Clean code

app/src/main/java/com/fongmi/android/tv/api/LiveConfig.java

@@ -87,7 +87,7 @@ public class LiveConfig {
 
     private void parseConfig(String json, Callback callback) {
         try {
-            if (!Json.valid(json)) parse(json);
+            if (Json.invalid(json)) parse(json);
             else parse(JsonParser.parseString(json).getAsJsonObject());
             handler.post(callback::success);
         } catch (Exception e) {

app/src/main/java/com/fongmi/android/tv/utils/Json.java

@@ -21,6 +21,10 @@ public class Json {
         }
     }
 
+    public static boolean invalid(String text) {
+        return !valid(text);
+    }
+
     public static String safeString(JsonObject obj, String key) {
         if (obj.has(key)) return obj.getAsJsonPrimitive(key).getAsString().trim();
         else return "";