diff --git a/app/src/main/java/com/example/studyapp/device/ArmCloudApiClient.java b/app/src/main/java/com/example/studyapp/device/ArmCloudApiClient.java
new file mode 100644
index 0000000..088d01e
--- /dev/null
+++ b/app/src/main/java/com/example/studyapp/device/ArmCloudApiClient.java
@@ -0,0 +1,253 @@
+package com.example.studyapp.device;
+
+import android.os.Build.VERSION;
+import android.os.Build.VERSION_CODES;
+import android.util.Log;
+import com.example.studyapp.utils.LogFileUtil;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.time.Instant;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import okhttp3.Call;
+import okhttp3.Callback;
+import okhttp3.MediaType;
+import okhttp3.OkHttpClient;
+import okhttp3.OkHttpClient.Builder;
+import okhttp3.Request;
+import okhttp3.RequestBody;
+import okhttp3.Response;
+import okhttp3.ResponseBody;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/**
+ * @Time: 2025-06-08 17:06
+ * @Creator: 初屿贤
+ * @File: ArmCloudApiClient
+ * @Project: study.App
+ * @Description:
+ */
+public class ArmCloudApiClient {
+
+  private final OkHttpClient client;
+  private final String baseUrl;
+  private final String accessKey;
+  private final String secretKey;
+
+  public ArmCloudApiClient(String baseUrl, String accessKey, String secretKey) {
+    this.client = new Builder()
+        .connectTimeout(10, TimeUnit.SECONDS)
+        .readTimeout(10, TimeUnit.SECONDS)
+        .build();
+    this.baseUrl = baseUrl;
+    this.accessKey = accessKey;
+    this.secretKey = secretKey;
+  }
+
+  private static final String ALGORITHM = "HmacSHA256";
+
+  public static String calculateSignature(String timestamp, String path, String body, String secretKey) throws Exception {
+    String stringToSign = timestamp + path + (body != null ? body : "");
+    Mac hmacSha256 = Mac.getInstance(ALGORITHM);
+    SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey.getBytes(StandardCharsets.UTF_8), ALGORITHM);
+    hmacSha256.init(secretKeySpec);
+    byte[] hash = hmacSha256.doFinal(stringToSign.getBytes(StandardCharsets.UTF_8));
+    return bytesToHex(hash);
+  }
+
+  private static String bytesToHex(byte[] bytes) {
+    StringBuilder hexString = new StringBuilder();
+    for (byte b : bytes) {
+      String hex = Integer.toHexString(0xff & b);
+      if (hex.length() == 1) {
+        hexString.append('0');
+      }
+      hexString.append(hex);
+    }
+    return hexString.toString();
+  }
+
+  /**
+   * 修改实例安卓改机属性 静态设置安卓改机属性，需要重启实例才能够生效，一般用于修改设备信息 该接口与修改实例属性接口的区别在于生效时机，该接口生效时间为每次开机初始化 设置实例属性后，属性数据会持久化存储，重启或重置实例无需再调用该接口
+   *
+   * @param padCode 实例 ID，非空
+   * @param props   属性映射，非空
+   * @param restart 是否自动重启
+   * @return 接口返回结果字符串
+   * @throws IOException 请求失败或网络错误
+   */
+  public String updateAndroidModProperties(String padCode, Map<String, String> props, boolean restart) throws IOException {
+    // 参数校验
+    if (padCode == null || padCode.isEmpty()) {
+      throw new IllegalArgumentException("padCode 不能为空");
+    }
+    if (props == null) {
+      throw new IllegalArgumentException("props 不能为 null");
+    }
+
+    // 构造请求体
+    JSONObject json = new JSONObject();
+
+    try {
+      json.put("padCode", padCode);
+      json.put("props", new JSONObject(props));
+      json.put("restart", restart);
+    } catch (JSONException e) {
+      LogFileUtil.logAndWrite(Log.ERROR, "ArmCloudApiClient", "updateAndroidModProperties: JSON error", e);
+    }
+
+    String jsonBody = json.toString();
+
+    // 生成时间戳
+    String timestamp = String.valueOf(System.currentTimeMillis());
+
+    String API_PATH = "/openapi/open/pad/updatePadAndroidProp";
+
+    String signature = "";
+    try {
+      signature = calculateSignature(timestamp, API_PATH, jsonBody, secretKey);
+    } catch (Exception e) {
+      LogFileUtil.logAndWrite(Log.ERROR, "ArmCloudApiClient", "updateAndroidModProperties: Signature error", e);
+    }
+
+    RequestBody body = RequestBody.create(
+        MediaType.parse("application/json; charset=utf-8"),
+        jsonBody
+    );
+
+    Request request = new Request.Builder()
+        .url(baseUrl + API_PATH)
+        .addHeader("authver", "2.0")
+        .addHeader("x-ak", accessKey)
+        .addHeader("x-timestamp", timestamp)
