test_flutter_slider_100: 显示 value 值，限制值范围(0-100)

test_flutter_slider_100/lib/main.dart

@@ -45,7 +45,7 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  double _currentSliderValue = 0.5;
+  double _currentSliderValue = 50;
 
   void onSliderChanged(double value) {
     setState(() {
@@ -68,7 +68,19 @@ class _MyHomePageState extends State<MyHomePage> {
         crossAxisCount: 4,
         // Generate 100 widgets that display their index in the List.
         children: List.generate(100, (index) {
-          return Slider(value: _currentSliderValue, onChanged: onSliderChanged);
+          return Flex(
+            direction: Axis.horizontal,
+            children: [
+              Expanded(
+                flex: 1,
+                child: Slider(min: 0, max: 100, value: _currentSliderValue, onChanged: onSliderChanged),
+              ),
+              SizedBox(
+                width: 26,
+                child: Text(_currentSliderValue.toStringAsFixed(0)),
+              ),
+            ],
+          );
         }),
       ),
     );