current community

your communities

more stack exchange communities

Stack Exchange
tour help
careers 2.0
Take the 2-minute tour ×
Stack Overflow is a question and answer site for professional and enthusiast programmers. It's 100% free, no registration required.
up vote 1 down vote favorite

Using a web service I'm requesting histogram data. The data is a set of arrays inside an array:

[[1375056000000,23.284713745117],[1375142400000,3.809531211853],
[1375228800000,9.6309003829956],[1375315200000,2.7411839962006]]

I want to be able to store the key pair values in a Hash Map. Usually I would iterate through a JSONArray and access objects using jsonObject.getInt("whatever"), but in this case I can't. Not sure how to achieve this.

Thanks in advance =)

share|improve this question
add comment

3 Answers

up vote 1 down vote accepted

Create JSONArray object from your JSON string and then iterate using getJSONArray(int index) method. Finally use getDouble(int index) and getLong(int index) to retrieve values from inner arrays.

in your example:

JSONArray a1 = new JSONArray("[[1375056000000,23.284713745117],[1375142400000,3.809531211853]]");
for (int i=0; i<a1.length(); i++) {
 JSONArray a2 = a1.getJSONArray(i);
 long v1 = a2.getLong(0);
 double v2 = a2.getDouble(1); 
}
share|improve this answer
    
That's great - thanks so much! –  chegwin Aug 27 '13 at 18:23
add comment
up vote 0 down vote 
String json = "[[1375056000000,23.284713745117],[1375142400000,3.809531211853],[1375228800000,9.6309003829956],[1375315200000,2.7411839962006]]";

JSONArray jsonArray = new JSONArray(json);
for (int i = 0; i < jsonArray.length(); i++){
    jsonArray.getJSONArray(i).getLong(0); //do something with the key
    jsonArray.getJSONArray(i).getDouble(1); //do something with the value
}
share|improve this answer
add comment
up vote 0 down vote 
String yourJsonArray;
JSONArray root = new JSONArray(yourJsonArray);
int rootSize = root.length();
for (int i = 0, i < rootSize; i++) {
  JSONArray inner = root. getJSONArray(i);
  long firstChildren = inner.getLong(0);
  double secondChildren = inner.getDouble(1);


}
share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.