What is the lifecycle of tabs, when switching between Tabs in TabLayout

Question

I have five tabs in Tablayout with fragments. I have a Floating button at the Bottom right corner of the first Tab. when I click the FAB button, it inflates a small CardView(Initially Cardview was set to INVISIBLE), and when I click FAB button again, Cardview goes to invisible state. (To achieve that, I have used 'flags' true and false).

Now, my requirement is--- Suppose, I am in first Tab. And I clicked the FAB button, in return, it inflated Cardview. Without clicking the FAB button again(Cardview is in VISIBLE state) I went to second Tab. Then, I moved to First Tab from the second Tab. but, still the Cardview stays VISIBLE state.

I want to make the Cardview INVISIBLE when I move to other Tabs and come back.

please tell me how to achieve that functionality.

Thanks in advance.

Paresh P. · Accepted Answer · 2021-10-19T12:15:44.740

0

What is the lifecycle of tabs, when switching between Tabs in TabLayout

Kindly go through this Answer of mine to understand what happens when you switch the tabs.

I want to make the Cardview INVISIBLE when I move to other Tabs and come back.

You can utilize setOnTabSelectedListener of TabLayout

tabLayout.setOnTabSelectedListener(
  new TabLayout.ViewPagerOnTabSelectedListener(mViewPager) {
    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        super.onTabSelected(tab);
        // Do your login here.. according to tab positon
    }
});

edited Oct 19 '21 at 12:15

answered Mar 24 '18 at 15:48

Paresh P.

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Should I write this in Fragment or hosting Activity..?? – Thrinadh Reddy Mar 24 '18 at 15:57
An activity that hosts `viewpager` and `tabLayout` – Paresh P. Mar 24 '18 at 15:58
It says, setOnTabSelectedListener is deprecated. – Thrinadh Reddy Mar 24 '18 at 16:01
Use `addOnTabSelectedListener`. – Paresh P. Mar 24 '18 at 16:02
I am quite new to programming. would you tell me what to write in that Listener to make Cardview Invisible when I move between Tabs – Thrinadh Reddy Mar 24 '18 at 16:05
Okay. [this](https://stackoverflow.com/questions/29587584/call-tabbed-fragment-method-from-activity) will help. What you have to do is.. find current fragment of that specific tab position and access fragment methods which hide your `carView` – Paresh P. Mar 24 '18 at 16:09
The link is not working anymore. – Melferas Oct 17 '21 at 21:21

What is the lifecycle of tabs, when switching between Tabs in TabLayout

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