diff --git a/DEV.4.5/TP/TP1-MiseEnPage/exo1/relative_layout_activity_main.xml b/DEV.4.5/TP/TP1-MiseEnPage/exo1/relative_layout_activity_main.xml
index 39cf94f..b22a22b 100644
--- a/DEV.4.5/TP/TP1-MiseEnPage/exo1/relative_layout_activity_main.xml
+++ b/DEV.4.5/TP/TP1-MiseEnPage/exo1/relative_layout_activity_main.xml
@@ -1,40 +1,38 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/main"
-    android:paddingLeft="16dp"
-    android:paddingRight="16dp"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity"
-    >
+    android:padding="16dp">
 
-    <EditText
-        android:id="@+id/champPrincipal"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_gravity="top"
-        android:layout_marginBottom="10dp"
-        android:background="@color/white"
-        />
-    <EditText
-        android:id="@+id/champSecondaire"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:layout_gravity="bottom"
-        android:gravity="bottom"
-        android:layout_toStartOf="@+id/bouton"
-        android:layout_below="@id/champPrincipal"
-        />
     <Button
-        android:id="@+id/bouton"
+        android:id="@+id/button_ok"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginStart="5dp"
-        android:layout_below="@id/champPrincipal"
-        android:text="OK"
-        android:textSize="20sp"
-        />
+        android:layout_alignParentBottom="true"
+        android:layout_alignParentEnd="true"
+        android:layout_marginStart="8dp"
+        android:text="OK" />
+
+    <EditText
+        android:id="@+id/edittext_input"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:layout_alignParentStart="true"
+        android:layout_toStartOf="@id/button_ok"
+        android:inputType="text" />
+
+    <EditText
+        android:id="@+id/edittext_chat"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_alignParentTop="true"
+        android:layout_alignParentStart="true"
+        android:layout_alignParentEnd="true"
+        android:layout_above="@id/edittext_input"
+        android:layout_marginBottom="8dp"
+        android:background="@android:drawable/edit_text"
+        android:gravity="top|start"
+        android:inputType="textMultiLine" />
+
 </RelativeLayout>
\ No newline at end of file
diff --git a/DEV.4.5/TP/TP1-MiseEnPage/linear_layout_activity_main.xml b/DEV.4.5/TP/TP1-MiseEnPage/linear_layout_activity_main.xml
deleted file mode 100644
index 03490dd..0000000
--- a/DEV.4.5/TP/TP1-MiseEnPage/linear_layout_activity_main.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/main"
-    android:paddingLeft="16dp"
-    android:paddingRight="16dp"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".MainActivity"
-    android:orientation="vertical"
-    >
-
-    <EditText
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="1"
-        android:layout_gravity="center"
-        android:gravity="top"
-        />
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal"
-        >
-        <EditText
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:layout_weight="1"
-            />
-        <Button
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_gravity="right"
-            />
-    </LinearLayout>
-</LinearLayout>
\ No newline at end of file
diff --git a/DEV.4.5/TP/TP1-MiseEnPage/relative_layout_activity_main.xml b/DEV.4.5/TP/TP1-MiseEnPage/relative_layout_activity_main.xml
deleted file mode 100644
index 39cf94f..0000000
--- a/DEV.4.5/TP/TP1-MiseEnPage/relative_layout_activity_main.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/main"
-    android:paddingLeft="16dp"
-    android:paddingRight="16dp"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".MainActivity"
-    >
-
-    <EditText
-        android:id="@+id/champPrincipal"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_gravity="top"
-        android:layout_marginBottom="10dp"
-        android:background="@color/white"
-        />
-    <EditText
-        android:id="@+id/champSecondaire"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:layout_gravity="bottom"
-        android:gravity="bottom"
-        android:layout_toStartOf="@+id/bouton"
-        android:layout_below="@id/champPrincipal"
-        />
-    <Button
-        android:id="@+id/bouton"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginStart="5dp"
-        android:layout_below="@id/champPrincipal"
-        android:text="OK"
-        android:textSize="20sp"
-        />
-</RelativeLayout>
\ No newline at end of file