Android Open Source - MiraSlide Main Activity

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License

The source code is released under:

Apache License

Java Source Code

package fr.cmoatoto.miraslide;
/*from   w w  w  .j av  a 2 s .co m*/
import java.lang.reflect.Field;

import android.content.DialogInterface;
import android.content.DialogInterface.OnDismissListener;
import android.content.DialogInterface.OnShowListener;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.util.SparseArray;
import android.view.Display;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewConfiguration;
import fr.cmoatoto.miraslide.animations.ShowHideControllerRunnable;
import fr.cmoatoto.miraslide.fragments.ControllerFragment;

/**
 * Main Activity. It is launch as MAIN LAUNCHER. The Activity handle 2 fragments. The first one is for selecting the PDF, the display and launch the
 * presentation. The second is for controlling the presentation, and show a chronometer, current slide... <br>
 * <br>
 * This Activity handle the presentation so it is really important that we don't switch to another activity. Otherwise the presentation will be set to pause
 * (and the Wireless Display will replicate your device screen) until we get back to the Activity.
 * 
 * @author CmoaToto
 */
public class MainActivity extends FragmentActivity {

  private static final String TAG = MainActivity.class.getName();

  // Selection fragment is the fragment to select the PDF & the display, then launch the presentation
  private View mSelectionFragmentView;
  private Fragment mSelectionFragment;

  // Controller fragment is the fragment to control the display, which slide to show etc...
  private View mControllerFragmentView;
  private ControllerFragment mControllerFragment;

  /** Menu element to show or hide the controller Fragment */
  private MenuItem mShowHideControllerActionBarButton;

  /** The presentation is a special kind of dialog whose purpose is to present content on a secondary display. */
  private PdfViewerPresentation mPresentation;

  // Handler & Runnable to control the controller view show/hide animation
  private Handler mShowHideControllerHandler = new Handler();
  private ShowHideControllerRunnable mShowHideControllerRunnable;

  /** The display where we show the presentation */
  private Display mDisplay;

  /** The path to the pdf file to show. In fact it is always the same path, as we copy the file in an internal folder */
  private String mPdfPath;

  /** The speaker's notes. Each item equals the notes for the associated page */
  private SparseArray<String> mNotes = new SparseArray<String>();

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    mSelectionFragmentView = findViewById(R.id.activity_main_fragment_selection);
    mControllerFragmentView = findViewById(R.id.activity_main_fragment_controller);

    mSelectionFragment = getSupportFragmentManager().findFragmentById(R.id.activity_main_fragment_selection);
    mControllerFragment = (ControllerFragment) getSupportFragmentManager().findFragmentById(R.id.activity_main_fragment_controller);

    // Set the controller view to INVISIBLE while creating to calculate its width for sliding.
    // Set to VISIBLE/GONE after the first slide.
    mShowHideControllerRunnable = new ShowHideControllerRunnable(mControllerFragmentView, mSelectionFragmentView);
    mControllerFragmentView.setVisibility(View.INVISIBLE);

    // Trick to always show the menu button in the ActionBar
    try {
      ViewConfiguration config = ViewConfiguration.get(this);
      Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
      if (menuKeyField != null) {
        menuKeyField.setAccessible(true);
        menuKeyField.setBoolean(config, false);
      }
    } catch (Exception ex) {
      // Ignore
    }

  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {

    // creation of the show/hide controller fragment menu buttonPdfPath
    mShowHideControllerActionBarButton = menu.add(Menu.NONE, 1, Menu.NONE, "Control slides");
    mShowHideControllerActionBarButton.setIcon(R.drawable.ic_action_keyboard);
    mShowHideControllerActionBarButton.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);

    // enable button only when slides are loaded and display selected
    mShowHideControllerActionBarButton.setEnabled(false);
    return super.onCreateOptionsMenu(menu);
  }

  /**
   * Enable or disable the 'Show/Hide Controller fragment' ActionBar Button. The button should be enabled only if slides are loaded and display selected.
   * 
   * @param enable
   *            : true if the button should be enable. false otherwise.
   */
  public void enableShowHideControllerActionBarButton(boolean enable) {
    mShowHideControllerActionBarButton.setEnabled(enable);
  }

  @Override
  public boolean onMenuItemSelected(int featureId, MenuItem item) {
    switch (item.getItemId()) {
    case 1:
      // If ShowHideController button is selected
      showHideController();
      break;
    }
    return super.onMenuItemSelected(featureId, item);
  }

  /** If the Controller fragment is shown, a back press hide it. */
  @Override
  public void onBackPressed() {
    if (mShowHideControllerRunnable.isShown()) {
      showHideController(false);
    } else {
      super.onBackPressed();
    }
  }

  /** Show or hide controller fragment */
  public void showHideController() {
    mShowHideControllerHandler.removeCallbacks(mShowHideControllerRunnable);
    mShowHideControllerHandler.post(mShowHideControllerRunnable);
  }

  /**
   * Show or hide controller fragment. If the controller fragment is already in the right position, this method do nothing.
   * 
   * @param show
   *            : If the controller should be shown after the operation.
   */
  public void showHideController(boolean show) {
    if (mShowHideControllerRunnable.isShown() != show) {
      showHideController();
    }
  }

  /**
   * Set the presentation (created in the selection fragment). This method creates listeners to control the visibility of the controller fragment and if the
   * mShowHideControllerActionBarButton should be enabled. Then it shows the presentation.
   * 
   * @param presentation
   *            : the presentation to show
   */
  public void launchPresentation() {
    mPresentation = new PdfViewerPresentation(this, mDisplay, mPdfPath);

    mPresentation.setOnShowListener(new OnShowListener() {

      @Override
      public void onShow(DialogInterface dialog) {

        showHideController(true);
        enableShowHideControllerActionBarButton(true);
        mControllerFragment.notifyViewPager();
      }
    });
    mPresentation.setOnDismissListener(new OnDismissListener() {

      @Override
      public void onDismiss(DialogInterface dialog) {
        showHideController(false);
        enableShowHideControllerActionBarButton(false);
      }
    });

    mPresentation.show();
  }

  /** return the Presentation if it has been created. A presentation needs a display and a pdf file */
  public PdfViewerPresentation getPresentation() {
    return mPresentation;
  }

  /** Stop the presentation and hide the controller fragment */
  public void stopPresentation() {
    showHideController(false);
    mPresentation = null;
    mControllerFragment.notifyViewPager();
  }

  /** return the display if there is one selected */
  public Display getDislay() {
    return mDisplay;
  }

  /** Set the display to show the presentation */
  public void setDisplay(Display display) {
    this.mDisplay = display;
  }

  /** return the path to the pdf file */
  public String getPdfPath() {
    return mPdfPath;
  }

  /** set the path to the pdf file */
  public void setPdfPath(String pdfPath) {
    this.mPdfPath = pdfPath;
  }

  /** return the path to the speaker's notes */
  public SparseArray<String> getNotes() {
    return mNotes;
  }

  /** set the speaker's notes */
  public void setNotes(SparseArray<String> notes) {
    this.mNotes = notes;
  }

}

Java Source Code List

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