Kotlin JSONArray to MutableList
I am fairly new to Kotlin and I am currently dealing with JSON a lot.
I receive a JSON string from the server which I parse into JSONArray as below
var dataArray = JSONArray(String(resultVar!!))
But as far as I've seen JSONArray doesn't really give me enough capabilities to change it's data, it forces me to create a new JSONArray, if I'm not mistaken. So I thought I should use MutableList<JSONObject>, which seems good enough, but I can't find a way to parse JSONArray or the String into it.
How do I do this the easy way? Do I have to iterate through the JSONArray adding every single JSONObject one by one?
As a side question, should I just stick to JSONArray? Is there a way to manipulate the data inside it?
arrays json kotlin mutable
asked Nov 11 at 14:20
Suhrahj
1818
add a comment |
I am fairly new to Kotlin and I am currently dealing with JSON a lot.
I receive a JSON string from the server which I parse into JSONArray as below
var dataArray = JSONArray(String(resultVar!!))
But as far as I've seen JSONArray doesn't really give me enough capabilities to change it's data, it forces me to create a new JSONArray, if I'm not mistaken. So I thought I should use MutableList<JSONObject>, which seems good enough, but I can't find a way to parse JSONArray or the String into it.
How do I do this the easy way? Do I have to iterate through the JSONArray adding every single JSONObject one by one?
As a side question, should I just stick to JSONArray? Is there a way to manipulate the data inside it?
arrays json kotlin mutable
asked Nov 11 at 14:20
Suhrahj
1818
add a comment |
I am fairly new to Kotlin and I am currently dealing with JSON a lot.
I receive a JSON string from the server which I parse into JSONArray as below
var dataArray = JSONArray(String(resultVar!!))
But as far as I've seen JSONArray doesn't really give me enough capabilities to change it's data, it forces me to create a new JSONArray, if I'm not mistaken. So I thought I should use MutableList<JSONObject>, which seems good enough, but I can't find a way to parse JSONArray or the String into it.
How do I do this the easy way? Do I have to iterate through the JSONArray adding every single JSONObject one by one?
As a side question, should I just stick to JSONArray? Is there a way to manipulate the data inside it?
arrays json kotlin mutable
asked Nov 11 at 14:20
Suhrahj
1818
I am fairly new to Kotlin and I am currently dealing with JSON a lot.
I receive a JSON string from the server which I parse into JSONArray as below
var dataArray = JSONArray(String(resultVar!!))
But as far as I've seen JSONArray doesn't really give me enough capabilities to change it's data, it forces me to create a new JSONArray, if I'm not mistaken. So I thought I should use MutableList<JSONObject>, which seems good enough, but I can't find a way to parse JSONArray or the String into it.
How do I do this the easy way? Do I have to iterate through the JSONArray adding every single JSONObject one by one?
As a side question, should I just stick to JSONArray? Is there a way to manipulate the data inside it?
arrays json kotlin mutable
arrays json kotlin mutable
asked Nov 11 at 14:20
Suhrahj
1818
asked Nov 11 at 14:20
Suhrahj
1818
asked Nov 11 at 14:20
Suhrahj
1818
asked Nov 11 at 14:20
Suhrahj
1818
asked Nov 11 at 14:20
Suhrahj
1818
1818
add a comment |
add a comment |
1 Answer
1
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oldest
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As far as it seems, there is no builtin method to convert JSONArray to List.
However, You can use Kotlin tricks to make the java code much shorter:
fun JSONArray.toMutableList(): MutableList<JSONObject> = MutableList(length(), this::getJSONObject)
Note that JSONArray may have values that are not JSONObject (but JSONArray for example). If you are not sure the array contains just object, use the following method:
fun JSONArray.toMutableList(): MutableList<Any> = MutableList(length(), this::get)
If you are using the JSON-java library and not the android one, then you can use JSONArray.toList() which returns a list you can modify.
answered Nov 11 at 18:33
Yoav Sternberg
2,1521225
Thanks a lot for this!
– Suhrahj
Nov 11 at 23:31
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
As far as it seems, there is no builtin method to convert JSONArray to List.
However, You can use Kotlin tricks to make the java code much shorter:
fun JSONArray.toMutableList(): MutableList<JSONObject> = MutableList(length(), this::getJSONObject)
Note that JSONArray may have values that are not JSONObject (but JSONArray for example). If you are not sure the array contains just object, use the following method:
fun JSONArray.toMutableList(): MutableList<Any> = MutableList(length(), this::get)
If you are using the JSON-java library and not the android one, then you can use JSONArray.toList() which returns a list you can modify.
answered Nov 11 at 18:33
Yoav Sternberg
2,1521225
Thanks a lot for this!
– Suhrahj
Nov 11 at 23:31
add a comment |
As far as it seems, there is no builtin method to convert JSONArray to List.
However, You can use Kotlin tricks to make the java code much shorter:
fun JSONArray.toMutableList(): MutableList<JSONObject> = MutableList(length(), this::getJSONObject)
Note that JSONArray may have values that are not JSONObject (but JSONArray for example). If you are not sure the array contains just object, use the following method:
fun JSONArray.toMutableList(): MutableList<Any> = MutableList(length(), this::get)
If you are using the JSON-java library and not the android one, then you can use JSONArray.toList() which returns a list you can modify.
answered Nov 11 at 18:33
Yoav Sternberg
2,1521225
Thanks a lot for this!
– Suhrahj
Nov 11 at 23:31
add a comment |
As far as it seems, there is no builtin method to convert JSONArray to List.
However, You can use Kotlin tricks to make the java code much shorter:
fun JSONArray.toMutableList(): MutableList<JSONObject> = MutableList(length(), this::getJSONObject)
Note that JSONArray may have values that are not JSONObject (but JSONArray for example). If you are not sure the array contains just object, use the following method:
fun JSONArray.toMutableList(): MutableList<Any> = MutableList(length(), this::get)
If you are using the JSON-java library and not the android one, then you can use JSONArray.toList() which returns a list you can modify.
answered Nov 11 at 18:33
Yoav Sternberg
2,1521225
As far as it seems, there is no builtin method to convert JSONArray to List.
However, You can use Kotlin tricks to make the java code much shorter:
fun JSONArray.toMutableList(): MutableList<JSONObject> = MutableList(length(), this::getJSONObject)
Note that JSONArray may have values that are not JSONObject (but JSONArray for example). If you are not sure the array contains just object, use the following method:
fun JSONArray.toMutableList(): MutableList<Any> = MutableList(length(), this::get)
If you are using the JSON-java library and not the android one, then you can use JSONArray.toList() which returns a list you can modify.
answered Nov 11 at 18:33
Yoav Sternberg
2,1521225
edited Nov 11 at 18:40
answered Nov 11 at 18:33
Yoav Sternberg
2,1521225
answered Nov 11 at 18:33
Yoav Sternberg
2,1521225
answered Nov 11 at 18:33
Yoav Sternberg
2,1521225
2,1521225
Thanks a lot for this!
– Suhrahj
Nov 11 at 23:31
add a comment |
Thanks a lot for this!
– Suhrahj
Nov 11 at 23:31
Thanks a lot for this!
– Suhrahj
Nov 11 at 23:31
Thanks a lot for this!
– Suhrahj
Nov 11 at 23:31
add a comment |
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