Can't write in a .plist - iphone

Question

I have a little app that have by default youtube as homepage. You can change it in a little menu, but it doesn't work and I don't know why.
Here's the code
viewController
.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController{
IBOutlet UIWebView *webView;
}
#property (retain, nonatomic) NSArray *array;
#property (retain, nonatomic) NSString *string1;
-(NSString *) dataFilePath;
- (IBAction)settings:(id)sender;
- (IBAction)home:(id)sender;
#end
.m
#import "ViewController.h"
#import "settings.h"
#implementation ViewController
#synthesize array;
#synthesize string1;
- (void)viewDidLoad
{
[super viewDidLoad];
if ([string1 isEqual:#"youtube"]) {
NSMutableArray *Array = [[NSMutableArray alloc] init];
[Array addObject:#"http://www.youtube.com"];
[Array writeToFile:[self dataFilePath] atomically:YES];
}
NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
array = [[NSArray alloc] initWithContentsOfFile:filePath];
}
NSString *string = [NSString stringWithString:[array objectAtIndex:0]];
[webView loadRequest:[[NSURLRequest alloc] initWithURL:[[NSURL alloc] initWithString:string]]];
}
-(NSString *) dataFilePath
{
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [path objectAtIndex:0];
return [documentDirectory stringByAppendingPathComponent:#"url.plist"];
string1 = #"youtube";
}
- (IBAction)settings:(id)sender {
settings *NView = [[settings alloc] initWithNibName:nil bundle:nil];
[self presentModalViewController:NView animated:YES];
}
- (IBAction)home:(id)sender {
NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
array = [[NSArray alloc] initWithContentsOfFile:filePath];
}
NSString *string = [NSString stringWithString:[array objectAtIndex:0]];
NSLog(#"%#\n",string);
[webView loadRequest:[[NSURLRequest alloc] initWithURL:[[NSURL alloc] initWithString:string]]];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#end
Settings //here's the menu where I can change the homepage
.h
#import <UIKit/UIKit.h>
#import "ViewController.h"
#interface settings : UIViewController{
ViewController *viewCont;
IBOutlet UITextField *field;
}
-(IBAction)back:(id)sender;
- (IBAction)setHP:(id)sender;
#end
.m
#import "settings.h"
#import "ViewController.h"
#implementation settings
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib
}
- (void)viewDidUnload
{
field = nil;
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
-(IBAction)back:(id)sender{
[self dismissModalViewControllerAnimated:YES];
}
- (IBAction)setHP:(id)sender {
NSMutableArray *Array = [[NSMutableArray alloc] init];
[Array addObject:field.text];
[Array writeToFile:[viewCont dataFilePath] atomically:YES];
[viewCont.string1 initWithString:#"other" ];
NSLog(#"%#\n", viewCont.string1);// HERE XCODE SAYS string1 = null!!! WHY?
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end
So anyone knows what am I doing wrong? Please help me, I have searched around the web for 4 days and I didn't find anything!

Answer 1

I don't understand well your problem but i notice that you are not initializing viewCont in the setHP: action.
try to add this line:
ViewController *viewCont=[[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
just before
[viewCont.string1 initWithString:#"other" ];