add image picler

covas_mobile/lib/pages/Camera.dart

@@ -1,6 +1,8 @@
 import 'dart:async';
 import 'dart:io';
 
+import 'package:image_picker/image_picker.dart';
+
 import 'DisplayPictureScreen.dart';
 import 'package:camera/camera.dart';
 import 'package:flutter/material.dart';
@@ -63,6 +65,22 @@ class CameraState extends State<Camera> {
 
   Future<void> getCamera() async {}
 
+  Future<void> pickImage() async {
+    final imagePicker = ImagePicker();
+    final pickedFile = await imagePicker.pickImage(source: ImageSource.gallery);
+    if (pickedFile != null) {
+      await Navigator.of(context).push(
+        MaterialPageRoute(
+          builder: (context) => DisplayPictureScreen(
+            // Pass the automatically generated path to
+            // the DisplayPictureScreen widget.
+            imagePath: pickedFile.path,
+          ),
+        ),
+      );
+    }
+  }
+
   @override
   void dispose() {
     // Dispose of the controller when the widget is disposed.
@@ -95,7 +113,7 @@ class CameraState extends State<Camera> {
               mainAxisAlignment: MainAxisAlignment.center,
               children: <Widget>[
                 FloatingActionButton(
-                  onPressed: () => {},
+                  onPressed: pickImage,
                   child: Icon(Icons.photo_library),
                 ),
                 SizedBox(width: 40),