refactor(mqtt): 优化MQTT连接管理与设备状态上报

- 使用DeviceStatus对象替代手动拼接JSON字符串
- 启用HiveMQ自动重连机制，移除自定义重连逻辑
- 添加连接状态标记防止并发重复建连
- 优化断线回调，记录服务端断开原因
- 使用设备序列号作为MQTT客户端标识
- 新增信号强度和真实屏幕分辨率获取方法
- 修复SystemUtils中系统属性获取方式
- 添加DeviceStatus单元测试

app/src/main/java/com/ttstd/dialer/bean/DeviceStatus.java

@@ -0,0 +1,73 @@
+package com.ttstd.dialer.bean;
+
+import com.google.gson.annotations.SerializedName;
+
+/**
+ * MQTT 设备状态上报实体（心跳 / 屏幕亮灭）。
+ * <p>
+ * 序列化为 JSON：{"sn":"...","status":"online","ip":"...","screenOn":true|false}
+ */
+public class DeviceStatus {
+    @SerializedName("sn")
+    private String sn;
+
+    @SerializedName("online")
+    private boolean online;
+
+    @SerializedName("ip")
+    private String ip;
+
+    @SerializedName("rssi")
+    private Integer rssi;
+
+    @SerializedName("screenOn")
+    private boolean screenOn;
+
+    public DeviceStatus(String sn, boolean online, String ip, Integer rssi, boolean screenOn) {
+        this.sn = sn;
+        this.online = online;
+        this.ip = ip;
+        this.rssi = rssi;
+        this.screenOn = screenOn;
+    }
+
+    public String getSn() {
+        return sn;
+    }
+
+    public void setSn(String sn) {
+        this.sn = sn;
+    }
+
+    public boolean isOnline() {
+        return online;
+    }
+
+    public void setOnline(boolean online) {
+        this.online = online;
+    }
+
+    public String getIp() {
+        return ip;
+    }
+
+    public void setIp(String ip) {
+        this.ip = ip;
+    }
+
+    public Integer getRssi() {
+        return rssi;
+    }
+
+    public void setRssi(Integer rssi) {
+        this.rssi = rssi;
+    }
+
+    public boolean isScreenOn() {
+        return screenOn;
+    }
+
+    public void setScreenOn(boolean screenOn) {
+        this.screenOn = screenOn;
+    }
+}

app/src/main/java/com/ttstd/dialer/manager/MqttManager.java

@@ -9,8 +9,15 @@ import android.text.TextUtils;
 import com.hivemq.client.mqtt.mqtt5.Mqtt5AsyncClient;
 import com.hivemq.client.mqtt.mqtt5.Mqtt5Client;
 import com.hivemq.client.mqtt.mqtt5.Mqtt5ClientBuilder;
+import com.hivemq.client.mqtt.lifecycle.MqttClientConnectedContext;
+import com.hivemq.client.mqtt.lifecycle.MqttClientDisconnectedContext;
+import com.hivemq.client.mqtt.lifecycle.MqttDisconnectSource;
+import com.hivemq.client.mqtt.mqtt5.lifecycle.Mqtt5ClientConnectedContext;
+import com.hivemq.client.mqtt.mqtt5.message.connect.connack.Mqtt5ConnAck;
 import com.jeremyliao.liveeventbus.LiveEventBus;
+import com.ttstd.dialer.bean.DeviceStatus;
 import com.ttstd.dialer.config.CommonConfig;
+import com.ttstd.dialer.gson.GsonUtils;
 import com.ttstd.dialer.mdm.DeviceManagerService;
 import com.ttstd.dialer.utils.Logger;
 import com.ttstd.dialer.utils.SystemUtils;
@@ -24,6 +31,7 @@ import java.util.Collections;
 import java.util.Enumeration;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.TimeUnit;
 
 /**
  * MQTT 消息管理
@@ -39,9 +47,9 @@ public class MqttManager {
 
     /*MQTT 配置*/
     public static final String MQTT_URL = "mqtt://175.178.213.60:1883";
-    public static final String MQTT_CLIENT_ID = "ttstd-dialer-android";
+    //    public static final String MQTT_CLIENT_ID = "ttstd-dialer-android";
-    public static final String MQTT_USERNAME = "";
+    public static final String MQTT_USERNAME = "tt";
-    public static final String MQTT_PASSWORD = "";
+    public static final String MQTT_PASSWORD = "fanhuitong";
     /*订阅主题*/
     public static final String MQTT_TOPIC_COMMAND = "ttstd/device/command";
     /*发布主题*/
@@ -62,16 +70,6 @@ public class MqttManager {
      */
     private static final long HEARTBEAT_INTERVAL_MS = 30_000L;
 
