Display array of Images in UIImageView

Question

array of images added into Project

imaging is the UIImageView and imagg is Image choosen by user its default _imaging.image=imagg;

    arr = [NSArray arrayWithObjects:
                        [UIImage imageNamed:@"1.jpg"],
                        [UIImage imageNamed:@"2.jpeg"],
                        [UIImage imageNamed:@"3.jpeg"],
                        [UIImage imageNamed:@"4.jpeg"],
                        [UIImage imageNamed:@"5.jpeg"],
              nil];

assume user selected third image i.e 3.jpeg i am showing the 3.jpeg in imageview. Then using two button actions respectively Next and Previous next or previous images 3.jpeg should display.

   - (IBAction)previous:(id)sender {

    ////

    }

- (IBAction)next:(id)sender {

 //////
 }

}

for the next action its starting from 2nd image even for previous action its starting from 1st image.

Just guessing: In your next/previous methods, try sending an integer value for the currentIndex +/- 1 respectively. — Slavcho
– Slavcho, Commented Jul 21, 2014 at 12:18

Anbu.Karthik · Accepted Answer · 2014-08-04 07:46:20Z

1

this is the simple concept, this is working in static method, but working fine

assign the one global variable

@property (strong,nonatomic) NSString *imagestr;


- (IBAction)previous:(id)sender {


int str=[imagestr integerValue];

NSLog(@"the int value==%d",str);
switch (str) {
    case 0:
        _imaging.image=[arr objectAtIndex:4];
        imagestr=@"4";
        break;
    case 1:
        _imaging.image=[arr objectAtIndex:0];
        imagestr=@"0";
        break;
    case 2:
        _imaging.image=[arr objectAtIndex:1];
        imagestr=@"1";
        break;
    case 3:
        _imaging.image=[arr objectAtIndex:2];
        imagestr=@"2";
        break;
    case 4:
        _imaging.image=[arr objectAtIndex:3];
        imagestr=@"3";
        break;


    default:
        break;

}
}

- (IBAction)next:(id)sender {



int str=[imagestr integerValue];

NSLog(@"the int value==%d",str);
switch (str) {
    case 0:
        _imaging.image=[arr objectAtIndex:1];
        imagestr=@"1";
        break;
    case 1:
        _imaging.image=[arr objectAtIndex:2];
         imagestr=@"2";
        break;
    case 2:
        _imaging.image=[arr objectAtIndex:3];
         imagestr=@"3";
        break;
    case 3:
        _imaging.image=[arr objectAtIndex:4];
         imagestr=@"4";
        break;
    case 4:
        _imaging.image=[arr objectAtIndex:0];
         imagestr=@"0";
        break;


    default:
        break;
}



 }

edited Aug 4, 2014 at 7:46

answered Jul 21, 2014 at 13:15

Anbu.Karthik

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1 Comment

Jogendra.Com Over a year ago

If in array increase images then your code will work or not ?

Jogendra.Com · Accepted Answer · 2014-07-22 04:57:32Z

1

On clicked on next button

Before using this first set currentIndex in this

-(IBAction)next{
    if (arr.count > 0) {
        currentIndex++;
        if (currentIndex > arr.count - 1) {
            currentIndex = 0;
        }
    imageViewObj.image = [arr objectAtIndex:currentIndex];
    }
}

on pervious button

-(IBAction)pervious{
        if (arr.count > 0) {
            currentIndex--;
            if (currentIndex <= 0) {
                currentIndex = arr.count - 1;
            }
        imageViewObj.image = [arr objectAtIndex:currentIndex];
        }
 }

Try this is working fine

edited Jul 22, 2014 at 4:57

answered Jul 21, 2014 at 12:26

Jogendra.Com

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3 Comments

Code cracker Over a year ago

stucked at currentIndex @joge

Jogendra.Com Over a year ago

it's a global integer type variable and insert default index in this on "ViewDidLoad"

Code cracker Over a year ago

ya got it .. ur answer is very close to my question

Slavcho · Accepted Answer · 2014-07-21 12:21:47Z

0

Set some integer property currentIndex to 2 (if you load first the 3rd image).
When calling the next/previous methods increment/decrement that property and load the correct image. ImageView *image = [arr objectAtIndex:currentIndex]

answered Jul 21, 2014 at 12:21

Slavcho

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Comments

Farai · Accepted Answer · 2014-07-21 12:23:11Z

0

when you initialize your view controller, keep track of the current image being viewed for example 0, to be used as an array index.

When next is pressed, increment the index and retrieve the image from the array using the updated count.

e.g.

 - (IBAction)next:(id)sender { 
imageCount++;
[myImageView setImage:[UIImage imageNamed:arr[imageCount] ];
 }

hope this helps. :)

answered Jul 21, 2014 at 12:23

Farai

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