diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 2dd2e61..7259456 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -45,6 +45,7 @@ android {
 }
 
 dependencies {
+    implementation(fileTree(mapOf("dir" to "libs", "include" to listOf("*.jar"))))
     implementation("com.jakewharton.timber:timber:5.0.1")
     implementation("io.github.justson:agentweb-core:v5.1.1-androidx")
     implementation("com.github.Justson:Downloader:v5.0.4-androidx")
diff --git a/app/libs/DP_SerialportList1.3.jar b/app/libs/DP_SerialportList1.3.jar
new file mode 100644
index 0000000..d1e199c
Binary files /dev/null and b/app/libs/DP_SerialportList1.3.jar differ
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 5002e62..dc4fc9d 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -47,6 +47,12 @@
             android:label="@string/app_name"
             android:theme="@style/Theme.StandAPP" />
 
+        <activity
+            android:name=".printer.PrintTestActivity"
+            android:exported="false"
+            android:label="打印测试"
+            android:theme="@style/Theme.AppCompat.Light.DarkActionBar" />
+
         <activity
             android:name="com.example.kingway.ptt.pttActivity"
             android:exported="false"
diff --git a/app/src/main/assets/1.jpg b/app/src/main/assets/1.jpg
new file mode 100644
index 0000000..ae7de65
Binary files /dev/null and b/app/src/main/assets/1.jpg differ
diff --git a/app/src/main/assets/2.jpg b/app/src/main/assets/2.jpg
new file mode 100644
index 0000000..c37740d
Binary files /dev/null and b/app/src/main/assets/2.jpg differ
diff --git a/app/src/main/java/com/stand/standapp/LoginActivity.kt b/app/src/main/java/com/stand/standapp/LoginActivity.kt
index 8a96042..0cfadb2 100644
--- a/app/src/main/java/com/stand/standapp/LoginActivity.kt
+++ b/app/src/main/java/com/stand/standapp/LoginActivity.kt
@@ -24,6 +24,7 @@ class LoginActivity : AppCompatActivity() {
         val cbRemember = findViewById<CheckBox>(R.id.cb_remember)
         val btnLogin = findViewById<Button>(R.id.btn_login)
         val btnPttExample = findViewById<Button>(R.id.btn_ptt_example)
+        val btnPrinterTest = findViewById<Button>(R.id.btn_printer_test)
         val ivSettings = findViewById<ImageView>(R.id.iv_settings)
 
         // 1. 加载保存的状态和凭据
@@ -59,7 +60,17 @@ class LoginActivity : AppCompatActivity() {
                 val intent = Intent(this, com.example.kingway.ptt.pttActivity::class.java)
                 startActivity(intent)
             } catch (e: Exception) {
-                Toast.makeText(this, "打开 PTT 示例失败: ${e.message}", Toast.LENGTH_SHORT).show()
+                Toast.makeText(this, "打开 PTT 示例失败: ${e.message}", Toast.LENGTH_SHORT).show();
+            }
+        }
+
+        // 5. 打印测试按钮点击事件
+        btnPrinterTest.setOnClickListener {
+            try {
+                val intent = Intent(this, com.stand.standapp.printer.PrintTestActivity::class.java)
+                startActivity(intent)
+            } catch (e: Exception) {
+                Toast.makeText(this, "打开打印测试失败: ${e.message}", Toast.LENGTH_SHORT).show()
             }
         }
     }
diff --git a/app/src/main/java/com/stand/standapp/printer/PrintTestActivity.java b/app/src/main/java/com/stand/standapp/printer/PrintTestActivity.java
new file mode 100644
index 0000000..991e2a4
--- /dev/null
+++ b/app/src/main/java/com/stand/standapp/printer/PrintTestActivity.java
@@ -0,0 +1,218 @@
+package com.stand.standapp.printer;
+
+import android.content.res.AssetManager;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.Spinner;
+import android.widget.TextView;
+import android.widget.Toast;
+import android.widget.CheckBox;
+import android.widget.EditText;
+import android.widget.CompoundButton;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.dp.dp_serialportlist.Serialport_Factory;
+import com.stand.standapp.R;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+public class PrintTestActivity extends AppCompatActivity implements View.OnClickListener {
+
+    static {
+        try {
+            System.loadLibrary("szzkserialport");
+        } catch (UnsatisfiedLinkError e) {
