Develop Reference

How to combine two activities together to use it as a single feature?

I am stuck with a problem where I have designed a tab layout that I have used as a library in the current project which has a Recycler View. I want to show the tab layout on top and the recycler view under the tab layout.
For reference in Whatsapp, there is tab layout under which there is a recycler view that shows all the messages.
Problem is that I am confused about how to combine both activities together so the user can use the tab layout.
If anyone knows any solution please help!!

Use single-activity pattern. This pattern means that you need to use Fragments in a single activity (MainActivity, etc). Additional tip, you can use ViewPager2 with TabLayout for your Fragments.
Activities can't be composed into one, cause it designed so.

Nested tabs with viewpager swiping in android?

I've implemented nested tabs with view pager with no problems, but my problem is on the swiping part,
When I do the swiping action the main activity tabs will be switched, but I want the fragment to swipe instead. how can I achieve this?
I've tried implement main tab with tab host and fragment tabhost which doesn't have swiping feature at all, but that disabled whole swipe on the main and fragment together.

Instead of custom library you can try to use Bottom navigation view for bottom bar which has been added to version 25 of the Design Support Library. Here is an Article about it.
So android.support.design.widget.BottomNavigationViewin your activity together with android.support.design.widget.TabLayout and ViewPagerin fragment should work the way you want it to work. And this will also provide good UX (similar to one implemented in Google Plus App)

hello shaheen zahedi maybe it's possible please..with..below
just set bottom tab changed listener
like..
btnTab.setTabChangeListener(null);

You can disable view pager swiping on a particular ViewPager.
But I would suggest to not make 2 ViewPagers on the same screen.
Your bottom TabLayout and corresponding ViewPager can be replaced with BottomBar library.

I feel like it is wise to follow the Google Material guidelines. Not sure if you checked it out already...
Either way, here is what Google considers best practice for lateral navigation between tabs. Hope it helps!

I made a sample project with nested tab and fragment. may be it might help what is you looking for.
following link to download:
NestedTabWithFragment

How to display different layouts with the ViewPager?

In Xamarin, I currently have two different activities and I would like to combine these together and use a ViewPager.
One activity uses the following content view: SetContentView(Resource.Layout.MapWithOverlayLayout);
The second activity uses the following content view: SetContentView(Resource.Layout.HomeScreen);
Can I please have some help to code a simple ViewPager that can add the two above content views into a ViewPager and then show each of these content views via code?
Thanks in advance

For a ViewPager, you will need Fragments instead of Activities.
Here is how to implement a ViewPager with Fragments and different layouts: How to implement a ViewPager with different Fragments / Layouts
The basic idea is that you create a Fragment for every layout you have, and then inside your FragmentPagerAdapter, load the correct Fragment depending on which page you are currently on.

This is how I am doing it in my other post and sorry about not posting the same code here.
Take a look at those links. It will help for sure.
Android:How to create different view in ViewPager?
Its a pretty simple implementation. You can define your own layouts and then use it in the view pager.
Here's my other post where you can get what you want to achieve:
How to use swipe gesture in a view pager's page with android?
Hope this helps..:)

Android Tabs, Detail View on tablet

I'm currently designing the following 2 pane layout and I'm wondering on how to implement it.
Link to Wireframe
So far, I made a two pane activity. On the left is a custom ListView fragment. On the right is a detailpane. The detail pane is what I'm having trouble implementing. I don't know how to create a tab view that doesn't use the actionbar and I'm curious if the best way is to use a ton of fragments for the detailpane or just add change the data dynaically.
[The reason I don't want to use the action bar is that I'm using it for my Help/Refill buttons]
So what tools/tutorials/advice can anyone recommend in implementing this?
Additional information:
Categories or the Tabs will be based on a JSON array.
The listview inside the tabs will be filled with items from a JSON array.
Let me know if you need any more information.

I am currently using a FragmentTabHost and it's just perfect!
You can have your ListFragment and a simple Fragment with your details.
And use your FragmentActivity to communicate with them.
You just need to override the onAttach method of your activity which is called when a Fragment is displayed.

Android - Change content view of TabHost

I try to create a android application with tabHost and I would like to avoid to set intent(activity) for the content of these tabs.
I succeed to create my tabMenu but I would like to change the view of one tab.
How I can do that ?
For example I have one view for Tab1 and two views for Tab2 (when the user click on the button of Tab2_view1 then the content change to Tab2_view2 and the indicator doesn't change (stay on "tab2")).
I hope it is possible but I don't find the way to do that without using different activities for each tabs.
Maybe my conception is bad (I am novice in Android dev.)...
Thank you very much for your help,
Fred

Android has ActivityGroup for the same purpose that you are looking for. By using ActivityGroup you can show multiple views in a single Tab by maintaining the stack of the Views.
ActivityGroup Example 1
ActivityGroup Example 2
Fragment - Answer to me by hackbod