reset a ViewController without quit the app...

[jordanmeir]

can i reset a ViewController without quit the app
because i need to reset all data...

[Domele]

Create a reset method that sets all your data to 0, nil, whatever you need and call it when you need to reset.

[jordanmeir]

if i do this action too many times the app is crash:

int randomNumber = arc4random() % 10;
	switch (randomNumber) {
break;
		default:
			break;
	}

if after any time i reset the viewController is not crashing...

[Domele]

What is the purpose of that switch statement? And is this the whole method? Are you doing anything with randomNumber?

[jordanmeir]

yes i use randomNumber... and when i using too many times my app is crash

[Domele]

What's the crash message? Also, you didn't answer my question about the switch statement.

[jordanmeir]

i dont know i found this code in other forum...
this code is not good ?

[baja_yu]

Tat's just an empty switch. How do you expect us to tell you what's wrong? And how can you not know what the error is in the crash log, don' you see the Console?!

[jordanmeir]

sometimes is crash when i do the randomNumber
and some times is crash when i click reset button (reset the nsstring to '0')

look on thus log:

randomNumber1
2011-11-24 20:53:08.851 app[32677:207] randomNumber2
2011-11-24 20:53:14.955 app[32677:207] randomNumber3
2011-11-24 20:53:22.367 app[32677:207] Reachability Flag Status: -R ------- networkStatusForFlags
2011-11-24 20:53:22.370 app[32677:207] ResetButton
2011-11-24 20:53:23.843 app[32677:207] randomNumber1
2011-11-24 20:53:27.836 app[32677:207] randomNumber2
2011-11-24 20:53:30.108 app[32677:207] randomNumber3
2011-11-24 20:53:38.693 app[32677:207] Reachability Flag Status: -R ------- networkStatusForFlags
sharedlibrary apply-load-rules all
Current language:  auto; currently objective-c

it was crashed when i pushed the 'ResetButton'

what mean the last row ?

[baja_yu]

Nothing important. Unless we see a crash log (which that wasn't) or the whole source for that method, we can't help you.

[jordanmeir]

ok, can you give me an other randomNumber command ?

because i think this randomNumber is crashing

[baja_yu]

It's not. The one you have is fine. Your problem is elsewhere.

[jordanmeir]

after any crash he show my this:

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

[Domele]

Also not the problem. Like baja said, no crash log, no code, no help.

[jordanmeir]

so, thanks for everybody
i will find the crash code...

[Domele]

Just a tip, if you are using the latest Xcode, you need to activate the console to see crash messages. I believe the shortcut for that is command shift c.

[jordanmeir]

thanks...
but i found the crash error...
the error:

UIImage *img = [UIImage imageNamed:@"123.png"];
		[Button setImage:img forState:UIControlStateNormal];
		[img release];

the reset data action:

[Button setImage:nil forState:UIControlStateNormal];

it work but if i do this few times it crash
do you have an other way to chango the image/BG of button ??

[baja_yu]

That's not the problem. The problem is that you are releasing an autoreleased object. imageNamed returns an autoreleased object which you should not explicitly release. I suggest you read the Memory Management Programming Guide from the documentation: Loading…

[jordanmeir]

the crash bug was fix
i change the old code to this:

[button  setBackgroundImage:[[UIImage imageNamed:@"123.png"] stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0] forState:UIControlStateNormal];

and is not crashing

[jordanmeir]

can you give me an other randomNumber ?
because i when i press again it have a chance to show me the last "case" again.
and i don't want this...


I want him to show me that one time !

[baja_yu]

That's what random generators do. It doesn't mean that each time you generate you'll get a number different from all the previously generated. If you want that, then you need to keep track of all the numbers and keep generating until you get one that hasn't been generated yet. Since you might be looking for a sequence of numbers (0-9) in random order, it might be more efficient to create an array with those numbers in it and shuffle the array.

[jordanmeir]

can you give me an example how to do this ?
i have no idea

[baja_yu]

Use an array, each time you generate a number loop through the array to see if that number is already in the array, if it isn't, add it to the array and use it, if it is, generate a new one and re-check.

[jordanmeir]

thanks i will try