Android Open Source - retrowatch Retro Watch Fragment Adapter

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License

The source code is released under:
Apache License
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Java Source Code

/*
 * Copyright (C) 2014 The Retro Watch - Open source smart watch project
 */* w  w  w .  j  av a  2s  . c o  m*/
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hardcopy.retrowatch;

import java.util.Locale;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
 * one of the sections/tabs/pages.
 */
public class RetroWatchFragmentAdapter extends FragmentPagerAdapter {

  public static final String TAG = "RetroWatchFragmentAdapter";
  
  // Total count
  public static final int FRAGMENT_COUNT = 4;
  
    // Fragment position
    public static final int FRAGMENT_POS_MESSAGE_LIST = 0;
    public static final int FRAGMENT_POS_FILTERS = 1;
    public static final int FRAGMENT_POS_RSS = 2;
    public static final int FRAGMENT_POS_WATCH_CONTROL = 3;
    
  public static final String ARG_SECTION_NUMBER = "section_number";
    
    // System
    private Context mContext = null;
    private IFragmentListener mFragmentListener = null;
    
    private Fragment mMessageListFragment = null;
    private Fragment mFiltersFragment = null;
    private Fragment mRssFragment = null;
    private Fragment mWatchControlFragment = null;
  
  public RetroWatchFragmentAdapter(FragmentManager fm, Context c, IFragmentListener l) {
    super(fm);
    mContext = c;
    mFragmentListener = l;
  }

  @Override
  public Fragment getItem(int position) {
    // getItem is called to instantiate the fragment for the given page.
    Fragment fragment;
    boolean needToSetArguments = false;
    
    if(position == FRAGMENT_POS_MESSAGE_LIST) {
      if(mMessageListFragment == null) {
        mMessageListFragment = new MessageListFragment(mContext, mFragmentListener);
        needToSetArguments = true;
      }
      fragment = mMessageListFragment;
      
    } else if(position == FRAGMENT_POS_FILTERS) {
      if(mFiltersFragment == null) {
        mFiltersFragment = new FiltersFragment(mContext, mFragmentListener);
        needToSetArguments = true;
      }
      fragment = mFiltersFragment;
      
    } else if(position == FRAGMENT_POS_RSS) {
      if(mRssFragment == null) {
        mRssFragment = new RssFragment(mContext, mFragmentListener);
        needToSetArguments = true;
      }
      fragment = mRssFragment;
      
    } else if(position == FRAGMENT_POS_WATCH_CONTROL) {
      if(mWatchControlFragment == null) {
        mWatchControlFragment = new WatchControlFragment(mContext, mFragmentListener);
        needToSetArguments = true;
      }
      fragment = mWatchControlFragment;
      
    } else {
      fragment = null;
    }
    
    // TODO: If you have something to notify to the fragment.
    if(needToSetArguments) {
      Bundle args = new Bundle();
      args.putInt(ARG_SECTION_NUMBER, position + 1);
      fragment.setArguments(args);
    }
    
    return fragment;
  }

  @Override
  public int getCount() {
    return FRAGMENT_COUNT;
  }

  @Override
  public CharSequence getPageTitle(int position) {
    Locale l = Locale.getDefault();
    switch (position) {
    case FRAGMENT_POS_MESSAGE_LIST:
      return mContext.getString(R.string.title_messagelist).toUpperCase(l);
    case FRAGMENT_POS_FILTERS:
      return mContext.getString(R.string.title_filters).toUpperCase(l);
    case FRAGMENT_POS_RSS:
      return mContext.getString(R.string.title_rss).toUpperCase(l);
    case FRAGMENT_POS_WATCH_CONTROL:
      return mContext.getString(R.string.title_watchcontrol).toUpperCase(l);
    }
    return null;
  }
  
}
Java Source Code List
