v1.4 : groupes de destinataires et simplification de l'écran principal

- Nouveau modèle : groupes nommés (famille, amis…) stockés en JSON dans les
  préférences, avec migration automatique de l'ancienne liste de numéros
  vers un groupe « Mes contacts »
- Écran principal : la roue crantée (doublon) disparaît ; la carte du bas
  affiche des puces de sélection du groupe actif + ses numéros, et ouvre
  la gestion des groupes
- Paramètres : nom (enregistré à la saisie) + liste des groupes ; création,
  édition et suppression via boîte de dialogue avec validation des numéros
- Prefs.kt : accès centralisé aux préférences

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/build.gradle.kts

@@ -23,8 +23,8 @@ android {
         applicationId = "com.example.maposition"
         minSdk = 21
         targetSdk = 36
-        versionCode = 4
+        versionCode = 5
-        versionName = "1.3"
+        versionName = "1.4"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/java/com/example/maposition/MainActivity.kt

@@ -17,7 +17,6 @@ import android.os.Looper
 import android.os.SystemClock
 import android.telephony.SmsManager
 import android.view.View
-import android.widget.ImageButton
 import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.ActivityCompat
@@ -27,6 +26,8 @@ import com.google.android.gms.location.LocationServices
 import com.google.android.gms.location.Priority
 import com.google.android.gms.tasks.CancellationTokenSource
 import com.google.android.material.card.MaterialCardView
+import com.google.android.material.chip.Chip
+import com.google.android.material.chip.ChipGroup
 import com.google.android.material.progressindicator.CircularProgressIndicator
 import java.util.concurrent.TimeUnit
 
@@ -52,6 +53,7 @@ class MainActivity : AppCompatActivity() {
     private lateinit var statusText: TextView
     private lateinit var progress: CircularProgressIndicator
     private lateinit var recipientsText: TextView
+    private lateinit var groupChips: ChipGroup
 
     // État d'un envoi en cours
     private var busy = false
@@ -83,6 +85,7 @@ class MainActivity : AppCompatActivity() {
         statusText = findViewById(R.id.statusText)
         progress = findViewById(R.id.progress)
         recipientsText = findViewById(R.id.recipientsText)
+        groupChips = findViewById(R.id.groupChips)
 
         ContextCompat.registerReceiver(
             this, smsSentReceiver, IntentFilter(ACTION_SMS_SENT),
@@ -90,7 +93,6 @@ class MainActivity : AppCompatActivity() {
         )
 
         sendButton.setOnClickListener { startSendFlow() }
-        findViewById<ImageButton>(R.id.settingsButton).setOnClickListener { openSettings() }
         findViewById<MaterialCardView>(R.id.recipientsCard).setOnClickListener { openSettings() }
     }
 
@@ -109,28 +111,41 @@ class MainActivity : AppCompatActivity() {
         startActivity(Intent(this, SettingsActivity::class.java))
     }
 
-    private fun getSavedSettings(): Pair<String, List<String>> {
+    // --- Carte des groupes de destinataires ---
-        val prefs = getSharedPreferences("MaPositionPrefs", MODE_PRIVATE)
-        val name = prefs.getString("name", "") ?: ""
-        val phones = prefs.getString("phones", "") ?: ""
-        val phoneList = phones.split(";").map { it.trim() }.filter { it.isNotEmpty() }
-        return Pair(name, phoneList)
-    }
 
     private fun refreshRecipientsCard() {
-        val (name, phones) = getSavedSettings()
+        val groups = Prefs.getGroups(this)
-        recipientsText.text = if (phones.isEmpty()) {
+        groupChips.removeAllViews()
-            getString(R.string.recipients_none)
+
-        } else {
+        if (groups.isEmpty()) {
-            val who = if (name.isBlank()) "" else "$name → "
+            groupChips.visibility = View.GONE
-            who + phones.joinToString(", ")
+            recipientsText.text = getString(R.string.recipients_none)
+            return
         }
+
+        groupChips.visibility = View.VISIBLE
+        val active = Prefs.getActiveGroup(this)!!
+        groups.forEach { g ->
+            val chip = Chip(this).apply {
+                text = g.name
+                isCheckable = true
+                isChecked = g.name == active.name
+                setOnClickListener {
+                    Prefs.setActiveGroupName(this@MainActivity, g.name)
+                    refreshRecipientsCard()
+                }
+            }
+            groupChips.addView(chip)
+        }
+        recipientsText.text = active.phones.joinToString(", ")
     }
 
