Android Open Source - Operation-Valkyrie Main Activity

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Back to project page Operation-Valkyrie.

License

The source code is released under:

Terms and conditions Preamble: This Agreement, signed on Jun 10, 2012 [hereinafter: Effective Date] governs the relationship between the Enduser, a private person, (hereinafter: Licensee) and Paul N...

Java Source Code

package valkyrie.ui;
//w  w w.  ja  va 2  s. co  m
import java.io.File;

import valkyrie.file.DecodeBitmaps;
import valkyrie.file.FileManager;
import valkyrie.filter.FilterManager;
import valkyrie.filter.ascii.Ascii;
import valkyrie.main.R;
import valkyrie.ui.gallery.GalleryActivity;
import valkyrie.ui.preview.CameraPreviewViewCV;
import valkyrie.widget.MultiDirectionSlidingDrawer;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.drawable.AnimationDrawable;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.KeyEvent;
import android.view.SoundEffectConstants;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageButton;
import android.widget.Toast;

/**
 * 
 * COPYRIGHT: Paul Neuhold, Laurenz Theuerkauf, Alexander Ritz, Jakob
 * Schweighofer, Milo Tischler ? Milo Tischler, Jakob Schweighofer, Alexander
 * Ritz, Paul Neuhold, Laurenz Theuerkauf
 * 
 */

/**
 * The application main activity, holds the camera preview, the camera trigger and filter options
 */
public class MainActivity extends Activity {
  private static final String TAG = "MainActivity";

  private FilterManager filterManager = null;
  private MediaPlayer shootSound = null;
  private AudioManager audioManager = null;
  private int volume = 0;
  private FileManager fileManager = null;

  private CameraPreviewViewCV cameraPreview = null;

  /**
   * Initializes the layout, the camera preview, the filter manager, sounds and the layout manager.
   * Sets the activity to fullscreen and warns if the sd card is mounted.
   * 
   * @param Bundle savedInstanceState
   */
  @Override
  public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    // Disable window title bar, for full screen camera preview
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);

    final Window window = this.getWindow();
    window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

    // Set activity layout
    this.setContentView(R.layout.main);

    // initialize LayoutManager
    LayoutManager.getInstance().setMainActivity(this);

    // initialize CameraPreviewView with OpenCV
    this.cameraPreview = (CameraPreviewViewCV) this.findViewById(R.id.camera_preview_view);

    // initialize FilterManager
    this.filterManager = new FilterManager(this.getApplicationContext(), R.array.filters, this.cameraPreview);
    this.filterManager.setActiveFilter(new Ascii());

    // initialize FileManager
    this.fileManager = new FileManager(this.getApplicationContext());

    // initialize sound management
    this.shootSound = MediaPlayer.create(this.getApplicationContext(),
        Uri.parse("file:///system/media/audio/ui/camera_click.ogg"));

    this.audioManager = (AudioManager) this.getApplicationContext().getSystemService(Context.AUDIO_SERVICE);
    this.volume = audioManager.getStreamVolume(AudioManager.STREAM_NOTIFICATION);

    // check if SD Card is mounted
    String state = Environment.getExternalStorageState();
    if (!Environment.MEDIA_MOUNTED.equals(state)) {
      Toast.makeText(this.getApplicationContext(), "WARNING: SD Card not mounted!", Toast.LENGTH_SHORT).show();
    }
  }

  /**
   * Takes a picture with the camera and plays the trigger sound / animation. Saves the bitmap to the gallery.
   * 
   * @param View view
   */
  public void takePicture(View view) {
    Log.i(TAG, "clicked: takePicture");

    if (this.cameraPreview.isLocked()) {
      Log.e(TAG, "camera is locked");
      return;
    }

    // Play animation
    ImageButton triggerAnimationSpace = (ImageButton) this.findViewById(R.id.trigger_animation);
    triggerAnimationSpace.setBackgroundResource(R.drawable.trigger_animation);
    AnimationDrawable triggerAnimation = (AnimationDrawable) triggerAnimationSpace.getBackground();
    triggerAnimation.setVisible(false, true);
    triggerAnimation.start();

    // Just a dummy text to appear..
    // Toast.makeText(this.getApplicationContext(), "Take Picture Clicked", Toast.LENGTH_SHORT).show();

    // Play take picture sound effect
    if (volume != 0) {
      this.shootSound.start();
    } else {
      view.playSoundEffect(SoundEffectConstants.CLICK);
    }

