1、升级库：keyboard_actions

lib/utils/toast_util.dart

+import 'package:flutter/material.dart';
+import 'package:fluttertoast/fluttertoast.dart';
+
+class ToastUtil {
+  static void showToast(String txt) {
+    if(txt.isEmpty){
+      txt = "信息异常";
+    }
+    Fluttertoast.showToast(
+        msg: txt,
+        toastLength: Toast.LENGTH_SHORT,
+        gravity: ToastGravity.BOTTOM,
+        // timeInSecForIos: 1,
+        backgroundColor: Colors.grey,
+        textColor: Colors.white,
+        fontSize: 16.0);
+  }
+}
\ No newline at end of file

pubspec.yaml

@@ -15,7 +15,7 @@ dependencies:
   # 时间选择器 https://pub.dev/packages/flutter_cupertino_datetime_picker
   flutter_cupertino_datetime_picker: 3.0.0
   # 键盘工具类 https://pub.dev/packages/keyboard_actions
-  keyboard_actions: 3.4.7
+  keyboard_actions: 4.0.1
   # Flutter常用工具类库 https://pub.dev/packages/flustars
   flustars: 2.0.1
   # sp https://pub.dev/packages/sp_util