When I was trying to parse a json array, the studio gave me a compilation error stating foreach is not applicable for json array. Although I know how to get all objects and parse; I just wanted to know why foreach is not applicable even though the json array is an array
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Please show some code.Zoltán– Zoltán2016-03-03 11:51:16 +00:00Commented Mar 3, 2016 at 11:51
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Add some part of codeWaseem Arain– Waseem Arain2016-03-03 11:51:19 +00:00Commented Mar 3, 2016 at 11:51
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3 Answers
For each loop works like this -
For example for and Integer type ArrayList<Integer> list;
for (int x : list)
// process x here
But a JSONArray can have any type of value inside it.
For example -
[{"name" : John}, {"name" : Joe}, 1, false]
This is a valid JSONArray but it contains all kinds of objects namely - JSONObject, Integer, Boolean. So we would get a different type of value each time in for each loop.
So to apply a for each loop on this array we'll have to cast everything to Object class first -
for (Object o : myJsonArray)
Which doesn't makes much sense and would require a lot of useless effort.
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Because JSONArrayclass doesn't implement Iterable interface.
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Because JSONArray derives from Object and foreach expects the collection to be iterable.
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