Develop Reference

ActionBar not Displaying

I had created a project with three tabs in android using TabHost and TabSpec.I extend my
main activity with TabActivity The problem is ActionBar didn't display on the app.I used the Holo.Light.DarkActionBar theme.
MainActivity.java
public class MainActivity extends TabActivity {
TabHost tabhost;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tabhost=getTabHost();
TabHost.TabSpec homespec=tabhost.newTabSpec("Home");
homespec.setIndicator("Home",null);
Intent homeintent=new Intent(this,HomeActivity.class);
homespec.setContent(homeintent);
TabHost.TabSpec eventspec=tabhost.newTabSpec("Event");
eventspec.setIndicator("Event");
Intent eventintent=new Intent(this,EventActivity.class);
eventspec.setContent(eventintent);
TabHost.TabSpec profilespec=tabhost.newTabSpec("Profile");
profilespec.setIndicator("Profile");
Intent profileintent=new Intent(this,ProfileActivity.class);
profilespec.setContent(profileintent);
tabhost.addTab(homespec);
tabhost.addTab(eventspec);
tabhost.addTab(profilespec);
}
}
activity_main.xml
`
<TabHost
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#android:id/tabhost"
android:layout_weight="1">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:id="#+id/tab1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
/>
<LinearLayout
android:id="#+id/tab2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"/>
<LinearLayout
android:id="#+id/tab3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"/>
</FrameLayout>
</LinearLayout>
</TabHost>
Is there any other way to achieve this Suggest me also?

Set theme for this activity in AndroidManifest.xml:
<activity android:name=".MainActivity"
android:theme="#android:style/Theme.Holo.Light"/>
Go to activity_main and klick to Design -> Theme (on top bar, next to Device name and land-scape) -> Manifest Themes -> and choose your theme.
edit:
add this of course (If you are not intentionally forgotten )
<?xml version="1.0" encoding="utf-8"?>

change your layout like this:
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</FrameLayout>
</LinearLayout>
</TabHost>

TabHost add tabs dynamically

I have a TabHost and I want to create tabs dynamically. I have looked at many examples but they are not working.
TabHost tabHost;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tabHost = (TabHost)findViewById(android.R.id.tabhost);
tabHost.setup();
TabHost.TabSpec tab1 = tabHost.newTabSpec("First Tab");
tab1.setIndicator("First Tab");
tab1.setContent(new Intent(this,MainActivity2.class));
tabHost.addTab(tab1);
This is the last thing that I have tried but it does not work. Here is some links that I have considered. I can't find what I am doing wrong.
Example1
Example2
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.LH.tabletres.MainActivity">
<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>

I think you forget to set android:id="#android:id/tabhost" to your tabhost. like below
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent" >........
.....
</TabHost>

I think you have to write
<TabHost
android:id="#+id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent" >
........
</TabHost>
so change #android:id to #+id
I hope that helps.

Use this code :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TabHost
android:id="#+id/tabhost"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<HorizontalScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:fillViewport="true"
android:scrollbars="none">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:tabStripEnabled="false">
</TabWidget>
</HorizontalScrollView>
<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:background="#FFFFFF"
android:orientation="vertical">
</LinearLayout>
</FrameLayout>
</LinearLayout>
</TabHost>
final TabHost tabs = (TabHost) findViewById(R.id.tabhost);
tabs.setup();
tabs.setCurrentTab(0);
for (int i = 0; i < 5; i++) {
TabHost.TabSpec spec1 = tabs.newTabSpec("tag1");
spec1.setContent(new TabHost.TabContentFactory() {
public View createTabContent(String tag) {
return (new AnalogClock(MainActivity.this));
}
});
spec1.setIndicator("Clock");
tabs.addTab(spec1);
}

Why can't my TabHost child activity find the parent TabHost ID?

