Flexible use of Android Actionbar and Viewpager switching pages _android

This article is an example of Android using Actionbar and Viewpager to switch pages and share them for everyone's reference. Specifically as follows:
The screenshot of the running effect is as follows:

The project layout is as follows:

The specific code is as follows:

Mainactivity.java Code

Import java.util.ArrayList;
Import java.util.List;
Import Android.os.Bundle;
Import android.support.v4.app.Fragment;
Import Android.support.v4.app.FragmentManager;
Import Android.support.v4.app.FragmentPagerAdapter;
Import android.support.v4.app.FragmentTransaction;
Import Android.support.v4.view.ViewPager;
Import Android.support.v4.view.ViewPager.OnPageChangeListener;
Import Android.support.v7.app.ActionBar;
Import Android.support.v7.app.ActionBar.Tab;
Import Android.support.v7.app.ActionBar.TabListener;

Import android.support.v7.app.ActionBarActivity;
Import com.xuliugen.fragment.ChatFragment;
Import com.xuliugen.fragment.FriendFragment;
Import com.xuliugen.fragment.MomentFragment;

Import com.xuliugen.fragment.MoreFragment; public class Mainactivity extends Actionbaractivity implements Tablistener,onpagechangelistener {private List<mytab
  > tabslist = new arraylist<mainactivity.mytab> (4); Private Viewpager viewpager;//Viewpager for storing fragment private Actionbar ACTIOnBar;
    @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);

    Setcontentview (R.layout.activity_main);
    Add 4 fragment to the Custom tab to Tabslist.add (New Mytab ("chat", Chatfragment.class));
    Tabslist.add (New Mytab ("friend", Friendfragment.class));
    Tabslist.add (New Mytab ("moment", Momentfragment.class));

    Tabslist.add (New Mytab ("more", Morefragment.class));

  Initactionbar ();
    private void Initactionbar () {//find Viewpager Viewpager = (viewpager) This.findviewbyid (R.id.viewpager); Actionbar = Getsupportactionbar (); Get the Actionbar Actionbar.setnavigationmode (actionbar.navigation_mode_tabs) in V7;//set to navigation mode//To add the four tab created by looping to AC
      Tionbar for (Mytab tab:tabslist) {tab t = Actionbar.newtab ();//Use Tab V7 below T.settext (Tab.gettext ());
    T.settablistener (this);//Set Tablistener listener Actionbar.addtab (t); } viewpager.setadapter (New Tabfragmentpageradapter (getsupportfragmentmanageR ()));
  Viewpager.setonpagechangelistener (this); 
    }/** * Encapsulates a tab class * * TAB's TEXT * * tab contains class/class Mytab {private String text;//Caption text
    Private Class fragment;//the page corresponding to each tab fragment public String GetText () {return text;
    public void SetText (String text) {this.text = text;
    Public Class getfragment () {return fragment;
    The public void Setfragment (Class fragment) {this.fragment = fragment; /** * Two parameters are constructed to facilitate the creation of an object * * @param string * @param fragment/Public Mytab (string s
      Tring, Class fragment) {this.text = string;
    This.fragment = fragment; }/** * Set adapter for Viewpager/class Tabfragmentpageradapter extends Fragmentpageradapter {public tabfr
    Agmentpageradapter (Fragmentmanager FM) {super (FM); @Override public Fragment getitem (int i) {try {return (Fragment) Tabslist.get (i). Getfragment (). newinstance ();
      catch (Instantiationexception e) {e.printstacktrace ();
      catch (Illegalaccessexception e) {e.printstacktrace ();
    return null;
    @Override public int GetCount () {return tabslist.size (); }/************* below is the method implemented by Tablistener ***********************//** * When tab is checked twice/@Override public VO ID ontabreselected (Tab tab, Fragmenttransaction fragmenttransaction) {}/** * when Tab is selected * * * @Override Publ IC Void ontabselected (Tab tab, Fragmenttransaction fragmenttransaction) {Viewpager.setcurrentitem (Tab.getPosition ())
  ;  @Override public void ontabunselected (Tab tab, Fragmenttransaction fragmenttransaction) {}/**************** Below is the method implemented by Onpagechangelistener ****************/@Override public void onpagescrollstatechanged (int i) {} @Overri De public void onpagescrolled (int i, float arg1, int arg2) {} @Override public void Onpageselected (int i) {Actionbar.selecttab (Actionbar.gettabat (i));
 }

}

The bottom is four fragment.

public class Chatfragment extends Fragment {@Override public View oncreateview (Layoutinflater inflater, ViewGroup C
  Ontainer, Bundle savedinstancestate) {return inflater.inflate (R.layout.fragment_friends, container, false); } public class Friendfragment extends Fragment {@Override public View oncreateview (Layoutinflater inflater, VIEWG
  Roup container, Bundle savedinstancestate) {return inflater.inflate (R.layout.fragment_chat, container, false); } public class Momentfragment extends Fragment {@Override public View oncreateview (Layoutinflater inflater, Vie Wgroup container, Bundle savedinstancestate) {return inflater.inflate (r.layout.fragment_moment, container, Fals
  e); } public class Morefragment extends Fragment {@Override public View oncreateview (Layoutinflater inflater, Viewgro
  Up container, Bundle savedinstancestate) {return inflater.inflate (R.layout.fragment_more, container, false);

 }
}

Activity_main.xml

<relativelayout xmlns:android= "http://schemas.android.com/apk/res/android"
  xmlns:tools= "http:// Schemas.android.com/tools "
  android:layout_width=" match_parent "
  android:layout_height=" Match_parent "
  android:paddingbottom= "@dimen/activity_vertical_margin"
  android:paddingleft= "@dimen/activity_ Horizontal_margin "
  android:paddingright=" @dimen/activity_horizontal_margin "
  android:paddingtop=" @dimen /activity_vertical_margin "
  tools:context=". Mainactivity ">

  <android.support.v4.view.viewpager
    android:id=" @+id/viewpager "
    android: Layout_width= "Fill_parent"
    android:layout_height= "fill_parent" >
  </ Android.support.v4.view.viewpager>

</RelativeLayout>

Below are four fragment layout files

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=
"http://schemas.android.com/apk/" Res/android "
  android:layout_width=" match_parent "
  android:layout_height=" fill_parent "
  android:o" rientation= "vertical" >

  <textview
    android:id= "@+id/textview" android:layout_width= "WRAP_"
    Content "
    android:layout_height=" wrap_content "
    android:layout_gravity=" Center_horizontal "
    android: text= "Chat" >
  </TextView>

</LinearLayout>

The other three are just the same as the filename and the contents of the inside change.

I hope this article will help you learn about Android software programming.