ViewPager+RadioGroup+Fragment实现选项卡

<LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v4.view.ViewPager
android:id="@+id/content_viewpager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#efefef"/>
<RadioGroup
android:id="@+id/content_radiogroup"
android:layout_width="match_parent"
android:layout_height="42dp"
android:background="@color/white"
android:paddingTop="3dp"
android:paddingBottom="3dp"
android:gravity="center"
android:orientation="horizontal">
<RadioButton
android:id="@+id/rb_shouye"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#00000000"
android:button="@null"                android:drawableTop="@drawable/content_xinwen_selector"
android:ellipsize="marquee"
android:gravity="center"
android:paddingTop="0dp"
android:singleLine="true"
android:text="首页"
android:textSize="10sp"                android:textColor="@drawable/content_textcolor"/>
<RadioButton
android:id="@+id/rb_insurance"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#00000000"
android:button="@null"                android:drawableTop="@drawable/content_redian_selector"
android:ellipsize="marquee"
android:gravity="center"
android:paddingTop="0dp"
android:singleLine="true"
android:text="保险"
android:textSize="10sp"                android:textColor="@drawable/content_textcolor" />
<RadioButton
android:id="@+id/rb_mine"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#00000000"
android:button="@null"                android:drawableTop="@drawable/content_yuedu_selector"
android:ellipsize="marquee"
android:gravity="center"
android:paddingTop="0dp"
android:singleLine="true"
android:text="我的"
android:textSize="10sp"                android:textColor="@drawable/content_textcolor" />
</RadioGroup>
</LinearLayout>
</LinearLayout>

package com.pingan.baoxian.viewpagertest;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.widget.RadioGroup;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends FragmentActivity {
private List<Fragment> fragments=null;
private ViewPager viewPager;
private RadioGroup radioGroup;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initDate();
initView();
}
private void initDate(){
fragments=new ArrayList<Fragment>();
fragments.add(new FirstFragment());
fragments.add(new SecondFragment());
fragments.add(new ThirdFragment());
}
private void initView(){
if(fragments==null){
return;
}
viewPager=(ViewPager)findViewById(R.id.content_viewpager);
radioGroup=(RadioGroup)findViewById(R.id.content_radiogroup);
viewPager.setOffscreenPageLimit(2);
viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
@Override
public Fragment getItem(int position) {
return fragments.get(position);
}

@Override
public int getCount() {
return fragments.size();
}
});
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (i){
case R.id.rb_shouye:
viewPager.setCurrentItem(0,false);
break;
case R.id.rb_insurance:
viewPager.setCurrentItem(1,false);//这个用false是为了让切换不花眼.如果直接用viewPager.setCurrentItem(1,false)感觉很不爽
break;
case R.id.rb_mine:
viewPager.setCurrentItem(2,false);
break;
}
}
});
radioGroup.check(R.id.rb_shouye);
}
}