Android Open Source - checkin Check In Activity

From Project

Back to project page checkin.
License

The source code is released under:
# License Copyright ? 2014 Sam Whited Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ?Software??), to deal ...
If you think the Android project checkin listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package com.samwhited.checkin;
/*  w  w w  .  j ava 2 s .com*/
import android.app.Activity;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.Intent;
import android.content.IntentSender;
import android.location.Location;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesClient;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.location.LocationClient;
import com.samwhited.checkin.database.CheckInDB;
import com.samwhited.checkin.model.CheckIn;
import com.samwhited.checkin.util.CheckInPreferences;
import com.samwhited.checkin.util.NetworkUtils;

import java.util.Calendar;

public class CheckInActivity extends Activity implements CheckInFragment.OnFragmentInteractionListener,
    GooglePlayServicesClient.OnConnectionFailedListener,
    GooglePlayServicesClient.ConnectionCallbacks {

  /*
   * Define a request code to send to Google Play services
     * This code is returned in Activity.onActivityResult
     */
  private final static int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;
  /**
   * A handler to use for long running tasks that shouldn't block the UI thread (uploads).
   */
  private CheckInHandler mHandler;
  /**
   * The location client for getting location data.
   */
  private LocationClient mLocationClient;

  /**
   * The database to use for storing checkins.
   */
  private CheckInDB db;

  @Override
  protected void onCreate(final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_check_in);
    if (savedInstanceState == null) {
      getFragmentManager().beginTransaction()
          .add(R.id.container, new CheckInFragment())
          .commit();
    }

    /*
     * Create a new location client, using the enclosing class to
         * handle callbacks.
         */
    mLocationClient = new LocationClient(this, this, this);

    /*
     * Create or open the database which we'll use to store check in's.
     */
    db = new CheckInDB(this);

    /**
     * Create a handler for handling events on the UI thread
     */
    mHandler = new CheckInHandler(this);

  }

  /*
     * Called when the Activity becomes visible.
     */
  @Override
  protected void onStart() {
    super.onStart();
    // Connect the client.
    mLocationClient.connect();
  }

  /*
   * Called when the Activity is no longer visible.
   */
  @Override
  protected void onStop() {
    // Disconnecting the client invalidates it.
    mLocationClient.disconnect();
    super.onStop();
  }

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

  protected void updateViews() {
    final CheckInFragment fragment = (CheckInFragment) getFragmentManager().findFragmentById(R.id.container);
    if (fragment != null) {
      fragment.updateLastCheckinText();
    }
  }

  private void handleCheckIn() {
    final Location location = getLocation();
    if (location == null) {
      Toast.makeText(
          this,
          getResources().getString(R.string.error_failed_to_get_location),
          Toast.LENGTH_LONG
      ).show();
      return;
    }


    final CheckInFragment fragment = (CheckInFragment)getFragmentManager().findFragmentById(R.id.container);
    final CheckIn checkIn;
    if (fragment != null) {
      checkIn = new CheckIn(location, fragment.getSelectedIcon());
    } else {
      checkIn = new CheckIn(location);
    }
    if (db.createRecords(checkIn) != -1) {
      CheckInPreferences.setLastCheckin(this, Calendar.getInstance().getTimeInMillis());
      updateViews();
      Toast.makeText(this,
          getResources().getString(R.string.checked_in)
              + " " + location.getLatitude() + ", " + location.getLongitude(),
          Toast.LENGTH_LONG
      ).show();
    }
  }

  private void handleUpload() {
    NetworkUtils.uploadCheckIns(db, mHandler);
  }

  @Override
  public boolean onOptionsItemSelected(final 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.
    switch (item.getItemId()) {
      case R.id.action_settings:
        startActivity(new Intent(this, SettingsActivity.class));
        return true;
      case R.id.action_list:
        handleList();
        return true;
      case R.id.action_upload:
        handleUpload();
        break;
    }
    return super.onOptionsItemSelected(item);
  }

  private void handleList() {
    startActivity(new Intent(this, CheckInList.class));
  }

  /**
   * Fetch some GPS data to be posted to the server.
   *
   * @return The location.
   */
  private Location getLocation() {
    final Location location;
    if (servicesConnected()) {
      location = mLocationClient.getLastLocation();
    } else {
      location = null;
    }

    return location;
  }

  /**
   * When a button in the view is pressed...
   */
  @Override
  public void onFragmentInteraction(final View view) {
    switch (view.getId()) {
      case R.id.button_check_in:
        handleCheckIn();
        break;
    }
  }

  /**
   * Called when we've connected to Google Play Services.
   *
   * @param bundle The bundle
   */
  @Override
  public void onConnected(final Bundle bundle) {
  }

  /**
   * Called when we've disconnected from Google Play Services.
   */
  @Override
  public void onDisconnected() {
    if (this.getResources() != null) {
      Toast.makeText(this,
          getResources().getString(R.string.error_location_lost),
          Toast.LENGTH_SHORT).show();
    }
  }

  /**
   * Called if we can't connect to Google Play Services.
   *
   * @param connectionResult The connection result.
   */
  @Override
  public void onConnectionFailed(final ConnectionResult connectionResult) {
    if (connectionResult.hasResolution()) {
      try {
        // Start an Activity that tries to resolve the error
        connectionResult.startResolutionForResult(
            this,
            CONNECTION_FAILURE_RESOLUTION_REQUEST);
                /*
                 * Thrown if Google Play services canceled the original
                 * PendingIntent
                 */
      } catch (IntentSender.SendIntentException e) {
        // Log the error
        e.printStackTrace();
      }
    } else {
            /*
             * If no resolution is available, display a dialog to the
             * user with the error.
             */
      GooglePlayServicesUtil.getErrorDialog(connectionResult.getErrorCode(),
          this,
          CONNECTION_FAILURE_RESOLUTION_REQUEST).show();
    }
  }

  public long getNumCheckIns() {
    return db.numRecords();
  }

  private boolean servicesConnected() {
    // Check that Google Play services is available
    final int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
    // If Google Play services is available
    if (ConnectionResult.SUCCESS == resultCode) {
      // In debug mode, log the status
      Log.d("Location Updates", "Google Play services is available.");
      // Continue
      return true;
    } else {
      // Get the error dialog from Google Play services
      final Dialog errorDialog = GooglePlayServicesUtil.getErrorDialog(
          resultCode,
          this,
          CONNECTION_FAILURE_RESOLUTION_REQUEST);

      // If Google Play services can provide an error dialog
      if (errorDialog != null) {
        // Create a new DialogFragment for the error dialog
        final ErrorDialogFragment errorFragment = new ErrorDialogFragment();
        // Set the dialog in the DialogFragment
        errorFragment.setDialog(errorDialog);
        // Show the error dialog in the DialogFragment
        if (getResources() != null) {
          errorFragment.show(getFragmentManager(),
              getResources().getString(R.string.title_location_updates)
          );
        }
      }
      return false;
    }
  }

  // Define a DialogFragment that displays the error dialog
  public static class ErrorDialogFragment extends DialogFragment {
    // Global field to contain the error dialog
    private Dialog mDialog;

    // Default constructor. Sets the dialog field to null
    public ErrorDialogFragment() {
      super();
      mDialog = null;
    }

    // Set the dialog to display
    public void setDialog(Dialog dialog) {
      mDialog = dialog;
    }

    // Return a Dialog to the DialogFragment.
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
      return mDialog;
    }
  }
}
Java Source Code List
