package com.example.async;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

/**
 * @author Prabu AsyncTask exmple
 *
 */
public class MainActivity extends Activity {
    private Button button;
    private EditText time;
    private TextView finalResult;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        time = (EditText) findViewById(R.id.et_time);
        button = (Button) findViewById(R.id.btn_do_it);
        finalResult = (TextView) findViewById(R.id.tv_result);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AsyncTaskRunner runner = new AsyncTaskRunner();
                String sleepTime = time.getText().toString();
                runner.execute(sleepTime);
            }
        });
    }

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

    private class AsyncTaskRunner extends AsyncTask<String, String, String> {

        private String resp;

        @Override
        protected String doInBackground(String... params) {
            publishProgress("Sleeping..."); // Calls onProgressUpdate()
            try {
                // Do your long operations here and return the result
                int time = Integer.parseInt(params[0]);
                // Sleeping for given time period
                Thread.sleep(time);
                resp = "Slept for " + time + " milliseconds";
            } catch (InterruptedException e) {
                e.printStackTrace();
                resp = e.getMessage();
            } catch (Exception e) {
                e.printStackTrace();
                resp = e.getMessage();
            }
            return resp;
        }

        /*
         * (non-Javadoc)
         *
         * @see android.os.AsyncTask#onPostExecute(java.lang.Object)
         */
        @Override
        protected void onPostExecute(String result) {
            // execution of result of Long time consuming operation
            finalResult.setText(result);
        }

        /*
         * (non-Javadoc)
         *
         * @see android.os.AsyncTask#onPreExecute()
         */
        @Override
        protected void onPreExecute() {
            // Things to be done before execution of long running operation. For
            // example showing ProgessDialog
        }

        /*
         * (non-Javadoc)
         *
         * @see android.os.AsyncTask#onProgressUpdate(Progress[])
         */
        @Override
        protected void onProgressUpdate(String... text) {
            finalResult.setText(text[0]);
            // Things to be done while execution of long running operation is in
            // progress. For example updating ProgessDialog
        }
    }
}