CODEWITHSUNDEEP
iosobjective-cplistnsnumber
user128526
user128526

Reputation: 111

Converting NSNumbers saved in a plist to integers

Saving data:

- (NSString *)dataFilePath
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:kFilename];
}
- (void)applicationWillTerminate:(NSNotification *)notification
{
NSMutableArray *array = [[NSMutableArray alloc] init];

NSNumber *number = [NSNumber numberWithInt:points];
  [array addObject:number];

  [array writeToFile:[self dataFilePath] atomically:YES];
  [array release];
}

Reading data: BestLabel.text will display the high score. I get a warning: "assignment makes integer from pointer without a cast"

-(void)LoadData{
BestLabel.center = CGPointMake(150,300);

NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
    NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:filePath];
    loadint = [array objectAtIndex:0];
    NSString *myString35 = [NSString stringWithFormat:@"%d", loadint]; 
    BestLabel.text = myString35;
    [array release];
}
}

The sample code I got this from was saving and loading text fields with no problem.. I suppose I could do a string to int conversion, but that seems unnecessary. Thanks for your help!

EDIT:

- (void)applicationWillTerminate:(NSNotification *)notification

{ NSMutableArray *array = [[NSMutableArray alloc] init];

if (points > highscore){

    NSString *myString35 = [NSString stringWithFormat:@"%d", points];
    [array addObject:myString35];
}else {
    NSString *myString35 = [NSString stringWithFormat:@"%d", highscore];
    [array addObject:myString35];
}


NSNumber *number = [NSNumber numberWithInt:GreenBlot.center.x];
[array addObject:number];
NSNumber *number2 = [NSNumber numberWithInt:GreenBlot.center.y];
[array addObject:number2];

And now loading with:

NSString *filePath = [self dataFilePath];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
    NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:filePath];
    BestLabel.text = [array objectAtIndex:0];
    highscore = [[array objectAtIndex:0] intValue];


    lx = [[array objectAtIndex:1] intValue];
    ly = [[array objectAtIndex:2] intValue];
    GreenBlot.center = CGPointMake( lx,ly);


    [array release];
}

lx and ly are integers. I tried CGPointMake( [[array objectAtIndex:1] intValue], [[array objectAtIndex:2] intValue] ) first. Same results, GreenBlot is getting centered at 0,0. Any idea why?

Upvotes: 1

Views: 7747

Answers (3)

mahboudz
mahboudz

Reputation: 39376

CGPointMake is defined:

CGPoint CGPointMake(
    float x,
    float y
)

You are taking GreenBlot.center.x which is presumably a float and feeding it to NSNumber as an int.... Go back and look at the types of your variables and change to [NSNumber numberWithFloat:...] and lx = [[array objectAtIndex:1] floatValue]; etc., as appropriate.

Also, you've created a different question in your editing of the original question.

Upvotes: 0

mahboudz
mahboudz

Reputation: 39376

You need the second line below:

loadint = [array objectAtIndex:0];
int score = [loadint intValue];
NSString *myString35 = [NSString stringWithFormat:@"%d", loadint];

If you are only saving one value, then use a NSDictionary with a key that makes it easier for you to label the value you are saving.

Upvotes: 1

James Eichele
James Eichele

Reputation: 119144

The easiest thing to do is use NSNumber's intValue method:

loadint = [[array objectAtIndex:0] intValue];

Upvotes: 2

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