exo6 taille fixe

lib/exo6.dart

+import 'package:flutter/material.dart';
+import 'dart:math' as math;
+
+// ==============
+// Models
+// ==============
+
+math.Random random = new math.Random();
+
+class Tile {
+  Color color;
+  String index;
+
+  Tile(this.index,this.color);
+}
+
+// ==============
+// Widgets
+// ==============
+
+class TileWidget extends StatelessWidget {
+  final Tile tile;
+
+  TileWidget(this.tile);
+
+  @override
+  Widget build(BuildContext context) {
+    return this.coloredBox();
+  }
+
+  Widget coloredBox() {
+    return Container(
+        color: tile.color,
+        child: Align(
+            child: Text(tile.index.toString(),),
+            alignment: Alignment.center,
+      )
+    );
+  }
+}
+
+int emptyIndex=0;
+int size=4;
+
+List<Widget>createTileWidgets(){
+  List<Widget> tiles = <Widget>[];
+  int max=size*size;
+  tiles.add(TileWidget(Tile("Vide",Colors.white)));
+  for(int i=0;i<max-1;i++){
+    tiles.add(TileWidget(Tile((i+1).toString(), Colors.grey)));
+  }
+  return tiles;
+}
+
+String getIndex(TileWidget w){
+  return w.tile.index;
+}
+
+void main() => runApp(new MaterialApp(home: PositionedTiles()));
+
+class PositionedTiles extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => PositionedTilesState();
+}
+
+class PositionedTilesState extends State<PositionedTiles> {
+  List<Widget> tiles = createTileWidgets();
+  Widget icone = Icon(Icons.sentiment_very_satisfied);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Moving Tiles'),
+        centerTitle: true,
+      ),
+      body: GridView.builder(
+          padding: const EdgeInsets.all(10),
+          itemCount: size*size,
+          gridDelegate:SliverGridDelegateWithFixedCrossAxisCount(
+            crossAxisCount: size,
+            crossAxisSpacing: 5.0,
+            mainAxisSpacing: 5.0,
+          ),
+          itemBuilder: (BuildContext context, int index) {
+            return InkWell(
+              child: tiles[index],
+              onTap: (){
+                swapTiles(index,emptyIndex);
+              },
+            );
+          },
+        ),
+    );
+  }
+
+  swapTiles(int current, int empty) {
+    setState(() {
+      icone=Icon(Icons.favorite);
+      print(current);
+      if(current==empty+1 && current%size!=0){
+        emptyIndex=current;
+        tiles.insert(empty, tiles.removeAt(current));
+      }else if(current==empty-1  && empty%size!=0){
+        emptyIndex=current;
+        tiles.insert(empty, tiles.removeAt(current));
+      }
+      else if(current==empty+size){
+        emptyIndex=current;
+        tiles.insert(current, tiles.removeAt(empty));
+        tiles.insert(empty, tiles.removeAt(current-1));
+      }else if(current==empty-size){
+        emptyIndex=current;
+        tiles.insert(current, tiles.removeAt(empty));
+        tiles.insert(empty, tiles.removeAt(current+1));
+      }else print("Can't move this");
+    });
+  }
+}
\ No newline at end of file

lib/main.dart

@@ -4,6 +4,7 @@ import 'package:tp2_taquin/Tile.dart';
 
 import 'exo1.dart';
 import 'exo2.dart';
+import 'exo6.dart';
 
 void main() {
   runApp(MyApp());
@@ -94,6 +95,19 @@ class _MyHomePageState extends State<MyHomePage> {
                 ],
               ),
             ),
+            Card(
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                children: <Widget>[
+                  ListTile(
+                    trailing: Icon(Icons.play_arrow),
+                    title: Text('Exercice 6'),
+                    subtitle: Text("Animation des tuiles"),
+                    onTap:() {Navigator.push(context, MaterialPageRoute(builder: (context) =>PositionedTiles()));},
+                  ),
+                ],
+              ),
+            ),
             ],
           ),
         ),