fix bug

app/src/leanback/java/com/fongmi/android/tv/ui/activity/HomeActivity.java

@@ -304,7 +304,6 @@ public class HomeActivity extends BaseActivity implements CustomTitleView.Listen
     }
 
     private void setConfig(Config config, String success) {
-        if (TextUtils.isEmpty(config.getUrl())) return;
         if (config.getUrl().startsWith("file") && !PermissionX.isGranted(getActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
             PermissionX.init(this).permissions(Manifest.permission.WRITE_EXTERNAL_STORAGE).request((allGranted, grantedList, deniedList) -> load(config, success));
         } else {
@@ -393,7 +392,8 @@ public class HomeActivity extends BaseActivity implements CustomTitleView.Listen
         FileUtil.clearCache(new Callback() {
             @Override
             public void success() {
-                setConfig(VodConfig.get().getConfig().json("").save(), ResUtil.getString(R.string.config_refreshed));
+                Config config = VodConfig.get().getConfig().json("").save();
+                if (!config.isEmpty()) setConfig(config, ResUtil.getString(R.string.config_refreshed));
             }
         });
     }