-    /**
-     * 重连退避初始间隔(毫秒)
-     */
-    private static final long RECONNECT_DELAY_INITIAL_MS = 1_000L;
-
-    /**
-     * 重连退避间隔上限(毫秒)，超过此值不再翻倍
-     */
-    private static final long RECONNECT_DELAY_MAX_MS = 64_000L;
-
     @SuppressLint("StaticFieldLeak")
     private static volatile MqttManager INSTANCE;
 
@@ -79,6 +77,11 @@ public class MqttManager {
     private Mqtt5AsyncClient mMqttClient;
     private volatile boolean mConnected;
 
+    /**
+     * 正在连接标记，防止并发调用 connect() 时重复 build 多个相同 clientId 的 client 互相踢
+     */
+    private volatile boolean mConnecting;
+
     /**
      * 主动断开标记，避免主动断开时触发自动重连
      */
@@ -89,16 +92,6 @@ public class MqttManager {
      */
     private final Handler mHeartbeatHandler = new Handler(Looper.getMainLooper());
 
-    /**
-     * 重连定时器（主线程 Handler）
-     */
-    private final Handler mReconnectHandler = new Handler(Looper.getMainLooper());
-
-    /**
-     * 重连退避间隔（毫秒），随失败次数指数增长
-     */
-    private long mReconnectDelayMs = RECONNECT_DELAY_INITIAL_MS;
-
     private boolean mHeartbeatRunning;
 
     /**
@@ -146,7 +139,8 @@ public class MqttManager {
         if (TextUtils.isEmpty(sn)) {
             sn = "";
         }
-        return ("{\"sn\":\"" + sn + "\",\"status\":\"offline\"}").getBytes(StandardCharsets.UTF_8);
+        return GsonUtils.toJSONString(new DeviceStatus(sn, true, getLocalIpAddress(), SystemUtils.getCurrentNetworkRssi(mContext), false))
+                .getBytes(StandardCharsets.UTF_8);
     }
 
     /**
@@ -157,8 +151,14 @@ public class MqttManager {
             if (mMqttClient != null && mConnected) {
                 return;
             }
+            // 已在连接中（上一次 connect() 的异步回调尚未返回），避免并发重复建连导致相同 clientId 互踢
+            if (mConnecting) {
+                Logger.e(TAG, "connect: 已有连接在进行中，跳过重复 connect");
+                return;
+            }
             // 主动发起连接，清除主动断开标记，允许后续自动重连
             mManualDisconnect = false;
+            mConnecting = true;
             if (mMqttClient != null) {
                 try {
                     mMqttClient.disconnect();
@@ -172,21 +172,25 @@ public class MqttManager {
             int port = uri.getPort() > 0 ? uri.getPort() : 1883;
 
             Mqtt5ClientBuilder builder = Mqtt5Client.builder()
-                    .identifier(MQTT_CLIENT_ID)
+                    .identifier(SystemUtils.getSerial())
                     .serverHost(host)
                     .serverPort(port)
-                    .addDisconnectedListener(context -> onDisconnected());
+                    // HiveMQ 自带断线自动重连（内置指数退避），避免与自定义重连叠加导致重复连接
-            if (!TextUtils.isEmpty(MQTT_USERNAME)) {
+                    .automaticReconnectWithDefaultConfig()
+                    .addDisconnectedListener(this::onDisconnected)
+                    .addConnectedListener(this::onConnected);
+
             builder.simpleAuth()
                     .username(MQTT_USERNAME)
                     .password(MQTT_PASSWORD.getBytes(StandardCharsets.UTF_8))
                     .applySimpleAuth();
-            }
 
             mMqttClient = builder.buildAsync();
 
