[android] Implemented obtaining the advertising id

android/jni/com/mapswithme/platform/Platform.cpp

@@ -30,8 +30,18 @@ std::string Platform::UniqueClientId() const
 
 std::string Platform::AdvertisingId() const
 {
-  //TODO(@alexzatsepin): Implement me.
-  return {};
+  JNIEnv *env = jni::GetEnv();
+  static jmethodID const getAdvertisingId = jni::GetStaticMethodID(env, g_utilsClazz,
+                                                                   "getAdvertisingId",
+                                                                   "(Landroid/content/Context;)"
+                                                                   "Ljava/lang/String;");
+  jobject context = android::Platform::Instance().GetContext();
+  jni::TScopedLocalRef adIdRef(env, env->CallStaticObjectMethod(g_utilsClazz, getAdvertisingId,
+                                                                context));
+  if (adIdRef.get() == nullptr)
+    return {};
+
+  return jni::ToNativeString(env, static_cast<jstring>(adIdRef.get()));
 }
 
 std::string Platform::MacAddress(bool md5Decoded) const

android/src/com/mapswithme/maps/analytics/ExternalLibrariesMediator.java

@@ -3,11 +3,11 @@ package com.mapswithme.maps.analytics;
 import android.app.Application;
 import android.os.AsyncTask;
 import android.os.CountDownTimer;
+import android.text.TextUtils;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
-import android.text.TextUtils;
-
 import com.appsflyer.AppsFlyerConversionListener;
 import com.appsflyer.AppsFlyerLib;
 import com.crashlytics.android.Crashlytics;
@@ -193,6 +193,12 @@ public class ExternalLibrariesMediator
     return mAdvertisingInfo.isLimitAdTrackingEnabled();
   }
 
+  @Nullable
+  public String getAdvertisingId()
+  {
+    return mAdvertisingInfo != null ? mAdvertisingInfo.getID() : null;
+  }
+
   public void disableAdProvider(@NonNull Banner.Type type)
   {
     Framework.disableAdProvider(type);
@@ -390,6 +396,12 @@ public class ExternalLibrariesMediator
              "mInfo=" + mInfo +
              '}';
     }
+
+    @Nullable
+    String getID()
+    {
+      return mInfo != null ? mInfo.getId() : null;
+    }
   }
 
   @UiThread

android/src/com/mapswithme/util/Utils.java

@@ -35,6 +35,7 @@ import com.mapswithme.maps.BuildConfig;
 import com.mapswithme.maps.MwmApplication;
 import com.mapswithme.maps.R;
 import com.mapswithme.maps.activity.CustomNavigateUpListener;
+import com.mapswithme.maps.analytics.ExternalLibrariesMediator;
 import com.mapswithme.util.concurrency.UiThread;
 import com.mapswithme.util.log.Logger;
 import com.mapswithme.util.log.LoggerFactory;
@@ -380,6 +381,14 @@ public class Utils
     return installationId;
   }
 
+  @Nullable
+  public static String getAdvertisingId(@NonNull Context context)
+  {
+    MwmApplication application = MwmApplication.from(context);
+    ExternalLibrariesMediator mediator = application.getMediator();
+    return mediator.getAdvertisingId();
+  }
+
   @NonNull
   public static String getMacAddress(boolean md5Decoded)
   {