loading circular

covas_mobile/lib/pages/DisplayPictureScreen.dart

@@ -54,14 +54,30 @@ class DisplayPictureScreen extends StatefulWidget {
 
 // A widget that displays the picture taken by the user.
 class DisplayPictureScreenState extends State<DisplayPictureScreen>
-    with ShowDescImageAdd, ShowErrorDialog {
+    with ShowDescImageAdd, ShowErrorDialog, TickerProviderStateMixin {
+  late AnimationController controller;
   @override
   void initState() {
+    controller = AnimationController(
+      /// [AnimationController]s can be created with `vsync: this` because of
+      /// [TickerProviderStateMixin].
+      vsync: this,
+      duration: const Duration(seconds: 5),
+    )..addListener(() {
+        setState(() {});
+      });
+    controller.repeat(reverse: false);
     super.initState();
 
     _getEventInfosFromImage();
   }
 
+  @override
+  void dispose() {
+    controller.dispose();
+    super.dispose();
+  }
+
   Future<void> displayError(String e) async {
     print("problem gemini : ${e}");
     showErrorDialog(context,
@@ -128,10 +144,19 @@ class DisplayPictureScreenState extends State<DisplayPictureScreen>
         appBar: AppBar(title: const Text('Display the Picture')),
         // The image is stored as a file on the device. Use the `Image.file`
         // constructor with the given path to display the image.
-        body: SingleChildScrollView(
-            child: Column(children: <Widget>[
-          Image.file(File(widget.imagePath)),
-          Text("Analyse en cours...")
+        body: Padding(
+            padding: const EdgeInsets.all(20.0),
+            child: Column(
+                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+                children: <Widget>[
+                  Text(
+                    'Analyse de l\'image en cours',
+                    style: Theme.of(context).textTheme.titleLarge,
+                  ),
+                  CircularProgressIndicator(
+                    value: controller.value,
+                    semanticsLabel: 'Loading progress',
+                  ),
                 ])));
   }
 }