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Deltaassissino

macrumors newbie
Original poster
Jan 19, 2012
1
0
hello i have an Modul/ ifstatment problem i don´t see whats wrong...

i want xcode to count the days between 1.1.2012. and he picked dart(that works)

so i want to use the modulo to get 0,1,2 or 3 as result and wanna show for 0= pic 1,1= pic 2 etc. can you please help me to find my fail?

modulo always shows pic 1 = that means moulo = 0 but thats wrong ...

Code:
#import "ViewController.h"

@implementation ViewController
@synthesize theTextField;
@synthesize imageNumber;

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
    
    [dateComponents setMonth:01];
    [dateComponents setYear:2012];
    [dateComponents setDay:01];
    NSDate *dateMin = [calendar dateFromComponents:dateComponents];
    
    [dateComponents setMonth:12];
    [dateComponents setYear:2012];
    [dateComponents setDay:31];
    NSDate *dateMax = [calendar dateFromComponents:dateComponents];
    
    [theDatePicker setMinimumDate:dateMin];
    [theDatePicker setMaximumDate:dateMax];
    [theDatePicker setDate: [NSDate date]];
}
- (IBAction)myDatepickerChangedAction:(id)sender {
    NSTimeInterval secondsBetween = [[theDatePicker date]  timeIntervalSinceDate:[theDatePicker minimumDate]];
    int diff = secondsBetween / 86400;
    [theTextField setText: [NSString stringWithFormat:@"%d", diff]];
    
    NSString *theTextField = @"%d";
    int daysPassed = [theTextField floatValue];
    
    
    int imageNumber = daysPassed % 4;
    
    
    if (daysPassed%4 == 0){
        Trommel1.hidden =NO;
    Trommel2.hidden =YES;
    Trommel3.hidden =YES; 
        Trommel4.hidden =YES;
    }
    
    if (daysPassed%4 == 1){
        Trommel1.hidden =YES;
    Trommel2.hidden =NO;
    Trommel3.hidden =YES; 
        Trommel4.hidden =YES;
    }
    
    if (daysPassed%4 == 2){
        Trommel1.hidden =YES;
    Trommel2.hidden =YES;
    Trommel3.hidden =NO; 
        Trommel4.hidden =YES;
    }
    
    if (daysPassed%4 == 3){
        Trommel1.hidden =YES;
    Trommel2.hidden =YES;
    Trommel3.hidden =YES; 
        Trommel4.hidden =NO;
    }

    
    
}
- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
    
    
    
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated
{
	[super viewWillDisappear:animated];
}

- (void)viewDidDisappear:(BOOL)animated
{
	[super viewDidDisappear:animated];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
    } else {
        return YES;
    }
}

@end
 
You seem to have the debug hooks in there to see what is going on.

What are the values of: TheTextField, daysPassed, imageNumber

Are they getting set to what you expect?

B
 
modulo always shows pic 1 = that means moulo = 0 but thats wrong ...

Code:
    NSString *theTextField = @"%d";
    int daysPassed = [theTextField floatValue];
    
    
    int imageNumber = daysPassed % 4;

Look at these 3 consecutive lines. Why do you think the result is always the same ?

What do you think this line does :

Code:
NSString *theTextField = @"%d";

A little food for thought
 
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