tabLayout与viewPager联动

首先是xml布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.ex.qf.dragonflyfm.activity.MainActivity">
<android.support.design.widget.TabLayout
android:id="@+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabItem
android:text="text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<android.support.design.widget.TabItem
android:text="text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<android.support.design.widget.TabItem
android:text="text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<android.support.design.widget.TabItem
android:text="text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<android.support.design.widget.TabItem
android:text="text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
android:layout_weight="1"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:text="button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>

进行一些TabLayout的初始化设置

 //设置tabLayout模式
 tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
 //设置选中颜色和未选中淹死
tabLayout.setTabTextColors(Color.BLACK, Color.RED);

除了采用xml静态添加tabItem的方式，还有tabLayout的动态添加tabItem:

 mTabLayout.addTab(mTabLayout.newTab().setCustomView(createCustomView()).setText("娃哈哈").setIcon(R.drawable.ic_home));
mTabLayout.addTab(mTabLayout.newTab().setCustomView(createCustomView()).setText("娃哈哈").setIcon(R.drawable.ic_home));
mTabLayout.addTab(mTabLayout.newTab().setCustomView(createCustomView()).setText("娃哈哈").setIcon(R.drawable.ic_home));

其次根据id查找TabLayout,ViewPager，

pager = (ViewPager) findViewById(R.id.pager);tabLayout = (TabLayout) findViewById(R.id.tabLayout);

//tabLayout与viewpager的联动

tabLayout.setupWithViewPager(pager);

//为viewPager添加Fragment

pager.setAdapter(new FragmentAdapter(getSupportFragmentManager(),lists));

以下是ViewPager的专注于匹配Fragment的适配器，注意要重写onPageTitle方法，因为，tabLyaout在与ViewPager联动时，

数据被清空了。

package com.ex.qf.dragonflyfm.adapter;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;import java.util.List;/*** Created by administer on 2016/11/14.*/public class FragmentAdapter extends FragmentPagerAdapter{private List<Fragment> lists;@Overridepublic CharSequence getPageTitle(int position) {switch (position) {case 0:return "精选";case 1:return "分类";case 2:return "主播";case 3:return "电台";default:return super.getPageTitle(position);}}public FragmentAdapter(FragmentManager fm, List<Fragment> lists) {super(fm);this.lists = lists;}public FragmentAdapter(FragmentManager fm) {super(fm);}@Overridepublic Fragment getItem(int position) {return lists.get(position);}@Overridepublic int getCount() {return lists.size();}