feat(channel): fixing json parsing issue (#79)

Author: milos1290

AndroidSDK/src/com/leanplum/LeanplumNotificationChannel.java

@@ -40,7 +40,9 @@
 
 import org.json.JSONArray;
 
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
@@ -602,10 +604,17 @@ private static class NotificationChannelData {
       showBadge = (boolean) CollectionUtil.getOrDefault(channel, "show_badge", showBadge);
 
       try {
-        List<Long> pattern = CollectionUtil.uncheckedCast(
+        List<Number> pattern = CollectionUtil.uncheckedCast(
             CollectionUtil.getOrDefault(channel, "vibration_pattern", null));
         if (pattern != null) {
-          vibrationPattern = CollectionUtil.toPrimitive(pattern.toArray(new Long[pattern.size()]));
+          vibrationPattern = new long[pattern.size()];
+          Iterator<Number> iterator = pattern.iterator();
+          for (int i = 0; i < vibrationPattern.length; i++) {
+            Number next = iterator.next();
+            if (next != null) {
+              vibrationPattern[i] = next.longValue();
+            }
+          }
         }
       } catch (Exception e) {
         Log.w("Failed to parse vibration pattern.");

AndroidSDKTests/src/test/java/com/leanplum/LeanplumNotificationChannelTests.java

@@ -95,12 +95,16 @@ public void testNotificationChannels() throws Exception {
     channel2.put("name", "name_2");
     channel2.put("importance", 1);
     channel2.put("description", "description_2");
+    channel2.put("enable_vibration", true);
+    channel2.put("vibration_pattern", new long[] {1L, 2L, 3L, 4L, 5L});
 
     HashMap<String, Object> channel3 = new HashMap<>();
     channel3.put("id", "id_3");
     channel3.put("name", "name_3");
     channel3.put("importance", 1);
     channel3.put("description", "description_3");
+    channel3.put("enable_vibration", true);
+    channel3.put("vibration_pattern", new ArrayList<Long>() {{add(1L); add(2L); add(3L);}});
 
     groupList.add(group1);
     groupList.add(group2);