             mMqttClient.connectWith()
                     .keepAlive(30)
+                    .cleanStart(false)  // 复用历史会话
+                    .sessionExpiryInterval(TimeUnit.DAYS.toSeconds(1))    // 断开后会话保留
                     .willPublish()
                     .topic(MQTT_TOPIC_STATUS)
                     .payload(buildWillPayload())
@@ -195,23 +199,16 @@ public class MqttManager {
                     .applyWillPublish()
                     .send()
                     .whenComplete((connAck, throwable) -> {
+                        // 首次 connect 异步结果返回，复位连接中标记
+                        mConnecting = false;
                         if (throwable != null) {
                             String msg = throwable.getMessage();
-                            Logger.e(TAG, "connect: 连接失败 " + msg
+                            Logger.e(TAG, "connect: 首次连接失败 " + msg
-                                    + "，将自动重试连接 " + host + ":" + port);
+                                    + "，HiveMQ 将自动重连 " + host + ":" + port);
                             setConnected(false);
-                            // 首次连接失败也安排重连（网络不可达等场景）
-                            scheduleReconnect();
                         } else {
-                            Logger.e(TAG, "connect: 连接成功");
+                            // 首次连接成功（后续重连成功会走 onConnected 回调）
-                            mReconnectDelayMs = RECONNECT_DELAY_INITIAL_MS;
+                            onConnected();
-                            setConnected(true);
-                            // 连接成功后重新订阅之前订阅的主题
-                            reSubscribeAll();
-                            // 连接成功后启动心跳上报
-                            startHeartbeat();
-                            // 连接成功后上报一次当前屏幕开关状态
-                            reportScreenStateOnConnect();
                         }
                     });
         } catch (Throwable e) {
@@ -221,55 +218,71 @@ public class MqttManager {
     }
 
     /**
-     * 断线回调：若非主动断开，则按指数退避安排重连
+     * 连接成功回调（首次 connect 异步结果返回时调用，无 context 信息）
      */
-    private void onDisconnected() {
+    private void onConnected() {
+        onConnected(null);
+    }
+
+    /**
+     * 连接成功回调（首次连接与 HiveMQ 自动重连成功都会触发）
+     */
+    private void onConnected(MqttClientConnectedContext context) {
+        boolean sessionPresent = false;
+        if (context instanceof Mqtt5ClientConnectedContext) {
+            Mqtt5ConnAck connAck = ((Mqtt5ClientConnectedContext) context).getConnAck();
+            sessionPresent = connAck != null && connAck.isSessionPresent();
+        }
+        Logger.e(TAG, "onConnected: 连接成功 sessionPresent=" + sessionPresent);
+        setConnected(true);
+        // 连接成功后重新订阅之前订阅的主题
+        reSubscribeAll();
+        // 连接成功后启动心跳上报
+        startHeartbeat();
+        // 连接成功后上报一次当前屏幕开关状态
+        reportScreenStateOnConnect();
+    }
+
+    /**
+     * 断线回调：仅做状态清理与心跳停止，重连交由 HiveMQ 自动重连处理，
+     * 不再自行调用 connect()，避免与 HiveMQ 的重连叠加导致重复连接。
+     * 同时打印 Broker 返回的断开原因，便于定位反复断开的根因。
+     */
+    private void onDisconnected(MqttClientDisconnectedContext context) {
         if (mManualDisconnect) {
             Logger.e(TAG, "onDisconnected: 主动断开，不重连");
             return;
         }
-        Logger.e(TAG, "onDisconnected: 连接断开，准备自动重连");
+        // 解析断开来源与原因，区分"服务端踢"与"网络/客户端问题"
+        String source = context.getSource() != null ? context.getSource().name() : "UNKNOWN";
+        String cause = context.getCause() != null ? context.getCause().toString() : "null";
+        if (context.getSource() == MqttDisconnectSource.SERVER) {
+            // 服务端主动断开（如 clientId 冲突、鉴权失败、协议违规），reason code 有价值
+            Logger.e(TAG, "onDisconnected: 服务端主动断开 source=" + source
+                    + " cause=" + cause
+                    + "，等待 HiveMQ 自动重连");
+        } else {
+            Logger.e(TAG, "onDisconnected: 连接断开 source=" + source
+                    + " cause=" + cause
+                    + "，等待 HiveMQ 自动重连");
+        }
         setConnected(false);
         stopHeartbeat();
-        scheduleReconnect();
     }
 
