1 files changed, 41 insertions, 0 deletions
diff --git a/app/src/main/java/it/niedermann/nextcloud/deck/api/GsonUTCDateAdapter.java b/app/src/main/java/it/niedermann/nextcloud/deck/api/GsonUTCDateAdapter.java
new file mode 100644
index 000000000..c4273c7a8
--- /dev/null
+++ b/app/src/main/java/it/niedermann/nextcloud/deck/api/GsonUTCDateAdapter.java
@@ -0,0 +1,41 @@
+package it.niedermann.nextcloud.deck.api;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+import java.lang.reflect.Type;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+import java.util.TimeZone;
+
+public class GsonUTCDateAdapter implements JsonSerializer<Date>, JsonDeserializer<Date> {
+
+    private final DateFormat dateFormat;
+
+    public GsonUTCDateAdapter() {
+      //This is the format I need
+      dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
+      //This is the key line which converts the date to UTC which cannot be accessed with the default serializer
+      dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+    }
+
+    @Override public synchronized JsonElement serialize(Date date, Type type, JsonSerializationContext jsonSerializationContext) {
+        return new JsonPrimitive(dateFormat.format(date));
+    }
+
+    @Override public synchronized Date deserialize(JsonElement jsonElement, Type type, JsonDeserializationContext jsonDeserializationContext) {
+      try {
+        return dateFormat.parse(jsonElement.getAsString());
+      } catch (ParseException e) {
+        throw new JsonParseException(e);
+      }
+    }
+}
+\ No newline at end of file