TextView in static void main

Question

So i am trying to get the translated text and show it in my textview.
How should i do it? And i notice that the translate must use it in the static void main... if not will have problem occur.
(java beginner)

public class TranslateText extends AppCompatActivity {
TextView TText;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_translate_text);
    TText = findViewById(R.id.TranslatedView);

}

public static void main(String[] args) throws IOException {
    String text = "Hello world!";
    System.out.println("Translated text: " + translate("en", "zh-CN",text));
}

private static String translate(String langFrom, String langTo, String text) throws IOException {

    String urlStr = "https://script.google.com/macros/s/AKfycbzjyCsF9eoo7MR38wVg0WFU9oxc9I2aU4Bt4YPEiqtRLJLx0XU/exec" +
            "?q=" + URLEncoder.encode(text, "UTF-8") +
            "&target=" + langTo +
            "&source=" + langFrom;
    URL url = new URL(urlStr);
    StringBuilder response = new StringBuilder();
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    con.setRequestProperty("User-Agent", "Mozilla/5.0");
    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String inputLine;
    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();
    return response.toString();
}

why are you using public static void main(String[] args){} inside the android app? — Ganesh Gudghe, Jan 28 '19 at 09:46
I am referring here - https://stackoverflow.com/a/48159904/9589884 I am doing the translation thing, and it is not working if the translate("en", "zh-CN",text) is outside of the public static void main. @GaneshGudghe — Jt Tan, Jan 28 '19 at 09:54
So is thr anyway can i use the translated text(zh-CN) and show it in my textview? — Jt Tan, Jan 28 '19 at 09:55
use asyntask and execute your translate() inside doinbackground — Ganesh Gudghe, Jan 28 '19 at 09:58

score 2 · Accepted Answer · edited Jan 28 '19 at 10:46

use something like this.

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class TranslateText extends AppCompatActivity {
TextView TText;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_translate_text);
    TText = findViewById(R.id.TranslatedView);
    String text = "Hello world!";
    new TransText(text).execute();
}


private String translate(String langFrom, String langTo, String text) throws IOException {

    String urlStr = "https://script.google.com/macros/s/AKfycbzjyCsF9eoo7MR38wVg0WFU9oxc9I2aU4Bt4YPEiqtRLJLx0XU/exec" +
            "?q=" + URLEncoder.encode(text, "UTF-8") +
            "&target=" + langTo +
            "&source=" + langFrom;
    URL url = new URL(urlStr);
    StringBuilder response = new StringBuilder();
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    con.setRequestProperty("User-Agent", "Mozilla/5.0");
    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String inputLine;
    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();
    return response.toString();
}

private class TransText extends AsyncTask<Void, Void, String> {
    String text;

    public TransText(String text) {
        this.text = text;
    }

    @Override
    protected String doInBackground(Void... voids) {
        String result = null;
        try {
            result = translate("en", "zh-CN", text);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        if(result != null){
            TText.setText(result);
        }
    }
}
}

Exception in thread "main" java.lang.NoSuchMethodException: com.example.jt.audiototextconversion.TranslateText.main([Ljava.lang.String;) at java.lang.Class.getMethod(Class.java:1786) — Jt Tan, Jan 28 '19 at 10:07
i refer here stackoverflow.com/a/48159904/9589884. but wanna use it in textview, is thr anyway? — Jt Tan, Jan 28 '19 at 10:12
I have edited the answer please replace whole class with above code — Akshat, Jan 28 '19 at 10:25

score 1 · Answer 2 · edited Jan 28 '19 at 10:46

1

Android doesn't need a main() method to execute as like in Java Apps.
And also You dont need to write those http calls to convert the string value.
Android provides you a string.xml files where you can create your own file WRT to your localization but key those string should be same and you can assign it to textview.

edited Jan 28 '19 at 10:46

Phantômaxx

37,901
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answered Jan 28 '19 at 10:00

Amith

83
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10

The translation part dont have problem, i tested it. But i duno how to use the translate("en", "zh-CN",text) in my textview. Sorry i am a new learner – Jt Tan Jan 28 '19 at 10:03

TextView in static void main

2 Answers2