In this post we are going to learn about how to integrate the android tab view with the fragments using ViewPager and ActionBar class. For displaying the tabs on the top of the screen you need to interact with the android action bar, this is because the tab views is connected with the action bar.
Ads by Google
In this example application we make three tabs called "java", "php" and ".Net" and there are three seperate fragement view for each of these tabs.
First you need to add the ViewPager into the activity_main.xml file.
Now create three layout files for the fragments.
1. java_layout.xml
2. php_layout.xml
3. dotnet_layout.xml
Now we need to inflate each of these layouts using the inflate() method.
1. JavaFragment.java
2. PhpFragment.java
3. DotNetFragment.java
Now create an adapter class that extends FragmentPagerAdapter and define override method getItem. The getItem() method will return an object of fragment.
FragmentPageAdapter.java
MainActivity.java
Ads by Google
In this example application we make three tabs called "java", "php" and ".Net" and there are three seperate fragement view for each of these tabs.
First you need to add the ViewPager into the activity_main.xml file.
<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
</android.support.v4.view.ViewPager> Now create three layout files for the fragments.
1. java_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#D881DA"
>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="58dp"
android:text="Welcome to java page"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
2. php_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0B9AE2"
>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="97dp"
android:text="Welcome to php page"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
3. dotnet_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#E2D40B"
>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="42dp"
android:text="Welcome to .Net page"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
Now we need to inflate each of these layouts using the inflate() method.
1. JavaFragment.java
package com.tabdemo;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class JavaFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
return inflater.inflate(R.layout.java_layout, container,false);
}
}
2. PhpFragment.java
package com.tabdemo;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class PhpFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
return inflater.inflate(R.layout.php_layout, container,false);
}
}
3. DotNetFragment.java
package com.tabdemo;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class DotnetFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
return inflater.inflate(R.layout.dotnet_layout, container,false);
}
}
Now create an adapter class that extends FragmentPagerAdapter and define override method getItem. The getItem() method will return an object of fragment.
FragmentPageAdapter.java
package com.tabdemo;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
public class FragmentPageAdapter extends FragmentPagerAdapter {
public FragmentPageAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int arg0) {
// TODO Auto-generated method stub
switch (arg0) {
case 0:
return new JavaFragment();
case 1:
return new PhpFragment();
case 2:
return new DotnetFragment();
default:
break;
}
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 3;
}
}
MainActivity.java
package com.tabdemo;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
public class MainActivity extends FragmentActivity implements ActionBar.TabListener{
ActionBar actionbar;
ViewPager viewpager;
FragmentPageAdapter ft;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewpager = (ViewPager) findViewById(R.id.pager);
ft = new FragmentPageAdapter(getSupportFragmentManager());
actionbar = getActionBar();
viewpager.setAdapter(ft);
actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionbar.addTab(actionbar.newTab().setText("Java").setTabListener(this));
actionbar.addTab(actionbar.newTab().setText("Php").setTabListener(this));
actionbar.addTab(actionbar.newTab().setText(".Net").setTabListener(this));
viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
actionbar.setSelectedNavigationItem(arg0);
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
viewpager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
}
