viewpagerindector

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ackage com.example.viewpageindicator;

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.support.v4.view.ViewPager.OnPageChangeListener;
import android.widget.Toast;

import com.viewpagerindicator.TabPageIndicator;

public class MainActivity extends FragmentActivity {
   /**
   * Tab标题
   */
   private static final String[] TITLE = new String[] { "头条", "房产", "另一面", "女人",
                                                       "财经", "数码", "情感", "科技" };

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);

       //ViewPager的adapter
       FragmentPagerAdapter adapter = new TabPageIndicatorAdapter(getSupportFragmentManager());
        ViewPager pager = (ViewPager)findViewById(R.id.pager);
        pager.setAdapter(adapter);

        //实例化TabPageIndicator然后设置ViewPager与之关联
        TabPageIndicator indicator = (TabPageIndicator)findViewById(R.id.indicator);
        //为他设置vp
        indicator.setViewPager(pager);
        //如果我们要对ViewPager设置监听，用indicator设置就行了
        indicator.setOnPageChangeListener(new OnPageChangeListener() {

           @Override
           public void onPageSelected(int arg0) {
               Toast.makeText(getApplicationContext(), TITLE[arg0], Toast.LENGTH_SHORT).show();
           }

           @Override
           public void onPageScrolled(int arg0, float arg1, int arg2) {

           }

           @Override
           public void onPageScrollStateChanged(int arg0) {

           }
       });

   }


   /**
   * ViewPager适配器
   * @author len
   *
   */
    class TabPageIndicatorAdapter extends FragmentPagerAdapter {
        public TabPageIndicatorAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
           //新建一个Fragment来展示ViewPager item的内容，并传递参数
           Fragment fragment = new ItemFragment();
            Bundle args = new Bundle();
            args.putString("arg", TITLE[position]);
            fragment.setArguments(args);

            return fragment;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return TITLE[position % TITLE.length];
        }

        @Override
        public int getCount() {
            return TITLE.length;
        }
    }

}

======================================================

package com.example.viewpageindicator;

import Android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class ItemFragment extends Fragment {

   @Override
   public View onCreateView(LayoutInflater inflater, ViewGroup Container,
           Bundle savedInstanceState) {

       View contextView = inflater.inflate(R.layout.fragment_item, container, false);
       TextView mTextView = (TextView) contextView.findViewById(R.id.textview);

       //获取Activity传递过来的参数
       Bundle mBundle = getArguments();
       String title = mBundle.getString("arg");

       mTextView.setText(title);

       return contextView;
   }

   @Override
   public void onActivityCreated(Bundle savedInstanceState) {
       super.onActivityCreated(savedInstanceState);
   }

}

=================================================================

mainactivity xml

=============================styles.xml====================

<resources xmlns:android="http://schemas.android.com/apk/res/android">

    
    <style name="AppBaseTheme" parent="android:Theme.Light">
        
    </style>

    
    <style name="AppTheme" parent="AppBaseTheme">
        
    </style>

    <style name="StyledIndicators" parent="@android:style/Theme.Light">
        <item name="vpiTabPageIndicatorStyle">@style/CustomTabPageIndicator</item>
    </style>

    <style name="CustomTabPageIndicator" parent="Widget.TabPageIndicator">
        <item name="android:background">@drawable/tab_indicator</item>
        <item name="android:textAppearance">@style/CustomTabPageIndicator.Text</item>
        <item name="android:textSize">14sp</item>
        <item name="android:dividerPadding">8dp</item>
        <item name="android:showDividers">middle</item>
        <item name="android:paddingLeft">10dp</item>
        <item name="android:paddingRight">10dp</item>
        <item name="android:fadingEdge">horizontal</item>
        <item name="android:fadingEdgeLength">8dp</item>
    </style>

    <style name="CustomTabPageIndicator.Text" parent="android:TextAppearance.Medium">
        <item name="android:typeface">monospace</item>
        <item name="android:textColor">@drawable/selector_tabtext</item>
    </style>

</resources>

==========================================================================

application 中需要变换的android:theme="@style/StyledIndicators"

dowable 文件

===========================selector.tabtext======

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true" android:color="#EE2C2C" />
    <item android:state_pressed="true" android:color="#EE2C2C" />
    <item android:state_focused="true" android:color="#EE2C2C" />
    <item android:color="@android:color/black"/>
</selector>

=======================tab_indicator.xml=================================

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