+    // --- Déclenchement de l'envoi ---
+
     private fun startSendFlow() {
         if (busy) return
-        val (_, phones) = getSavedSettings()
+        val active = Prefs.getActiveGroup(this)
-        if (phones.isEmpty()) {
+        if (active == null || active.phones.isEmpty()) {
             setStatus(getString(R.string.status_no_recipients))
             openSettings()
             return
@@ -220,7 +235,12 @@ class MainActivity : AppCompatActivity() {
         }
 
     private fun sendSmsWithLocation(location: Location, stale: Boolean) {
-        val (name, phones) = getSavedSettings()
+        val name = Prefs.getName(this)
+        val phones = Prefs.getActiveGroup(this)?.phones ?: emptyList()
+        if (phones.isEmpty()) {
+            abort(getString(R.string.status_no_recipients))
+            return
+        }
 
         val link = "https://maps.google.com/?q=${location.latitude},${location.longitude}"
         val ageMin = TimeUnit.MILLISECONDS.toMinutes(System.currentTimeMillis() - location.time)

app/src/main/java/com/example/maposition/Prefs.kt

@@ -0,0 +1,64 @@
+package com.example.maposition
+
+import android.content.Context
+import org.json.JSONArray
+import org.json.JSONObject
+
+data class Group(val name: String, val phones: List<String>)
+
+object Prefs {
+    private const val FILE = "MaPositionPrefs"
+
+    private fun sp(ctx: Context) = ctx.getSharedPreferences(FILE, Context.MODE_PRIVATE)
+
+    fun getName(ctx: Context): String = sp(ctx).getString("name", "") ?: ""
+
+    fun setName(ctx: Context, name: String) {
+        sp(ctx).edit().putString("name", name.trim()).apply()
+    }
+
+    fun getGroups(ctx: Context): MutableList<Group> {
+        val raw = sp(ctx).getString("groups", null)
+        val groups = mutableListOf<Group>()
+        if (raw != null) {
+            val arr = JSONArray(raw)
+            for (i in 0 until arr.length()) {
+                val o = arr.getJSONObject(i)
+                val phones = mutableListOf<String>()
+                val pa = o.getJSONArray("phones")
+                for (j in 0 until pa.length()) phones.add(pa.getString(j))
+                groups.add(Group(o.getString("name"), phones))
+            }
+        } else {
+            // Migration depuis l'ancien format : liste unique de numéros
+            val legacy = sp(ctx).getString("phones", "") ?: ""
+            val phones = legacy.split(";").map { it.trim() }.filter { it.isNotEmpty() }
+            if (phones.isNotEmpty()) {
+                groups.add(Group(ctx.getString(R.string.default_group_name), phones))
+                saveGroups(ctx, groups)
+            }
+        }
+        return groups
+    }
+
+    fun saveGroups(ctx: Context, groups: List<Group>) {
+        val arr = JSONArray()
+        groups.forEach { g ->
+            arr.put(JSONObject().put("name", g.name).put("phones", JSONArray(g.phones)))
+        }
+        sp(ctx).edit().putString("groups", arr.toString()).apply()
+    }
+
+    fun getActiveGroupName(ctx: Context): String = sp(ctx).getString("activeGroup", "") ?: ""
+
+    fun setActiveGroupName(ctx: Context, name: String) {
+        sp(ctx).edit().putString("activeGroup", name).apply()
+    }
+
+    /** Groupe actif, ou le premier groupe si l'actif n'existe plus. */
+    fun getActiveGroup(ctx: Context): Group? {
+        val groups = getGroups(ctx)
+        if (groups.isEmpty()) return null
+        return groups.find { it.name == getActiveGroupName(ctx) } ?: groups.first()
+    }
+}

app/src/main/java/com/example/maposition/SettingsActivity.kt

@@ -1,57 +1,138 @@
 package com.example.maposition
 
-import android.content.Context
 import android.os.Bundle
+import android.text.Editable
+import android.text.TextWatcher
+import android.view.View
 import android.widget.ImageButton
-import android.widget.Toast
+import android.widget.LinearLayout
+import android.widget.TextView
+import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import com.google.android.material.button.MaterialButton
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.textfield.TextInputEditText
 import com.google.android.material.textfield.TextInputLayout
 
 class SettingsActivity : AppCompatActivity() {
 
     private val phoneRegex = Regex("""^\+?[0-9][0-9 .\-]{5,16}$""")
+    private lateinit var groupsList: LinearLayout
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_settings)
 