+        .addHeader("x-sign", signature)
+        .post(body)
+        .build();
+
+    try (Response response = client.newCall(request).execute()) {
+      if (!response.isSuccessful()) {
+        throw new IOException("请求失败: " + response);
+      }
+
+      ResponseBody responseBody = response.body();
+      if (responseBody == null) {
+        throw new IOException("响应体为空");
+      }
+
+      return responseBody.string();
+    }
+  }
+
+
+  /**
+   * 修改实例属性 动态修改实例的属性信息，包括系统属性和设置 实例需要处于开机状态，该接口为即时生效
+   * <p>
+   * 示例： String[] padCodes = new String[]{"AC21020010001"}; List<PropertyItem> systemProps = Arrays.asList( new PropertyItem("ro.build.id", "QQ3A.200805.001")
+   * ); List<PropertyItem> oaidProps = Arrays.asList( new PropertyItem("oaid", "001") );
+   * <p>
+   * String response = client.updateInstanceProperties( padCodes, null,  // modemPersistProps null,  // modemProps null,  // systemPersistProps systemProps,
+   * null,  // settingProps oaidProps );
+   */
+  public String updateInstanceProperties(
+      String[] padCodes,
+      List<PropertyItem> modemPersistProps,
+      List<PropertyItem> modemProps,
+      List<PropertyItem> systemPersistProps,
+      List<PropertyItem> systemProps,
+      List<PropertyItem> settingProps,
+      List<PropertyItem> oaidProps
+  ) throws IOException {
+    if (padCodes == null || padCodes.length == 0) {
+      throw new IllegalArgumentException("padCodes 不能为空");
+    }
+
+    JSONObject json = new JSONObject();
+    try {
+      json.put("padCodes", new JSONArray(padCodes));
+      putPropertyItems(json, "modemPersistPropertiesList", modemPersistProps);
+      putPropertyItems(json, "modemPropertiesList", modemProps);
+      putPropertyItems(json, "systemPersistPropertiesList", systemPersistProps);
+      putPropertyItems(json, "systemPropertiesList", systemProps);
+      putPropertyItems(json, "settingPropertiesList", settingProps);
+      putPropertyItems(json, "oaidPropertiesList", oaidProps);
+
+    } catch (JSONException e) {
+      LogFileUtil.logAndWrite(Log.ERROR, "ArmCloudApiClient", "updateInstanceProperties: JSON error", e);
+    }
+
+    String jsonBody = json.toString();
+    String timestamp = String.valueOf(System.currentTimeMillis());
+    String API_PATH = "/openapi/open/pad/updatePadProperties";
+
+    if (secretKey == null || secretKey.isEmpty()) {
+      throw new IllegalArgumentException("secretKey 不能为空");
+    }
+
+    String signature = null;
+    try {
+      signature = calculateSignature(timestamp, API_PATH, jsonBody, secretKey);
+    } catch (Exception e) {
+      LogFileUtil.logAndWrite(Log.ERROR, "ArmCloudApiClient", "updateInstanceProperties: calculateSignature error", e);
+    }
+
+    RequestBody body = RequestBody.create(
+        MediaType.parse("application/json; charset=utf-8"),
+        jsonBody
+    );
+
+    Request request = new Request.Builder()
+        .url(baseUrl + API_PATH)
+        .addHeader("authver", "2.0")
+        .addHeader("x-ak", accessKey)
+        .addHeader("x-timestamp", timestamp)
+        .addHeader("x-sign", signature)
+        .post(body)
+        .build();
+
+    try (Response response = client.newCall(request).execute()) {
+      if (!response.isSuccessful()) {
+        throw new IOException("请求失败: " + response);
+      }
+
+      try (ResponseBody responseBody = response.body()) {
+        return responseBody != null ? responseBody.string() : "";
+      }
+    }
+  }
+
+  private void putPropertyItems(JSONObject json, String key, List<PropertyItem> items) throws JSONException {
+    if (items != null && !items.isEmpty()) {
+      JSONArray array = new JSONArray();
+      for (PropertyItem item : items) {
+        array.put(item.toJson());
+      }
+      json.put(key, array);
+    }
+  }
+
+
+  public static class PropertyItem {
+
+    private String propertiesName;
+    private String propertiesValue;
+
+    public PropertyItem(String name, String value) {
+      this.propertiesName = name;
+      this.propertiesValue = value;
+    }
+
+    public JSONObject toJson() throws JSONException {
+      JSONObject json = new JSONObject();
+      json.put("propertiesName", propertiesName);
+      json.put("propertiesValue", propertiesValue);
+      return json;
+    }
+  }
+}
+
+