-    /**
-     * 安排一次延迟重连（指数退避，上限 30s）
-     */
-    private void scheduleReconnect() {
-        mReconnectHandler.removeCallbacks(mReconnectRunnable);
-        Logger.e(TAG, "scheduleReconnect: " + (mReconnectDelayMs / 1000) + "s 后重连");
-        mReconnectHandler.postDelayed(mReconnectRunnable, mReconnectDelayMs);
-        // 下次退避间隔翻倍，封顶 30s
-        mReconnectDelayMs = Math.min(mReconnectDelayMs * 2, RECONNECT_DELAY_MAX_MS);
-    }
-
-    private final Runnable mReconnectRunnable = new Runnable() {
-        @Override
-        public void run() {
-            if (mManualDisconnect) {
-                return;
-            }
-            Logger.e(TAG, "reconnect: 尝试重新连接...");
-            connect();
-        }
-    };
-
     /**
      * 断开 MQTT 连接（主动断开，先发离线消息再断连，不会触发遗言）
      */
     public void disconnect() {
-        // 标记主动断开，重连任务与断线监听均据此跳过重连
+        // 标记主动断开，断线监听据此跳过重连
         mManualDisconnect = true;
-        mReconnectHandler.removeCallbacks(mReconnectRunnable);
         stopHeartbeat();
         try {
             if (mMqttClient != null && mConnected) {
                 // 主动上报离线消息，确保服务端即时感知设备下线
                 String sn = DeviceManagerService.getInstance().getSerial();
                 if (!TextUtils.isEmpty(sn)) {
-                    String offlinePayload = "{\"sn\":\"" + sn + "\",\"status\":\"offline\"}";
+                    String offlinePayload = GsonUtils.toJSONString(new DeviceStatus(sn, false, getLocalIpAddress(), SystemUtils.getCurrentNetworkRssi(mContext), false));
                     publish(MQTT_TOPIC_STATUS, offlinePayload);
                 }
                 mMqttClient.disconnect();
@@ -427,12 +440,11 @@ public class MqttManager {
     }
 
     /**
-     * 构建设备状态上报 JSON：{"sn":"...","status":"online","ip":"...","screenOn":true|false}
+     * 构建设备状态上报 JSON：{"sn":"...","online":"online","ip":"...","screenOn":true|false}
      */
     private String buildStatusPayload(String sn, boolean screenOn) {
-        String ip = getLocalIpAddress();
+        DeviceStatus status = new DeviceStatus(sn, true, getLocalIpAddress(), SystemUtils.getCurrentNetworkRssi(mContext), screenOn);
-        return "{\"sn\":\"" + sn + "\",\"status\":\"online\",\"ip\":\"" + (ip == null ? "" : ip)
+        return GsonUtils.toJSONString(status);
-                + "\",\"screenOn\":" + screenOn + "}";
     }
 
     /**
@@ -452,7 +464,7 @@ public class MqttManager {
         } catch (Throwable e) {
             Logger.e(TAG, "getLocalIpAddress: " + e.getMessage());
         }
-        return "";
+        return "127.0.0.1";
     }
 
     private void onMessageReceived(com.hivemq.client.mqtt.mqtt5.message.publish.Mqtt5Publish publish) {

app/src/main/java/com/ttstd/dialer/utils/SystemUtils.java

@@ -18,6 +18,8 @@ import android.content.pm.ResolveInfo;
 import android.content.pm.UserInfo;
 import android.graphics.Bitmap;
 import android.graphics.Rect;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
 import android.net.wifi.WifiInfo;
 import android.net.wifi.WifiManager;
 import android.os.Build;
@@ -26,9 +28,13 @@ import android.os.IBinder;
 import android.os.PowerManager;
 import android.os.Process;
 import android.os.RemoteException;
+import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.provider.MediaStore;
 import android.provider.Settings;
+import android.telephony.CellInfo;
+import android.telephony.CellSignalStrength;
+import android.telephony.SignalStrength;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyManager;
@@ -78,15 +84,14 @@ public class SystemUtils {
      * @return
      */
     public static String getProperty(String key, String defaultValue) {
-        String value = defaultValue;
+//        SystemProperties.get();
         try {
             Class<?> c = Class.forName("android.os.SystemProperties");
             Method get = c.getMethod("get", String.class, String.class);
-            value = (String) (get.invoke(c, key, Build.UNKNOWN));
+            return (String) (get.invoke(c, key, defaultValue));
         } catch (Exception e) {
             e.printStackTrace();
-        } finally {
+            return defaultValue;
-            return value;
         }
     }
 
