Android Open Source - PlayTunes Navigation Drawer Fragment

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License

The source code is released under:
Copyright (c) 2014, Impeccable Labs, LLC. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions ar...
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Java Source Code

package com.ideabag.playtunes.fragment;
/*w w  w. j ava2 s  . c o  m*/
import com.ideabag.playtunes.R;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.view.KeyEvent;
import android.view.MenuItem;
import android.view.View;

public class NavigationDrawerFragment extends NavigationFragment {
  
  public ActionBarDrawerToggle mDrawerToggle;
  protected DrawerLayout mDrawerLayout;
  
  public void onActivityCreated( Bundle savedInstanceState ) {
    super.onActivityCreated(savedInstanceState);
    
    // 
    // Set up navigation drawer ( if we have one )
    // 
    View mDrawerViewContainer = getActivity().findViewById( R.id.drawer_layout );
    //View mDrawerView = ViewHash.get( Integer.valueOf( R.id.drawer_layout ) ).get();
    /*if ( null !=  ) {
      
      View v = ViewHash.get( Integer.valueOf( R.id.NavigationPlaylistsAll ) ).get();
      if ( null != v ) {
        
        v.setOnClickListener( NavigationClickListener );
        
      }
      //getView().findViewById( R.id.NavigationToolbarFeedback ).setOnClickListener( NavigationClickListener );
      
    }*/
    
    android.util.Log.i( TAG, "is null? " + ( null == mDrawerViewContainer ) );
    
    if ( null != mDrawerViewContainer ) {
            
          mDrawerLayout = ( DrawerLayout ) mDrawerViewContainer;
            
        mDrawerLayout.setDrawerShadow( R.drawable.drawer_shadow, GravityCompat.START );
            
            mDrawerToggle = new ActionBarDrawerToggle(
                mActivity,
                mDrawerLayout,
                    R.drawable.ic_drawer,
                    R.string.drawer_open ) {
              
              float mPreviousOffset = 0f;
              
              
                public void onDrawerClosed( View drawerView ) {
                  super.onDrawerClosed( drawerView );
                  
                  configureActionBarDrawerClosed();
                  
                }
                
                public void onDrawerOpened( View drawerView ) {
                    super.onDrawerOpened( drawerView );
                    
                    configureActionBarDrawerOpen();
                  
               }
                
                public void onDrawerSlide( View drawerView, float slideOffset ) {
                  super.onDrawerSlide( drawerView, slideOffset);
                  
                  if ( slideOffset > mPreviousOffset ) {
                      
                    configureActionBarDrawerOpen();
                      
                   } else if ( mPreviousOffset > slideOffset && slideOffset < 0.5f ) {
                     
                     configureActionBarDrawerClosed();
                     
                   }
                    
                   mPreviousOffset = slideOffset;
                   
                }
                
            };
            
            
            mDrawerLayout.setDrawerListener( mDrawerToggle );
            
          }
    
    SharedPreferences prefs = mActivity.getSharedPreferences( getString( R.string.prefs_file) , Context.MODE_PRIVATE );
        //SharedPreferences.Editor edit = prefs.edit();
      
      int openCount = prefs.getInt( getString( R.string.pref_key_appopen ), 0 );
      
      if ( openCount == 0 ) {
        
        showNavigation();
        
      }
    
  }
  
    
    private void configureActionBarDrawerOpen() {
      
      //mActivity.mShouldHideActionItems = true;
      
    //mActivity.setActionbarTitle( (String) mActionBar.getTitle() );
    //mActivity.setActionbarSubtitle( (String) mActionBar.getSubtitle() );
      
    mActionBar.setTitle( getString( R.string.app_name ) );
      mActionBar.setSubtitle( null );
      
      mActionBar.setDisplayShowCustomEnabled( false );
      mActionBar.setDisplayShowHomeEnabled( true );
      //mActionBar.setDisplayUseLogoEnabled( false );
      //mActionBar.setDisplayShowHomeEnabled( true );
      mActivity.supportInvalidateOptionsMenu();
      
    }
    
    private void configureActionBarDrawerClosed() {
      
      //mActivity.mShouldHideActionItems = false;
      
      if ( mActionbarTitle != null && mActionbarTitle.equals( "*" ) ) {
        
        mActionBar.setDisplayShowHomeEnabled( true );
        mActionBar.setTitle( null );
        
