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package com.example.speakplease;

import android.os.AsyncTask;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import com.google.cloud.translate.Translate;
import com.google.cloud.translate.TranslateOptions;
import com.google.cloud.translate.Translation;

public class SplashActivity extends AppCompatActivity 
 public static final String API_KEY = "xyz";
@Override
protected void onCreate(Bundle savedInstanceState) 
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_splash);
 final TextView textView = (TextView) findViewById(R.id.textView);
 final Handler textViewHandler = new Handler();
 new AsyncTask<Void, Void, Void>() 
 @Override
 protected Void doInBackground(Void... params) 
 TranslateOptions options = TranslateOptions.newBuilder().setApiKey(API_KEY).build();
 Translate translate = options.getService();
 final Translation translation = translate.translate("Hello World", Translate.TranslateOption.targetLanguage("de"));
 textViewHandler.post(new Runnable() 
 @Override
 public void run() 
 if (textView != null) 
 textView.setText(translation.getTranslatedText());
 
 
 );
 return null;
 
 .execute();
 
 

I am using Google Translation API to convert text in one language to another. In my application I wants user to speak in his/her native language using inbuilt microphone and it will be converted into written text and I stored it into the ArrayList. Now I wants to call a function which sends text in the ArrayList to the function as an argument and function will return translated text.Above code I tried is working and it was just to check whether my setup is working properly. But I am not able to implement using functions calling.