@@ -366,6 +371,135 @@ public class SystemUtils {
         return "";
     }
 
+    /**
+     * 获取当前蜂窝信号强度等级（0~4，对应 ASU 的粗略分级，4 最强）。
+     * 该值可用于状态栏信号格显示，与 {@link android.telephony.SignalStrength#getLevel()} 一致。
+     *
+     * @param context 上下文
+     * @return 信号等级 0~4；无 SIM / 非蜂窝网络 / 获取失败返回 -1
+     */
+    @SuppressLint("MissingPermission")
+    public static int getSignalLevel(Context context) {
+        try {
+            TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+            if (tm == null) {
+                return -1;
+            }
+            // Android 9 (API 28) 及以下无 getAllCellInfo/SignalStrength 的公开 getLevel，
+            // 这里统一用 getAllCellInfo 取最强小区的 level，覆盖绝大多数系统版本。
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+                List<CellInfo> cellInfos = tm.getAllCellInfo();
+                if (cellInfos != null) {
+                    int maxLevel = -1;
+                    for (CellInfo info : cellInfos) {
+                        if (info == null || !info.isRegistered()) {
+                            continue;
+                        }
+                        CellSignalStrength strength = info.getCellSignalStrength();
+                        if (strength != null) {
+                            maxLevel = Math.max(maxLevel, strength.getLevel());
+                        }
+                    }
+                    if (maxLevel >= 0) {
+                        return maxLevel;
+                    }
+                }
+            }
+            // 兜底：API 29+ 可直接取 SignalStrength 的 level
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                SignalStrength signalStrength = tm.getSignalStrength();
+                if (signalStrength != null) {
+                    return signalStrength.getLevel();
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return -1;
+    }
+
+    /**
+     * 获取当前蜂窝信号强度（dBm，如 -75 表示较强，-113 接近无信号）。
+     * 优先使用各制式 CellInfo 的 dBm，找不到则回退到 ASU 换算（asu - 113 - 2 * (asu & 1)）。
+     *
+     * @param context 上下文
+     * @return 信号强度 dBm；无信号 / 获取失败返回 {@code null}
+     */
+    @SuppressLint("MissingPermission")
+    public static Integer getSignalDbm(Context context) {
+        try {
+            TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+            if (tm == null) {
+                return null;
+            }
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+                List<CellInfo> cellInfos = tm.getAllCellInfo();
+                if (cellInfos != null) {
+                    int bestDbm = Integer.MIN_VALUE;
+                    for (CellInfo info : cellInfos) {
+                        if (info == null || !info.isRegistered()) {
+                            continue;
+                        }
+                        CellSignalStrength strength = info.getCellSignalStrength();
+                        if (strength != null) {
+                            int dbm = strength.getDbm();
+                            if (dbm != Integer.MAX_VALUE && dbm > bestDbm) {
+                                bestDbm = dbm;
+                            }
+                        }
+                    }
+                    if (bestDbm != Integer.MIN_VALUE) {
+                        return bestDbm;
+                    }
+                }
+            }
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                SignalStrength signalStrength = tm.getSignalStrength();
+                if (signalStrength != null) {
+                    int dbm = signalStrength.getDbm();
+                    if (dbm != Integer.MAX_VALUE && dbm != Integer.MIN_VALUE) {
+                        return dbm;
+                    }
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    /**
+     * 根据当前活跃网络获取信号强度 (RSSI/dBm)
+     * 优先返回 Wi-Fi 信号强度，如果未连接 Wi-Fi 则返回移动网络信号强度
+     *
+     * @param context 上下文
+     * @return 信号强度 (dBm)；获取失败返回 null
+     */
+    public static Integer getCurrentNetworkRssi(Context context) {
+        try {
+            ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+            if (cm == null) return null;
+
+            NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
+            if (activeNetwork == null || !activeNetwork.isConnected()) {
+                return null;
+            }
+
+            if (activeNetwork.getType() == ConnectivityManager.TYPE_WIFI) {
+                WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
+                WifiInfo info = wifiManager.getConnectionInfo();
+                if (info != null) {
+                    return info.getRssi();
+                }
+            } else if (activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE) {
+                return getSignalDbm(context);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
     private static String getNetworkTypeName(int networkType) {
         switch (networkType) {
             case TelephonyManager.NETWORK_TYPE_GPRS:
@@ -504,11 +638,11 @@ public class SystemUtils {
     }
 
     public static String getBuildId() {
-        return getProperty(Build.ID, Build.UNKNOWN);
+        return getProperty("ro.build.id", Build.ID);
     }
 
     public static String getBuildDisplayId() {
-        return getProperty(Build.DISPLAY, Build.UNKNOWN);
+        return getProperty("ro.build.display.id", Build.DISPLAY);
     }
 
