diff --git a/Project/android/app/build.gradle.kts b/Project/android/app/build.gradle.kts
index 4af4e43..a636dd0 100644
--- a/Project/android/app/build.gradle.kts
+++ b/Project/android/app/build.gradle.kts
@@ -50,6 +50,7 @@ android {
 }
 
 dependencies {
+    implementation ("com.squareup.retrofit2:converter-gson:2.9.0")
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.9")
     implementation("androidx.compose.material:material:1.6.4")
     implementation("androidx.core:core-ktx:1.12.0")
diff --git a/Project/android/app/src/main/java/sae/android/sae_2a/data/Group.kt b/Project/android/app/src/main/java/sae/android/sae_2a/data/Group.kt
new file mode 100644
index 0000000..f0755d8
--- /dev/null
+++ b/Project/android/app/src/main/java/sae/android/sae_2a/data/Group.kt
@@ -0,0 +1,8 @@
+package sae.android.sae_2a.data
+
+data class Group(
+    val id : Long,
+    val num : Int,
+    val year : Int,
+    val sector : String
+)
\ No newline at end of file
diff --git a/Project/android/app/src/main/java/sae/android/sae_2a/data/Vocabulary.kt b/Project/android/app/src/main/java/sae/android/sae_2a/data/Vocabulary.kt
index 36bf9ba..e3b8383 100644
--- a/Project/android/app/src/main/java/sae/android/sae_2a/data/Vocabulary.kt
+++ b/Project/android/app/src/main/java/sae/android/sae_2a/data/Vocabulary.kt
@@ -1,7 +1,8 @@
 package sae.android.sae_2a.data
 