-        val prefs = getSharedPreferences("MaPositionPrefs", Context.MODE_PRIVATE)
+        groupsList = findViewById(R.id.groupsList)
 
         val nameInput = findViewById<TextInputEditText>(R.id.nameInput)
-        val phonesLayout = findViewById<TextInputLayout>(R.id.phonesLayout)
+        nameInput.setText(Prefs.getName(this))
-        val phonesInput = findViewById<TextInputEditText>(R.id.phonesInput)
+        nameInput.addTextChangedListener(object : TextWatcher {
-
+            override fun beforeTextChanged(s: CharSequence?, a: Int, b: Int, c: Int) {}
-        nameInput.setText(prefs.getString("name", ""))
+            override fun onTextChanged(s: CharSequence?, a: Int, b: Int, c: Int) {}
-        phonesInput.setText(prefs.getString("phones", ""))
+            override fun afterTextChanged(s: Editable?) {
+                Prefs.setName(this@SettingsActivity, s?.toString() ?: "")
+            }
+        })
 
         findViewById<ImageButton>(R.id.backButton).setOnClickListener { finish() }
+        findViewById<MaterialButton>(R.id.addGroupButton).setOnClickListener { showGroupDialog(null) }
 
-        findViewById<MaterialButton>(R.id.saveButton).setOnClickListener {
+        renderGroups()
-            val rawPhones = phonesInput.text.toString()
+    }
-            val phones = rawPhones.split(";").map { it.trim() }.filter { it.isNotEmpty() }
 
-            when {
+    private fun renderGroups() {
-                phones.isEmpty() -> {
+        groupsList.removeAllViews()
-                    phonesLayout.error = getString(R.string.error_no_phone)
+        val groups = Prefs.getGroups(this)
-                    return@setOnClickListener
+
-                }
+        if (groups.isEmpty()) {
-                phones.any { !phoneRegex.matches(it) } -> {
+            val empty = TextView(this).apply {
-                    val bad = phones.first { !phoneRegex.matches(it) }
+                text = getString(R.string.no_groups)
-                    phonesLayout.error = getString(R.string.error_bad_phone, bad)
+                setPadding(8, 24, 8, 24)
-                    return@setOnClickListener
-                }
             }
-            phonesLayout.error = null
+            groupsList.addView(empty)
+            return
+        }
 