+            e.printStackTrace();
+        }
+    }
+
+    private Spinner spPortPath, spBaudrate;
+    private EditText etManualPath;
+    private CheckBox cbManualMode;
+    private Button btnOpen;
+    private TextView tvStatus;
+    
+    private Serialport_Factory sf;
+    private String[] portNames;
+
+    private Handler mHandler = new Handler(new Handler.Callback() {
+        @Override
+        public boolean handleMessage(Message msg) {
+            if (msg.what == Serialport_Factory.PAPER_STATE) {
+                boolean hasPaper = msg.getData().getBoolean("PAPER_STATE");
+                tvStatus.setText("打印机状态: " + (hasPaper ? "有纸" : "缺纸"));
+                Toast.makeText(PrintTestActivity.this, hasPaper ? "打印机有纸" : "打印机缺纸", Toast.LENGTH_SHORT).show();
+            }
+            return true;
+        }
+    });
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_printer_test);
+
+        initViews();
+        
+        sf = Serialport_Factory.getSerialport_Factory(this, mHandler);
+        loadSerialPorts();
+    }
+
+    private void initViews() {
+        spPortPath = findViewById(R.id.sp_port_path);
+        spBaudrate = findViewById(R.id.sp_baudrate);
+        etManualPath = findViewById(R.id.et_manual_path);
+        cbManualMode = findViewById(R.id.cb_manual_mode);
+        btnOpen = findViewById(R.id.btn_open);
+        tvStatus = findViewById(R.id.tv_status);
+
+        cbManualMode.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                spPortPath.setVisibility(isChecked ? View.GONE : View.VISIBLE);
+                etManualPath.setVisibility(isChecked ? View.VISIBLE : View.GONE);
+            }
+        });
+
+        btnOpen.setOnClickListener(this);
+        findViewById(R.id.btn_print_text).setOnClickListener(this);
+        findViewById(R.id.btn_print_barcode).setOnClickListener(this);
+        findViewById(R.id.btn_print_qr).setOnClickListener(this);
+        findViewById(R.id.btn_print_img).setOnClickListener(this);
+        findViewById(R.id.btn_print_column).setOnClickListener(this);
+        findViewById(R.id.btn_print_demo1).setOnClickListener(this);
+        findViewById(R.id.btn_print_demo2).setOnClickListener(this);
+        findViewById(R.id.btn_print_test_page).setOnClickListener(this);
+        findViewById(R.id.btn_check_paper).setOnClickListener(this);
+        findViewById(R.id.btn_cut_all).setOnClickListener(this);
+        findViewById(R.id.btn_back).setOnClickListener(this);
+    }
+
+    private void loadSerialPorts() {
+        try {
+            portNames = sf.getAllDevices();
+            if (portNames != null && portNames.length > 0) {
+                ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, portNames);
+                adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+                spPortPath.setAdapter(adapter);
+            } else {
+                Toast.makeText(this, "未检测到串口设备，请检查硬件权限", Toast.LENGTH_LONG).show();
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void onClick(View v) {
+        int id = v.getId();
+        if (id == R.id.btn_open) {
+            openPort();
+        } else if (id == R.id.btn_back) {
+            finish();
+        } else {
+            if (!sf.isConnection()) {
+                Toast.makeText(this, "请先开启串口", Toast.LENGTH_SHORT).show();
+                return;
+            }
+            handlePrintAction(id);
+        }
+    }
+
+    private void openPort() {
+        String path;
+        if (cbManualMode.isChecked()) {
+            path = etManualPath.getText().toString().trim();
+        } else {
+            if (spPortPath.getSelectedItem() == null) return;
+            path = spPortPath.getSelectedItem().toString();
+        }
+        
+        String baudrate = spBaudrate.getSelectedItem().toString();
+        if (sf.OpenPort(path, baudrate)) {
+            tvStatus.setText("状态: 已连接 (" + path + ")");
+            tvStatus.setTextColor(0xFF4CAF50);
+            Toast.makeText(this, "串口已开启", Toast.LENGTH_SHORT).show();
+        } else {
+            tvStatus.setText("状态: 连接失败");
