Comparing with NSMutableArray

Question

In my Array 1, which I loaded images from NSDocumentDirectory, I loaded them and add a NSMutableDictionary:

self.images = [NSMutableArray array];
for(int i = 0; i <= 8; i++) 
{ 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDir = [paths objectAtIndex:0];

    NSString *savedImagePath = [documentsDir stringByAppendingPathComponent:[NSString stringWithFormat:@"Images%d.png", i]]; 
    if([[NSFileManager defaultManager] fileExistsAtPath:savedImagePath]){ 
        NSMutableDictionary *container = [[NSMutableDictionary alloc] init];
        [container setObject:[UIImage imageWithContentsOfFile:savedImagePath] forKey:@"image"];
        [container setObject:[NSNumber numberWithInt:i] forKey:@"index"];
        [images addObject:container];
    } 
}

In my other array Array 2, I loaded them from the app.

    self.images = [NSMutableArray arrayWithObjects:
                   @"01.jpg",@"02.jpg",@"03.jpg",@"04.jpg",@"05.jpg",@"06.jpg",@"07.jpg",nil];

I was able to add string to Array 2 like this:

for (int x=1; x<8;x++) {
    // add as NSString
    [images addObject:[NSString stringWithFormat:@"%d", x]];

    }

And was able to compare Array 2 like this:

   NSInteger index = carousel.currentItemIndex;
    if ([[images objectAtIndex:index] intValue] == 1){

What I wanted to do, is to do it to Array 1. I know Array 1 has been already added with NSNumber, but Im kinda new to NSMutableDictionary so I can't do it the same as Array 2.

Can it be done the same as my Array 2 or what is the other way?

Thanks for the help.

You are adding dictionary as an object to array, watch my answer.. — Charan
– Charan, Commented Jul 9, 2012 at 6:25

Charan · Accepted Answer · 2012-07-09 06:36:36Z

3

Actually Here you have the array of dictionaries, because you are adding the dictionary which has two objects with keys image and index

So, for retrieving the array of dictionaries,

just log it and see what happens

Edit 2.0

for(int i=0; i< [images count]; i++){
    NSNumber *num =[[images objectAtIndex:i] objectForKey:@"index"];

    int index = [num intValue];

    NSLog(@"%d",index)
}

edited Jul 9, 2012 at 6:36

answered Jul 9, 2012 at 6:23

Charan

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7 Comments

Bazinga Over a year ago

its value in the debugger is all (null)

Charan Over a year ago

My bad, i have given key value as value. Now i have edited, keep the key value as index

Bazinga Over a year ago

yup, already have change it. Its index wag logged. But how to compare it like the above I mention. I kinda confused with this dictionaries.

Charan Over a year ago

You have to retireve the objects in the dictionary according to its corresponding key value and compare it inside the for loop, because you are getting the values inside it

Bazinga Over a year ago

I was able to display it. But I need to compare its indexes the value in dictionary to a integer or string.

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