CODEWITHSUNDEEP
androidkotlin
humble_pie
humble_pie

Reputation: 119

Why Kotlin is not processing my list of Arrays

I am getting data from a json api in my Kotlin code. I can parse the data correctly for string values but parsing the list of arrays is causing issues.

My response data is follows 

{
    "limit": "10",
    "schedule": {
        "0": ["0", "3.00", "7.59", "9.00", "12.59", "14.00", "22.59"],
        "1": ["1", "3.00", "7.59", "9.00", "12.59", "14.00", "22.59"],
        "2": ["2", "3.00", "7.59", "9.00", "12.59", "14.00", "22.59"],
        "3": ["3", "3.00", "7.59", "9.00", "12.59", "14.00", "22.59"],
        "4": ["4", "3.00", "7.59", "9.00", "12.59", "14.00", "22.59"],
        "5": ["5", "3.00", "7.59", "9.00", "12.59", "14.00", "22.59"],
        "6": ["6", "3.00", "7.59", "9.00", "12.59", "14.00", "22.59"]
    },
    "target_temp": "32.18"
}

Now to retrieve the value e.g target_temp I am using following code successfully

val gson = GsonBuilder().create() 
 val target = gson.fromJson(body, data::class.java)        println(target.target_temp)

and my class code is simple 

class data(val target_temp: String)

Now when I want to access the schedule I get the error.

java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 50 path $.schedule

My code to retrieve schedule is below.

val gson = GsonBuilder().create()
val schedule = gson.fromJson(body, schedule::class.java)
println(schedule.schedule.get(1))

and class for schedule is 

class schedule(val schedule: ArrayList<String>)

Upvotes: 0

Views: 147

Answers (2)

Alexander Egger
Alexander Egger

Reputation: 5300

Schedule is not of type ArrayList<String put of type Map<ArrayList<String>>.

Change your definition of schedule to:

class schedule(val schedule: Map<String, ArrayList<String>>)

Full example: 

val gson = GsonBuilder().create()
val schedule = gson.fromJson(body, schedule::class.java)
println(schedule.schedule.get("0"))

Upvotes: 1

Muhammad Muzammil Sharif
Muhammad Muzammil Sharif

Reputation: 577

in your response model set schedule variable datatype Map<String, List<String>> instead of Schedule class object or List<String>

your response model will look like below

data class ResponseModel(
   val schedule: Map<String, List<String>>,
   val target_temp: String
)

Upvotes: 1

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