     // ==================================================================
@@ -527,7 +661,7 @@ public class SystemUtils {
     }
 
     public static String getDeviceManufacturer() {
-        return getProperty(Build.MANUFACTURER, Build.UNKNOWN);
+        return getProperty("ro.product.manufacturer", Build.MANUFACTURER);
     }
 
     public static String getHardware() {
@@ -535,7 +669,7 @@ public class SystemUtils {
     }
 
     public static String getHost() {
-        return getProperty(Build.HOST, Build.UNKNOWN);
+        return getProperty("ro.build.host", Build.HOST);
     }
 
     public static String getAndroidId(Context context) {
@@ -547,23 +681,23 @@ public class SystemUtils {
     }
 
     public static String getBuildFingerprint() {
-        return getProperty(Build.FINGERPRINT, Build.UNKNOWN);
+        return getProperty("ro.build.fingerprint", Build.FINGERPRINT);
     }
 
     public static String getBuildType() {
-        return getProperty(Build.TYPE, Build.UNKNOWN);
+        return getProperty("ro.build.type", Build.TYPE);
     }
 
     public static String getBuildUser() {
-        return getProperty(Build.USER, Build.UNKNOWN);
+        return getProperty("ro.build.user", Build.USER);
     }
 
     public static String getBuildHost() {
-        return getProperty(Build.HOST, Build.UNKNOWN);
+        return getProperty("ro.build.host", Build.HOST);
     }
 
     public static String getBuildTags() {
-        return getProperty(Build.TAGS, Build.UNKNOWN);
+        return getProperty("ro.build.tags", Build.TAGS);
     }
 
     public static long getBuildTime() {
@@ -600,13 +734,30 @@ public class SystemUtils {
 
     public static String getScreenResolution(Context context) {
         try {
-            android.util.DisplayMetrics dm = context.getResources().getDisplayMetrics();
+            android.util.DisplayMetrics dm = getRealDisplayMetrics(context);
             return dm.widthPixels + "x" + dm.heightPixels;
         } catch (Throwable t) {
             return "";
         }
     }
 
+    /**
+     * 获取设备真实屏幕显示参数（包含状态栏、导航栏，不被窗口裁切）。
+     * 优先使用 getRealMetrics（显示设备真实分辨率），低版本无此 API 时回退 getMetrics。
+     */
+    private static android.util.DisplayMetrics getRealDisplayMetrics(Context context) {
+        android.util.DisplayMetrics dm = new android.util.DisplayMetrics();
+        android.view.WindowManager wm =
+                (android.view.WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        android.view.Display display = wm.getDefaultDisplay();
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            display.getRealMetrics(dm);
+        } else {
+            display.getMetrics(dm);
+        }
+        return dm;
+    }
+
     public static int getScreenDensity(Context context) {
         try {
             return (int) Math.round(context.getResources().getDisplayMetrics().density);
@@ -635,7 +786,7 @@ public class SystemUtils {
     }
 
     public static String getProductName() {
-        return getProperty(Build.PRODUCT, Build.UNKNOWN);
+        return getProperty("ro.product.name", Build.PRODUCT);
     }
 
     public static String getProductModel() {
@@ -682,7 +833,7 @@ public class SystemUtils {
     }
 
     public static String getBootloader() {
-        return getProperty(Build.BOOTLOADER, Build.UNKNOWN);
+        return getProperty("ro.bootloader", Build.BOOTLOADER);
     }
 
     public static String getBasebandVersion() {
@@ -699,7 +850,7 @@ public class SystemUtils {
 
