Question

How can I Initialize and allocate multiple objects with different name and pass it to the NSArray. from Below code the object is initialized once in loop and I need to initialized multiple times as per the For loop will go with different name..and then pass it to NSArray.please check the code below..
when For loop will start means i=0 ..initialized item would betempItemi
now next time when i=1 and i=2 the tempItemi name will be same .how can i change this with in loop..and pass it to NSArray *items

for (int i = 0; i< [Array count]; i++)
{
    id object = [Array objectAtIndex:i];

    if ([object isKindOfClass:[NSDictionary class]])
    {
        NSDictionary *objDict = (NSDictionary *)object;


        ECGraphItem *tempItemi = [[ECGraphItem alloc]init];

        NSString *str = [objDict objectForKey:@"title"];

        NSLog(@"str value%@",str);
        float f=[str floatValue];
        tempItemi.isPercentage=YES;
        tempItemi.yValue=f;
        tempItemi.width=30;

        NSArray *items = [[NSArray alloc] initWithObjects:tempItemi,nil];
        //in array need to pass all the initialized values


        [graph drawHistogramWithItems:items lineWidth:2 color:[UIColor blackColor]];
    }
}

Answer 1

Why dont you just make the array mutable and then add the object each time like this:

NSMutableArray *items = [[NSMutableArray alloc] init];
// a mutable array means you can add objects to it!

for (int i = 0; i< [Array count]; i++)
{
    id object = [Array objectAtIndex:i];

    if ([object isKindOfClass:[NSDictionary class]])
    {
        NSDictionary *objDict = (NSDictionary *)object;


        ECGraphItem *tempItemi = [[ECGraphItem alloc]init];

        NSString *str = [objDict objectForKey:@"title"];

        NSLog(@"str value%@",str);
        float f=[str floatValue];
        tempItemi.isPercentage=YES;
        tempItemi.yValue=f;
        tempItemi.width=30;

        [items addObject: tempItemi];
        //in array need to pass all the initialized values

       }
}

    [graph drawHistogramWithItems:items lineWidth:2 color:[UIColor blackColor]];

Anyways items in your original code will be reinitializing each time and you are drawing a new histogram each time so your code won’t work… This should work…