Merge pull request YYFlutter#36 from darkmehmet/radioListinititialValueFeature

Radio List Inititial value (initial selected item)

Author: AndroidHensen

example/lib/dialog/listview_dialog.dart

@@ -63,54 +63,63 @@ var radioItems = [
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "None",
+    value: 1,
     color: Colors.black,
     fontSize: 16.0,
   ),
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "Callisto",
+    value: 11,
     color: Colors.black,
     fontSize: 16.0,
   ),
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "Ganymede",
+    value: 7,
     color: Colors.black,
     fontSize: 16.0,
   ),
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "Luna",
+    value: 6,
     color: Colors.black,
     fontSize: 16.0,
   ),
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "Oberon",
+    value: 4,
     color: Colors.black,
     fontSize: 16.0,
   ),
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "Phobos",
+    value: 18,
     color: Colors.black,
     fontSize: 16.0,
   ),
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "Dione",
+    value: 16,
     color: Colors.black,
     fontSize: 16.0,
   ),
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "James",
+    value: 10,
     color: Colors.black,
     fontSize: 16.0,
   ),
   RadioItem(
     padding: EdgeInsets.only(left: 6.0),
     text: "Lina",
+    value: 25,
     color: Colors.black,
     fontSize: 16.0,
   ),
@@ -151,6 +160,7 @@ YYDialog YYListViewDialogListRadio() {
     ..listViewOfRadioButton(
         items: radioItems,
         height: 370,
+        intialValue: 7,
         activeColor: Colors.deepPurpleAccent,
         onClickItemListener: (index) {
           var radioItem = radioItems[index];

lib/flutter_custom_dialog.dart

@@ -206,6 +206,7 @@ class YYDialog {
     List<RadioItem> items,
     double height,
     Color activeColor,
+    int intialValue,
     Function(int) onClickItemListener,
   }) {
     Size size = MediaQuery.of(context).size;
@@ -219,6 +220,7 @@ class YYDialog {
         ),
         child: YYRadioListTile(
           items: items,
+          intialValue: intialValue,
           activeColor: activeColor,
           onChanged: onClickItemListener,
         ),
@@ -572,6 +574,7 @@ class RadioItem {
   RadioItem({
     this.padding,
     this.text,
+    this.value,
     this.color,
     this.fontSize,
     this.fontWeight,
@@ -580,6 +583,7 @@ class RadioItem {
 
   EdgeInsets padding;
   String text;
+  int value;
   Color color;
   double fontSize;
   FontWeight fontWeight;

lib/flutter_custom_dialog_widget.dart

@@ -7,13 +7,15 @@ class YYRadioListTile extends StatefulWidget {
   YYRadioListTile({
     Key key,
     this.items,
+    this.intialValue = 0,
     this.activeColor,
     this.onChanged,
   })  : assert(items != null),
         super(key: key);
 
   final List<RadioItem> items;
   final Color activeColor;
+  final intialValue;
   final Function(int) onChanged;
 
   @override
@@ -24,26 +26,31 @@ class YYRadioListTile extends StatefulWidget {
 
 class YYRadioListTileState extends State<YYRadioListTile> {
   var groupId = 0;
+  var selectedItem = -1;
 
   @override
   Widget build(BuildContext context) {
+    if (selectedItem == -1) {
+      selectedItem = widget.intialValue != null ? widget.intialValue : 0;
+    }
     return ListView.builder(
       padding: EdgeInsets.all(0.0),
       shrinkWrap: true,
       itemCount: widget.items.length,
       itemBuilder: (BuildContext context, int index) {
+        var radioItem = widget.items[index];
         return Material(
           color: Colors.white,
           child: RadioListTile(
-            title: Text(widget.items[index].text),
-            value: index,
-            groupValue: groupId,
+            title: Text(radioItem.text),
+            value: radioItem.value == null ? index : radioItem.value,
+            groupValue: selectedItem,
             activeColor: widget.activeColor,
             onChanged: (int value) {
               setState(() {
-                widget.onChanged(value);
-                groupId = value;
+                selectedItem = value;
               });
+              widget.onChanged(value);
             },
           ),
         );

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_custom_dialog
 description: Semantic dialog | Made In YY.inc | Welcome to contribute
-version: 1.0.16
+version: 1.0.20
 author: AndroidHensen <[email protected]>
 homepage: https://github.com/YYFlutter/flutter-custom-dialog.git