edu.chl.dat255.sofiase.readyforapet.viewcontroller.WalkActivity.java Source code

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Here is the source code for edu.chl.dat255.sofiase.readyforapet.viewcontroller.WalkActivity.java

Source

package edu.chl.dat255.sofiase.readyforapet.viewcontroller;

import java.util.Timer;
import java.util.TimerTask;
import edu.chl.dat255.sofiase.readyforapet.R;
import edu.chl.dat255.sofiase.readyforapet.util.LocationHelper;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.NavUtils;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Class WalkActivity that creates an instance of LoationHelper and enables the GPS.
 * Measures how far the user walks with the pet and sends that back to PetActivity.
 *
 * Copyright (C) 2013 Katrin Miettinen, Linnea Pettersson, Sofia Selin, Johanna Ydergard
 * 
 * Licensed under the MIT license. This file must only be used in accordance with the license. 
 *
 */
public class WalkActivity extends Activity {

    private TextView displayDistance;
    private ImageView dogPrints;
    private int delay = 0;
    private int period = 15000;
    private int distance = 0;
    private Timer timer;
    private Handler handler = new Handler();
    private Handler uiHandler = new Handler();
    private LocationHelper location;
    private AnimationDrawable anim;
    private Button startWalking;
    private Button stopWalking;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.walkactivity);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

        dogPrints = (ImageView) findViewById(R.id.dogprints);

        startWalking = (Button) findViewById(R.id.startwalking);
        stopWalking = (Button) findViewById(R.id.stopwalking);

        stopWalking.setEnabled(false);

        //Start walking button
        startWalking.setOnClickListener(new OnClickListener() {
            /**
             * Enables GPS when start walking. Starts to measure the distance.
             * Checks if the user has GPS turned on, otherwise asks if it wants to turn the GPS on.
             * 
             */
            public void onClick(View v) {

                stopWalking.setEnabled(true);
                startWalking.setEnabled(false);

                location = new LocationHelper(WalkActivity.this);

                //Checking if the GPS is enabled, else let the user start GPS if wanted.
                if (location.gpsEnabled()) {
                    Toast.makeText(WalkActivity.this, "GPS is Enabled on your devide", Toast.LENGTH_SHORT).show();
                }

                else {
                    showGPSDisabledAlert();
                }

                //Timer to update the textview with the distance walked.
                try {
                    timer = new Timer();
                    timer.schedule(myTimerTask, delay, period);
                }

                catch (Exception e) {
                    e.printStackTrace();
                }

                //Animated dogprints on the screen
                dogPrints.setVisibility(View.VISIBLE);
                dogPrints.setBackgroundResource(R.anim.animation3);
                anim = (AnimationDrawable) dogPrints.getBackground();
                anim.start();
                uiHandler.postDelayed(makeViewStop, 7000);
            }
        });

        stopWalking.setOnClickListener(new OnClickListener() {
            /**
             * Method onClick for the stop walking button.
             * Stops the GPS and sends a result, the distance, to PetActivity.
             * 
             * @param v - View
             */
            public void onClick(View v) {
                distance = (int) Math.round(location.getDistance());

                //Turn off GPS
                location.killLocationServices();

                //If timer is not initiated, the timer should not be stopped
                if (timer != null) {
                    timer.cancel();
                }

                //setting a resultCode with the distance walked that is sent to PetActivity
                WalkActivity.this.setResult(distance);
                WalkActivity.this.finish();

            }
        });

    }

    //Stops the dogprint animation
    Runnable makeViewStop = new Runnable() {
        @Override
        public void run() {
            anim.stop();
        }
    };

    //Updates the textview with how far the user has walked
    TimerTask myTimerTask = new TimerTask() {
        @Override
        public void run() {
            handler.post(new Runnable() {
                @Override
                public void run() {
                    displayDistance = (TextView) findViewById(R.id.distance);
                    displayDistance
                            .setText("You have walked\n" + Math.round(location.getDistance()) + "\nmeters so far.");
                }
            });

        }

    };

    /**
     * If GPS is turned off, lets the user either choose to enable GPS or cancel.
     * 
     */
    private void showGPSDisabledAlert() {
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
        alertDialogBuilder.setMessage("GPS is disabled on your device. Would you like to enable it?")
                .setCancelable(false)
                .setPositiveButton("Go to Settings Page To Enable GPS", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        Intent callGPSSettingIntent = new Intent(
                                android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                        startActivity(callGPSSettingIntent);
                    }
                });
        alertDialogBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                dialog.cancel();
            }
        });
        AlertDialog alert = alertDialogBuilder.create();
        alert.show();
    }

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        this.finish();

        if (location != null) {
            location.killLocationServices();
        }

    }

    /**
     * Configurates the navigate Up button in this activity
     *
     * @param item - MenuItem
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

}