+            tvStatus.setTextColor(0xFFFF0000);
+            Toast.makeText(this, "串口开启失败", Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private void handlePrintAction(int id) {
+        if (id == R.id.btn_print_text) {
+            sf.PrintText("StandAPP 打印测试", 2, 1, 30);
+            sf.PrintText("文本内容居左测试", 1, 1, 20);
+            sf.PaperCut();
+        } else if (id == R.id.btn_print_barcode) {
+            sf.PrintBarcode("88888888", 3, 100, 5, 2, 2);
+            sf.PrintText("\n", 1, 1, 50);
+            sf.PaperCut();
+        } else if (id == R.id.btn_print_qr) {
+            sf.PrintQR("StandAPP-Integrated", 6, 2);
+            sf.PrintText("\n", 1, 1, 50);
+            sf.PaperCut();
+        } else if (id == R.id.btn_print_img) {
+            Bitmap bm = getImageFromAssetsFile("1.jpg");
+            if (bm != null) {
+                sf.PrintImage(bm, 384, 0, 2);
+                sf.PrintText("\n", 1, 1, 50);
+                sf.PaperCut();
+            }
+        } else if (id == R.id.btn_print_column) {
+            sf.Printcolumncontent("项目", 0, "单价", 180, "数量", 250, "金额", 320);
+            sf.Printcolumncontent("测试商品", 0, "10.0", 180, "1", 250, "10.0", 320, 70);
+            sf.PrintText("\n", 1, 1, 50);
+            sf.PaperCut();
+        } else if (id == R.id.btn_print_demo1) {
+            printDemo(false);
+        } else if (id == R.id.btn_print_demo2) {
+            printDemo(true);
+        } else if (id == R.id.btn_print_test_page) {
+            sf.PrintTestPage();
+        } else if (id == R.id.btn_check_paper) {
+            sf.Check_Paper();
+        } else if (id == R.id.btn_cut_all) {
+            sf.PaperAllCut();
+        }
+    }
+
+    private void printDemo(boolean is3Inch) {
+        int width = is3Inch ? 400 : 300;
+        int right = is3Inch ? 120 : 100;
+        sf.PrintText("\nStandAPP 业务测试单", 2, 1, 30);
+        sf.PrintText("--------------------------------", 1, 1, 10);
+        sf.Printcolumncontent("名称", 0, "单价", 180, "数量", 250, "金额", width);
+        sf.Printcolumncontent("演示商品A", 0, "9.9", 180, "1", 250, "9.90", width, right);
+        sf.PrintText("--------------------------------", 1, 1, 10);
+        sf.PrintQR("http://www.standapp.com", 6, 2);
+        sf.PrintText("\n\n\n", 1, 1, 10);
+        sf.PaperCut();
+    }
+
+    private Bitmap getImageFromAssetsFile(String fileName) {
+        try {
+            InputStream is = getAssets().open(fileName);
+            Bitmap bitmap = BitmapFactory.decodeStream(is);
+            is.close();
+            return bitmap;
+        } catch (IOException e) {
+            return null;
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (sf != null) sf.Disconnect();
+    }
+}
diff --git a/app/src/main/jniLibs/armeabi-v7a/libszzkserialport.so b/app/src/main/jniLibs/armeabi-v7a/libszzkserialport.so
new file mode 100644
index 0000000..57fd404
Binary files /dev/null and b/app/src/main/jniLibs/armeabi-v7a/libszzkserialport.so differ
diff --git a/app/src/main/jniLibs/armeabi/libszzkserialport.so b/app/src/main/jniLibs/armeabi/libszzkserialport.so
new file mode 100644
index 0000000..c5ae86a
Binary files /dev/null and b/app/src/main/jniLibs/armeabi/libszzkserialport.so differ
diff --git a/app/src/main/jniLibs/x86/libszzkserialport.so b/app/src/main/jniLibs/x86/libszzkserialport.so
new file mode 100644
index 0000000..d523dd4
Binary files /dev/null and b/app/src/main/jniLibs/x86/libszzkserialport.so differ
diff --git a/app/src/main/res/layout/activity_login.xml b/app/src/main/res/layout/activity_login.xml
index 1c28885..9da0246 100644
--- a/app/src/main/res/layout/activity_login.xml
+++ b/app/src/main/res/layout/activity_login.xml
@@ -133,11 +133,21 @@
             android:id="@+id/btn_ptt_example"
             android:layout_width="match_parent"
             android:layout_height="50dp"
+            android:layout_marginBottom="10dp"
             android:background="@drawable/shape_button_login"
             android:text="PTT 示例"
             android:textColor="#FFFFFF"
             android:textSize="16sp" />
 
+        <Button
+            android:id="@+id/btn_printer_test"
