Clean code

app/src/main/java/com/fongmi/android/tv/bean/Result.java

@@ -63,7 +63,8 @@ public class Result {
 
     public static Result fromJson(String str) {
         try {
-            Type type = new TypeToken<LinkedHashMap<String, List<Filter>>>() {}.getType();
+            Type type = new TypeToken<LinkedHashMap<String, List<Filter>>>() {
+            }.getType();
             Gson gson = new GsonBuilder().registerTypeAdapter(type, new FiltersAdapter()).create();
             Result result = gson.fromJson(str, Result.class);
             return result == null ? empty() : result;
@@ -161,7 +162,7 @@ public class Result {
     }
 
     public String getSub() {
-        return sub;
+        return TextUtils.isEmpty(sub) ? "" : sub;
     }
 
     public Map<String, String> getHeaders() {

app/src/main/java/com/fongmi/android/tv/player/ExoUtil.java

@@ -1,7 +1,6 @@
 package com.fongmi.android.tv.player;
 
 import android.net.Uri;
-import android.text.TextUtils;
 
 import com.fongmi.android.tv.App;
 import com.fongmi.android.tv.bean.Result;
@@ -39,8 +38,7 @@ public class ExoUtil {
     }
 
     private static MediaItem.SubtitleConfiguration getConfig(Result result) {
-        if (TextUtils.isEmpty(result.getSub())) return null;
-        return new MediaItem.SubtitleConfiguration.Builder(Uri.parse(result.getSub())).setMimeType(MimeTypes.APPLICATION_SUBRIP).setSelectionFlags(C.SELECTION_FLAG_DEFAULT).build();
+        return result.getSub().isEmpty() ? null : new MediaItem.SubtitleConfiguration.Builder(Uri.parse(result.getSub())).setMimeType(MimeTypes.APPLICATION_SUBRIP).setSelectionFlags(C.SELECTION_FLAG_DEFAULT).build();
     }
 
     private static DataSource.Factory getFactory(Map<String, String> headers, String url) {