ViewPager + Fragment+radiogroup实现滑动标签页

效果图radiobutton的样式需要修改一下，等我研究过后更新代码。radiobutton效果参照这篇文章http://blog.csdn.net/tiramisu_ljh/article/details/50462072MainActivity.java

package com.example.demo.myapplication;

import android.os.Bundle;

import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener,
ViewPager.OnPageChangeListener {

//UI Objects
private TextView txt_topbar;
private RadioGroup  rg_tab_bar;
private RadioButton rb_channel;
private RadioButton rb_message;
private RadioButton rb_better;
private RadioButton rb_setting;
private ViewPager vpager;

private MyFragmentPagerAdapter mAdapter;

//几个代表页面的常量
public static final int PAGE_ONE = 0;
public static final int PAGE_TWO = 1;
public static final int PAGE_THREE = 2;
public static final int PAGE_FOUR = 3;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);<pre name="code" class="java"><pre style="background-color:#ffffff;color:#000000;font-family:'Liberation Mono';font-size:10.5pt;"><span style="color:#010101;"></span><pre name="code" class="java">

bindViews();
rb_channel.setChecked(true);

} private void bindViews() {

</pre><pre name="code" class="java">        rg_tab_bar = (RadioGroup) findViewById(R.id.rg_tab_bar);
rb_channel = (RadioButton) findViewById(R.id.rb_channel);
rb_message = (RadioButton) findViewById(R.id.rb_message);
rb_better = (RadioButton) findViewById(R.id.rb_better);
rb_setting = (RadioButton) findViewById(R.id.rb_setting);
rg_tab_bar.setOnCheckedChangeListener(this);

//构造适配器
List<Fragment> fragments=new ArrayList<Fragment>();
fragments.add(new MyFragment1());
fragments.add(new MyFragment2());
fragments.add(new MyFragment3());
fragments.add(new FragmentMine());
mAdapter = new MyFragmentPagerAdapter(getSupportFragmentManager(),fragments);
//设定适配器
vpager = (ViewPager) findViewById(R.id.vpager);
vpager.setAdapter(mAdapter);
vpager.setCurrentItem(0);
vpager.addOnPageChangeListener(this);

} @Override public void onCheckedChanged(RadioGroup group, int checkedId) { switch (checkedId) { case R.id.rb_channel: vpager.setCurrentItem(PAGE_ONE); break; case R.id.rb_message: vpager.setCurrentItem(PAGE_TWO); break; case R.id.rb_better: vpager.setCurrentItem(PAGE_THREE);break; case R.id.rb_setting: vpager.setCurrentItem(PAGE_FOUR); break; } } //重写ViewPager页面切换的处理方法 @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { } @Overridepublic void onPageScrollStateChanged(int state) { //state的状态有三个，0表示什么都没做，1正在滑动，2滑动完毕 if (state == 2) { switch (vpager.getCurrentItem()) { case PAGE_ONE: rb_channel.setChecked(true); break; case PAGE_TWO: rb_message.setChecked(true); break; case PAGE_THREE:rb_better.setChecked(true); break; case PAGE_FOUR: rb_setting.setChecked(true); break; } } }}

MyFragment1.java

package com.example.demo.myapplication;

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 MyFragment1 extends Fragment {
public MyFragment1(){

}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fg_content, container, false);
TextView content = (TextView) view.findViewById(R.id.content);
content.setText("第一个Fragment");
return view;
}
}

MyFragmentPagerAdapter.java

<pre name="code" class="java">package com.example.demo.myapplication.adapter;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;import android.view.ViewGroup;import java.util.List;/*** Created by liyiche on 1/8/2016.*/public class MyFragmentPagerAdapter extends FragmentPagerAdapter {private List<Fragment> mFragments;public MyFragmentPagerAdapter(FragmentManager fm, List<Fragment> fragments) {super(fm);mFragments=fragments;}@Overridepublic Object instantiateItem(ViewGroup vg, int position) {return super.instantiateItem(vg, position);}@Overridepublic void destroyItem(ViewGroup container, int position, Object object) {super.destroyItem(container, position, object);}@Overridepublic Fragment getItem(int position) {return mFragments.get(position);}@Overridepublic int getCount() {return mFragments.size();}}

布局文件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"tools:context=".MainActivity"><RelativeLayoutandroid:id="@+id/ly_top_bar"android:layout_width="match_parent"android:layout_height="48dp"><TextViewandroid:id="@+id/txt_topbar"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_centerInParent="true"android:gravity="center"android:text="乐蜂网"android:textSize="18sp" /><Viewandroid:layout_width="match_parent"android:layout_height="2dp"android:background="#000000"android:layout_alignParentBottom="true" /></RelativeLayout><RadioGroupandroid:id="@+id/rg_tab_bar"android:layout_width="match_parent"android:layout_height="56dp"android:layout_alignParentBottom="true"android:orientation="horizontal"><RadioButtonandroid:layout_height="wrap_content"android:layout_width="0dp"android:layout_weight="1"android:id="@+id/rb_channel"android:text="特卖" /><RadioButtonandroid:layout_height="wrap_content"android:layout_width="0dp"android:layout_weight="1"android:id="@+id/rb_message"android:text="商城" /><RadioButtonandroid:layout_height="wrap_content"android:layout_width="0dp"android:layout_weight="1"android:id="@+id/rb_better"android:text="购物车" /><RadioButtonandroid:layout_height="wrap_content"android:layout_width="0dp"android:layout_weight="1"android:id="@+id/rb_setting"android:text="我的蜂巢" /></RadioGroup><Viewandroid:id="@+id/div_tab_bar"android:layout_width="match_parent"android:layout_height="2px"android:layout_above="@id/rg_tab_bar"android:background="@color/colorPrimary" /><android.support.v4.view.ViewPagerandroid:id="@+id/vpager"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_above="@id/div_tab_bar"android:layout_below="@id/ly_top_bar" /></RelativeLayout>

fg_content.xml

<?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="match_parent"android:background="#FFFFFF"android:orientation="vertical"><TextViewandroid:id="@+id/content"android:layout_width="match_parent"android:layout_height="match_parent"android:gravity="center"android:text="呵呵"android:textSize="20sp" /></LinearLayout>