[:en]Android: AsyncTask with ProgressBar[:]

[:en]AsyncTask with ProgressBar

Step 1:

Step 2:

package com.example.cambridge.asynctaskwithprogressbar;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    TextView textView;
    Button button;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // Initializing
        textView = (TextView)findViewById(R.id.textView);
        button   = (Button)findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
            // Create object MyTask
            MyTask myTask = new MyTask(MainActivity.this,textView,button);
            myTask.execute();
            button.setEnabled(false);
            }
        });

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Step 3:

package com.example.cambridge.asynctaskwithprogressbar;

import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.widget.Button;
import android.widget.TextView;

/**
 * Created by cambridge on 11/2/16.
 */
public class MyTask extends AsyncTask {
    // define variables
    Context context;
    TextView textView;
    Button button;
    ProgressDialog progressDialog;
    // Create constructor
    MyTask(Context context,TextView textView,Button button){
        this.context = context;
        this.textView = textView;
        this.button = button;

    }




    @Override
    protected String doInBackground(Void... params) {
        int i = 0;
        synchronized (this)
        {
          while (i<10)
          {
              try {
                  wait(1500);
                  i++;
                  publishProgress(i);
              } catch (InterruptedException e) {
                  e.printStackTrace();
              }

          }

        }

        return "Download completed...";
    }

    @Override
    protected void onPreExecute() {
        progressDialog = new ProgressDialog(context);
        progressDialog.setTitle("Download in progress...");
        progressDialog.setMax(10);
        progressDialog.setProgress(0);
        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        progressDialog.show();


    }

    @Override
    protected void onPostExecute(String result) {
       textView.setText(result);
        button.setEnabled(true);
        progressDialog.dismiss();
    }

    @Override
    protected void onProgressUpdate(Integer... values) {
        int progress = values[0];
        progressDialog.setProgress(progress);
        textView.setText("Download in progress...");

    }
}

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