package com.example.ali.tabhostkullanm;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TabHost;

public class MainActivity extends AppCompatActivity {
  TabHost tab;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    tab=(TabHost)findViewById(R.id.tab);
    tab.setup();
        TabHost.TabSpec s1=tab.newTabSpec("Sayfa-1");//yeni segmeler olusturuluyor
        TabHost.TabSpec s2=tab.newTabSpec("Sayfa-2");
        TabHost.TabSpec s3=tab.newTabSpec("Sayfa-3");

        s1.setContent(R.id.tab1);//her tabın Linearlayoutu ayarlanıyor
        s2.setContent(R.id.tab2);
        s3.setContent(R.id.tab3);
        s1.setIndicator("Sayfa-1");//gösterge ayarlanıyor
        s2.setIndicator("Sayfa-2");
        s3.setIndicator("Sayfa-2");
        tab.addTab(s1);//sayfalar tabhosta ekleniyor
        tab.addTab(s2);
        tab.addTab(s3);
    }
}

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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=".MainActivity">

    <TabHost
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/tab"
        >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <TabWidget
                android:id="@android:id/tabs"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />

            <FrameLayout
                android:id="@android:id/tabcontent"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <LinearLayout
                    android:id="@+id/tab1"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical">
                  <!-- 1.Sayfa layout'u-->
                </LinearLayout>

                <LinearLayout
                    android:id="@+id/tab2"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical">
                    <!-- 2.Sayfa layout'u-->
                </LinearLayout>

                <LinearLayout
                    android:id="@+id/tab3"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical">
                    <Button
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content" />
                    <!-- 3.Sayfa layout'u-->
                </LinearLayout>

            </FrameLayout>
        </LinearLayout>
    </TabHost>
</android.support.constraint.ConstraintLayout>