lesson-16

Author: iamshaunjp

ninja_id/lib/main.dart

@@ -4,7 +4,15 @@ void main() => runApp(MaterialApp(
   home: NinjaCard(),
 ));
 
-class NinjaCard extends StatelessWidget {
+class NinjaCard extends StatefulWidget {
+  @override
+  _NinjaCardState createState() => _NinjaCardState();
+}
+
+class _NinjaCardState extends State<NinjaCard> {
+
+  int ninjaLevel = 0;
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -15,6 +23,15 @@ class NinjaCard extends StatelessWidget {
         backgroundColor: Colors.grey[850],
         elevation: 0.0,
       ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: () {
+          setState(() {
+            ninjaLevel += 1;
+          });
+        },
+        backgroundColor: Colors.grey[800],
+        child: Icon(Icons.add),
+      ),
       body: Padding(
         padding: const EdgeInsets.fromLTRB(30.0, 40.0, 30.0, 0),
         child: Column(
@@ -75,7 +92,7 @@ class NinjaCard extends StatelessWidget {
             ),
             SizedBox(height: 10.0),
             Text(
-              '8',
+              '$ninjaLevel',
               style: TextStyle(
                 color: Colors.amberAccent[200],
                 fontWeight: FontWeight.bold,
@@ -107,3 +124,4 @@ class NinjaCard extends StatelessWidget {
     );
   }
 }
+