Develop Reference

How to hide just the pager tabs (but not the action bar) in Android

I'm using ViewPager to display tabs in Android, but in a circumstance, I want to display a fragment on top of the pager/tabs, but NOT on top of the ActionBar. If I hide the action bar, they both disappear. If I don't do it, I can't find a way to get rid of pager's tab bar (or whatever it's called). Here is a visual representation of what I'm trying to achieve:
How can I hide that bar without hiding the action bar?

I think you can do it by setting a new navigation mode.
Use setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD) to hide them
Use setNavigationMode(ActionBar.NAVIGATION_MODE_TABS) to show them again
Edit:
Please note that the setNavigationMode methods are deprecated in Android Lollipop.
Reference

Use this to get rid of tabs in actionbar
setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD)

Using SlidingMenu with ABS Tabs working incorrectly?

I have Actionbar Sherlock and SlidingMenu set up in my project. I want the menu to slide in under the actionbar, so I set:
setSlidingActionBarEnabled(false);
Though, when I have the action bar Navigation Mode set up with tabs:
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
They stick with the action bar instead of sliding away. That causes the issue of being able to switch tabs and the view pager switching while the menu stays open. Along with it not being the aesthetic I am going for.
Is it possible for the tabs to slide away from the action bar with the menu? Or would it just be more practical to set up a custom implementation with radio buttons?

It's not possible to have the tabs slide when you are using NAVIGATION_MODE_TABS.
The alternative is to use the ViewPagerIndicator library and the TabPageIndicator mode from that. That way the tabs are a part of the activity layout, and will slide. The downside is that the tabs won't get embedded in the action bar on larger devices or when a device is in landscape.

Sherlockaction Bar NAVIGATION_MODE_TABS Changes on orentation?

When changing from a vertical view to a horizontal view, the NAVIGATION_MODE_TABS will automatic changes to a list? May i know how do i fix this to NAVIGATION_MODE_TABS ?

There is nothing to fix, as this is by design. The native action bar does this as well. I filed an issue pointing out this behavior, and was told that the action bar is working as intended. ActionBarSherlock, in turn, aims to mirror Android's native behavior.
If you want tabs that are always tabs, use anything other than action bar tabs, such as:
ViewPager with a tab indicator (PagerTabStrip, TabPagerIndicator from the ViewPagerIndicator library, etc.)
FragmentTabHost
Etc.

ActionBarSherlock wrong tabs position on android 2.2.2

I'm having serious problems getting tabs in actionbarsherlock below main action bar tabs to work in an app that runs from Android 2.2 up and looks like Android 4. (see link)
Tabs position

Have you tried running the official Demos app of ActionBar Sherlock? (https://github.com/downloads/JakeWharton/ActionBarSherlock/ActionBarSherlock-Sample-Demos-4.2.0.apk) It should contain a demo for the actionbar with Tabs.
If that works on Android 2.2 then you know the problem is in your code and you can check the Demos source code to see what you are doing differently (https://github.com/JakeWharton/ActionBarSherlock/tree/master/samples).

It's usual behavior of action bar (actionbarsherlock just simulate it). Use
ActionBar act = getSupportActionBar();
act.setStackedBackgroundDrawable(getResources().getDrawable(R.drawable.mytab_base_t));
to avoid white color in top bar (this option you can't access from any theme item yet). You can also monitor action bar height to change custom view of tabs on-fly, but you can't change action bar behavior, forget it. Otherwise please use PagerTitleStrip against action bar tabs.

android action bar with tabs below the screen

For my application , I'm planning to have a design as this:
http://img811.imageshack.us/img811/7045/problemel.png
-Design needs to have a title bar which is indeed the action bar in android. To overcome the compatibility issues, I used the sherlock action bar which is said to support older versions that dont have action bars. I havent tested yet for the older devices however.
-As far as I know, for navigation , we could rather use tabbed or dropdown list methods. I want to have constant tabs for every page in my app to stand below the page. This reflects the tabbed action bar, however I want it below not just under the action bar. I don't know how but youtube application somehow has it in the middle of the screen (if it's not a custom view). So how do we have tabs positioned in the bottom of the page?
-Also I want to have another menu, whose items depend on the page it's on. But the apperance will be the same for every page. In the picture on the left this menu has buttons as "Bt 1" ,"Bt 2". I dont want to repeat the same xml for every activity page, but I'm not sure how to achieve it without repeating. If the action bar allowed using both navigation tabs and the drop down list, I could put the items of this menu in the dropdown list just as the picture on the right (onto the gray button). But I guess it does not?!
Therefore I have to repeat the menu xml code in every page or is there another smart way?
Any advice will be appreciated.

This can be achieved not with tabs but by adding items to a linear_layout with a gravity of bottom but it is a bad practice as #D_Steve595 stated and should be avoided in android designs.

actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setDisplayShowHomeEnabled(false);