Pass some data with viewpager.setCurrentItem(position)

Question

I want to passes some value inside button click with viewpager tab fragment changing. I have two question.

what is the best way to passes data?

If I use static data what will be problem? such like:

public static string abc=""

case R.id.IVActionMore:   
ViewPager viewPager = (ViewPager) getActivity().findViewById(R.id.tabs_viewpager);
viewPager.setCurrentItem(3);
//abc = "action";
break;

Well for me there is no problem in using static string, I also use it to pass some info around — Pulkit, Sep 06 '17 at 06:15
I only dabbled in Android development, but there were Context objects you should use to put data. A static is not a great idea because they aren't controlled by the lifecycle concept, so your App may be reloaded without noticing and the data is gone. — daniu, Sep 06 '17 at 06:19
yes I also tried only for tab change but how can I passes data. and what will be the best way. — t.gakk, Sep 06 '17 at 06:22

IntelliJ Amiya · Answer 1 · 2017-09-06T07:11:57.973

1

Use addOnPageChangeListener

void addOnPageChangeListener (ViewPager.OnPageChangeListener listener) Add a listener that will be invoked whenever the page changes or is incrementally scrolled.

How ?

 viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
    @Override
    public void onPageScrolled(int position, float 
                     positionOffset, int positionOffsetPixels) {

    }

    @Override
    public void onPageSelected(int position) 
    {

     if(position == 3)
     {
           // DO your work
     }

    }

    @Override
    public void onPageScrollStateChanged(int state) {

    }
});

OnClick

 buttonOBJ.setOnClickListener(new OnClickListener()
   {
             @Override
             public void onClick(View v)
             {
                viewPager.setCurrentItem(viewPager.getCurrentItem() + 1, true);
             } 
   });

edited Sep 06 '17 at 07:11

answered Sep 06 '17 at 06:23

IntelliJ Amiya

74,896
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I want to change page on button click. – t.gakk Sep 06 '17 at 06:51
thanks for your replay. but "Don't use STATIC . It's not good approach". what is the best approach? and how can i use that in your code. – t.gakk Sep 06 '17 at 07:09
@t.gakk No problem for `static` . But aware from https://stackoverflow.com/questions/2472690/in-java-is-there-any-disadvantage-to-static-methods-on-a-class – IntelliJ Amiya Sep 06 '17 at 07:11
@t.gakk For data passing case, Use SharedPref . http://mrbool.com/how-to-implement-shared-preferences-in-android/28370 – IntelliJ Amiya Sep 06 '17 at 07:23
Is it best way to passes data ? – t.gakk Sep 06 '17 at 07:28
1

@t.gakk i use `sharedpref` not problem yet – IntelliJ Amiya Sep 06 '17 at 07:29
1

@t.gakk for your above question, check https://stackoverflow.com/questions/4878159/whats-the-best-way-to-share-data-between-activities – IntelliJ Amiya Sep 06 '17 at 07:44

Md Tariqul Islam · Accepted Answer · 2017-09-06T07:27:11.247

1

You can use shared-preference to set and get the data. using static is not a great idea. check the link

https://stackoverflow.com/a/23024962/4549220

edited Sep 06 '17 at 07:27

answered Sep 06 '17 at 07:20

Md Tariqul Islam

2,736
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Is it best way to passes data ? – t.gakk Sep 06 '17 at 07:28
1

You can check this: https://stackoverflow.com/questions/4878159/whats-the-best-way-to-share-data-between-activities https://stackoverflow.com/questions/7885276/how-to-share-same-data-between-multiple-activities-in-android – Md Tariqul Islam Sep 06 '17 at 09:46

Pass some data with viewpager.setCurrentItem(position)

2 Answers2