title: how to do an event when i swipe from fragment to the other
body: <p>this is my code about swipe between 6 fragments ,, i want to do an event when i swipe from one fragment to the other as loading some thing from internet ,, so please any help how can i do this ???,, and where can i put the code ,, i think about the progress dialog start it at function get title and cancel it at the beginning of  the fragment is it applicable??
   this is my code :</p>
  
  <pre><code>             package com.example.my_finalswipe;
                   import java.util.List;
                   import java.util.Locale;
              import java.util.Vector;
              import android.os.Bundle;
              import android.support.v4.app.Fragment;
              import android.support.v4.app.FragmentActivity;
              import android.support.v4.app.FragmentManager;
              import android.support.v4.app.FragmentPagerAdapter;
              import android.support.v4.view.ViewPager;
              import android.view.LayoutInflater;
              import android.view.View;
              import android.view.ViewGroup;
  
               public class MainActivity extends FragmentActivity {
  
  
              SectionsPagerAdapter mSectionsPagerAdapter;
  
  
              ViewPager mViewPager;
              List&lt;Fragment&gt; fragments ;
  
              @Override
              protected void onCreate(Bundle savedInstanceState) {
                  super.onCreate(savedInstanceState);
                  setContentView(R.layout.activity_main);
  
                  // Create the adapter that will return a fragment for each of the three
                  // primary sections of the app.
                 fragments = new Vector&lt;Fragment&gt;();
  
                          fragments.add(Fragment.instantiate(this, FragmentOne.class.getName()));
                          fragments.add(Fragment.instantiate(this, FragmentTwo.class.getName()));
                          fragments.add(Fragment.instantiate(this, FragmentThree.class.getName()));
                          fragments.add(Fragment.instantiate(this, FragmentFour.class.getName()));
                          fragments.add(Fragment.instantiate(this, FragmentFive.class.getName()));
                          fragments.add(Fragment.instantiate(this, FragmentSix.class.getName()));
  
              mSectionsPagerAdapter=new SectionsPagerAdapter(super.getSupportFragmentManager());
  
                  // Set up the ViewPager with the sections adapter.
                  mViewPager = (ViewPager) findViewById(R.id.pager);
                  mViewPager.setAdapter(mSectionsPagerAdapter);
  
              //
  
  
  
  
  
              }
  
  
  
  
  
              public class SectionsPagerAdapter extends FragmentPagerAdapter {
  
                  public SectionsPagerAdapter(FragmentManager fm) {
  
                      super(fm);
                  }
  
                          @Override
                          public Fragment getItem(int position) {
                               int _pos = position % 6;
                               return fragments.get(_pos);
  
                          }
  
                  @Override
                  public int getCount() {
                      // Show 3 total pages.
                      return 6;
                  }
  
                  @Override
                  public CharSequence getPageTitle(int position) {
                      final String title_section4="Section4";
                      final String title_section5="Section5";
                      final String title_section6="Section6";
                      final String title_section1="Section1";
                      final String title_section2="Section2";
                      final String title_section3="Section3";
  
                      Locale l = Locale.getDefault();
                      switch (position) {
  
  
                      case 0:
                          return title_section1.toUpperCase(l);
  
                      case 1:
                          return title_section2.toUpperCase(l);
  
                      case 2:
                          return title_section3.toUpperCase(l);
  
                      case 3:
                          return title_section4.toUpperCase(l);
                      case 4:
                          return title_section5.toUpperCase(l);
                      case 5:
                          return title_section6.toUpperCase(l);
  
                      }
                      return null;
                  }
              }
  
  
              public static class FragmentOne extends Fragment {
  
                  public static final String ARG_SECTION_NUMBER = "section_number";
  
                  public FragmentOne() {
                  }
  
                  @Override
                  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
                      View rootView = inflater.inflate(R.layout.one, container, false);
  
                      return rootView;
                  }
              }
  
  
              public static class FragmentTwo extends Fragment {
  
                  public static final String ARG_SECTION_NUMBER = "section_number";
  
                  public FragmentTwo() {
                  }
  
                  @Override
                  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
                      View rootView = inflater.inflate(R.layout.two, container, false);
  
                      return rootView;
                  }
              }
  
  
              public static class FragmentThree extends Fragment {
                  public static final String ARG_SECTION_NUMBER = "section_number";
  
                  public FragmentThree() {
                  }
  
                  @Override
                  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
                      View rootView = inflater.inflate(R.layout.three, container, false);
  
                      return rootView;
                  }
              }
  
  
  
              public static class FragmentFour extends Fragment {
  
                  public static final String ARG_SECTION_NUMBER = "section_number";
  
                  public FragmentFour() {
                  }
  
                  @Override
                  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
                      View rootView = inflater.inflate(R.layout.four, container, false);
                      return rootView;
                  }
              }
  
  
  
              public static class FragmentFive extends Fragment {
  
                  public static final String ARG_SECTION_NUMBER = "section_number";
  
                  public FragmentFive() {
                  }
  
                  @Override
                  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
                      View rootView = inflater.inflate(R.layout.five, container, false);
                     return rootView;
                  }
              }
  
  
              public static class FragmentSix extends Fragment {
  
                  public static final String ARG_SECTION_NUMBER = "section_number";
  
                  public FragmentSix() {
                  }
  
                  @Override
                  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
                      View rootView = inflater.inflate(R.layout.six, container, false);
                    return rootView;
                  }
              }
               }
  </code></pre>