Update onChange docs to Radio and RadioListTile

Added note that onChange callback will not be invoked if the radio is already selected
Wakever · Apr 27, 2019 · 59f4e92 · 59f4e92
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diff --git a/packages/flutter/lib/src/material/radio.dart b/packages/flutter/lib/src/material/radio.dart
@@ -129,6 +129,9 @@ class Radio<T> extends StatefulWidget {
   ///
   /// If null, the radio button will be displayed as disabled.
   ///
+  /// The provided callback will not be invoked if this radio button is already
+  /// selected.
+  ///
   /// The callback provided to [onChanged] should update the state of the parent
   /// [StatefulWidget] using the [State.setState] method, so that the parent
   /// gets rebuilt; for example:

diff --git a/packages/flutter/lib/src/material/radio_list_tile.dart b/packages/flutter/lib/src/material/radio_list_tile.dart
@@ -129,6 +129,9 @@ class RadioListTile<T> extends StatelessWidget {
   ///
   /// If null, the radio button will be displayed as disabled.
   ///
+  /// The provided callback will not be invoked if this radio button is already
+  /// selected.
+  ///
   /// The callback provided to [onChanged] should update the state of the parent
   /// [StatefulWidget] using the [State.setState] method, so that the parent
   /// gets rebuilt; for example: