How to display JSON file in TextView in Android?

Question

I want to show this JSON in a TextView in my Activity.

This is my JSON,

{
    "AboutUs": [{
        "p_content": "Dr. Vineet Malhotra currently working as a Consultant urologist where job description requires to run the urology units at these hospitals and perform various endourology, reconstructive and laparoscopic procedures. Dr. Vineet Malhotra associated with the department of urology for the last ten years and have been exposed to different practice methodologies.Dr. Vineet Malhotra have a special interest in recent advances in minimally invasive procedures in urology.\n"
    }]
}

And this is my Activity where I want to display this JSON in TextView,

public class AboutUs extends AppCompatActivity {
    private String TAG=MainActivity.class.getSimpleName();
    private ProgressDialog pDialog;

    TextView tv;
    private static String url="http://softappsdemo.com/doctorplus/";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_about_us);
        Toolbar toolbar=(Toolbar)findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        new GetContacts().execute();
    }


    private class GetContacts extends AsyncTask<Void,Void,Void> {
        protected void onPreExecute(){
            super.onPreExecute();
            pDialog=new ProgressDialog(AboutUs.this);
            pDialog.setMessage("Please Wait ......");
            pDialog.setCancelable(false);
            pDialog.show();
        }
        protected Void doInBackground(Void... arg){
            Handler sh=new Handler();
            String jsonStr=sh.makeServiceCall(url);
            Log.e(TAG,"Response from url : " +jsonStr);
            if(jsonStr!=null){

                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);
                    JSONArray contacts = jsonObj.getJSONArray("AboutUs");

                        JSONObject c = contacts.getJSONObject(0);

                        String name = c.getString("p_content");




                }catch (final JSONException e){
                    Log.e(TAG,"Json parsing error: " +e.getMessage());
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(getApplicationContext(),"JSON parsing error: " +e.getMessage(),Toast.LENGTH_LONG).show();
                        }
                    });
                }

            }else {
                Log.e(TAG,"Could not get JSON from server.");
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),"could not get JSOM from server check logcat if possible " ,Toast.LENGTH_LONG).show();
                    }
                });
            }

            return null;
        }
        protected void onPostExecute(Void result){
            super.onPostExecute(result);
            if (pDialog.isShowing())
                pDialog.dismiss();
        }
    }
}

Where I should have to put the code for TextView?

Please help me guys. Thanks in advance.

Take your String name variable as global and in onPostExecute method set the content in TextView. — GrIsHu
– GrIsHu, Commented Sep 28, 2016 at 12:44
@champandorid Welcome I have posted my answer please mark it correct if it helped you. — GrIsHu
– GrIsHu, Commented Sep 28, 2016 at 12:52

GrIsHu · Accepted Answer · 2016-09-28 12:52:20Z

1

One way is to take your String name variable as global and in onPostExecute method set the content in TextView.

public class AboutUs extends AppCompatActivity {
    private String name;

.............................
..........................


 protected void onPostExecute(String result){
        super.onPostExecute(result);
        if (result != null)
            myTextView.setText(name);

    }

answered Sep 28, 2016 at 12:52

GrIsHu

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Comments

Ricardo · Accepted Answer · 2016-09-28 12:50:08Z

Change your AsyncTask to the following:

private class GetContacts extends AsyncTask<Void,Void,String> {
    protected void onPreExecute(){
        super.onPreExecute();
        pDialog=new ProgressDialog(AboutUs.this);
        pDialog.setMessage("Please Wait ......");
        pDialog.setCancelable(false);
        pDialog.show();
    }
    protected String doInBackground(Void... arg){
        Handler sh=new Handler();
        String jsonStr=sh.makeServiceCall(url);
        Log.e(TAG,"Response from url : " +jsonStr);
        if(jsonStr!=null){

            try {

                JSONObject jsonObj = new JSONObject(jsonStr);
                JSONArray contacts = jsonObj.getJSONArray("AboutUs");

                    JSONObject c = contacts.getJSONObject(0);

                    String name = c.getString("p_content");

                    return name;


            }catch (final JSONException e){
                Log.e(TAG,"Json parsing error: " +e.getMessage());
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),"JSON parsing error: " +e.getMessage(),Toast.LENGTH_LONG).show();
                    }
                });
            }

        }else {
            Log.e(TAG,"Could not get JSON from server.");
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(getApplicationContext(),"could not get JSOM from server check logcat if possible " ,Toast.LENGTH_LONG).show();
                }
            });
        }




        return null;
    }
    protected void onPostExecute(String result){
        super.onPostExecute(result);
        if (pDialog.isShowing())
            pDialog.dismiss();
        if (result != null)
            tv.setText(result);

    }
}

Alejandro Traver · Accepted Answer · 2016-09-28 12:55:49Z

package androidthirst.company.abhi.navugation;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.MenuItem;
import android.webkit.WebView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;

public class AboutUs extends AppCompatActivity {
    private String TAG=MainActivity.class.getSimpleName();
    private ProgressDialog pDialog;

    TextView tv;
    private static String url="http://softappsdemo.com/doctorplus/";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_about_us);
        Toolbar toolbar=(Toolbar)findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);


        new GetContacts().execute();
    }


    private class GetContacts extends AsyncTask<Void,Void,String> {
        protected void onPreExecute(){
            super.onPreExecute();
            pDialog=new ProgressDialog(AboutUs.this);
            pDialog.setMessage("Please Wait ......");
            pDialog.setCancelable(false);
            pDialog.show();
        }
        protected String doInBackground(Void... arg){
            Handler sh=new Handler();
            String jsonStr=sh.makeServiceCall(url);
            Log.e(TAG,"Response from url : " +jsonStr);
            if(jsonStr!=null){

                try {

                    JSONObject jsonObj = new JSONObject(jsonStr);
                    JSONArray contacts = jsonObj.getJSONArray("AboutUs");

                        JSONObject c = contacts.getJSONObject(0);

                        String name = c.getString("p_content");
                        return name;
                }catch (final JSONException e){
                    Log.e(TAG,"Json parsing error: " +e.getMessage());
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(getApplicationContext(),"JSON parsing error: " +e.getMessage(),Toast.LENGTH_LONG).show();
                        }
                    });
                }

            }else {
                Log.e(TAG,"Could not get JSON from server.");
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),"could not get JSOM from server check logcat if possible " ,Toast.LENGTH_LONG).show();
                    }
                });
            }




            return null;
        }
        protected void onPostExecute(String result){
            super.onPostExecute(result);
            if (pDialog.isShowing())
                pDialog.dismiss();
            tv.setText(result);

        }
    }
}

Harish Gyanani · Accepted Answer · 2016-09-28 13:01:07Z

0

1.add tv = (TextView)findViewById(R.id.txt);//add this line in your onCreate method before

new GetContacts().execute(); line.

change
private class GetContacts extends AsyncTask<Void,Void,Void>

with

private class GetContacts extends AsyncTask<String,Void,Void>

because you need String in result to display in TextView
return name; instead of null in doInBackground method
protected void onPostExecute(Void result){ replace Void in parameter with String because we are going to get result in String.
add tv.setText(result); after super.onPostExecute(result); in onPostExecute method.

answered Sep 28, 2016 at 13:01

Harish Gyanani

1,4053 gold badges24 silver badges43 bronze badges

Comments

Gilson Junior · Accepted Answer · 2016-09-28 14:09:54Z

public class MainActivity extends AppCompatActivity {

TextView tv = null;
InputStream is = null;
public static final String URL = "http://www.projectconnect.com.br/transportefacil/api/pedido/list/";
String json;
HttpResponse httpResponse = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    tv = (TextView) findViewById(R.id.tv_json);

    Task task = new Task();
    task.execute();
}

private class Task extends AsyncTask<Bundle, Void, String> {

    protected String doInBackground(Bundle... parametros) {

        HttpGet httpGet = new HttpGet(URL);

        httpGet.setHeader("Content-type", "application/json");
        httpGet.setHeader("Accept-Encoding", "compress, gzip");
        httpGet.setHeader("Accept", "application/json");

        DefaultHttpClient httpClient = new DefaultHttpClient();

        try {
            httpResponse = httpClient.execute(httpGet);

            is = AndroidHttpClient.getUngzippedContent(httpResponse.getEntity());

            json = Util.converteGzipEmJson(is);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return json;
    }

    protected void onPostExecute(String json) {
        tv.setText(json);
    }
}

}

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