How to switch tabs programmatically in Android from fragment?

Question

I have implemented a TabActivity which extends FragmentActivity. It has 5 tabs each tab is a Fragment. What i am looking for is to switch between the tabs programmatically.

For eg: if i am in tab4. On button click I want to move from tab4 to tab1. Tried a lot but couldn't find the solution for this.

Tried with the following but it doesn't help.

From SecondTab

public void switchTabInActivity(String value){
    FirstTab parent;
    parent = (FirstTab) getActivity().getParent();
    parent.switchTab(value);
}

TabActivity

  /** To Change Tab*/
public void switchTab(String tabno){ 
    this.onTabChanged(tabno);
}

score 31 · Answer 1 · answered Aug 24 '15 at 19:25

31

for Material support you switch the tablayout from a fragment in the following ways:

1) send a broadcast that is received by the parent activity which then modifies the tab.

context.sendBroadcast(yourintent);

2.) A modification of vino's answer,

TabLayout tabhost = (TabLayout) getActivity().findViewById(R.id.tabLayout);
tabhost.getTabAt(2).select();

tablayout is the id of the tablayout as defined in your main xml.

answered Aug 24 '15 at 19:25

Kennedy Nyaga

3,455
1
26
25

5

Yes it works, just for information tab indexes starts from 0. – Rakesh Patil May 05 '16 at 03:03
Hi @Kennedy, my tabhost is not getting initialised. It is showing null. What could be the mistake for NullPointerException?? – Sandeep Yohans Mar 29 '18 at 06:18
It's working now, error was due to a silly mistake of mine. :) – Sandeep Yohans Apr 06 '18 at 07:07
Hi! Can someone please help me? I am getting an error: `Cannot resolve method 'getActivity()'`. – Lloyd Dominic Jun 07 '19 at 10:09
@LloydDominic make sure you are working from a fragment. – Kennedy Nyaga Oct 16 '19 at 08:08

score 21 · Accepted Answer · answered May 01 '13 at 09:13

21

Finally i can switch between the tabs programatically from Fragments using the following line of code

  TabHost host = (TabHost) getActivity().findViewById(android.R.id.tabhost);
  host.setCurrentTab(2);

Hope it will help some one.

answered May 01 '13 at 09:13

vinothp

9,939
19
61
103

1

`android.R.id.tabhost` will throw a nullpointerexception. You are already calling `getActivity.findViewById` `findViewById(R.id.tabhost)` is the right option – Ojonugwa Jude Ochalifu Dec 13 '16 at 22:51

score 19 · Answer 3 · answered Apr 28 '18 at 03:45

19

I have tabs (using TabLayout not TabHost(depreciated))(with Fragments) in my Main Activity in which in my first tab(fragment) with a click listener in the fragment which is for changing the current tab in my MainActivity.

I successfully change the current tab via the below in the onCreateView() method within the fragment.

TabLayout tabs = (TabLayout)((MainActivity)getActivity()).findViewById(R.id.tabs);
tabs.getTabAt(1).select();

answered Apr 28 '18 at 03:45

BENN1TH

2,003
2
31
42

2

this is working answer... upper ones not working because tablayout is null in fragments even if we pass it via constructor.. – Mehtab Jul 02 '18 at 17:51

score 7 · Answer 4 · edited May 23 '17 at 10:31

7

Take a look at this answer: https://stackoverflow.com/a/5460651/198996

((TabActivity) getParent()).getTabHost().setCurrentTab(2)

edited May 23 '17 at 10:31

Community

1
1

answered May 01 '13 at 08:58

TomTasche

5,448
7
41
67

Thanks Tom i think thats from activity i am looking from Fragment – vinothp May 01 '13 at 09:00
@Vino That's from the Fragment. The `getParent()` is a method in Fragment which returns the Activity. – ataulm May 01 '13 at 09:02
1

@Vino try `getActivity()` instead of `getParent()` then. – TomTasche May 01 '13 at 09:03
yes tried that but i am facing `The method getTabHost() is undefined for the type TabActivity` `((TabActivity) getActivity()).getTabHost().setCurrentTab(3);` – vinothp May 01 '13 at 09:06
use `switchTab()` and cast it as your concrete implementation rather than TabActivity then. Note that TabActivity is deprecated. – ataulm May 01 '13 at 09:08
@Vino Implement a method `getTabHost()` in your TabActivity, which returns the TabHost... – TomTasche May 01 '13 at 09:10
Found an answer Tom.I have answered my question. Thanks for your support. – vinothp May 01 '13 at 09:14
Well, that's basically what I said. Anyway, good to hear you solved your problem. – TomTasche May 01 '13 at 09:21

score 5 · Answer 5 · answered Apr 25 '19 at 09:19

If you're using TabLayout instead of TabHost , I suggest a modification to BENN1TH's answer that worked for me:

  TabLayout tabs = getActivity().findViewById(R.id.tab_layout);
  tabs.getTabAt(tabNumber).select();

(The difference is R.id.tab_layout)

score 1 · Answer 6 · answered May 10 '21 at 13:53

1

for kotlin , Please use this form fragment

 activity!!.<tab_id_in_xml>.getTabAt(tab_number)!!.select()

answered May 10 '21 at 13:53

Abhay Pratap

1,886
11
15

score 0 · Answer 7 · answered Jan 29 '23 at 10:12

0

Here's another approach in 'newer' kotlin:

requireActivity().findViewById<TabLayout>(R.id.tab_layout)?.getTabAt(destinationTabNumber)?.select()

using ?. instead of !! to avoid asserting.

answered Jan 29 '23 at 10:12

Roar Grønmo

2,926
2
24
37

How to switch tabs programmatically in Android from fragment?

7 Answers7

Linked