PR zo0r#926: Merge remote-tracking branch 'maxkomarychev/default-channel-name'

Author: Mike McCartney

android/src/main/java/com/dieam/reactnativepushnotification/modules/RNPushNotificationConfig.java

@@ -31,7 +31,10 @@ public RNPushNotificationConfig(Context context) {
 
     public String getChannelName() {
         try {
-            return metadata.getString(KEY_CHANNEL_NAME);
+            final String name = metadata.getString(KEY_CHANNEL_NAME);
+            if (name != null && name.length() > 0) {
+                return name;
+            }
         } catch (Exception e) {
             Log.w(RNPushNotification.LOG_TAG, "Unable to find " + KEY_CHANNEL_NAME + " in manifest. Falling back to default");
         }
@@ -40,7 +43,10 @@ public String getChannelName() {
     }
     public String getChannelDescription() {
         try {
-            return metadata.getString(KEY_CHANNEL_DESCRIPTION);
+            final String description = metadata.getString(KEY_CHANNEL_DESCRIPTION);
+            if (description != null) {
+                return description;
+            }
         } catch (Exception e) {
             Log.w(RNPushNotification.LOG_TAG, "Unable to find " + KEY_CHANNEL_DESCRIPTION + " in manifest. Falling back to default");
         }