Hi everybody. I'm going crazy with this my little app... Please help me!!!
this is the source code of the app: Smoking.zip
It only saves a .dat file with an NSMutableArray. Now, the first time you will launch the app, try to click the cigarette button sometimes: Everything should working fine. Ok, now close the app, re-open it, and click again on the button. This time the app will crash with the "unrecognized selector sent to instance 0x5d18d60" error. I was sure the problem was in saving the data, because when i commented the line "[theData writeToFile:dataFilePath atomically:YES];" in the "saveData" method the error disappeared. Later i discovered that it appears again if i try to read the data from the NSMutableArray.
Please take a moment to check my project and help me, beacause i'm going crazy about that!!
Here's some code:
#import "SmokingAppDelegate.h"
#import "SmokingViewController.h"
#import "Cig.h"
@implementation SmokingAppDelegate
@synthesize window;
@synthesize viewController, dataFilePath, smokeArray;
#pragma mark -
#pragma mark Application lifecycle
- (id) init {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"a.dat"];
[self setDataFilePath:path];
NSFileManager *fileManager = [NSFileManager defaultManager];
if([fileManager fileExistsAtPath:dataFilePath]
) {
//open it and read it
NSLog(@"data file found. reading into memory");
smokeArray = [[NSMutableArray alloc] init];
NSMutableData *theData;
NSKeyedUnarchiver *decoder;
NSMutableArray *tempArray;
theData = [NSData dataWithContentsOfFile:dataFilePath];
decoder = [[NSKeyedUnarchiver alloc] initForReadingWithData:theData];
tempArray = [decoder decodeObjectForKey:@"smokeArray"];
[self setSmokeArray:tempArray];
[decoder finishDecoding];
[decoder release];
} else {
NSLog(@"no file found. creating empty array");
smokeArray = [[NSMutableArray alloc] init];
[smokeArray insertObject:[[NSNumber alloc] initWithInt:0] atIndex:0];
}
// [self logArrayContents];
return self;
}
- (void) logArrayContents {
for(int j = 1; j < [smokeArray count]; j++) {
int f = [[[smokeArray objectAtIndex:j] num] intValue];
NSLog(@"%i. - %d", j, f);
}
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// Add the view controller's view to the window and display.
[window addSubview:viewController.view];
[window makeKeyAndVisible];
return YES;
}
-(void) saveData {
NSMutableData *theData;
NSKeyedArchiver *encoder;
theData = [NSMutableData data];
encoder = [[NSKeyedArchiver alloc] initForWritingWithMutableData:theData];
[encoder encodeObject:smokeArray forKey:@"smokeArray"];
[encoder finishEncoding];
[theData writeToFile:dataFilePath atomically:YES];
[encoder release];
NSLog(@"Saved");
}
#pragma mark -
#pragma mark Memory management
- (void)dealloc {
[viewController release];
[window release];
[dataFilePath release];
[smokeArray release];
[super dealloc];
}
@end
#import "SmokingViewController.h"
#import "SmokingAppDelegate.h"
#import "Cig.h"
@implementation SmokingViewController
@synthesize label;
- (void)viewDidLoad {
[super viewDidLoad];
SmokingAppDelegate *mainDelegate = (SmokingAppDelegate *)[[UIApplication sharedApplication] delegate];
//controlla se il giorno è lo stesso rispetto a quello dell'ultima sigaretta fumata
if ([mainDelegate.smokeArray count] > 1) {
Cig *oldCig = [mainDelegate.smokeArray lastObject];
NSArray *tempArray = [self quando];
if ( [[tempArray objectAtIndex:0] intValue]==[[oldCig.dat objectAtIndex:0] intValue]
&& [[tempArray objectAtIndex:1] intValue]==[[oldCig.dat objectAtIndex:1] intValue]
&& [[tempArray objectAtIndex:2] intValue]==[[oldCig.dat objectAtIndex:2] intValue]
) {
N = [oldCig.num intValue];
}
else {
N = 0;
}
[oldCig release];
[tempArray release];
}
//scrive quante sigarette si sono fumate oggi
label.text = [NSString stringWithFormat: @"Today you smoked %d cigarettes",N];
}
- (IBAction) smoke:(UIButton * ) button {
SmokingAppDelegate *mainDelegate = (SmokingAppDelegate *)[[UIApplication sharedApplication] delegate];
NSLog(@"L'array contiene %d sigarette", [mainDelegate.smokeArray count]-1);
N += 1;
[self addNewCigToArray];
[mainDelegate logArrayContents];
[mainDelegate saveData];
label.text = [NSString stringWithFormat: @"Today you smoked %d cigarettes",N];
}
- (void) addNewCigToArray {
//NSLog(@"new cigarette smoked");
SmokingAppDelegate *mainDelegate = (SmokingAppDelegate *)[[UIApplication sharedApplication] delegate];
Cig *newCig = [[Cig alloc] init];
[newCig setDat:[self quando]];
[newCig setNum:[[NSNumber alloc] initWithInt:N]];
[mainDelegate.smokeArray addObject:newCig];
[newCig release];
//[mainDelegate logArrayContents];
}
- (NSArray *) quando {
NSDateFormatter *timeFormat = [[NSDateFormatter alloc] init];
// 0 - Year
[timeFormat setDateFormat:@"YYYY"];
NSString *year = [timeFormat stringFromDate:[NSDate date]];
// 1 - Month
[timeFormat setDateFormat:@"MM"];
NSString *month = [timeFormat stringFromDate:[NSDate date]];
// 2 - Day
[timeFormat setDateFormat:@"dd"];
NSString *day = [timeFormat stringFromDate:[NSDate date]];
// 3 - Hour
[timeFormat setDateFormat:@"HH"];
NSString *hour = [timeFormat stringFromDate:[NSDate date]];
// 4 - Minute
[timeFormat setDateFormat:@"mm"];
NSString *min = [timeFormat stringFromDate:[NSDate date]];
// 5 - Second
[timeFormat setDateFormat:@"ss"];
NSString *sec = [timeFormat stringFromDate:[NSDate date]];
NSArray *newArray = [[NSArray alloc] initWithObjects:year,month,day,hour,min,sec,nil];
return newArray;
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
@end