Android Open Source - VisEQ System Ui Hider Honeycomb

From Project

Back to project page VisEQ.

License

The source code is released under:

Copyright (c) 2012, Spotify AB All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:...

If you think the Android project VisEQ 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.lsu.vizeq.util;
//from   w  ww .j  a  v  a  2  s  . com
import android.annotation.TargetApi;
import android.app.Activity;
import android.os.Build;
import android.view.View;
import android.view.WindowManager;

/**
 * An API 11+ implementation of {@link SystemUiHider}. Uses APIs available in Honeycomb and later (specifically {@link View#setSystemUiVisibility(int)}) to show and hide the system
 * UI.
 */
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public class SystemUiHiderHoneycomb extends SystemUiHiderBase
{
  /**
   * Flags for {@link View#setSystemUiVisibility(int)} to use when showing the system UI.
   */
  private int mShowFlags;

  /**
   * Flags for {@link View#setSystemUiVisibility(int)} to use when hiding the system UI.
   */
  private int mHideFlags;

  /**
   * Flags to test against the first parameter in {@link android.view.View.OnSystemUiVisibilityChangeListener#onSystemUiVisibilityChange(int)} to determine the system UI
   * visibility state.
   */
  private int mTestFlags;

  /**
   * Whether or not the system UI is currently visible. This is cached from {@link android.view.View.OnSystemUiVisibilityChangeListener}.
   */
  private boolean mVisible = true;

  /**
   * Constructor not intended to be called by clients. Use {@link SystemUiHider#getInstance} to obtain an instance.
   */
  protected SystemUiHiderHoneycomb(Activity activity, View anchorView, int flags)
  {
    super(activity, anchorView, flags);

    mShowFlags = View.SYSTEM_UI_FLAG_VISIBLE;
    mHideFlags = View.SYSTEM_UI_FLAG_LOW_PROFILE;
    mTestFlags = View.SYSTEM_UI_FLAG_LOW_PROFILE;

    if ((mFlags & FLAG_FULLSCREEN) != 0)
    {
      // If the client requested fullscreen, add flags relevant to hiding
      // the status bar. Note that some of these constants are new as of
      // API 16 (Jelly Bean). It is safe to use them, as they are inlined
      // at compile-time and do nothing on pre-Jelly Bean devices.
      mShowFlags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
      mHideFlags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_FULLSCREEN;
    }

    if ((mFlags & FLAG_HIDE_NAVIGATION) != 0)
    {
      // If the client requested hiding navigation, add relevant flags.
      mShowFlags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
      mHideFlags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
      mTestFlags |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    }
  }

  /** {@inheritDoc} */
  @Override
  public void setup()
  {
    mAnchorView.setOnSystemUiVisibilityChangeListener(mSystemUiVisibilityChangeListener);
  }

  /** {@inheritDoc} */
  @Override
  public void hide()
  {
    mAnchorView.setSystemUiVisibility(mHideFlags);
  }

  /** {@inheritDoc} */
  @Override
  public void show()
  {
    mAnchorView.setSystemUiVisibility(mShowFlags);
  }

  /** {@inheritDoc} */
  @Override
  public boolean isVisible()
  {
    return mVisible;
  }

  private View.OnSystemUiVisibilityChangeListener mSystemUiVisibilityChangeListener = new View.OnSystemUiVisibilityChangeListener()
  {
    @Override
    public void onSystemUiVisibilityChange(int vis)
    {
      // Test against mTestFlags to see if the system UI is visible.
      if ((vis & mTestFlags) != 0)
      {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN)
        {
          // Pre-Jelly Bean, we must manually hide the action bar
          // and use the old window flags API.
          mActivity.getActionBar().hide();
          mActivity.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        }

        // Trigger the registered listener and cache the visibility
        // state.
        mOnVisibilityChangeListener.onVisibilityChange(false);
        mVisible = false;

      } else
      {
        mAnchorView.setSystemUiVisibility(mShowFlags);
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN)
        {
          // Pre-Jelly Bean, we must manually show the action bar
          // and use the old window flags API.
          mActivity.getActionBar().show();
          mActivity.getWindow().setFlags(0, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        }

        // Trigger the registered listener and cache the visibility
        // state.
        mOnVisibilityChangeListener.onVisibilityChange(true);
        mVisible = true;
      }
    }
  };
}

Java Source Code List