Show date from which statistics are counting (#4517)

2 files changed, 19 insertions, 2 deletions

diff --git a/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java b/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java
index 1dc4b6093..56dd95fe6 100644
--- a/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java
+++ b/core/src/main/java/de/danoeh/antennapod/core/preferences/UserPreferences.java
@@ -4,7 +4,6 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.os.Build;
-import androidx.preference.PreferenceManager;
 import android.text.TextUtils;
 import android.util.Log;
 
@@ -12,6 +11,7 @@ import androidx.annotation.IntRange;
 import androidx.annotation.NonNull;
 import androidx.annotation.VisibleForTesting;
 import androidx.core.app.NotificationCompat;
+import androidx.preference.PreferenceManager;
 
 import org.json.JSONArray;
 import org.json.JSONException;
@@ -23,7 +23,7 @@ import java.text.DecimalFormat;
 import java.text.DecimalFormatSymbols;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
+import java.util.Calendar;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Locale;
@@ -115,6 +115,7 @@ public class UserPreferences {
     private static final String PREF_DATA_FOLDER = "prefDataFolder";
     public static final String PREF_IMAGE_CACHE_SIZE = "prefImageCacheSize";
     public static final String PREF_DELETE_REMOVES_FROM_QUEUE = "prefDeleteRemovesFromQueue";
+    public static final String PREF_USAGE_COUNTING_DATE = "prefUsageCounting";
 
     // Mediaplayer
     public static final String PREF_MEDIA_PLAYER = "prefMediaPlayer";
@@ -1056,4 +1057,19 @@ public class UserPreferences {
                 .apply();
     }
 
+    public static long getUsageCountingDateMillis() {
+        return prefs.getLong(PREF_USAGE_COUNTING_DATE, -1);
+    }
+
+    private static void setUsageCountingDateMillis(long value) {
+        prefs.edit().putLong(PREF_USAGE_COUNTING_DATE, value).apply();
+    }
+
+    public static void resetUsageCountingDate() {
+        setUsageCountingDateMillis(Calendar.getInstance().getTimeInMillis());
+    }
+
+    public static void unsetUsageCountingDate() {
+        setUsageCountingDateMillis(-1);
+    }
 }
diff --git a/core/src/main/res/values/strings.xml b/core/src/main/res/values/strings.xml
index 15f114c42..22105f18b 100644
--- a/core/src/main/res/values/strings.xml
+++ b/core/src/main/res/values/strings.xml
@@ -41,6 +41,7 @@
     <string name="statistics_speed_not_counted">Notice: Playback speed is never taken into account.</string>
     <string name="statistics_reset_data">Reset statistics data</string>
     <string name="statistics_reset_data_msg">This will erase the history of duration played for all episodes. Are you sure you want to proceed?</string>
+    <string name="statistics_counting_since">Since %s,\nyou played</string>
 
     <!-- Download Statistics fragment -->
     <string name="total_size_downloaded_podcasts">Total size of episodes on the device:</string>