CODEWITHSUNDEEP
androidarraysjson
Mohammed Nasrullah
Mohammed Nasrullah

Reputation: 433

Adding value to String[] android

I want to have an example String[] images like the below dynamically, but i cannot achieve it

String[] images = new String[] { "http://image/image1", "http://image/image1", "http://image/image1"};

I have a json where it contains the image urls, below code is how i am tryig to put the json image urls to the string[] images

 String[] images = new String[]{};

 for (int i = 0; i < contacts.length(); i++) {
     JSONObject c = contacts.getJSONObject(i);

     String imagepath = c.getString("imagepath");

     images[i] = imagepath; // trying to put the values to String[] images
     }

Upvotes: 0

Views: 2731

Answers (3)

Anoop M Maddasseri
Anoop M Maddasseri

Reputation: 10569

int lenth=contacts.length();

String[] images = new String[lenth];

 for (int i = 0; i < lenth; i++) {
     JSONObject c = contacts.getJSONObject(i);

     String imagepath = c.getString("imagepath");

     images[i] = imagepath ; // trying to put the values to String[] images
     }

For better looping follow Performance Tips .

Upvotes: 3

Akash kv
Akash kv

Reputation: 431

try using Arraylist instead of array

 ArrayList<String> arraylist=new ArrayList<>();
        for (int i = 0; i < contacts.length(); i++) {
            JSONObject c = contacts.getJSONObject(i);

            String imagepath = c.getString("imagepath");

            arraylist.add(imagepath);
        }

to retrive item use arraylist.get(i);

Upvotes: 3

ThomasThiebaud
ThomasThiebaud

Reputation: 11999

You must define a size for your String[] before using it.

String[] images = new String[contacts.length()];

for (int i = 0; i < contacts.length(); i++) {
    JSONObject c = contacts.getJSONObject(i);
    String imagepath = c.getString("imagepath");
    images[i] = newURL; // trying to put the values to String[] images
}

Upvotes: 2

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