Tabhost on Click Button

#ini bagian activitynya

package com.catcode.sipintar;

import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TabHost;

public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    private Toolbar toolbar;
    private TabHost tabHost;
    private Button btn_tindak;
    private TabHost host;
    private TabHost.TabSpec spec;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        host = (TabHost)findViewById(R.id.tabHost);
        host.setup();

        //Tab 1
        host.addTab(host.newTabSpec("Hari ini").setIndicator("Hari ini").setContent(R.id.tab1));

        //Tab 2
        host.addTab(host.newTabSpec("Osis").setIndicator("Osis").setContent(R.id.tab2));


//        spec = host.newTabSpec("Osis");
//        spec.setContent(R.id.tab2);
//        spec.setIndicator("Osis");
//        host.addTab(spec);

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

        btn_tindak = (Button) findViewById(R.id.btn_tindakan);
        btn_tindak.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
//                Intent intent = new Intent(getApplicationContext(), QRActivity.class);
            }
        });
    }


    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_camera) {
            // Handle the camera action
        } else if (id == R.id.nav_gallery) {

        } else if (id == R.id.nav_slideshow) {

        } else if (id == R.id.nav_manage) {

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}



#ini bagian xmlnya

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TabHost
        android:id="@+id/tabHost"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true">

        <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">
            </TabWidget>

            <FrameLayout
                android:id="@android:id/tabcontent"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@color/white">

                <LinearLayout
                    android:id="@+id/tab2"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical">

                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:padding="20dp">

                        <Button
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:id="@+id/btn_tindakan"
                            android:text="Tindak siswa"
                            android:background="@drawable/radius_button_asphalt"
                            android:padding="15dp"
                            android:layout_marginRight="20dp"
                            android:layout_marginBottom="20dp"
                            android:textColor="@color/white"
                            android:drawableTop="@drawable/peluit" />

                        <Button
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:id="@+id/btn_pasal"
                            android:layout_toRightOf="@+id/btn_tindakan"
                            android:text="Pasal-Pasal"
                            android:padding="15dp"
                            android:layout_marginBottom="20dp"
                            android:background="@drawable/radius_button_orange"
                            android:textColor="@color/white"
                            android:drawableTop="@drawable/buku_kebijakan"/>

                        <Button
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:id="@+id/btn_list_point"
                            android:layout_marginRight="20dp"
                            android:layout_below="@+id/btn_tindakan"
                            android:text="point siswa"
                            android:padding="15dp"
                            android:background="@drawable/radius_button_turquoise"
                            android:textColor="@color/white"
                            android:drawableTop="@drawable/list_point"/>

                        <Button
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:id="@+id/btn_jadwal_osis"
                            android:layout_below="@+id/btn_pasal"
                            android:layout_toRightOf="@id/btn_list_point"
                            android:text="jadwal osis"
                            android:padding="15dp"
                            android:background="@drawable/radius_button"
                            android:textColor="@color/white"
                            android:drawableTop="@drawable/jadwal_osis"/>

                    </RelativeLayout>

                </LinearLayout>

                <LinearLayout
                    android:id="@+id/tab1"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical">

                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:background="@drawable/abc"
                        android:padding="15dp">

                        <TextView
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:text="Hello World"
                            android:textStyle="bold"/>

                    </RelativeLayout>

                </LinearLayout>


            </FrameLayout>
        </LinearLayout>
    </TabHost>

</LinearLayout>