      } else {
        
        //mActionBar.setDisplayShowHomeEnabled( false );
        mActionBar.setTitle( mActionbarTitle );
        
      }
      mActionBar.setSubtitle( mActionbarSubtitle );
      
      mActivity.getSupportActionBar().setDisplayShowCustomEnabled( true );
      //mActionBar.setDisplayUseLogoEnabled( true );
      
      mActivity.supportInvalidateOptionsMenu();
      
    }
  
  @Override public void onResume() {
    super.onResume();
    
    if ( mDrawerLayout != null ) {
      
      if ( mDrawerLayout.isDrawerOpen( GravityCompat.START ) ) {
          
        configureActionBarDrawerClosed();
        
      } else {
        
        configureActionBarDrawerOpen();
        
      }
      
    }
    
  }
  
  
  public void showNavigation() {
    
    if ( mDrawerLayout != null && !mDrawerLayout.isDrawerOpen( GravityCompat.START ) ) {
      
      configureActionBarDrawerOpen();
      
      mDrawerLayout.openDrawer( GravityCompat.START );
      //customActionBarToggle.showOpen();
      //mActionbarTitle = mActivity.getSupportActionBar().getTitle();
      //mActivity.getSupportActionBar().setTitle( getString( R.string.app_name ) );
      //getSupportActionBar().setDisplayUseLogoEnabled( false );
      //getSupportActionBar().setIcon( getResources().getDrawable( R.drawable.ic_launcher ) );
      
    }
    
  }
  
  public void hideNavigation() {
    
    if ( mDrawerLayout != null && mDrawerLayout.isDrawerOpen( GravityCompat.START ) ) {
        
      configureActionBarDrawerClosed();
      
        mDrawerLayout.closeDrawer( GravityCompat.START );
        
      }
    
  }
  
  public void toggleNavigation() {
    
      if ( mDrawerLayout != null ) {
        
        if ( mDrawerLayout.isDrawerOpen( GravityCompat.START ) ) {
          
          hideNavigation();
          
        } else {
          
          showNavigation();
          
        }
        
      }
    
  }
  
  public void setActionbarTitle( String titleString ) {
    
    mActionbarTitle = ( CharSequence ) titleString;
    
    // Set the ActionBar title if the drawer is closed, otherwise just hold onto it for later
    if ( null != mDrawerLayout && !mDrawerLayout.isDrawerOpen( GravityCompat.START ) ) {
      
      if ( null != titleString && !titleString.equals( "*" ) ) {
        
        mActionBar.setTitle( mActionbarTitle );
        
      }
      
    }
    
  }
  
  public void setActionbarSubtitle( String subtitleString ) {
    
    mActionbarSubtitle = ( CharSequence ) subtitleString;
    
    // Set the ActionBar title if the drawer is closed, otherwise just hold onto it for later
    if ( null != mDrawerLayout && !mDrawerLayout.isDrawerOpen( GravityCompat.START ) ) {
      
      mActionBar.setSubtitle( mActionbarSubtitle );
      
    }
    
  }
  
  @Override public boolean onKeyDown( int keycode, KeyEvent e ) {
    
    switch ( keycode ) {
        
        case KeyEvent.KEYCODE_MENU:
          
          toggleNavigation();
            return true;
            
        case KeyEvent.KEYCODE_SEARCH:
          
          showSearch();
          return true;
        
        case KeyEvent.KEYCODE_BACK:
          
          if ( mDrawerLayout != null && mDrawerLayout.isDrawerOpen( GravityCompat.START ) ) {
            
            hideNavigation();
            
            return true;
            
          }
          
          break;
    }
      
    
    return super.onKeyDown( keycode, e );
    
  }
  
    @Override public boolean onOptionsItemSelected( MenuItem item ) {
    
        // Pass the event to ActionBarDrawerToggle, if it returns
        // true, then it has handled the app icon touch event
      if ( null != mDrawerToggle && mDrawerToggle.onOptionsItemSelected( item ) ) {
        
        return true;
        
      }
      /*
      // Search button!
        if ( item.getItemId() == R.id.MenuSearch ) {
          
          SearchFragment mSearchFragment = new SearchFragment();
          
          transactFragment( mSearchFragment );
          
        hideNavigation();
        
        return true;
          
        }
      */
      return false;
      
    }
  
  @Override protected void load( int id ) {
    super.load( id );
    
    hideNavigation();
    
  }
  
}
Java Source Code List
