Ufdjrw

Like a lot of other people on the stackoverflow, for example:
https://ru.stackoverflow.com/questions/571704/%D0%A0%D0%B0%D0%B7%D0%BD%D1%8B%D0%B9-%D0%BA%D0%BE%D0%BD%D1%82%D0%B5%D0%BD%D1%82-%D0%BD%D0%B0-%D1%81%D1%82%D1%80%D0%B0%D0%BD%D0%B8%D1%86%D0%B0%D1%85-viewpager

I'm trying to create ViewPager with different layouts, but with:
https://github.com/ogaclejapan/SmartTabLayout

Expectation: beautiful ViewPager with 3 tabs, which can switch different layouts/fragments by clicking on the buttons or by swipe.

Reality: beautiful ViewPager with 3 tabs, which are doing nothing.

Looking for your help, thanks.

What I have done in MainActivity class:

public class MainActivity extends AppCompatActivity

protected void onCreate(Bundle savedInstanceState) 
super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 getSupportActionBar().setElevation(0); //toolbar shadow

getSupportActionBar().setDisplayHomeAsUpEnabled(true);

 ViewGroup tab = findViewById(R.id.linear_test);
 tab.addView(LayoutInflater.from(this).inflate(R.layout.activity_main, tab, false));

 ViewPager viewPager = findViewById(R.id.viewpager);
 SmartTabLayout viewPagerTab = findViewById(R.id.viewpagertab);
 setup(viewPagerTab);

 FragmentPagerItems pages = new FragmentPagerItems(this);

 pages.add(FragmentPagerItem.of("Вкладка 1", DemoFragment.class));
 pages.add(FragmentPagerItem.of("Вкладка 2", DemoFragment.class));
 pages.add(FragmentPagerItem.of("Вкладка 3", DemoFragment.class));

 FragmentPagerItemAdapter adapter = new FragmentPagerItemAdapter(
 getSupportFragmentManager(), pages);

 viewPager.setAdapter(adapter);
 viewPagerTab.setViewPager(viewPager);

public void setup(final SmartTabLayout layout) 
 //Do nothing.

What I have done in my DemoFragment:

public class DemoFragment extends Fragment 

 static final String ARGUMENT_PAGE_NUMBER = "arg_page_number";

 private int page;

 static DemoFragment newInstance(int page) 
 DemoFragment pageFragment = new DemoFragment();
 Bundle arguments = new Bundle();
 arguments.putInt(ARGUMENT_PAGE_NUMBER, page);
 pageFragment.setArguments(arguments);
 return pageFragment;
 

 @Override
 public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
 @Nullable Bundle savedInstanceState) 
// View view = inflater.inflate(R.layout.activity_main, container, false);
 page = getArguments().getInt("someInt", 0);
 return inflater.inflate(R.layout.activity_main, container, false);
// return view;
 

 @Override
 public void onViewCreated(View view, @Nullable Bundle savedInstanceState) 
 super.onViewCreated(view, savedInstanceState);
 int position = FragmentPagerItem.getPosition(getArguments());
 getItem(position);
 
 public Fragment getItem(int position) 
 switch (position) 
 case 0: // Fragment # 0 - This will show FirstFragment
 return DemoFragment.newInstance(1);
 case 1: // Fragment # 0 - This will show FirstFragment different title
 return DemoFragment.newInstance(2);
 case 2: // Fragment # 1 - This will show SecondFragment
 return DemoFragment.newInstance(3);
 default:
 return null;
 
 

Here is activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/tools"
 android:id="@+id/activity_main"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="@android:color/white">



 <LinearLayout
 android:id="@+id/linear_test"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 tools:ignore="MissingConstraints"
 android:background="@color/colorPrimary"
 android:orientation="horizontal" >



 <com.ogaclejapan.smarttablayout.SmartTabLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 android:id="@+id/viewpagertab"
 android:layout_width="match_parent"
 android:layout_height="@dimen/tab_height_large"
 app:stl_customTabTextLayoutId="@layout/test_layout"
 app:stl_customTabTextViewId="@id/custom_tab_text"
 app:stl_distributeEvenly="true"
 app:stl_defaultTabTextAllCaps="false"
 app:stl_indicatorInterpolation="linear"
 app:stl_defaultTabTextColor="@color/white"
 app:stl_indicatorColor="@color/colorBlue"
 app:stl_underlineColor="@color/colorBlue"
 app:stl_defaultTabBackground="@color/colorPrimary"
 app:stl_indicatorThickness="3dp"
 app:stl_underlineThickness="1dp"
 />

 <android.support.v4.view.ViewPager
 android:id="@+id/viewpager"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:layout_below="@+id/viewpagertab"
 />


 </LinearLayout>


 <android.support.v7.widget.RecyclerView
 android:id="@+id/playlist_recycler"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 app:layout_constraintStart_toStartOf="parent"
 app:layout_constraintTop_toBottomOf="@+id/linear_test" />

 <TextView
 android:id="@+id/dl_params"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_marginStart="10dp"
 android:layout_marginTop="10dp"
 android:visibility="gone"
 android:layout_weight="1"
 tools:ignore="MissingConstraints"/>



</android.support.constraint.ConstraintLayout>

And finally test_layout which one is filling those SmartTabLayout:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 android:id="@+id/tab"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="?attr/selectableItemBackground"
 >

 <android.support.v4.widget.Space
 android:id="@+id/center_anchor"
 android:layout_width="0dp"
 android:layout_height="0dp"
 android:layout_centerInParent="true"
 />

 <aectann.pr1.TintableImageView

 android:id="@+id/custom_tab_icon"
 android:layout_width="24dp"
 android:layout_height="24dp"
 android:layout_above="@id/center_anchor"
 android:layout_centerHorizontal="true"
 android:scaleType="center"
 android:src="@drawable/custom_icon"
 />

 <TextView
 android:id="@+id/custom_tab_text"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_below="@id/center_anchor"
 android:layout_centerHorizontal="true"
 android:layout_marginTop="2dp"
 android:maxLines="1"
 android:textSize="14sp"
 android:textColor="@color/white"
 />


</RelativeLayout>

Any ideas, guys?