Problem with SIngleton Class
- by zp26
Hi,
I have a prblem with my code.
I have a viewController and a singleton class.
When i call the method readXml and run a for my program update the UITextView.
When i call the clearTextView method the program exit with EXC_BAD_ACCESS.
The prblem it's the name of the variable position. This is invalid but i don't change anything between the two methods.
You have an idea?
My code:
#import "PositionIdentifierViewController.h"
#import "WriterXML.h"
#import "ParserXML.h"
#define timeToScan 0.1
@implementation PositionIdentifierViewController
@synthesize accelerometer;
@synthesize actualPosition;
@synthesize actualX;
@synthesize actualY;
@synthesize actualZ;
-(void)updateTextView:(NSString*)nomePosizione
{
NSString *string = [NSString stringWithFormat:@"%@",nomePosizione];
textEvent.text = [textEvent.text stringByAppendingString:@"\n"];
textEvent.text = [textEvent.text stringByAppendingString:string];
}
-(IBAction)clearTextEvent{
textEvent.text = @"";
//with this for my program exit
for(int i=0; i<[[sharedController arrayPosition]count]; i++){
NSLog(@"sononelfor");
Position *tempPosition = [[Position alloc]init];
tempPosition = [[sharedController arrayPosition]objectAtIndex:i];
[self updateTextView:(NSString*)[tempPosition name]];
}
}
-(void)readXml{
if([sharedController readXml]){
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Caricamento Posizioni" message:@"Caricamento effettuato con successo" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil];
[alert show];
[alert release];
NSString *string = [NSString stringWithFormat:@"%d", [[sharedController arrayPosition]count]];
[self updateTextView:(NSString*)string];
//with only this the program is ok
for(int i=0; i<[[sharedController arrayPosition]count]; i++){
NSLog(@"sononelfor");
Position *tempPosition = [[Position alloc]init];
tempPosition = [[sharedController arrayPosition]objectAtIndex:i];
[self updateTextView:(NSString*)[tempPosition name]];
}
}
else{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Caricamento Posizioni" message:@"Caricamento non riuscito" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil];
[alert show];
[alert release];
}
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
sharedController = [SingletonController sharedSingletonController];
actualPosition = [[Position alloc]init];
self.accelerometer = [UIAccelerometer sharedAccelerometer];
self.accelerometer.updateInterval = timeToScan;
self.accelerometer.delegate = self;
actualX=0;
actualY=0;
actualZ=0;
[self readXml];
}
- (void)dealloc {
[super dealloc];
[actualPosition dealloc];
[super dealloc];
}
@end
#import "SingletonController.h"
#import "Position.h"
#import "WriterXML.h"
#import "ParserXML.h"
#define standardSensibility 2
#define timeToScan .1
@implementation SingletonController
@synthesize arrayPosition;
@synthesize arrayMovement;
@synthesize actualPosition;
@synthesize actualMove;
@synthesize stopThread;
+(SingletonController*)sharedSingletonController{
static SingletonController *sharedSingletonController;
@synchronized(self) {
if(!sharedSingletonController){
sharedSingletonController = [[SingletonController alloc]init];
}
}
return sharedSingletonController;
}
-(BOOL)readXml{
ParserXML *newParser = [[ParserXML alloc]init];
if([newParser startParsing:(NSString*)@"filePosizioni.xml"]){
[arrayPosition addObjectsFromArray:[newParser arrayPosition]];
return TRUE;
}
else
return FALSE;
}
-(id)init{
self = [super init];
if (self != nil) {
arrayPosition = [[NSMutableArray alloc]init];
arrayMovement = [[NSMutableArray alloc]init];
actualPosition = [[Position alloc]init];
actualMove = [[Movement alloc]init];
stopThread = FALSE;
}
return self;
}
-(void) dealloc {
[super dealloc];
}
@end
