624,
839142449,
839142646,
814752238
)
Current language: auto; currently objective-c
(gdb)

Son of a Beach · 03-20-2010, 06:08 AM

The error message is quite clear. The objcects you're adding to the array are strings, you're sending the NSString objects a SetText message. NSString doesn't recognize any such method.

What is I you're actually trying to do? The code doesn't really make sense as it is.

Son of a Beach · 03-20-2010, 06:12 AM

PS. You could replace "setText:" with "addObject:" but without knowing what you're trying to achieve I can't say if that's the correct solution or not.

(and remove the addObject limes from the other method)

cye · 03-20-2010, 01:22 PM

Quote:

Originally Posted by Son of a Beach

PS. You could replace "setText:" with "addObject:" but without knowing what you're trying to achieve I can't say if that's the correct solution or not.

(and remove the addObject limes from the other method)

basically, im trying to save text from uitextview into an array

cye · 03-20-2010, 01:30 PM

Quote:

Originally Posted by cye

basically, im trying to save text from uitextview into an array

ok so i replaced setText with addObject and removed addObject from the other lines and im not getting that error message anymore, but in the debugger it still says that q has 0 objects........

cye · 03-20-2010, 02:05 PM

Quote:

Originally Posted by cye

ok so i replaced setText with addObject and removed addObject from the other lines and im not getting that error message anymore, but in the debugger it still says that q has 0 objects........

i got it! thanks very much for everyone's help!

sebastien · 11-18-2010, 02:17 AM

I had the same problem, I used SetText and it worked. Thanks