Question

in my app i am unzipping a zip file(in splash view controller) later i am displaying an image and firing a timer with 4 secs to change image of the previous image view. and later in view did appear i am firing another timer with 10 secs to call next view controller(home view controller).. and there i have a button to go Story view controller…in this i am using the unzipped data…its taking some time to unzip in this case. so the images r displaying later a few seconds…it fine here

the problem is… i called the unzipping on background thread so its displaying the images quickly and its moving to home view controller..while going to next view controller by clicking a button its crashing on device but its working fine in simulator..

can any body help me out please

Thanks.

code…

-(void)viewWillAppear:(BOOL)animated{
    [self performSelectorInBackground:@selector(unXip) withObject:nil]; 
    CGRect imageFrame = CGRectMake(0,20,320,460);
    splashView.frame = imageFrame;
    splashView.image = [UIImage imageNamed:@"Default.png"];
    [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(changeImg) userInfo:nil repeats:NO];
    [NSTimer scheduledTimerWithTimeInterval:3 target:self selector:@selector(changeImg2) userInfo:nil repeats:NO];


}

-(void)unXip{
    self.fileManager = [NSFileManager defaultManager];
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
    self.documentsDir = [paths objectAtIndex:0];
    NSString *filePath = [NSString stringWithFormat:@"%@/temp", self.documentsDir];
    NSString *filePathbmlg = [NSString stringWithFormat:@"%@/temp/bmlg", self.documentsDir];

    NSString *updateURL = [[NSBundle mainBundle] pathForResource:@"bmlg" ofType:@"zip" inDirectory:@"res"];

    [fileManager createDirectoryAtPath:filePath 
           withIntermediateDirectories:NO
                            attributes:nil
                                 error:nil];


    if([fileManager fileExistsAtPath:filePath]) {
        NSLog(@"File exists at path: %@", updateURL);
    } else {
        NSLog(@"File does not exists at path: %@", updateURL);
    }

    NSLog(@"Checking update at : %@", updateURL);
    NSLog(@"Checking filepath at : %@", filePath);

    if(![fileManager fileExistsAtPath:filePathbmlg]) {  

        ZipArchive *zipArchive = [[ZipArchive alloc] init];

        if([zipArchive UnzipOpenFile:updateURL]) {

            if ([zipArchive UnzipFileTo:filePath overWrite:YES]) {
                //unzipped successfully
                NSLog(@"Archive unzip Success");
                //[self.fileManager removeItemAtPath:filePath error:NULL];
            } else {
                NSLog(@"Failure To Unzip Archive");             
            }

        } else  {
            NSLog(@"Failure To Open Archive");
        }

        [zipArchive release];
    }
}   

- (void)changeImg{

    splashView.image = [UIImage imageNamed:@"screen2.png"];

}

- (void)changeImg2{

    splashView.image = [UIImage imageNamed:@"screen3.png"];
}

- (void)viewDidAppear:(BOOL)animated{   
    [NSTimer scheduledTimerWithTimeInterval:15 target:self selector:@selector(pushCVC) userInfo:nil repeats:NO];
}

- (void)pushCVC{
    homeViewController = [[HomeViewController  alloc] initWithNibName:@"HomeView" bundle:nil];
    [self presentModalViewController:homeViewController animated:YES];
}

Answer 1

thanks for your comments and answers….

The problem is the unzipping process is taking a long time…so if i click start button on the home screen before the completion of the unzipping the file, its crashing…because i have to use the data from unzipped file…

Thanks again..