Access multidimensional array values in UITableView

Question

Im trying to access these values from array storing float:

color_Array = @[@[@96.0f,@178.0f,@228.0f]];

i need to get the first value of the inner first array and i tried :

float *first = [color_Array objectAtIndex:[indexPath.row][0]];

Im just getting an error : expected identifier

Any suggestions ?

You are fetching an array from 0th index. So store resultant into an array named as "SubArray" again. From "SubArray" get float values. — Gagan_iOS
– Gagan_iOS, Commented Nov 3, 2015 at 14:06

Phillip Mills · Accepted Answer · 2015-11-03 14:05:27Z

1

Here's a breakdown of the data structure you've created:

NSArray *color_Array = @[@[@96.0f,@178.0f,@228.0f]];
NSArray *subArray = [color_Array objectAtIndex:0];
NSNumber *firstNumber = [subArray objectAtIndex:0];
float first = [firstNumber floatValue];

You can combine them as you like. For example:

float f = [color_Array[0][0] floatValue];

answered Nov 3, 2015 at 14:05

Phillip Mills

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Jamil · Accepted Answer · 2015-11-03 14:17:55Z

0

You can retrieve by this way

NSArray *color_Array = @[@[@96.0f,@178.0f,@228.0f]];
for (NSArray *rgbArray in color_Array) {
    NSLog(@"%@",rgbArray);
    float r = [rgbArray[0] floatValue];
    float g = [rgbArray[1] floatValue];
    float b = [rgbArray[2] floatValue];
    NSLog(@"r:%f,g:%f,b:%f",r,g,b);
}

answered Nov 3, 2015 at 14:17

Jamil

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