-            prefs.edit()
+        val activeName = Prefs.getActiveGroup(this)?.name
-                .putString("name", nameInput.text.toString().trim())
+        groups.forEach { g ->
-                .putString("phones", phones.joinToString(";"))
+            val item = layoutInflater.inflate(R.layout.item_group, groupsList, false)
-                .apply()
+            val title = if (g.name == activeName) {
-
+                getString(R.string.group_active_suffix, g.name)
-            Toast.makeText(this, getString(R.string.saved), Toast.LENGTH_SHORT).show()
+            } else {
-            finish()
+                g.name
+            }
+            item.findViewById<TextView>(R.id.groupName).text = title
+            item.findViewById<TextView>(R.id.groupPhones).text = g.phones.joinToString(", ")
+            item.setOnClickListener { showGroupDialog(g) }
+            groupsList.addView(item)
         }
     }
+
+    private fun showGroupDialog(existing: Group?) {
+        val view = layoutInflater.inflate(R.layout.dialog_group, null)
+        val nameLayout = view.findViewById<TextInputLayout>(R.id.groupNameLayout)
+        val nameInput = view.findViewById<TextInputEditText>(R.id.groupNameInput)
+        val phonesLayout = view.findViewById<TextInputLayout>(R.id.groupPhonesLayout)
+        val phonesInput = view.findViewById<TextInputEditText>(R.id.groupPhonesInput)
+
+        if (existing != null) {
+            nameInput.setText(existing.name)
+            phonesInput.setText(existing.phones.joinToString(";"))
+        }
+
+        val builder = MaterialAlertDialogBuilder(this)
+            .setTitle(if (existing == null) R.string.group_new else R.string.group_edit)
+            .setView(view)
+            .setPositiveButton(R.string.save, null)
+            .setNegativeButton(android.R.string.cancel, null)
+        if (existing != null) builder.setNeutralButton(R.string.delete, null)
+
+        val dialog = builder.create()
+        dialog.setOnShowListener {
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                val name = nameInput.text.toString().trim()
+                val phones = phonesInput.text.toString()
+                    .split(";").map { it.trim() }.filter { it.isNotEmpty() }
+                nameLayout.error = null
+                phonesLayout.error = null
+
+                val groups = Prefs.getGroups(this)
+                when {
+                    name.isEmpty() ->
+                        nameLayout.error = getString(R.string.error_no_group_name)
+                    groups.any { it.name == name && it.name != existing?.name } ->
+                        nameLayout.error = getString(R.string.error_dup_group)
+                    phones.isEmpty() ->
+                        phonesLayout.error = getString(R.string.error_no_phone)
+                    phones.any { !phoneRegex.matches(it) } ->
+                        phonesLayout.error = getString(
+                            R.string.error_bad_phone,
+                            phones.first { !phoneRegex.matches(it) }
+                        )
+                    else -> {
+                        val idx = groups.indexOfFirst { it.name == existing?.name }
+                        if (idx >= 0) groups[idx] = Group(name, phones)
+                        else groups.add(Group(name, phones))
+                        Prefs.saveGroups(this, groups)
+                        if (existing != null && Prefs.getActiveGroupName(this) == existing.name) {
+                            Prefs.setActiveGroupName(this, name)
+                        }
+                        renderGroups()
+                        dialog.dismiss()
+                    }
+                }
+            }
+            if (existing != null) {
+                dialog.getButton(AlertDialog.BUTTON_NEUTRAL).setOnClickListener {
+                    val groups = Prefs.getGroups(this)
+                    groups.removeAll { it.name == existing.name }
+                    Prefs.saveGroups(this, groups)
+                    renderGroups()
+                    dialog.dismiss()
+                }
+            }
+        }
+        dialog.show()
+    }
 }

app/src/main/res/layout/activity_main.xml

@@ -23,10 +23,11 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="24dp"
         android:layout_marginTop="24dp"
+        android:layout_marginEnd="24dp"
         android:text="@string/app_name"
         android:textSize="28sp"
         android:textStyle="bold"
-        app:layout_constraintEnd_toStartOf="@id/settingsButton"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
@@ -38,23 +39,10 @@
         android:text="@string/subtitle"
         android:textColor="?attr/colorOnSurfaceVariant"
         android:textSize="14sp"
-        app:layout_constraintEnd_toStartOf="@id/settingsButton"
+        app:layout_constraintEnd_toEndOf="@id/titleText"
         app:layout_constraintStart_toStartOf="@id/titleText"
         app:layout_constraintTop_toBottomOf="@id/titleText" />
 
-    <ImageButton
-        android:id="@+id/settingsButton"
-        android:layout_width="48dp"
-        android:layout_height="48dp"
-        android:layout_marginEnd="16dp"
-        android:background="?attr/selectableItemBackgroundBorderless"
-        android:contentDescription="@string/settings_title"
-        android:src="@drawable/ic_settings"
-        app:layout_constraintBottom_toBottomOf="@id/subtitleText"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toTopOf="@id/titleText"
-        app:tint="?attr/colorOnSurfaceVariant" />
-
     <FrameLayout
         android:id="@+id/sendButton"
         android:layout_width="256dp"
@@ -139,13 +127,37 @@
             android:orientation="vertical"
             android:padding="16dp">
 
