Get the error from Fragment with different activities when passing data using bundle

Question

I am using Bundle to passing data from my MainActivity to Fragment but it prompts out with the JAVA.NULLPOINTER.EXCEPTION. Error is occur when IgetArguments()` in list_fragments2 in second activity

MainActivity

list_fragment2 fragment = new list_fragment2();
Bundle b = new Bundle();
b.putString("test","text");
fragment.setArguments(b);
Toast.makeText(this, "" + b, Toast.LENGTH_SHORT).show();

list_fragment2

String name = getArguments().getString("test");
ntab2.setText(name);

Logcat

01-02 07:19:52.549 15797-15797/? E/AndroidRuntime: FATAL EXCEPTION: main
                                                      java.lang.NullPointerException
                  at net.simplifiedcoding.androidtablayout.Tab2.list_fragment2.onCreateView(list_fragment2.java:62)
                  at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962)
                  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
                  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1248)
                  at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
                  at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1613)
                  at android.support.v4.app.Fragment.performStart(Fragment.java:1983)
                  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1102)
                  at android.support.v4.app.FragmentManagerImpl.performPendingDeferredStart(FragmentManager.java:926)
                  at android.support.v4.app.FragmentManagerImpl.startPendingDeferredFragments(FragmentManager.java:1272)
                  at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1630)
                  at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:570)
                  at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
                  at android.support.v4.view.ViewPager.populate(ViewPager.java:1106)
                  at android.support.v4.view.ViewPager.populate(ViewPager.java:952)
                  at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1474)

String name = getArguments().getString("test");<------ this line — Tang Weiming, Jan 02 '17 at 07:38
first fragment : Bundle bundle = new Bundle(); bundle.putInt(key, value); fragment.setArguments(bundle); second fragment : Bundle bundle = this.getArguments(); if (bundle != null) { int i = bundle.getInt(key, defaulValue); } — Dinithe Pieris, Jan 02 '17 at 08:21
thanks, i try this before, but my second fragment still return with value null — Tang Weiming, Jan 02 '17 at 08:23

score 0 · Answer 1 · answered Jan 02 '17 at 07:37

0

Here is solution you have to change a little code in list_fragment2 First you have to make bundle and then get String like

Bundle bundle = getArguments();
    if (bundle != null) {
    String name = bundle.getString("test");
    ntab2.setText(name);
  }

Problem solve.

answered Jan 02 '17 at 07:37

Sanwal Singh

1,765
3
17
35

thanks you, but i still cant get the value from activity – Tang Weiming Jan 02 '17 at 07:46

score 0 · Answer 2 · edited Jan 02 '17 at 07:43

0

change this line of your code.

String name = getArguments().getString("test");

to

String name = this.getArguments().getString("test");

it will work.

edited Jan 02 '17 at 07:43

Sagar Gangawane

1,985
1
12
22

answered Jan 02 '17 at 07:39

jack jay

2,493
1
14
27

thanks you , i still get same error – Tang Weiming Jan 02 '17 at 07:47

score 0 · Answer 3 · answered Jan 02 '17 at 07:41

0

On your second fragment use like this

call getArguments() in your List_fragment2's onCreateView() metod:

 public View onCreateView(LayoutInflater inflater,ViewGroup containerObject,
         Bundle savedInstanceState){
         //here is your arguments
         Bundle bundle=getArguments(); 

        //your string
        String test=bundle.getString("test");   
     }
}

answered Jan 02 '17 at 07:41

Sadiq Md Asif

882
6
18

thanks, it didnt work for me – Tang Weiming Jan 02 '17 at 07:50
is your fragment name Tab2? then change to `Tab2 fragment = new Tab2();` – Sadiq Md Asif Jan 02 '17 at 08:06
nope, my bundle in list_fragment2 still return with value null – Tang Weiming Jan 02 '17 at 08:20

Get the error from Fragment with different activities when passing data using bundle

3 Answers3