Fix model path/toenizer path dialog (#2896)

Summary: Pull Request resolved: #2896

Test Plan: {F1479684269}

Reviewed By: mergennachin, cbilgin

Differential Revision: D55828859

Pulled By: kirklandsign

fbshipit-source-id: 1175268a995a45d6d13a11f392258e2336813c66

Author: kirklandsign

examples/demo-apps/android/LlamaDemo/app/src/main/java/com/example/executorchllamademo/MainActivity.java

@@ -124,20 +124,20 @@ private void modelDialog() {
     AlertDialog.Builder tokenizerPathBuilder = new AlertDialog.Builder(this);
     tokenizerPathBuilder.setTitle("Select tokenizer path");
     modelPathBuilder.setSingleChoiceItems(
-        binFiles,
+        pteFiles,
         -1,
         (dialog, item) -> {
-          mTokenizerFilePath = binFiles[item];
+          mModelFilePath = pteFiles[item];
           mEditTextMessage.setText("");
           dialog.dismiss();
           tokenizerPathBuilder.create().show();
         });
 
     tokenizerPathBuilder.setSingleChoiceItems(
-        pteFiles,
+        binFiles,
         -1,
         (dialog, item) -> {
-          mModelFilePath = pteFiles[item];
+          mTokenizerFilePath = binFiles[item];
           Runnable runnable =
               new Runnable() {
                 @Override