I have trouble fetching data from my API while it works perfectly with Insomnia
{
"count": 4,
"products": [
{
"name": "Tapas",
"price": 10,
"productImage": "uploads\\2021-04-04T15-43-36.826Z_tapas.png",
"_id": "6069dea870f35f0f90242f4a",
"request": {
"type": "GET",
"url": "https://katobackend.azurewebsites.net/api/product/6069dea870f35f0f90242f4a"
}
},
{
"name": "Cupcake",
"price": 6,
"productImage": "uploads\\2021-04-04T20-04-27.036Z_detail-5.jpg",
"_id": "606a1bcba294652bb03e6952",
"request": {
"type": "GET",
"url": "https://katobackend.azurewebsites.net/api/product/606a1bcba294652bb03e6952"
}
},
{
"name": "Bottle",
"price": 6,
"productImage": "uploads/2021-05-23T14-27-33.336Z_Water.jpg",
"_id": "60aa6655898ea9002454b27f",
"request": {
"type": "GET",
"url": "https://katobackend.azurewebsites.net/api/product/60aa6655898ea9002454b27f"
}
},
{
"name": "Bottle",
"price": 6,
"productImage": "uploads/2021-05-23T14-36-50.590Z_Water.jpg",
"_id": "60aa688245340b0024735b5c",
"request": {
"type": "GET",
"url": "https://katobackend.azurewebsites.net/api/product/60aa688245340b0024735b5c"
}
}
]
}
data class ProductResponse (
@SerializedName("count")
var count: Int,
@SerializedName("products")
var products: List<Product>
)
data class Product (
@SerializedName("_id")
var _id: Int,
@SerializedName("name")
var name: String,
@SerializedName("price")
var price: Number,
@SerializedName("productImage")
var productImage: String
)
interface ApiService {
@GET(Constants.PRODUCTS_URL)
fun fetchPosts(@Header("auth-token") token: String): Call<ProductResponse>
}
class ApiClient {
private lateinit var apiService: ApiService
fun getApiService(): ApiService {
// Initialize ApiService if not initialized yet
if (!::apiService.isInitialized) {
val retrofit = Retrofit.Builder()
.baseUrl(Constants.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build()
apiService = retrofit.create(ApiService::class.java)
}
return apiService
}
}
class Authenticated : AppCompatActivity() {
private lateinit var sessionManager: SessionManager
private lateinit var apiClient: ApiClient
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_authenticated)
lukaku.setOnClickListener(){
fetchPosts()
}
}
private fun fetchPosts() {
apiClient = ApiClient()
sessionManager = SessionManager(this)
// Pass the token as parameter
//println("${sessionManager.fetchAuthToken()}")
apiClient.getApiService().fetchPosts(token = "${sessionManager.fetchAuthToken()}")
.enqueue(object : Callback<ProductResponse> {
override fun onFailure(call: Call<ProductResponse>, t: Throwable) {
Log.e("", t.message, t)
}
override fun onResponse(call: Call<ProductResponse>, response: Response<ProductResponse>) {
Log.d("Response", response.toString())
println(response)
println(response.body())
}
})
}
}
I'm using an auth-token as header and I can get the token from my Activity without any problem but can't get products even link for API is working
06-01 10:08:05.111 6739-6783/com.mlp.project E/Surface: getSlotFromBufferLocked: unknown buffer: 0x7f4a5805aa00
com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: Invalid double: "6069dea870f35f0f90242f4a"
at com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:228)
at com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:218)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:131)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:222)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:41)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:82)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:131)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:222)
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:40)
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:27)
at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:243)
at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:153)
at okhttp3.RealCall$AsyncCall.run(RealCall.kt:138)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.NumberFormatException: Invalid double: "6069dea870f35f0f90242f4a"
at java.lang.StringToReal.invalidReal(StringToReal.java:63)
at java.lang.StringToReal.initialParse(StringToReal.java:114)
at java.lang.StringToReal.parseDouble(StringToReal.java:282)
at java.lang.Double.parseDouble(Double.java:301)
at com.google.gson.stream.JsonReader.nextInt(JsonReader.java:1201)
at com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:226)
at com.google.gson.internal.bind.TypeAdapters$7.read(TypeAdapters.java:218)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:131)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:222)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:41)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:82)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:131)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:222)
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:40)
at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:27)
at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:243)
at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:153)
at okhttp3.RealCall$AsyncCall.run(RealCall.kt:138)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Your _id key is coming in as a string value while you have kept it as an Int in the data model, which is causing exception while conversion using Gson, I would suggest you update the data model as following and try again.
data class Product (
@SerializedName("_id")
var _id: String,
@SerializedName("name")
var name: String,
@SerializedName("price")
var price: Number,
@SerializedName("productImage")
var productImage: String
)