结构初始化

lib/data/provider/debug.dart

@@ -0,0 +1,65 @@
+import 'package:flutter/material.dart';
+
+class DebugProvider extends ChangeNotifier {
+  final widgets = <Widget>[];
+
+  void addText(String text) {
+    _addText(text);
+    notifyListeners();
+  }
+
+  void _addText(String text) {
+    _addWidget(Text(text));
+  }
+
+  void addError(Object error) {
+    _addError(error);
+    notifyListeners();
+  }
+
+  void _addError(Object error) {
+    _addMultiline(error, Colors.red);
+  }
+
+  void addMultiline(Object data, [Color color = Colors.blue]) {
+    _addMultiline(data, color);
+    notifyListeners();
+  }
+
+  void _addMultiline(Object data, [Color color = Colors.blue]) {
+    final widget = Text(
+      '$data',
+      style: TextStyle(
+        color: color,
+      ),
+    );
+    _addWidget(SingleChildScrollView(
+      child: widget,
+      scrollDirection: Axis.horizontal,
+    ));
+  }
+
+  void addWidget(Widget widget) {
+    _addWidget(widget);
+    notifyListeners();
+  }
+
+  void _addWidget(Widget widget) {
+    final outlined = Container(
+      margin: const EdgeInsets.symmetric(vertical: 2),
+      decoration: BoxDecoration(
+        border: Border.all(
+          color: Colors.green,
+        ),
+      ),
+      child: widget,
+    );
+
+    widgets.add(outlined);
+  }
+
+  void clear() {
+    widgets.clear();
+    notifyListeners();
+  }
+}