Changed the FlatButtons to Elevated ones, because flutter no longer supports them.

Author: alboom4ick

lib/components/ButtonDouble.dart

@@ -44,7 +44,7 @@ class _ButtonState extends State<ButtonDoubleComponent> {
     return (Container(
         height: 60,
         width: 90,
-        child: FlatButton(
+        child: ElevatedButton(
           onPressed: () {
             _sendMessage(buttonClicado ? widget.comandOn! : widget.comandOff!);
             _changeButtonColor();
@@ -53,10 +53,15 @@ class _ButtonState extends State<ButtonDoubleComponent> {
             widget.buttonName!,
             style: TextStyle(color: Colors.white),
           ),
-          color: buttonClicado
-              ? Color.fromRGBO(237, 46, 39, 1)
-              : Color.fromRGBO(0, 0, 0, 1),
-          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(5)),
+          style: ButtonStyle(
+              backgroundColor: WidgetStatePropertyAll(
+                buttonClicado
+                    ? Color.fromRGBO(237, 46, 39, 1)
+                    : Color.fromRGBO(0, 0, 0, 1),
+              ),
+              shape: WidgetStatePropertyAll(
+                RoundedRectangleBorder(borderRadius: BorderRadius.circular(5)),
+              )),
         )));
   }
 

lib/components/ButtonSingle.dart

@@ -39,16 +39,18 @@ class _ButtonState extends State<ButtonSingleComponent> {
     return (Container(
         height: 60,
         width: 80,
-        child: FlatButton(
+        child: ElevatedButton(
           onPressed: () {
             _sendMessage(widget.comandOn!);
           },
           child: Text(
             widget.buttonName!,
             style: TextStyle(color: Colors.white, fontSize: 25),
           ),
-          color: widget.colorButton!,
-          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(5)),
+          style: ButtonStyle(
+              backgroundColor: WidgetStatePropertyAll(widget.colorButton!),
+              shape: WidgetStatePropertyAll(RoundedRectangleBorder(
+                  borderRadius: BorderRadius.circular(5)))),
         )));
   }
 

lib/components/CustomAppBar.dart

@@ -65,9 +65,10 @@ class CustomAppBar extends StatelessWidget implements PreferredSizeWidget {
                           : Icons.bluetooth_disabled),
                       style: ElevatedButton.styleFrom(
                           shape: CircleBorder(),
-                          primary: StatusConnectionProvider.device != null
-                              ? Color.fromRGBO(15, 171, 118, 1)
-                              : Colors.black),
+                          backgroundColor:
+                              StatusConnectionProvider.device != null
+                                  ? Color.fromRGBO(15, 171, 118, 1)
+                                  : Colors.black),
                     )
                   : SizedBox.shrink());
             }),

lib/components/VoiceButtonPage.dart

@@ -7,7 +7,6 @@ import 'dart:typed_data';
 import 'package:flutter_bluetooth_serial/flutter_bluetooth_serial.dart';
 import 'package:flutter_speech/flutter_speech.dart';
 
-
 class VoiceButtonComponent extends StatefulWidget {
   final BluetoothConnection? connection;
   final int clientID;
@@ -18,7 +17,7 @@ class VoiceButtonComponent extends StatefulWidget {
     this.languageSelected,
     required this.clientID,
   }) : super(key: key);
-  _VoiceButtonState createState() => _VoiceButtonState();  
+  _VoiceButtonState createState() => _VoiceButtonState();
 }
 
 class Language {
@@ -41,12 +40,11 @@ class _Message {
   _Message(this.whom, this.text);
 }
 
-
 class _VoiceButtonState extends State<VoiceButtonComponent> {
   bool buttonClicado = false;
   final TextEditingController textEditingController = TextEditingController();
   List<_Message> messages = <_Message>[];
-  
+
   late SpeechRecognition _speech;
   bool _speechRecognitionAvailable = false;
   bool _isListening = false;
@@ -65,7 +63,15 @@ class _VoiceButtonState extends State<VoiceButtonComponent> {
     _speech.setRecognitionResultHandler(onRecognitionResult);
     _speech.setRecognitionCompleteHandler(onRecognitionComplete);
     _speech.setErrorHandler(errorHandler);
-    _speech.activate(languages.firstWhere((l) => l.code == (widget.languageSelected == null ? 'pt_BR' : widget.languageSelected!)).code).then((res) {
+    _speech
+        .activate(languages
+            .firstWhere((l) =>
+                l.code ==
+                (widget.languageSelected == null
+                    ? 'pt_BR'
+                    : widget.languageSelected!))
+            .code)
+        .then((res) {
       setState(() => _speechRecognitionAvailable = res);
     });
   }
@@ -89,9 +95,15 @@ class _VoiceButtonState extends State<VoiceButtonComponent> {
     }
   }
 
-
-  void start() => _speech.activate(
-    languages.firstWhere((l) => l.code == (widget.languageSelected == null ? 'pt_BR' : widget.languageSelected!)).code).then((_) {
+  void start() => _speech
+          .activate(languages
+              .firstWhere((l) =>
+                  l.code ==
+                  (widget.languageSelected == null
+                      ? 'pt_BR'
+                      : widget.languageSelected!))
+              .code)
+          .then((_) {
         return _speech.listen().then((result) {
           print('_MyAppState.start => result $result');
           setState(() {
@@ -110,7 +122,6 @@ class _VoiceButtonState extends State<VoiceButtonComponent> {
   void onSpeechAvailability(bool result) =>
       setState(() => _speechRecognitionAvailable = result);
 
-
   void onRecognitionStarted() {
     setState(() => _isListening = true);
   }
@@ -128,24 +139,16 @@ class _VoiceButtonState extends State<VoiceButtonComponent> {
   void errorHandler() => activateSpeechRecognizer();
 
   Widget build(BuildContext context) {
-  return (ElevatedButton(          
-          onPressed:  _speechRecognitionAvailable && !_isListening
-                        ? () => start()
-                        : null,                        
-          child: Icon(
-            _isListening
-                        ? Icons.settings_voice
-                        : Icons.settings_voice_outlined,                        
-          ),
-          style: ElevatedButton.styleFrom(
-                          shape: CircleBorder(),                          
-                          primary: _isListening
-                              ? Color.fromRGBO(255, 255, 0, 1)
-                              : Colors.black),
-          
-        ));
+    return (ElevatedButton(
+      onPressed:
+          _speechRecognitionAvailable && !_isListening ? () => start() : null,
+      child: Icon(
+        _isListening ? Icons.settings_voice : Icons.settings_voice_outlined,
+      ),
+      style: ElevatedButton.styleFrom(
+          shape: CircleBorder(),
+          backgroundColor:
+              _isListening ? Color.fromRGBO(255, 255, 0, 1) : Colors.black),
+    ));
   }
-
-  
-
-}
+}