src/Notes-master/.idea/workspace.xml

@@ -165,7 +165,7 @@
   <component name="ClangdSettings">
     <option name="formatViaClangd" value="false" />
   </component>
-  <component name="ExecutionTargetManager" SELECTED_TARGET="device_and_snapshot_combo_box_target[DeviceId(pluginId=LocalEmulator, isTemplate=false, identifier=path=C:\Users\fancanyu\.android\avd\Pixel_7.avd)]" />
+  <component name="ExecutionTargetManager" SELECTED_TARGET="device_and_snapshot_combo_box_target[DeviceId(pluginId=LocalEmulator, isTemplate=false, identifier=path=C:\Users\fancanyu\.android\avd\Pixel_5.avd)]" />
   <component name="ExternalProjectsData">
     <projectState path="$PROJECT_DIR$">
       <ProjectState />
@@ -188,6 +188,13 @@
       </state>
     </system>
   </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Class" />
+      </list>
+    </option>
+  </component>
   <component name="GradleScriptDefinitionsStorage" workingDir="$PROJECT_DIR$" gradleHome="C:\Users\fancanyu\.gradle\wrapper\dists\gradle-8.13-bin\bynj8867joaln2pdnozgpow3q\gradle-8.13" javaHome="D:\Program Files\AndroidStudio\jbr" gradleVersion="8.13" />
   <component name="ProjectColorInfo">{
   &quot;associatedIndex&quot;: 5

src/Notes-master/app/build/intermediates/incremental/packageDebug/tmp/debug/dex-renamer-state.txt

@@ -1,4 +1,4 @@
-#Mon Jan 19 20:21:19 CST 2026
+#Tue Jan 20 08:46:37 CST 2026
 base.0=D\:\\Projects\\Notes-master\\app\\build\\intermediates\\dex\\debug\\mergeExtDexDebug\\classes.dex
 base.1=D\:\\Projects\\Notes-master\\app\\build\\intermediates\\dex\\debug\\mergeProjectDexDebug\\0\\classes.dex
 base.2=D\:\\Projects\\Notes-master\\app\\build\\intermediates\\dex\\debug\\mergeProjectDexDebug\\11\\classes.dex

src/Notes-master/app/src/main/java/net/micode/notes/ui/NotesListActivity.java

@@ -122,6 +122,20 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        // 检查是否已经通过密码验证
+        Intent intent = getIntent();
+        boolean isPasswordVerified = intent.getBooleanExtra("PASSWORD_VERIFIED", false);
+
+        // 检查是否需要密码验证
+        if (!isPasswordVerified && PasswordVerifyActivity.isPasswordEnabled(this)) {
+            // 如果已启用密码锁且未验证，跳转到验证页面
+            Intent verifyIntent = new Intent(this, PasswordVerifyActivity.class);
+            startActivity(verifyIntent);
+            finish();
+            return;
+        }
+
         setContentView(R.layout.note_list);
         initResources();
         // 首次使用时添加引导笔记

src/Notes-master/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java

@@ -17,6 +17,9 @@ import android.preference.Preference.OnPreferenceClickListener;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceCategory;
 import android.text.TextUtils;
+import android.widget.EditText;
+import android.widget.Toast;
+import android.text.TextUtils;
 import android.text.format.DateFormat;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -45,6 +48,7 @@ public class NotesPreferenceActivity extends PreferenceActivity {
 
     private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key"; // 同步账号偏好分类键
     private static final String AUTHORITIES_FILTER_KEY = "authorities"; // 账号权限过滤键
+    private static final String PREFERENCE_PASSWORD_SETTING_KEY = "pref_key_password_setting"; // 密码锁设置偏好键
 
     private PreferenceCategory mAccountCategory; // 账号设置偏好分类
     private GTaskReceiver mReceiver; // 同步状态广播接收器
@@ -77,6 +81,21 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 Log.w(TAG, "onCreate: Account category not found");
             }
 
+            // 设置密码锁点击事件
+            Preference passwordSettingPref = findPreference(PREFERENCE_PASSWORD_SETTING_KEY);
+            if (passwordSettingPref != null) {
+                passwordSettingPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
+                    @Override
+                    public boolean onPreferenceClick(Preference preference) {
+                        showPasswordSettingDialog();
+                        return true;
+                    }
+                });
+                Log.d(TAG, "onCreate: Password setting preference found and click listener set");
+            } else {
+                Log.w(TAG, "onCreate: Password setting preference not found");
+            }
+
             mReceiver = new GTaskReceiver();
             // 注册同步服务广播过滤器
             IntentFilter filter = new IntentFilter();
@@ -458,6 +477,54 @@ public class NotesPreferenceActivity extends PreferenceActivity {
         return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
     }
 
