There is a Main Activit, which goes to another Activit where TabLayout is located, well, and the fragments are understandable. I need to transfer the values ​​of type int to the fragment, let's say One, how to implement it?

Main Activi

Intent intent = new Intent(MainActivityG.this,MainActivity.class); intent.putExtra("P",number1); intent.putExtra("R",number2); startActivity(intent);

Activate fragment

 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); viewPager = (ViewPager) findViewById(R.id.viewpager); setupViewPager(viewPager); tabLayout = (TabLayout) findViewById(R.id.tabs); tabLayout.setupWithViewPager(viewPager); } private void setupViewPager(ViewPager viewPager) { ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager()); adapter.addFragment(new OneFragment(), " "); adapter.addFragment(new TwoFragment(), " "); adapter.addFragment(new ThreeFragment(), " "); viewPager.setAdapter(adapter); } class ViewPagerAdapter extends FragmentPagerAdapter { private final List<Fragment> mFragmentList = new ArrayList<>(); private final List<String> mFragmentTitleList = new ArrayList<>(); public ViewPagerAdapter(FragmentManager manager) { super(manager); } @Override public Fragment getItem(int position) { return mFragmentList.get(position); } @Override public int getCount() { return mFragmentList.size(); } public void addFragment(Fragment fragment, String title) { mFragmentList.add(fragment); mFragmentTitleList.add(title); } @Override public CharSequence getPageTitle(int position) { return mFragmentTitleList.get(position); } }

fragment

 public class OneFragment extends Fragment{ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { final View view = inflater.inflate(R.layout.fragment_one, container, false); P = Integer.parseInt(getActivity().getIntent().getExtras().getString("P")); Toast.makeText(getContext(), P, Toast.LENGTH_SHORT).show(); return view; }

}

    1 answer 1

    In fragments, the values ​​are passed in the same way as in activation through the Bundle :

     Fragment fr = new MyFragment(); Bundle args = new Bundle(); args.putInt("key", 42); fr.setArguments(args);

    Now inside the fragment get the data like this:

     int myInt = getArguments().getInt("key", -1);