更改图标、修复包名

android/app/src/main/kotlin/tech/lolli/toolbox/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.example.toolbox
+package tech.lolli.toolbox
 
 import io.flutter.embedding.android.FlutterActivity
 

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>

android/app/src/main/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#083963</color>
+</resources>

lib/page/convert.dart

@@ -102,9 +102,33 @@ class _EncodePageState extends State<EncodePage>
   Widget _buildTypeOption() {
     return Card(
       child: ExpansionTile(
-        title: Text(
+        leading: TextButton(
+          child: SizedBox(
+            width: _media.size.width * 0.2,
+            child: Row(
+            children: const [
+              Icon(Icons.change_circle),
+              Text('上下交换')
+            ],
+          ),
+          ),
+          onPressed: () {
+            final temp = _textEditingController.text;
+            _textEditingController.text = _textEditingControllerResult.text;
+            _textEditingControllerResult.text = temp;
+          },
+        ),
+        title: SizedBox(
+          width: _media.size.width * 0.4,
+          child: Row(
+            children: [
+              const VerticalDivider(width: 2, thickness: 2, indent: 2, endIndent: 2,),
+              Text(
           _typeOption[_typeOptionIndex],
           style: const TextStyle(fontSize: 16.0, fontWeight: FontWeight.w500),
+        )
+            ],
+          ),
         ),
         children: _typeOption
             .map((e) => ListTile(