     public static String getScreenSize(Context context) {
         try {
-            android.util.DisplayMetrics dm = context.getResources().getDisplayMetrics();
+            android.util.DisplayMetrics dm = getRealDisplayMetrics(context);
             double diagonal = Math.sqrt(Math.pow(dm.widthPixels / dm.xdpi, 2)
                     + Math.pow(dm.heightPixels / dm.ydpi, 2));
             return String.format(Locale.US, "%.1f", diagonal);
@@ -710,7 +861,7 @@ public class SystemUtils {
 
     public static double getScreenInch(Context context) {
         try {
-            android.util.DisplayMetrics dm = context.getResources().getDisplayMetrics();
+            android.util.DisplayMetrics dm = getRealDisplayMetrics(context);
             double diagonal = Math.sqrt(Math.pow(dm.widthPixels / dm.xdpi, 2)
                     + Math.pow(dm.heightPixels / dm.ydpi, 2));
             return Math.round(diagonal * 10.0) / 10.0;

app/src/test/java/com/ttstd/dialer/bean/DeviceStatusTest.java

@@ -0,0 +1,69 @@
+package com.ttstd.dialer.bean;
+
+import com.google.gson.Gson;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class DeviceStatusTest {
+
+    @Test
+    public void testConstructorAndGetters() {
+        String sn = "SN123456";
+        boolean online = true;
+        String ip = "192.168.1.100";
+        Integer rssi = -65;
+        boolean screenOn = true;
+
+        DeviceStatus status = new DeviceStatus(sn, online, ip, rssi, screenOn);
+
+        Assert.assertEquals(sn, status.getSn());
+        Assert.assertEquals(online, status.isOnline());
+        Assert.assertEquals(ip, status.getIp());
+        Assert.assertEquals(rssi, status.getRssi());
+        Assert.assertEquals(screenOn, status.isScreenOn());
+    }
+
+    @Test
+    public void testSetters() {
+        DeviceStatus status = new DeviceStatus(null, false, null, null, false);
+
+        status.setSn("NEW_SN");
+        status.setOnline(true);
+        status.setIp("10.0.0.1");
+        status.setRssi(-70);
+        status.setScreenOn(true);
+
+        Assert.assertEquals("NEW_SN", status.getSn());
+        Assert.assertTrue(status.isOnline());
+        Assert.assertEquals("10.0.0.1", status.getIp());
+        Assert.assertEquals(Integer.valueOf(-70), status.getRssi());
+        Assert.assertTrue(status.isScreenOn());
+    }
+
+    @Test
+    public void testJsonSerialization() {
+        DeviceStatus status = new DeviceStatus("SN123", true, "1.1.1.1", -50, true);
+        Gson gson = new Gson();
+        String json = gson.toJson(status);
+        
+        // 验证 JSON 字符串中包含正确的字段和值
+        Assert.assertTrue(json.contains("\"sn\":\"SN123\""));
+        Assert.assertTrue(json.contains("\"online\":true"));
+        Assert.assertTrue(json.contains("\"ip\":\"1.1.1.1\""));
+        Assert.assertTrue(json.contains("\"rssi\":-50"));
+        Assert.assertTrue(json.contains("\"screenOn\":true"));
+    }
+
+    @Test
+    public void testJsonDeserialization() {
+        String json = "{\"sn\":\"SN999\",\"online\":false,\"ip\":\"8.8.8.8\",\"rssi\":-80,\"screenOn\":false}";
+        Gson gson = new Gson();
+        DeviceStatus status = gson.fromJson(json, DeviceStatus.class);
+
+        Assert.assertEquals("SN999", status.getSn());
+        Assert.assertFalse(status.isOnline());
+        Assert.assertEquals("8.8.8.8", status.getIp());
+        Assert.assertEquals(Integer.valueOf(-80), status.getRssi());
+        Assert.assertFalse(status.isScreenOn());
+    }
+}

screenMatch.properties

@@ -19,7 +19,7 @@ base_dp=360
 # Also need to match the phone screen of [match_dp].
 # If you have another dp values.
 # System default values is 240,320,384,392,400,410,411,480,533,592,600,640,662,720,768,800,811,820,960,961,1024,1280,1365
-match_dp=
+match_dp=240,260,280,300,320,360,362.2641,380,384,390,392.7272,400,410,411.4285,430,432,451.7647,480,533,540,592,600,640,662,720,768,800,811,820,960,961,1024,1280,1365
 # If you not wanna to match dp values above. Write some above values here, append value with "," .
 # For example: 811,961,1365
 ignore_dp=