Can it is possible to use tabhost in MainActivity?

Question

I am trying to use TabHost in MainActivity it is crashing. No idea where is the problem. In the java file in 31th line it is showing error. Previously I'd separately written the TabHost section from MainActivity and added TabHost using "include" syntax. But the project was showing nothing on screen. So, i joined them in MainActivity.

MainActivity.java

package com.chandra.user.newstrailerapp.app;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TabHost;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TabHost tabHost = (TabHost)findViewById(android.R.id.tabhost);

        TabHost.TabSpec tab1 = tabHost.newTabSpec("First Tab");
        TabHost.TabSpec tab2 = tabHost.newTabSpec("Second Tab");
        TabHost.TabSpec tab3 = tabHost.newTabSpec("Third tab");

        tab1.setIndicator("Tab1");
        tab1.setContent(new Intent(this,Tab1Activity.class));

        tab2.setIndicator("Tab2");
        tab2.setContent(new Intent(this,Tab1Activity.class));

        tab3.setIndicator("Tab3");
        tab3.setContent(new Intent(this,Tab1Activity.class));

        tabHost.addTab(tab1);
        tabHost.addTab(tab2);
        tabHost.addTab(tab3);
    }
}

activity_main.xml

<?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:background="#caceca"
    tools:context="com.chandra.user.newstrailerapp.app.MainActivity">

    <TabHost
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:id="@android:id/tabhost">

        <LinearLayout
            android:id="@+id/LinearLayout01"
            android:orientation="vertical"
            android:layout_height="fill_parent"
            android:layout_width="fill_parent">

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

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

        </LinearLayout>

    </TabHost>

</LinearLayout>

After few changes like collapsible toolbar, it is not showing the tabs...

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    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"
    tools:context="com.chandra.user.newstrailerapp.app.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <include layout="@layout/toolbar"/>

    </android.support.design.widget.AppBarLayout>

    <TabHost
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@android:id/tabhost"
        android:layout_below="@+id/toolbar">

        <LinearLayout
            android:id="@+id/LinearLayout01"
            android:orientation="vertical"
            android:layout_height="fill_parent"
            android:layout_width="fill_parent">

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

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

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

                    <android.support.v7.widget.RecyclerView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:id="@+id/list1">

                    </android.support.v7.widget.RecyclerView>

                </RelativeLayout>

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

                    <android.support.v7.widget.RecyclerView
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:id="@+id/list2">

                    </android.support.v7.widget.RecyclerView>

                </RelativeLayout>

                <RelativeLayout
                    android:id="@+id/tab3"
                    android:orientation="vertical"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <android.support.v7.widget.RecyclerView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:id="@+id/list3">

                    </android.support.v7.widget.RecyclerView>

                </RelativeLayout>

            </FrameLayout>

        </LinearLayout>

    </TabHost>

</android.support.design.widget.CoordinatorLayout>

MainActivity.java

package com.chandra.user.newstrailerapp.app;

import android.app.LocalActivityManager;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.TabHost;

public class MainActivity extends AppCompatActivity {

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

        TabHost tabHost = (TabHost)findViewById(android.R.id.tabhost);
        toolbar = (Toolbar)findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        LocalActivityManager mLocalActivityManager = new   LocalActivityManager(this, false);
        mLocalActivityManager.dispatchCreate(savedInstanceState);
        tabHost.setup(mLocalActivityManager);

    }
}

In the tabs it will show the video thumbnails in cardview.

Answer 1

Try this code in your Activity:

     @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TabHost tabHost = (TabHost)findViewById(android.R.id.tabhost);
        LocalActivityManager mLocalActivityManager = new LocalActivityManager(this, false);
        mLocalActivityManager.dispatchCreate(savedInstanceState); 
        tabHost.setup(mLocalActivityManager);
   }