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Tuesday, January 22, 2013

TabHost- Tabs Android

 TabActivity:


In android, Using tabs, we can open multiple activities within single screen.
Three ways to create Tabs.

1. extends class from TabActivity or ActivityGroup

2. extending Activity and  use LocalActivityManager

3. using fragments ( Api 11 required).

Here is the sample working code for Tabs



package com.srinivas.tabs;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.app.Activity;
import android.app.LocalActivityManager;
import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.widget.TabHost;

public class MainActivity extends Activity {
    private static TabHost tabHost;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tabs);
        tabHost = (TabHost) findViewById(R.id.tabhost);
        LocalActivityManager mLocalActivityManager = new LocalActivityManager(this, false);
        mLocalActivityManager.dispatchCreate(savedInstanceState);
        tabHost.setup(mLocalActivityManager);
        Resources res = getResources();
       
        TabHost.TabSpec spec;

        Intent songintent = new Intent().setClass(this, SongsActivity.class);

        spec = tabHost.newTabSpec("songs")
                .setIndicator("Songs", res.getDrawable(R.drawable.ic_launcher))
                .setContent(logintent);
        tabHost.addTab(spec);

        Intent videointent = new Intent().setClass(this, VideosActivity.class);
        spec = tabHost
                .newTabSpec("video")
                .setIndicator("Videos", res.getDrawable(R.drawable.ic_launcher))
                .setContent(viodeintent);
        tabHost.addTab(spec);

        Intent booksintent = new Intent().setClass(this, BooksActivity.class);
        spec = tabHost.newTabSpec("books")
                .setIndicator("Books", res.getDrawable(R.drawable.ic_launcher))
                .setContent(booksintent);
        tabHost.addTab(spec);

       tabHost.setCurrentTab(0);
}
}


tabs.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:id="@+id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <RelativeLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:padding="5dp"
        />
        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:gravity="bottom"
            android:layout_alignParentBottom="true"
        />
    </RelativeLayout>
</TabHost>


if you want to place Tabs at top , remove    android:layout_alignParentBottom="true"

https://picasaweb.google.com/115546358500228747299/Jun27201203?authkey=Gv1sRgCLmos6S5s_iaTA&feat=directlink#5836330903891211490

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