Develop Reference

Correct way to attach an item selected listener with a spinner in a fragment attached with viewpager

I have 4 fragments attached with a viewpager. The 1st fragment has a spinner that has an item selected listener in onCreateView() method. Each time an item is picked from the spinner, a list adds that data.
Now when I swipe right to get to the other fragments, the 1st fragment is paused. Then if I come back to the 1st fragment the onCreateView() method runs again and loads the item selected listener again and adds the previosly added data again.
To avoid the situation I've taken the item selected listener inside an on touch listener. Now It's working as expected. But it just does not feel right. Any advice or help will be appreciated.
Thanks in advance.

Use this like this:
viewPager = (ViewPager) findViewById(R.id.viewpager);
viewPager.setOffscreenPageLimit(4); // 4 used for number of fragments like you are using 4 fragments using viewpager.
This setOffscreenPageLimit will not refresh your fragment again and again.

Create only the first fragment in a ViewPager when setting adapter

I'm want to make a ViewPager with TabLayout, 5 tabs and fragments in all. When the Activity is created, I only want the FragmentPagerAdapter to create the first (1st) tab, and then create the others when the user selects those tabs. setUserVisibleHint() does not work for my use case. I have also tried setting a dummy adapter first.

It cannot be done with viewpager
the default value of loaded screens outiside the viewpager is 1 and you can change it by calling
viewPager.setOffscreenPageLimit(1);
however the minimum value of the offscreenLimit is 1.
Hope it helps.

Load custom position of page when create viewpager fragment

I got a problem with viewpager fragment.
Example: i got an array: 1-2-3-4-5-6.
I want when i create viewpager fragment, it will jump to fragment position 3.
Now the way viewpager do is: load all the list seriated like (1 and 2 and 3 and..), after that this set viewpager.setCurrentItem(3,false).
But with the way like that, it take more time when user click to open viewpager, is any way to do like:
When create viewpager, it will load fragment with position 3 first, after finish build UI of fragment(3), it will load another position of fragment, so when user click to open viewpager, they will not have waiting for viewpager create.
So please give me the ideal for that case.

The fragment data of the corresponding tab of viewpager need to be loaded only when the tab is clicked

I am having a viewpager and having 3 tabs in it. All the three tabs are having their fragments. What I noticed that each fragment data is getting loaded at the first time when I am setting adapter to viewpager.
What I need is to load the fragment data of the corresponding tab only when the particular tab is getting clicked.
I have noticed one more issue in it. Like when the activity started in which I am having viewPager, then the data of the first tab's fragment get loaded at the same time the data of the second tab's fragment also get loaded and that is shown when I click on that tab.
Same way when I click on Second Tab, third Tab's Fragment date get loaded.
So what I need is that the data of the fragment should be loaded only when I click on the particular tab.
Thank you so much in advance..

You should use the ViewPager.setOffscreenPageLimit(0) to only load the currently displayed content.

Its the View-pager behaviour that it loads one page left/right to current page even if you have specified setOfflinePageLimit(0).
To load each fragment on click on tab, you should use LocalBroadcastReciever.

How to add a fragment on tap of grid view items?

I am having tabs under which they have there own fragment.There is one tab whose fragment is having gridview items.I want that on tap of each item a new fragment should be open.Tab must be remain but fragment should be different.
Is this possible?...
Suggest me some possible way to do it..
Thanks..

Yeas it is possible. First, you have to use GridView's setOnItemClickListener(), to set a listener gridviews click.
Then you can detect wich element has been clicked and make the transition. How do you implemented the tabs stuff? To make the transition you need the fragment manager and replace the fragment.
Fragment fragment = new Fragment();
getFragmentManager().beginTransaction().replace(R.id.content_frame,fragment).commit();