I have a TabHost activity that are switching activities, so my main looks like this:
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:padding="5dp" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="-4dp"
android:layout_weight="0" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:padding="5dp" />
</LinearLayout>
</TabHost>
And one of my child activities XML is a ListView:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
And in this child activity, (which extends ListActivity) I'm trying to find the parent TabHost:
TabHost tabHost = (TabHost) getParent().findViewById(R.id.tabhost);
tabHost.setCurrentTab(0);
But, the R.id.tabhost is not found (tabhost id cannot be resolved).
What am I doing wrong?

Make it android.R.id.tabhost
It will work.

Android - Tabhost with two tabwidgets

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</FrameLayout>
</LinearLayout>
This is my layout, then in my activity which extends TabActivity I add the five different tabs like this:
mTabHost = getTabHost();
mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("tab1").setContent(new Intent().setClass(this, Activity1.class).putExtra("language", language)));
mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("tab2").setContent(new Intent().setClass(this, Activity2.class).putExtra("language", language)));
mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("tab3").setContent(new Intent().setClass(this, Activity3.class).putExtra("language", language)));
mTabHost.addTab(mTabHost.newTabSpec("tab4").setIndicator("tab4").setContent(new Intent().setClass(this, Activity4.class).putExtra("language", language)));
mTabHost.addTab(mTabHost.newTabSpec("tab5").setIndicator("tab5").setContent(new Intent().setClass(this, Activity5.class).putExtra("language", language)));
The problem I have is that all the five tabs are put in one row, but I want to put the three first tabs on top and then the two other tabs below the three first. How can I achieve this?
Thanks in advance.

If you are just trying to arrange your tabs(if all 5 are not displaying properly),any this is the only single reason to do as you asked (at top 3tabs and below 2 tabs), then you have better solution to put your TabView in ScrollView.
For example :
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<HorizontalScrollView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:fillViewport="true"
android:scrollbars="none">
<TabWidget android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</HorizontalScrollView>
<FrameLayout android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
</TabHost>
Refrence : Scrolling Tabs in Android
Hope you are looking for the same.

How to add tabs at bottom

I have a tabhost which contains three tabs, connected with three activities. All three tabs are in the upper side. How can I make these three tabs at the bottom?
I found this, but there are still some problems.
This is my tabhost XML file:
<?xml version="1.0" encoding="UTF-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
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:layout_weight="1" />
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0"/>
</LinearLayout>
</TabHost>
In my TabActivity class, I have following code:
setContentView(R.layout.tabs);
TabHost mTabHost = (TabHost)findViewById(android.R.id.tabhost);
mTabHost.addTab(mTabHost.newTabSpec("tab_test1").setIndicator("TAB 1").setContent(new Intent(AndroisTabViewActivity.this,TabActivity1.class)));
mTabHost.addTab(mTabHost.newTabSpec("tab_test2").setIndicator("TAB 2").setContent(new Intent(AndroisTabViewActivity.this,TabActivity1.class)));
mTabHost.addTab(mTabHost.newTabSpec("tab_test3").setIndicator("TAB 3").setContent(new Intent(AndroisTabViewActivity.this,TabActivity1.class)));
mTabHost.setCurrentTab(0);
There is one activity named TabActivity1 which I have also included in Manifest file. But it is showing the error:
Can't get the activity TabActivity1.

I assume you want to show "Tab" at bottom of the window, just try this:
<RelativeLayout
android:layout_width="match_parent"
android:id="#+id/linearLayout1"
android:layout_height="match_parent">
<TabWidget
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#android:id/tabs"
android:layout_alignParentBottom="true">
</TabWidget>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#android:id/tabcontent">
</FrameLayout>
</RelativeLayout>

If you want to use the LinearLayout:
<?xml version="1.0" encoding="UTF-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
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="0dp"
android:layout_weight="1" />
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</TabHost>
With this solution, the tab content will take no space firstly, the TabWidget will take its own space, then the remaining space will be given to the tab content.