Storing strings and show them randomly...

[Lindberg]

SOLVED! Thanks for all the help!


Hi!

First of all, im totally new to this forum. Please don't just answer my question with: SEARCH!
I'm looking for a tutorial or some code pieces to solve my problem.

I'm developing an iOS app in Xcode. I've got two buttons and one label. I want to do this: when one button is pressed, the label will be replaced with a sentence, i want to store many different sentences so that the same won't show up more than twice. There should be another set of sentences showing up if you press the other button.
This is a truth or dare game.

So my question is: how can i store two sets of sentences? How can i make the button show random sentences?

Sorry if my explanation wasn't that good...

[QuantumDoja]

You can use an array, pseudocode:

array = [Array alloc]
[array addObject:@"first sentence"];
[array addObject:@"second sentence"];
[array addObject:@"third sentence"];

Then in your button press code, again pseudocode:

int randomNumber = random form 0 to array.length;
lblText.Text = [array objectAtIndex:randomNumber];

[TTStu]

You could also add each phrase to the array twice, and remove each one that you show... hence, each one won't show up more than twice

[Krillere]

If you store the sentences in a text file, do like this:

NSString *contentString = [NSString stringWithFile:[[NSBundle mainBundle] pathForResource:@"File" ofType:@"txt"] encoding:NSUTF8StringEncoding error:nil];

NSArray *sentences = [contentString componentsSeperatedBy:@"\n"];

int rnd = arc4random() % sentences.count+1;

[label setText:[sentences objectAtIndex:rnd]];

Just wrote it out of my head, but that should do the trick. :-)
Note: You might want to read the NSArray and NSString at app-startup, and then just find the random int when clicked the button.

[Lindberg]

Thanks for all the replies!
I hope that my app will work soon!

[Lindberg]

Hi again!

I was building my app and got no errors, but in the iOS Simulator my app won't work. It's just black after pressing the icon.
When the iOS Simulator runs Xcode automatically goes to my main.m and shows a green message under this codeline:

@autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}

The green message says: Thread 1: Program received signal: "SIGABRT"

I've searched Google but didn't find anything useful...

[QuantumDoja]

My main looks just like this:

#import <UIKit/UIKit.h>

int main(int argc, char *argv[])
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    int retVal = UIApplicationMain(argc, argv, nil, nil);
    [pool release];
    return retVal;
}

[Lindberg]

Originally Posted by QuantumDoja

My main looks just like this:

#import <UIKit/UIKit.h>

int main(int argc, char *argv[])
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    int retVal = UIApplicationMain(argc, argv, nil, nil);
    [pool release];
    return retVal;
}

I'm just getting alot of erros about NSAutoreleasePool being unavailable when i'm using that main.

[QuantumDoja]

Have you cleaned your project, and are you definitely sure you're building the correct target?

[Lindberg]

Originally Posted by QuantumDoja

Have you cleaned your project, and are you definitely sure you're building the correct target?

Hmm, how do I clean my project?

And I'm just clicking run in the top left hand corner. Sorry if I ask weird questions, this is my first iOS app

[Krillere]

You should try creating a new project. Something might have gone wrong with the 'old' one. :-)

- BTW, are you by any chance Danish?

[Lindberg]

Originally Posted by Krillere

You should try creating a new project. Something might have gone wrong with the 'old' one. :-)

- BTW, are you by any chance Danish?

Okay, will try.

No, but a good guess, I'm Swedish
How could you guess?

[TTStu]

What version are you running of xcode?

4.2/ios5 needs the @autorelease construct that you first used, BUT you must also #import "AppDelegate.h" at the top too.

Older versions, use QuantumDojas code, BUT replace the last nil with @"AppDelegate"

I think the former is what youre after...

[TTStu]

Presuming your app delegate is called AppDelegte, otherwise use the correct name...

[Krillere]

I know someone called Lindberg, and I'm Danish :-)

- Try uploading the project folder (.zip it) and give us the link. Someone might be able to fix it.

[Lindberg]

Originally Posted by TTStu

What version are you running of xcode?

4.2/ios5 needs the @autorelease construct that you first used, BUT you must also #import "AppDelegate.h" at the top too.

Older versions, use QuantumDojas code, BUT replace the last nil with @"AppDelegate"

I think the former is what youre after...

I run Xcode 4.2 and AppDelegate.h is "imported" and that is the correct name of my delegate..

[Lindberg]

Originally Posted by Lindberg

I run Xcode 4.2 and AppDelegate.h is "imported" and that is the correct name of my delegate..

With a little help from the debugger in came clear that the AdBanner I added to my app didn't work that well, so I removed it for now. Now i got other problems, but i will try to solve them myself before asking here
Thanks for the help anyway!