+            android:layout_width="match_parent"
+            android:layout_height="50dp"
+            android:background="@drawable/shape_button_login"
+            android:text="打印测试"
+            android:textColor="#FFFFFF"
+            android:textSize="16sp" />
+
         </LinearLayout>
     </androidx.constraintlayout.widget.ConstraintLayout>
 
diff --git a/app/src/main/res/layout/activity_printer_test.xml b/app/src/main/res/layout/activity_printer_test.xml
new file mode 100644
index 0000000..6e04633
--- /dev/null
+++ b/app/src/main/res/layout/activity_printer_test.xml
@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#F5F5F5">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp">
+
+        <RelativeLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="16dp">
+            <Button
+                android:id="@+id/btn_back"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="返回" />
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerInParent="true"
+                android:text="串口打印集成测试"
+                android:textSize="18sp"
+                android:textStyle="bold" />
+        </RelativeLayout>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="1. 串口配置"
+            android:textStyle="bold" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:background="#FFFFFF"
+            android:orientation="vertical"
+            android:padding="8dp">
+
+            <Spinner
+                android:id="@+id/sp_port_path"
+                android:layout_width="match_parent"
+                android:layout_height="48dp" />
+
+            <EditText
+                android:id="@+id/et_manual_path"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:hint="手动路径 (如 /dev/ttyS0)"
+                android:visibility="gone" />
+
+            <CheckBox
+                android:id="@+id/cb_manual_mode"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="手动输入模式" />
+
+            <Spinner
+                android:id="@+id/sp_baudrate"
+                android:layout_width="match_parent"
+                android:layout_height="48dp"
+                android:entries="@array/baudrates" />
+
+            <Button
+                android:id="@+id/btn_open"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="8dp"
+                android:text="打开串口" />
+
+            <TextView
+                android:id="@+id/tv_status"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:layout_marginTop="4dp"
+                android:text="状态: 未连接"
+                android:textColor="#FF0000" />
+        </LinearLayout>
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:text="2. 打印操作"
+            android:textStyle="bold" />
+
+        <GridLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:columnCount="2">
+
+            <Button android:id="@+id/btn_print_text" android:text="打印文本" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_print_barcode" android:text="打印条码" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_print_qr" android:text="打印二维码" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_print_img" android:text="打印图片" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_print_column" android:text="多列排版" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_print_demo1" android:text="2寸样单" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_print_demo2" android:text="3寸样单" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_print_test_page" android:text="打印自检" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_check_paper" android:text="缺纸检测" android:layout_columnWeight="1"/>
+            <Button android:id="@+id/btn_cut_all" android:text="全切纸" android:layout_columnWeight="1"/>
+        </GridLayout>
+
+    </LinearLayout>
+</ScrollView>
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
new file mode 100644
index 0000000..eaffb97
--- /dev/null
+++ b/app/src/main/res/values/arrays.xml
@@ -0,0 +1,9 @@
+<resources>
+    <string-array name="baudrates">
+        <item>9600</item>
+        <item>19200</item>
+        <item>38400</item>
+        <item>57600</item>
+        <item>115200</item>
+    </string-array>
+</resources>