-            <TextView
+            <LinearLayout
-                android:layout_width="wrap_content"
+                android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:text="@string/recipients_label"
+                android:gravity="center_vertical"
-                android:textColor="?attr/colorOnSurfaceVariant"
+                android:orientation="horizontal">
-                android:textSize="13sp"
+
-                android:textStyle="bold" />
+                <TextView
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/recipients_label"
+                    android:textColor="?attr/colorOnSurfaceVariant"
+                    android:textSize="13sp"
+                    android:textStyle="bold" />
+
+                <ImageView
+                    android:layout_width="20dp"
+                    android:layout_height="20dp"
+                    android:importantForAccessibility="no"
+                    android:src="@drawable/ic_settings"
+                    app:tint="?attr/colorOnSurfaceVariant" />
+            </LinearLayout>
+
+            <com.google.android.material.chip.ChipGroup
+                android:id="@+id/groupChips"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                app:chipSpacingVertical="0dp"
+                app:singleLine="false"
+                app:singleSelection="true" />
 
             <TextView
                 android:id="@+id/recipientsText"

app/src/main/res/layout/activity_settings.xml

@@ -12,78 +12,89 @@
         android:scaleType="centerCrop"
         android:src="@drawable/bg_watermark" />
 
-<LinearLayout
+    <ScrollView
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="vertical"
-    android:padding="24dp">
-
-    <LinearLayout
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="match_parent">
-        android:gravity="center_vertical"
-        android:orientation="horizontal">
 
-        <ImageButton
+        <LinearLayout
-            android:id="@+id/backButton"
-            android:layout_width="48dp"
-            android:layout_height="48dp"
-            android:background="?attr/selectableItemBackgroundBorderless"
-            android:contentDescription="@string/back"
-            android:src="@drawable/ic_back"
-            app:tint="?attr/colorOnSurface" />
-
-        <TextView
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="8dp"
-            android:text="@string/settings_title"
-            android:textSize="24sp"
-            android:textStyle="bold" />
-    </LinearLayout>
-
-    <com.google.android.material.textfield.TextInputLayout
-        android:id="@+id/nameLayout"
-        style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="32dp"
-        android:hint="@string/name_hint"
-        app:helperText="@string/name_helper">
-
-        <com.google.android.material.textfield.TextInputEditText
-            android:id="@+id/nameInput"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:inputType="textPersonName"
+            android:orientation="vertical"
-            android:maxLength="40" />
+            android:padding="24dp">
-    </com.google.android.material.textfield.TextInputLayout>
 
-    <com.google.android.material.textfield.TextInputLayout
+            <LinearLayout
-        android:id="@+id/phonesLayout"
+                android:layout_width="match_parent"
-        style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
+                android:layout_height="wrap_content"
-        android:layout_width="match_parent"
+                android:gravity="center_vertical"
-        android:layout_height="wrap_content"
+                android:orientation="horizontal">
-        android:layout_marginTop="24dp"
-        android:hint="@string/phones_hint"
-        app:helperText="@string/phones_helper">
 
-        <com.google.android.material.textfield.TextInputEditText
+                <ImageButton
-            android:id="@+id/phonesInput"
+                    android:id="@+id/backButton"
-            android:layout_width="match_parent"
+                    android:layout_width="48dp"
-            android:layout_height="wrap_content"
+                    android:layout_height="48dp"
-            android:inputType="text" />
+                    android:background="?attr/selectableItemBackgroundBorderless"
-    </com.google.android.material.textfield.TextInputLayout>
+                    android:contentDescription="@string/back"
+                    android:src="@drawable/ic_back"
+                    app:tint="?attr/colorOnSurface" />
 
-    <com.google.android.material.button.MaterialButton
+                <TextView
-        android:id="@+id/saveButton"
+                    android:layout_width="wrap_content"
-        android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
-        android:layout_height="56dp"
+                    android:layout_marginStart="8dp"
-        android:layout_marginTop="32dp"
+                    android:text="@string/settings_title"
-        android:text="@string/save"
+                    android:textSize="24sp"
-        android:textSize="16sp"
+                    android:textStyle="bold" />
-        app:backgroundTint="@color/brand_blue"
+            </LinearLayout>
-        app:cornerRadius="16dp" />
 
