tablelayout

//xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" tools:context="com.example.rk1220.MainActivity">

 <android.support.design.widget.TabLayout
     android:layout_width="match_parent"
     android:layout_height="40dp"
     app:tabGravity="center"
     app:tabIndicatorColor="@color/colorAccent"
     app:tabMode="scrollable"
     app:tabSelectedTextColor="@color/colorPrimaryDark"
     app:tabTextColor="@color/colorPrimary"
     android:id="@+id/mytab"></android.support.design.widget.TabLayout>

</LinearLayout>

//mainactivity

package com.example.rk1220;

import android.graphics.Color;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.view.ViewGroup;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private TabLayout tabLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tabLayout = (TabLayout)findViewById(R.id.mytab);
   //创建TabLayout
        TabLayout tabLayout = new TabLayout(this);
        tabLayout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 60));//tab可滚动
        tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
//tab居中显示
        tabLayout.setTabGravity(TabLayout.GRAVITY_CENTER);
//tab的字体选择器,默认黑色,选择时红色
        tabLayout.setTabTextColors(Color.BLACK, Color.RED);
//tab的下划线颜色,默认是粉红色

        tabLayout.setSelectedTabIndicatorColor(Color.BLUE);
    for (int i = 0; i < 20; i++) {
        //添加tab
        tabLayout.addTab(tabLayout.newTab().setText("TAB" + i));
    }
    final Toast toast = Toast.makeText(this, "", Toast.LENGTH_SHORT);
    toast.setGravity(Gravity.CENTER, 0, 0);
//设置tab的点击监听器
    tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        toast.setText(tab.getPosition() + ":" + tab.getText());
        toast.show();
    }

        @Override
    public void onTabUnselected(TabLayout.Tab tab) {

    }

    @Override
    public void onTabReselected(TabLayout.Tab tab) {

        }
    });
    setContentView(tabLayout);
    }
}

//添加design包