 data class Vocabulary(
-    val name: String,
-    val aut: String?,
+    val word : String,
+    val LangueName: String,
+
     val words: Map<String, String>
 )
\ No newline at end of file
diff --git a/Project/android/app/src/main/java/sae/android/sae_2a/service/ApiClient.kt b/Project/android/app/src/main/java/sae/android/sae_2a/service/ApiClient.kt
new file mode 100644
index 0000000..9dca1d3
--- /dev/null
+++ b/Project/android/app/src/main/java/sae/android/sae_2a/service/ApiClient.kt
@@ -0,0 +1,27 @@
+package sae.android.sae_2a.service
+
+import com.google.gson.Gson
+import com.google.gson.GsonBuilder
+import okhttp3.OkHttpClient
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+
+object ApiClient {
+    private val BASE_URL: String = "https://codefirst.iut.uca.fr/containers/antoinejourdain-api_container/api/v1/"
+
+    private val httpClient : OkHttpClient by lazy {
+        OkHttpClient.Builder().build()
+    }
+
+    private val gson : Gson by lazy {
+        GsonBuilder().setLenient().create()
+    }
+
+    private val retrofit : Retrofit by lazy {
+        Retrofit.Builder()
+            .baseUrl(BASE_URL)
+            .client(httpClient)
+            .addConverterFactory(GsonConverterFactory.create(gson))
+            .build()
+    }
+}
\ No newline at end of file
diff --git a/Project/android/app/src/main/java/sae/android/sae_2a/service/GroupService.kt b/Project/android/app/src/main/java/sae/android/sae_2a/service/GroupService.kt
new file mode 100644
index 0000000..50e60ce
--- /dev/null
+++ b/Project/android/app/src/main/java/sae/android/sae_2a/service/GroupService.kt
@@ -0,0 +1,22 @@
+package sae.android.sae_2a.service
+
+import retrofit2.Response
+import retrofit2.http.Body
+import retrofit2.http.GET
+import retrofit2.http.Path
+import sae.android.sae_2a.data.Group
+import sae.android.sae_2a.data.Vocabulary
+
+interface GroupService {
+
+    @GET("Group")
+    suspend fun getVocabulary(@Body index : Int, @Body count : Int) : Response<MutableList<Group>>
+
+    @GET("Group/{id}")
+    suspend fun getVocById(@Path("id") id : Int) : Response<Group>
+
+
+
+
+
+}
\ No newline at end of file
diff --git a/Project/android/app/src/main/java/sae/android/sae_2a/service/UserService.kt b/Project/android/app/src/main/java/sae/android/sae_2a/service/UserService.kt
new file mode 100644
index 0000000..9d3ba3f
--- /dev/null
+++ b/Project/android/app/src/main/java/sae/android/sae_2a/service/UserService.kt
@@ -0,0 +1,37 @@
+package sae.android.sae_2a.service
+
+import retrofit2.Response
+import retrofit2.http.Body
+import retrofit2.http.DELETE
+import retrofit2.http.GET
+import retrofit2.http.POST
+import retrofit2.http.PUT
+import retrofit2.http.Path
+import retrofit2.http.Query
+import sae.android.sae_2a.data.Vocabulary
+
+
+interface UserService {
+
+    @GET("Vocabulary")
+    suspend fun getVocabulary(@Body index : Int, @Body count: Int) : Response<MutableList<Vocabulary>>
+
+    @GET("Vocabulary/{word}")
+    suspend fun getVocByWord(@Path("word") word : String) : Response<Vocabulary>
+
+    @PUT("Vocabulary/{vocabulary}")
+    suspend fun updateVoc(@Path("vocabulary") vocabulary: Vocabulary) : Response<Vocabulary>
+
+    @DELETE("Vocabulary/{word}")
+    suspend fun deleteVoc(@Path("word") word: String) : Response<Vocabulary>
+
+    @POST("Vocabulary/{vocabulary}")
+    suspend fun addVoc(@Path("vocabulary") vocabulary: Vocabulary) : Response<Vocabulary>
+
+    @GET("Vocabulary/langue/{langue}")
+    suspend fun getByLangue(@Path("langue") langue : String,@Body index : Int, @Body count : Int) : Response<Vocabulary>
+
+    @POST("Vocabulary/AddTranslation")
+    suspend fun addTranslation(@Query("vocId") vocId : String,@Query("translationId") translationId : Long ) : Response<Vocabulary>
+
+}
\ No newline at end of file
diff --git a/Project/android/app/src/main/java/sae/android/sae_2a/view/VocabularyListScreen.kt b/Project/android/app/src/main/java/sae/android/sae_2a/view/VocabularyListScreen.kt
index 2c281e8..ae1ba75 100644
--- a/Project/android/app/src/main/java/sae/android/sae_2a/view/VocabularyListScreen.kt
+++ b/Project/android/app/src/main/java/sae/android/sae_2a/view/VocabularyListScreen.kt
@@ -91,7 +91,7 @@ fun VocCard(vocabulary: Vocabulary){
         modifier = Modifier
             .size(150.dp, 150.dp)
             .border(2.dp, Color.DarkGray, shape = RoundedCornerShape(8.dp, 8.dp))) {
-        Text(vocabulary.name,
+        Text(vocabulary.word,
             modifier = Modifier
                 .fillMaxWidth()
                 .border(2.dp, Color.DarkGray, shape = RoundedCornerShape(8.dp, 8.dp)),
@@ -104,7 +104,7 @@ fun VocCard(vocabulary: Vocabulary){
                 .weight(1f)
                 .align(Alignment.CenterHorizontally)
         )
-        Text( stringResource(id = R.string.created_by) + (vocabulary.aut ?: stringResource(id = R.string.unknown)),
+        Text( stringResource(id = R.string.created_by) + (vocabulary.word ?: stringResource(id = R.string.unknown)),
             modifier = Modifier
                 .wrapContentHeight(Alignment.Bottom)
                 .align(Alignment.End)
@@ -135,12 +135,12 @@ fun VocabularyDetails(vocabulary: Vocabulary){
         stickyHeader(
         ) {
             Text(
-                vocabulary.name, fontSize = 30.sp,
+                vocabulary.LangueName, fontSize = 30.sp,
                 textAlign = TextAlign.Center,
                 modifier = Modifier.fillMaxWidth()
             )
             Text(
-                stringResource(R.string.created_by) + (vocabulary.aut
+                stringResource(R.string.created_by) + (vocabulary.word
                     ?: stringResource(id = R.string.unknown)),
                 fontSize = 20.sp,
                 textAlign = TextAlign.Center,
diff --git a/Project/android/app/src/main/java/sae/android/sae_2a/view/connection.kt b/Project/android/app/src/main/java/sae/android/sae_2a/view/connection.kt
index 5657c4a..a6b6cc3 100644
--- a/Project/android/app/src/main/java/sae/android/sae_2a/view/connection.kt
+++ b/Project/android/app/src/main/java/sae/android/sae_2a/view/connection.kt
@@ -22,11 +22,15 @@ import androidx.compose.ui.text.input.PasswordVisualTransformation
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import sae.android.sae_2a.R
+import sae.android.sae_2a.VM.LoginViewModel
+import sae.android.sae_2a.data.LoginRepository
+import sae.android.sae_2a.data.LoginResponseParser
 
 @Composable
 fun LoginScreen(onLoginClicked: (String, String) -> Unit) {
     var username by remember { mutableStateOf("") }
     var password by remember { mutableStateOf("") }
+    var login =  LoginViewModel(LoginRepository(LoginResponseParser())).login("")
 
     Column(
         modifier = Modifier