+    /**
+     * 显示密码设置对话框
+     */
+    private void showPasswordSettingDialog() {
+        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle("密码锁设置");
+
+        // 创建密码输入框
+        final EditText passwordEditText = new EditText(this);
+        passwordEditText.setInputType(android.text.InputType.TYPE_CLASS_NUMBER | android.text.InputType.TYPE_NUMBER_VARIATION_PASSWORD);
+        passwordEditText.setHint("请输入4位数字密码");
+        passwordEditText.setFilters(new android.text.InputFilter[]{new android.text.InputFilter.LengthFilter(4)});
+        passwordEditText.setGravity(android.view.Gravity.CENTER);
+        passwordEditText.setTextSize(18f);
+        builder.setView(passwordEditText);
+
+        // 检查是否已设置密码
+        boolean isPasswordEnabled = PasswordVerifyActivity.isPasswordEnabled(this);
+        String currentPassword = PasswordVerifyActivity.getSavedPassword(this);
+
+        if (isPasswordEnabled) {
+            builder.setMessage("当前已启用密码锁，输入新密码修改，留空则取消密码锁");
+        } else {
+            builder.setMessage("设置4位数字密码启用密码锁");
+        }
+
+        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                String password = passwordEditText.getText().toString().trim();
+                if (TextUtils.isEmpty(password)) {
+                    // 取消密码锁
+                    PasswordVerifyActivity.clearPassword(NotesPreferenceActivity.this);
+                    Toast.makeText(NotesPreferenceActivity.this, "密码锁已取消", Toast.LENGTH_SHORT).show();
+                } else if (password.length() != 4) {
+                    Toast.makeText(NotesPreferenceActivity.this, "请输入4位数字密码", Toast.LENGTH_SHORT).show();
+                } else {
+                    // 设置密码
+                    PasswordVerifyActivity.setPassword(NotesPreferenceActivity.this, password);
+                    Toast.makeText(NotesPreferenceActivity.this, "密码设置成功", Toast.LENGTH_SHORT).show();
+                }
+            }
+        });
+
+        builder.setNegativeButton("取消", null);
+        builder.show();
+    }
+
     /**
      * 同步状态广播接收器
      * 接收同步服务广播，刷新UI并更新同步进度

src/Notes-master/app/src/main/java/net/micode/notes/ui/PasswordVerifyActivity.java

@@ -0,0 +1,143 @@
+package net.micode.notes.ui;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.text.TextUtils;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import net.micode.notes.R;
+
+public class PasswordVerifyActivity extends Activity implements OnClickListener {
+    public static final String PREFERENCE_PASSWORD_ENABLED = "net.micode.notes.password_enabled";
+    public static final String PREFERENCE_PASSWORD = "net.micode.notes.password";
+
+    private EditText mPasswordEditText;
+    private Button mVerifyButton;
+    private Button mForgotPasswordButton;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_password_verify);
+
+        initViews();
+    }
+
+    private void initViews() {
+        mPasswordEditText = (EditText) findViewById(R.id.et_password);
+        mVerifyButton = (Button) findViewById(R.id.btn_verify);
+        mForgotPasswordButton = (Button) findViewById(R.id.btn_forgot_password);
+
+        mVerifyButton.setOnClickListener(this);
+        mForgotPasswordButton.setOnClickListener(this);
+    }
+
+    @Override
+    public void onClick(View v) {
+        switch (v.getId()) {
+            case R.id.btn_verify:
+                verifyPassword();
+                break;
+            case R.id.btn_forgot_password:
+                showForgotPasswordDialog();
+                break;
+            default:
+                break;
+        }
+    }
+
+    private void verifyPassword() {
+        String inputPassword = mPasswordEditText.getText().toString().trim();
+        if (TextUtils.isEmpty(inputPassword)) {
+            Toast.makeText(this, "请输入密码", Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        if (inputPassword.length() != 4) {
+            Toast.makeText(this, "请输入4位数字密码", Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        String savedPassword = getSavedPassword(this);
+        if (inputPassword.equals(savedPassword)) {
+            // 密码正确，进入应用
+            Intent intent = new Intent(this, NotesListActivity.class);
+            intent.putExtra("PASSWORD_VERIFIED", true); // 添加验证通过标志
+            startActivity(intent);
+            finish();
+        } else {
+            Toast.makeText(this, "密码错误，请重新输入", Toast.LENGTH_SHORT).show();
+            mPasswordEditText.setText("");
+        }
+    }
+
+    private void showForgotPasswordDialog() {
+        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle("忘记密码")
+                .setMessage("确定要重置密码吗？")
+                .setPositiveButton("确定", new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        resetPassword();
+                    }
+                })
+                .setNegativeButton("取消", null)
+                .show();
+    }
+
+    private void resetPassword() {
+        // 重置密码
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
+        preferences.edit()
+                .putBoolean(PREFERENCE_PASSWORD_ENABLED, false)
+                .putString(PREFERENCE_PASSWORD, "")
+                .apply();
+
+        Toast.makeText(this, "密码已重置", Toast.LENGTH_SHORT).show();
+
+        // 进入应用
+        Intent intent = new Intent(this, NotesListActivity.class);
+        startActivity(intent);
+        finish();
+    }
+
+    // 静态方法：判断密码锁是否已启用
+    public static boolean isPasswordEnabled(Context context) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        return preferences.getBoolean(PREFERENCE_PASSWORD_ENABLED, false);
+    }
+
+    // 静态方法：获取保存的密码
+    public static String getSavedPassword(Context context) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        return preferences.getString(PREFERENCE_PASSWORD, "");
+    }
+
+    // 静态方法：设置密码
+    public static void setPassword(Context context, String password) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        preferences.edit()
+                .putBoolean(PREFERENCE_PASSWORD_ENABLED, true)
+                .putString(PREFERENCE_PASSWORD, password)
+                .apply();
+    }
+
+    // 静态方法：清除密码
+    public static void clearPassword(Context context) {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
+        preferences.edit()
+                .putBoolean(PREFERENCE_PASSWORD_ENABLED, false)
+                .putString(PREFERENCE_PASSWORD, "")
+                .apply();
+    }
+}