ViewPagerIndicator

//4classes used for viewpagerindicator with an xml

ViewPageBaseActivity
-----------------------
public class ViewPageBaseActivity extends FragmentActivity {
    ViewPageFragmentAdapter mAdapter;
    ViewPager mPager;
}


ViewPageActivity                     ------main activity
------------------

public class ViewPageActivity extends ViewPageBaseActivity {


    @Override
    protected void onCreate(Bundle arg0) {
        super.onCreate(arg0);
        setContentView(R.layout.view_page);
        mAdapter=new ViewPageFragmentAdapter(getSupportFragmentManager());

        mPager = (ViewPager)findViewById(R.id.pager);
        mPager.setAdapter(mAdapter);

        TitlePageIndicator indicator = (TitlePageIndicator)findViewById(R.id.indicator);
        indicator.setViewPager(mPager);
        indicator.setFooterIndicatorStyle(IndicatorStyle.Underline);
    }
}



ViewPageFragment
------------------
public class ViewPageFragment extends Fragment{

private static final String KEY_CONTENT = "TestFragment:Content";

    public static ViewPageFragment newInstance(String content) {
        ViewPageFragment fragment = new ViewPageFragment();

        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < 20; i++) {
            builder.append(content).append(" ");
        }
        builder.deleteCharAt(builder.length() - 1);
        fragment.mContent = builder.toString();

        return fragment;
    }

    private String mContent = "???";

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        if ((savedInstanceState != null) && savedInstanceState.containsKey(KEY_CONTENT)) {
            mContent = savedInstanceState.getString(KEY_CONTENT);
        }

        TextView text = new TextView(getActivity());
        text.setGravity(Gravity.CENTER);
        text.setText(mContent);
        text.setTextSize(20 * getResources().getDisplayMetrics().density);
        text.setPadding(20, 20, 20, 20);

        LinearLayout layout = new LinearLayout(getActivity());
        layout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
        layout.setGravity(Gravity.CENTER);
        layout.addView(text);

        return layout;
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putString(KEY_CONTENT, mContent);
    }
}



ViewPageFragmentAdapter
------------------------

public class ViewPageFragmentAdapter extends FragmentPagerAdapter {

    protected static final String[] CONTENT = new String[] { "NearBy", "Cities", "Custom", };

    private int mCount = CONTENT.length;
    public ViewPageFragmentAdapter(FragmentManager supportFragmentManager) {
        super(supportFragmentManager);
    }

    @Override
    public Fragment getItem(int position) {
        return ViewPageFragment.newInstance(CONTENT[position % CONTENT.length]);
    }

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

    public void setCount(int count) {
        if (count > 0 && count <= 10) {
            mCount = count;
            notifyDataSetChanged();
        }
    }

}



view_page.xml
--------------
<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <com.viewpagerindicator.TitlePageIndicator
        android:id="@+id/indicator"
        android:padding="10dip"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        />
    <android.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        />

</LinearLayout>