Android Open Source - AndroidTabsSample A T S Fragment Adapter

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License

The source code is released under:

Apache License

Java Source Code

package com.silverhillapps.adapter;
/*  w ww .  j av  a2s  .  com*/
import java.util.HashMap;

import com.silverhillapps.fragments.ATSListFragmentTimeline;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

/**
 * This is the section adapter that rules the tab management in the application.
 * @author SalvaAguilar
 *
 */
public class ATSFragmentAdapter extends FragmentPagerAdapter {

  private HashMap<Integer, Fragment> mElements;
  private HashMap<Integer, String> mTitles;

  public ATSFragmentAdapter(FragmentManager fm) {
    super(fm);
    
    mElements = new HashMap<Integer,Fragment>();
    mTitles = new HashMap<Integer, String>();
  }

  public Fragment getFragment(int pos){
    Fragment f = null;
    if(mElements != null){
      if(mElements.containsKey(pos)){
        f = mElements.get(pos);
      }
    }
    return f;
  }

  @Override
  public Fragment getItem(int position) {

    if(!mElements.containsKey(position)){
      addNewElement(position, "new " + getCount());
    }
     return mElements.get(position);
  }


  @Override
  public int getCount() {
    
    return mElements.size();
    
  }

  @Override
  public CharSequence getPageTitle(int position) {
    
    return mTitles.get(position);  
  }

  
  // Methods for creation and deletion
  
  private void addNewElement(int position, String text){
    Fragment fragment = ATSListFragmentTimeline.newInstance(position, text);
    mElements.put(position, fragment);
  }
  
  private void addNewElementTitle(int position, String text){
    mTitles.put(position, text);
  }
  
  public void addNewTab(String text){
    int pos = getCount();
    addNewElement(pos, text);
    addNewElementTitle(pos, text);
  }
  
  public void delLastTab(){
    int pos = getCount()-1;
    if(pos>0){
      delElement(pos);
      delElementTitle(pos);
    }
  }
  
  private void delElement(int position){
    mElements.remove(position);
  }
  
  private void delElementTitle(int position){
    mTitles.remove(position);
  }

}

Java Source Code List

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