Android Open Source - Handalfabet Create New Player

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.example.android;
//from  w  ww . j  a  va 2  s .  c o  m
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;

/**
 *    Copyright? 2012, Grupp02
 * 
 *     This file is part of Handalfabetet.
 *
 *   Handalfabetet is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   Handalfabetet is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with Handalfabetet.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * The CreateNewPlayer class is the Activity where new players are created
 * 
 * @author : Grupp02
 * @version : 2012-10-21, v1.0
 */
public class CreateNewPlayer extends Activity {

    // Audio Focus helper
    private AudioFocusHelper focusHelper;

    private static final int REQUEST_CODE = 1;
    private Bitmap bitmap;
    private ImageView imageView;
    private Button takePhotoButton;
    private DatabaseHelper db;
    private SoundSettings soundData;
    private EditText userName;
    private Button createPlayerButton;
    private final int zero = 0;
    private final int minLetters = 2;

    @Override
    public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_create_new_player);

  // Make sure we're running on Honeycomb or higher to use ActionBar APIs
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
      // getActionBar().setDisplayHomeAsUpEnabled( true );
  }

  if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
      focusHelper = new AudioFocusHelper(this);
  } else {
      focusHelper = null;
  }

  db = new DatabaseHelper(this);
  soundData = new SoundSettings(this);

  userName = (EditText) findViewById(R.id.username);
  imageView = (ImageView) findViewById(R.id.userImage);

  takePhotoButton = (Button) findViewById(R.id.takePic);
  createPlayerButton = (Button) findViewById(R.id.createPlayer);

  createPlayerButton.setEnabled(false);
  enableCreatePlayerButton();

  // TODO
  takePhotoButton.setEnabled(false);
    }

    @Override
    /**
     * onResume is overridden in order to utterly abandon sound focus if
     * sound has been turned off, or resume sound if on.
     * 
     */
    public void onResume() {
  super.onResume();

  if (SoundPlayer.getSoundEnabled() == false) {
      if (focusHelper != null) {
    focusHelper.abandonFocus();
      }
      SoundPlayer.stop();
  } else {
      SoundPlayer.resume();
  }
    }

    @Override
    public void onPause() {
  super.onPause(); // Always call the superclass method first

  // Pause sound when paused
  if (SoundPlayer.getSoundEnabled()) {
      SoundPlayer.pause();
  }
    }

    /**
     * Called when the user clicks the Create New Player button If the user name
     * already exits a popup dialog appears and ask the user to write another
     * name. If the name is valid and does not exits the activity finish and
     * store the name and/if picture in db
     * 
     * @param v
     */
    public void createPlayer(View v) {

  if (checkIfUserNameAlreadyExits(userName.getText().toString())) {
      if (checkIfUsernameIsValid(userName.getText().toString())) {
    playButton();
    BitmapDrawable drawable = (BitmapDrawable) imageView
      .getDrawable();
    Bitmap bitmap = drawable.getBitmap();
    User user = new User(userName.getText().toString(), zero,
      bitmap, zero, zero);
    db.addUser(user);
    soundData.addEntry(user);
    finish();
      }
  } else {
      // Show a dialog that the username is invalid
      AlertDialog.Builder builder = new AlertDialog.Builder(this);
      builder.setMessage("Anv?ndarnamnet ?r inte till?tet")
        .setCancelable(false)
        .setPositiveButton("OK",
          new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog,
          int id) {
            createPlayerButton.setEnabled(false);
        }
          });
      AlertDialog alert = builder.create();
      alert.show();
      playButton();
  }
    }

    /**
     * Checks if the username already exits
     * 
     * @param name
     *            The user name the player has typed in textfield
     * @return False if the user already exits
     */
    private boolean checkIfUserNameAlreadyExits(String name) {

  List<User> userList = db.getAllUsersName();

  for (User user : userList) {
      if (user.getName().equals(name)) {
    return false;
      }
  }
  return true;

    }

    /**
     * Test is the username is valid one.
     * 
     * @param name
     *            The string that will be tested
     * @return true if the username is ok
     */
    private boolean checkIfUsernameIsValid(String name) {

  if (name.length() <= minLetters) {
      return false;
  } else if (name.equals("")) {
      return false;
  } else {
      return true;
  }

    }

    /** Called when the user clicks the Choose Image button */
    public void pickImage(View View) {
  playButton();
  Intent intent = new Intent();
  intent.setType("image/*");
  intent.setAction(Intent.ACTION_GET_CONTENT);
  intent.addCategory(Intent.CATEGORY_OPENABLE);
  startActivityForResult(intent, REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK) {
      try {
    // We need to recyle unused bitmaps
    if (bitmap != null) {
        bitmap.recycle();
    }
    InputStream stream = getContentResolver().openInputStream(
      data.getData());
    bitmap = BitmapFactory.decodeStream(stream);
    stream.close();
    imageView.setImageBitmap(bitmap);
      } catch (FileNotFoundException e) {
    e.printStackTrace();
      } catch (IOException e) {
    e.printStackTrace();
      }
  }
  super.onActivityResult(requestCode, resultCode, data);
    }

    private void enableCreatePlayerButton() {
  userName.addTextChangedListener(new TextWatcher() {
      public void afterTextChanged(Editable s) {

      }

      public void beforeTextChanged(CharSequence s, int start, int count,
        int after) {

      }

      public void onTextChanged(CharSequence s, int start, int before,
        int count) {

    if (userName.getText().length() > 2) {
        createPlayerButton.setEnabled(true);
    } else {
        createPlayerButton.setEnabled(false);
    }
      }
  });
    }

    /**
     * The getAudioFocus method attempts to gain focus for playing audio. If
     * full access can't be gained, transitive access at a quiet volume is
     * attempted. If that can't be granted, false is returned.
     * 
     * @return : true if focus in some form is granted, otherwise false
     */
    private boolean getAudioFocus() {

  if (focusHelper != null) {
      if (!focusHelper.requestFocus()) {
    if (!focusHelper.requestQuietFocus()) {
        return false;
    } else {
        return true;
    }
      } else {
    return true;
      }
  }

  return false;
    }

    /**
     * playButton plays the button sound
     */
    public void playButton() {
  if (SoundPlayer.getSoundEnabled()) {
      if (focusHelper != null) {
    if (getAudioFocus()) {
        focusHelper.playButton();
    }
      } else {
    SoundPlayer.playButton(this);
      }
  }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.activity_game, menu);
  return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
  switch (item.getItemId()) {
  case android.R.id.home:
      NavUtils.navigateUpFromSameTask(this);
      finish();
      return true;
  }
  return super.onOptionsItemSelected(item);
    }

    /**
     * onStop is called when the activity is shut down, usually before being
     * destroyed. We need to stop any media players to properly free up memory.
     * The focus helper should lose focus anyway, but no reason not to tie up
     * loose ends.
     */
    @Override
    public void onStop() {
  // cancel any noises and abandon focus
  SoundPlayer.stop();

  if (focusHelper != null) {
      focusHelper.abandonFocus();
  }

  // call the super method
  super.onStop();
    }

    /**
     * onKeyDown overrides onKeyDown and allows code to be executed when the
     * back button is pushed in the simulator / on the mobile phone Since
     * pushing "back" won't necessarily call the destroy method as far as I
     * understand it.
     * 
     * @param keyCode
     *            : code of the key pressed
     * @param event
     *            : the event for the key pressed
     */
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == zero) {

      // continue backwards (kills current activity calling onDestroy)
      finish();

      return true;
  }

  return super.onKeyDown(keyCode, event);
    }
}
Java Source Code List
