se creo el xml del Login

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

@@ -32,4 +32,60 @@
         android:layout_height="wrap_content"
         android:orientation="horizontal"
         app:layout_constraintGuide_percent="0.975" />
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="350dp"
+        android:layout_height="300dp"
+        app:layout_constraintBottom_toTopOf="@+id/abajo"
+        app:layout_constraintEnd_toStartOf="@+id/derecha"
+        app:layout_constraintHorizontal_bias="0.45"
+        app:layout_constraintStart_toStartOf="@+id/izquierda"
+        app:layout_constraintTop_toTopOf="@+id/arriba">
+
+        <EditText
+            android:id="@+id/usuario"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="30dp"
+            android:ems="10"
+            android:inputType="textPersonName"
+            android:text="Name"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <EditText
+            android:id="@+id/contraseña"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="10dp"
+            android:ems="10"
+            android:inputType="textPassword"
+            android:hint="Contraseña"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/usuario" />
+
+        <Button
+            android:id="@+id/button"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="44dp"
+            android:text="Iniciar Secion"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/contraseña" />
+
+        <Button
+            android:id="@+id/button2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Registrar"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.373"
+            app:layout_constraintStart_toEndOf="@+id/button"
+            app:layout_constraintTop_toBottomOf="@+id/contraseña" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
 </androidx.constraintlayout.widget.ConstraintLayout>
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