Android Open Source - fullScreenApp Fullscreen Activity

• Back to UI/application  ↑

From Project

Back to project page fullScreenApp.

License

The source code is released under:

MIT License

Java Source Code

package com.example.fullscreen;
/* w ww . j ava  2  s  . co m*/
import com.example.fullscreen.util.SystemUiHider;

import android.annotation.TargetApi;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;

/**
 * An example full-screen activity that shows and hides the system UI (i.e.
 * status bar and navigation/system bar) with user interaction.
 * 
 * @see SystemUiHider
 */
public class FullscreenActivity extends ActionBarActivity
{
  /**
   * Whether or not the system UI should be auto-hidden after
   * {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
   */
  private static final boolean AUTO_HIDE = true;

  /**
   * If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
   * user interaction before hiding the system UI.
   */
  private static final int AUTO_HIDE_DELAY_MILLIS = 3000;

  /**
   * If set, will toggle the system UI visibility upon interaction. Otherwise,
   * will show the system UI visibility upon interaction.
   */
  private static final boolean TOGGLE_ON_CLICK = false;

  /**
   * The flags to pass to {@link SystemUiHider#getInstance}.
   */
  private static final int HIDER_FLAGS = SystemUiHider.FLAG_HIDE_NAVIGATION;

  /**
   * The instance of the {@link SystemUiHider} for this activity.
   */
  private SystemUiHider mSystemUiHider;

  @Override
  protected void onCreate( Bundle savedInstanceState )
  {
    super.onCreate( savedInstanceState );
    if( Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB )
      requestWindowFeature( Window.FEATURE_NO_TITLE );

    setContentView( R.layout.activity_fullscreen );

    final View controlsView = findViewById( R.id.fullscreen_content_controls );
    final View contentView = findViewById( R.id.fullscreen_content );

    // Set up an instance of SystemUiHider to control the system UI for
    // this activity.
    mSystemUiHider = SystemUiHider.getInstance( this, contentView,
                                               HIDER_FLAGS );
    mSystemUiHider.setup( );
    mSystemUiHider
      .setOnVisibilityChangeListener( new SystemUiHider.OnVisibilityChangeListener( ) {
        // Cached values.
        int mControlsHeight;
        int mShortAnimTime;

        @Override
        @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
        public void onVisibilityChange( boolean visible )
        {
          if( Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2 )
          {
            // If the ViewPropertyAnimator API is available
            // (Honeycomb MR2 and later), use it to animate the
            // in-layout UI controls at the bottom of the
            // screen.
            if( mControlsHeight == 0 )
            {
              mControlsHeight = controlsView.getHeight( );
            }
            if( mShortAnimTime == 0 )
            {
              mShortAnimTime = getResources( ).getInteger(
                android.R.integer.config_shortAnimTime );
            }
            controlsView
              .animate( )
              .translationY( visible ? 0 : mControlsHeight )
              .setDuration( mShortAnimTime );
          }
          else
          {
            // If the ViewPropertyAnimator APIs aren't
            // available, simply show or hide the in-layout UI
            // controls.
            controlsView.setVisibility( visible ? View.VISIBLE
                                       : View.GONE );
          }

          if( visible && AUTO_HIDE )
          {
            // Schedule a hide().
            delayedHide( AUTO_HIDE_DELAY_MILLIS );
          }
        }
      } );

    // Set up the user interaction to manually show or hide the system UI.
    contentView.setOnClickListener( new View.OnClickListener( ) {
        @Override
        public void onClick( View view )
        {
          if( TOGGLE_ON_CLICK )
          {
            mSystemUiHider.toggle( );
          }
          else
          {
            mSystemUiHider.show( );
          }
        }
      } );

    // Set up action bar.
    final ActionBar actionBar = getSupportActionBar( );

    // Specify that the Home button should show an "Up" caret, indicating
    // that touching the
    // button will take the user one step up in the application's hierarchy.
    actionBar.setDisplayHomeAsUpEnabled( false );

    // Upon interacting with UI controls, delay any scheduled hide()
    // operations to prevent the jarring behavior of controls going away
    // while interacting with the UI.
    findViewById( R.id.dummy_button ).setOnTouchListener(
      mDelayHideTouchListener );
  }

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

    // Trigger the initial hide() shortly after the activity has been
    // created, to briefly hint to the user that UI controls
    // are available.
    delayedHide( 100 );
  }

  /**
   * Touch listener to use for in-layout UI controls to delay hiding the
   * system UI. This is to prevent the jarring behavior of controls going away
   * while interacting with activity UI.
   */
  View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener( ) {
    @Override
    public boolean onTouch( View view, MotionEvent motionEvent )
    {
      if( AUTO_HIDE )
      {
        delayedHide( AUTO_HIDE_DELAY_MILLIS );
      }
      return false;
    }
  };

  Handler mHideHandler = new Handler( );
  Runnable mHideRunnable = new Runnable( ) {
    @Override
    public void run( )
    {
      mSystemUiHider.hide( );
    }
  };

  /**
   * Schedules a call to hide() in [delay] milliseconds, canceling any
   * previously scheduled calls.
   */
  private void delayedHide( int delayMillis )
  {
    mHideHandler.removeCallbacks( mHideRunnable );
    mHideHandler.postDelayed( mHideRunnable, delayMillis );
  }
}

Java Source Code List

• Back to UI/application  ↑