[Android] Android程序获取鸿蒙手机设备信息（是否鸿蒙手机、版本号、小版本号等）

import android.text.TextUtils;
import java.lang.reflect.Method;
/**
 * 齐行超
 * 2020-02-16
 */
public class HarmonyUtils {
  /**
   * 是否为鸿蒙系统
   *
   * @return true为鸿蒙系统
   */
  public static boolean isHarmonyOs() {
    try {
      Class<?> buildExClass = Class.forName("com.huawei.system.BuildEx");
      Object osBrand = buildExClass.getMethod("getOsBrand").invoke(buildExClass);
      return "Harmony".equalsIgnoreCase(osBrand.toString());
    } catch (Throwable x) {
      return false;
    }
  }
  /**
   * 获取鸿蒙系统版本号
   *
   * @return 版本号
   */
  public static String getHarmonyVersion() {
    return getProp("hw_sc.build.platform.version", "");
  }
  /**
   * 获取属性
   * @param property
   * @param defaultValue
   * @return
   */
  private static String getProp(String property, String defaultValue) {
    try {
      Class spClz = Class.forName("android.os.SystemProperties");
      Method method = spClz.getDeclaredMethod("get", String.class);
      String value = (String) method.invoke(spClz, property);
      if (TextUtils.isEmpty(value)) {
        return defaultValue;
      }
      return value;
    } catch (Throwable e) {
      e.printStackTrace();
    }
    return defaultValue;
  }
  /**
   * 获得鸿蒙系统版本号（含小版本号，实际上同Android的android.os.Build.DISPLAY）
   * @return 版本号
   */
  public static String getHarmonyDisplayVersion() {
    return android.os.Build.DISPLAY;
  }
}

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
public class HarmonyActivity extends AppCompatActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_harmony);
    TextView tv_is_harmony = findViewById(R.id.tv_is_harmony);
    TextView tv_harmony_version = findViewById(R.id.tv_harmony_version);
    TextView tv_harmony_display_version = findViewById(R.id.tv_harmony_display_version);
    boolean isHarmony = HarmonyUtils.isHarmonyOs();
    tv_is_harmony.setText("is harmony ?  \n  "+ isHarmony);
    String harmonyVersion = HarmonyUtils.getHarmonyVersion();
    tv_harmony_version.setText("harmony version is: \n  "+harmonyVersion);
    String displayVersion = HarmonyUtils.getHarmonyDisplayVersion();
    tv_harmony_display_version.setText("harmony display version is: \n  "+displayVersion);
  }
}

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:padding="10dp"
  tools:context=".HarmonyActivity">
  <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="is harmony ?"
    android:id="@+id/tv_is_harmony"
    android:textSize="20sp"
    android:layout_marginTop="20dp"
    app:layout_constraintTop_toTopOf="parent"/>
  <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:layout_constraintTop_toBottomOf="@id/tv_is_harmony"
    android:id="@+id/tv_harmony_version"
    android:textSize="20sp"
    android:layout_marginTop="20dp"
    android:text="harmony version"/>
  <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:layout_constraintTop_toBottomOf="@id/tv_harmony_version"
    android:id="@+id/tv_harmony_display_version"
    android:textSize="20sp"
    android:layout_marginTop="20dp"
    android:text="harmony display version"/>
</androidx.constraintlayout.widget.ConstraintLayout>