    // Actually take picture
    Bitmap bitmap = this.cameraPreview.takePicture();

    if (bitmap == null) {
      Log.e(TAG, "takePicture returned null bitmap");
      this.cameraPreview.resume();
      return;
    }

    // Save image to gallery
    this.fileManager.saveImageToGallery(bitmap);
    DecodeBitmaps.done = false;

    if (bitmap != null) {
      bitmap.recycle();
    }

    this.cameraPreview.resume();
  }

  /**
   * Intent the gallery activity for displaying the already shot pictures if the folder is not empty. 
   * Checks if the picture folder exists and displays the message if the folder is empty. 
   * 
   * @param View view
   */
  public void showGallery(View view) {
    Log.i("TAG", "clicked: showGallery");

    view.playSoundEffect(SoundEffectConstants.CLICK);

    Intent myIntent = new Intent(MainActivity.this, GalleryActivity.class);

    File galleryFiles = new File(Environment.getExternalStorageDirectory() + "/Valkyrie/Gallery/");

    if (galleryFiles.listFiles() != null) {

      if ((galleryFiles.listFiles().length == 0)) {
        Toast.makeText(this.getApplicationContext(), "There are no Pictures to display", Toast.LENGTH_SHORT)
            .show();
        DecodeBitmaps.done = false;
        new DecodeBitmaps(0);
      }
    } else if ((galleryFiles.listFiles() == null)) {
      Toast.makeText(this.getApplicationContext(), "There are no Pictures to display", Toast.LENGTH_SHORT).show();
    }

    if ((galleryFiles.listFiles() != null)) {
      if ((galleryFiles.listFiles().length != 0)) {
        // Just a dummy text to appear..
        DecodeBitmaps.done = false;
        new DecodeBitmaps(0);
        Log.d(TAG, "filelist length :" + galleryFiles.listFiles().length);
        Toast.makeText(this.getApplicationContext(), "Welcome to the Gallery", Toast.LENGTH_SHORT).show();
        view.playSoundEffect(SoundEffectConstants.CLICK);

        try {
          MainActivity.this.startActivity(myIntent);
        } catch (Exception e) {

        }
      }
    }

  }

  /**
   * Toggles the live preview of the filter effect
   * 
   * @param View view
   */
  public void toggleFilterEffect(View view) {
    Log.i("Tag", "clicked: toggleFilterEffect");

    view.playSoundEffect(SoundEffectConstants.CLICK);

    if (this.cameraPreview.isFilterDisplayed()) {

      ImageButton toggle = (ImageButton) this.findViewById(R.id.filter_effect_toggle);
      toggle.setImageResource(R.drawable.preview_on);

      this.cameraPreview.toggleFilter(false);
    } else {

      ImageButton toggle = (ImageButton) this.findViewById(R.id.filter_effect_toggle);
      toggle.setImageResource(R.drawable.preview_off);

      this.cameraPreview.toggleFilter(true);
    }

    // TODO: Reset or delete or reorganize Shared Prefs (options)
  }

  /**
   * If open, closes the filter options
   */
  @Override
  public void onBackPressed() {
    MultiDirectionSlidingDrawer multiDirectionSlidingDrawer = (MultiDirectionSlidingDrawer) this
        .findViewById(R.id.filter_options_panel);

    if (multiDirectionSlidingDrawer.isOpened()) {
      multiDirectionSlidingDrawer.animateClose();
    } else {
      super.onBackPressed();
    }
  }

  /**
   * If open, closes the filter options, else opens the filter options
   * 
   * @param int keyCode
   * @param KeyEvent event
   */
  @Override
  public boolean onKeyUp(int keyCode, KeyEvent event) {
    MultiDirectionSlidingDrawer multiDirectionSlidingDrawer = (MultiDirectionSlidingDrawer) this
        .findViewById(R.id.filter_options_panel);

    if (keyCode == KeyEvent.KEYCODE_MENU) {
      if (multiDirectionSlidingDrawer.isOpened()) {
        multiDirectionSlidingDrawer.animateClose();
      } else {
        multiDirectionSlidingDrawer.animateOpen();
      }
    }

    return super.onKeyUp(keyCode, event);
  }

  /**
   * Not implemented
   */
  @Override
  protected void onPause() {
    Log.i(TAG, "onPause called");
    super.onPause();
  }

  /**
   * Not implemented
   */
  @Override
  protected void onResume() {
    Log.i(TAG, "onResume called");    
    super.onResume();
  }

}

Java Source Code List

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