Log in which Android standby bucket the app is in if running on Android 9+ device

app/src/main/java/org/linphone/LinphoneActivity.java

@@ -1395,6 +1395,13 @@ public class LinphoneActivity extends LinphoneGenericActivity
                     "[Linphone Activity] Device has been restricted by user (Android 9+), push notifications won't work !");
         }
 
+        int bucket = DeviceUtils.getAppStandbyBucket(this);
+        if (bucket > 0) {
+            Log.w(
+                    "[Linphone Activity] Device is in bucket "
+                            + Compatibility.getAppStandbyBucketNameFromValue(bucket));
+        }
+
         IntentUtils.handleIntent(this, getIntent());
     }
 

app/src/main/java/org/linphone/compatibility/ApiTwentyEightPlus.java

@@ -26,6 +26,7 @@ import android.app.ActivityManager;
 import android.app.Notification;
 import android.app.PendingIntent;
 import android.app.Person;
+import android.app.usage.UsageStatsManager;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.drawable.Icon;
@@ -85,4 +86,24 @@ class ApiTwentyEightPlus {
                 (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
         return activityManager.isBackgroundRestricted();
     }
+
+    public static int getAppStandbyBucket(Context context) {
+        UsageStatsManager usageStatsManager =
+                (UsageStatsManager) context.getSystemService(Context.USAGE_STATS_SERVICE);
+        return usageStatsManager.getAppStandbyBucket();
+    }
+
+    public static String getAppStandbyBucketNameFromValue(int bucket) {
+        switch (bucket) {
+            case UsageStatsManager.STANDBY_BUCKET_ACTIVE:
+                return "STANDBY_BUCKET_ACTIVE";
+            case UsageStatsManager.STANDBY_BUCKET_FREQUENT:
+                return "STANDBY_BUCKET_FREQUENT";
+            case UsageStatsManager.STANDBY_BUCKET_RARE:
+                return "STANDBY_BUCKET_RARE";
+            case UsageStatsManager.STANDBY_BUCKET_WORKING_SET:
+                return "STANDBY_BUCKET_WORKING_SET";
+        }
+        return null;
+    }
 }

app/src/main/java/org/linphone/compatibility/Compatibility.java

@@ -210,4 +210,18 @@ public class Compatibility {
         }
         return false;
     }
+
+    public static int getAppStandbyBucket(Context context) {
+        if (Version.sdkAboveOrEqual(Version.API28_PIE_90)) {
+            return ApiTwentyEightPlus.getAppStandbyBucket(context);
+        }
+        return 0;
+    }
+
+    public static String getAppStandbyBucketNameFromValue(int bucket) {
+        if (Version.sdkAboveOrEqual(Version.API28_PIE_90)) {
+            return ApiTwentyEightPlus.getAppStandbyBucketNameFromValue(bucket);
+        }
+        return null;
+    }
 }

app/src/main/java/org/linphone/utils/DeviceUtils.java

@@ -125,6 +125,10 @@ public class DeviceUtils {
         return Compatibility.isAppUserRestricted(context);
     }
 
+    public static int getAppStandbyBucket(Context context) {
+        return Compatibility.getAppStandbyBucket(context);
+    }
+
     public static void displayDialogIfDeviceHasPowerManagerThatCouldPreventPushNotifications(
             final Context context) {
         for (final Intent intent : POWERMANAGER_INTENTS) {