android parse json after optimize php json_encode

Question

There are Arrays in Arrays:

Array 
(
 [0] => Array (  [0] => v1  [1] => v2  [2] => v3 )
 [1] => Array (  [0] => v1  [1] => v2  [3] => v3 )
 [2] => Array (  [0] => v1  [1] => v2  [10] => v3 )
 [4] => Array (  [0] => v1  [1] => v2  [3] => v3 )
)

After json_encode on andorid I get the following:

{
 «0»: [ «v1», «v2», «v3» ],
 «1»: { «0»:«v1», «1»:«v2», «3»:«v3», },
 «2»: { «0»:«v1», «1»:«v2», «10»:«v3» },
 «4»: { «0»:«v1», «1»:«v2», «3»:«v2» }
}

JSONArray jList = jb.getJSONArray(response); //exception is not array

Is there a good way to parse this as Array[Array[]] on Android?

Answer 1

This happens because you have non-contiguous indices. If you "renumber" the array with

$a = array_values($a);

you will have

Array 
(
    [0] => Array (  [0] => v1  [1] => v2  [2] => v3 )
    [1] => Array (  [0] => v1  [1] => v2  [3] => v3 )
    [2] => Array (  [0] => v1  [1] => v2  [10] => v3 )
    [3] => Array (  [0] => v1  [1] => v2  [3] => v3 )
)

and as a result json_encode will create

[ ["v1", "v2", "v3"], { "0": "v1", ...}, ... ]

If you want to have inner arrays too, you must ensure that the inner arrays have contiguous indices as well.

If you can't change the PHP code, the only way is to parse this as a JSON object and iterate over the properties using keys() and pick the values individually.