-</LinearLayout>
+            <com.google.android.material.textfield.TextInputLayout
+                android:id="@+id/nameLayout"
+                style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="24dp"
+                android:hint="@string/name_hint"
+                app:helperText="@string/name_helper">
+
+                <com.google.android.material.textfield.TextInputEditText
+                    android:id="@+id/nameInput"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:inputType="textPersonName"
+                    android:maxLength="40" />
+            </com.google.android.material.textfield.TextInputLayout>
+
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="32dp"
+                android:text="@string/groups_title"
+                android:textSize="18sp"
+                android:textStyle="bold" />
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:text="@string/groups_help"
+                android:textColor="?attr/colorOnSurfaceVariant"
+                android:textSize="13sp" />
+
+            <LinearLayout
+                android:id="@+id/groupsList"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="12dp"
+                android:orientation="vertical" />
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/addGroupButton"
+                android:layout_width="match_parent"
+                android:layout_height="52dp"
+                android:layout_marginTop="16dp"
+                android:text="@string/add_group"
+                app:backgroundTint="@color/brand_blue"
+                app:cornerRadius="14dp" />
+
+        </LinearLayout>
+    </ScrollView>
 </FrameLayout>

app/src/main/res/layout/dialog_group.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:paddingStart="24dp"
+    android:paddingTop="16dp"
+    android:paddingEnd="24dp">
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/groupNameLayout"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:hint="@string/group_name_hint">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/groupNameInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="text"
+            android:maxLength="24" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/groupPhonesLayout"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:hint="@string/phones_hint"
+        app:helperText="@string/phones_helper">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/groupPhonesInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="text" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+</LinearLayout>

app/src/main/res/layout/item_group.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginBottom="10dp"
+    android:clickable="true"
+    android:focusable="true"
+    app:cardCornerRadius="14dp"
+    app:cardElevation="2dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="14dp">
+
+        <TextView
+            android:id="@+id/groupName"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textSize="16sp"
+            android:textStyle="bold" />
+
+        <TextView
+            android:id="@+id/groupPhones"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="2dp"
+            android:textColor="?attr/colorOnSurfaceVariant"
+            android:textSize="14sp" />
+    </LinearLayout>
+</com.google.android.material.card.MaterialCardView>

app/src/main/res/values/strings.xml

@@ -6,14 +6,28 @@
 
     <!-- Écran principal -->
     <string name="send_button">ENVOYER\nMA POSITION</string>
-    <string name="recipients_label">Destinataires — toucher pour modifier</string>
+    <string name="recipients_label">Groupe de destinataires — toucher pour gérer</string>
-    <string name="recipients_none">Aucun destinataire configuré.\nTouchez ici pour en ajouter.</string>
+    <string name="recipients_none">Aucun groupe de destinataires.\nTouchez ici pour en créer un.</string>
+
+    <!-- Groupes -->
+    <string name="groups_title">Groupes de destinataires</string>
+    <string name="groups_help">Créez des groupes (famille, amis, collègues…) et choisissez le groupe actif sur l\'écran principal.</string>
+    <string name="default_group_name">Mes contacts</string>
+    <string name="group_active_suffix">%1$s ✓ (groupe actif)</string>
+    <string name="group_new">Nouveau groupe</string>
+    <string name="group_edit">Modifier le groupe</string>
+    <string name="group_name_hint">Nom du groupe</string>
+    <string name="add_group">+ Ajouter un groupe</string>
+    <string name="no_groups">Aucun groupe pour l\'instant.</string>
+    <string name="delete">Supprimer</string>
+    <string name="error_no_group_name">Donnez un nom au groupe</string>
+    <string name="error_dup_group">Un groupe porte déjà ce nom</string>
 
     <!-- Statuts -->
     <string name="status_locating">Recherche de votre position…</string>
     <string name="status_fallback">GPS lent — utilisation de la dernière position connue…</string>
     <string name="status_no_location">❌ Position introuvable. Vérifiez que la localisation est activée, puis réessayez.</string>
-    <string name="status_no_recipients">Ajoutez d\'abord un destinataire.</string>
+    <string name="status_no_recipients">Créez d\'abord un groupe de destinataires.</string>
     <string name="status_need_permissions">❌ Les autorisations SMS et localisation sont nécessaires pour envoyer votre position.</string>
     <string name="status_sending_progress">Envoi des SMS… (%1$d/%2$d)</string>
     <string name="status_sent_ok">✅ Position envoyée à %1$d destinataire(s)</string>