原先的src文件夹只有小米便签的六个包，现在调整为小米便签项目的代码结构，包含java文件夹和res文件夹

src/java/net/micode/notes/MainActivity.java

@@ -0,0 +1,69 @@
+package net.micode.notes;
+
+import android.os.Bundle;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+/**
+ * 应用主入口类，负责初始化应用界面和基础配置
+ * <p>
+ * 核心职责：
+ * <ul>
+ *   <li>作为应用的启动Activity，处理应用初始化逻辑</li>
+ *   <li>配置边缘到边缘（EdgeToEdge）显示模式</li>
+ *   <li>设置窗口Insets监听器，适配系统状态栏和导航栏</li>
+ * </ul>
+ * <p>
+ * 设计意图：
+ * <ul>
+ *   <li>提供简洁的主界面入口，将具体功能委托给其他组件</li>
+ *   <li>适配Android 11+的边缘到边缘显示特性</li>
+ *   <li>确保界面在不同设备上的正确显示</li>
+ * </ul>
+ * <p>
+ * 继承关系：
+ * <ul>
+ *   <li>直接继承自{@link androidx.appcompat.app.AppCompatActivity}，使用 AppCompat 库提供的兼容特性</li>
+ * </ul>
+ *
+ * @author Micode Team
+ * @since 1.0.0
+ */
+public class MainActivity extends AppCompatActivity {
+
+    /**
+     * 初始化Activity，设置布局和窗口配置
+     * <p>
+     * 业务逻辑：
+     * <ul>
+     *   <li>调用父类onCreate方法完成基础初始化</li>
+     *   <li>启用边缘到边缘显示模式，充分利用屏幕空间</li>
+     *   <li>设置Activity布局为activity_main</li>
+     *   <li>注册窗口Insets监听器，动态调整视图内边距以适配系统UI</li>
+     * </ul>
+     * <p>
+     * 与其他类的交互：
+     * <ul>
+     *   <li>使用{@link EdgeToEdge}工具类启用边缘到边缘显示</li>
+     *   <li>通过{@link ViewCompat}设置窗口Insets监听器</li>
+     *   <li>与系统UI框架交互，获取系统状态栏和导航栏的尺寸</li>
+     * </ul>
+     *
+     * @param savedInstanceState 保存的实例状态，用于恢复Activity状态
+     */
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_main);
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
+            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
+            return insets;
+        });
+    }
+}

src/res/color/primary_text_dark.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+  <item android:state_pressed="true" android:color="#88555555" />
+  <item android:state_selected="true" android:color="#ff999999" />
+  <item android:color="#ff000000" />
+</selector>

src/res/color/secondary_text_dark.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+  <item android:color="#50000000" />
+</selector>