Calendar does not appear

I followed all instructions but for some reason the calendar does not show. What could I be doing wrong?

`<androidx.constraintlayout.widget.ConstraintLayout xmlns:android=“http://schemas.android.com/apk/res/android” xmlns:tools=“http://schemas.android.com/tools” android:layout_width=“match_parent” android:layout_height=“match_parent” xmlns:app=“http://schemas.android.com/apk/res-auto”>

<com.kizitonwose.calendarview.CalendarView
        android:id="@+id/calendarView"
        android:layout_width="200dp"
        android:layout_height="200dp"
        app:cv_dayViewResource="@layout/calendar_day_layout"
        android:layout_centerInParent="true"
         />

</androidx.constraintlayout.widget.ConstraintLayout>`

[kizitonwose]

@mkieczko96 You did not setup View binding properly in your initial example.

From the code you shared:

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        binding = FragmentWelcomeBinding.inflate(getLayoutInflater());
        calendarView = binding.calendarView;
}

The above code creates a view binding but in the onCreateView, you return a completely different view.

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_welcome, container, false);
}

---

This is how to use ViewBinding:

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        binding = FragmentWelcomeBinding.inflate(getLayoutInflater());
        return binding.getRoot();
}

public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
		// Use the binding here, you can also use it directly in onCreateView above.
		// binding.calendarView.........
    }

[mkieczko96]

I found it!

It looks like ViewContainer doesn’t like viewBinding. When I changed my WelcomeFragment.java class to look as follows, it started working:

package com.booker.ui.fragment;

import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

import com.booker.R;
import com.kizitonwose.calendarview.CalendarView;
import com.kizitonwose.calendarview.model.CalendarDay;
import com.kizitonwose.calendarview.ui.DayBinder;
import com.kizitonwose.calendarview.ui.ViewContainer;

import org.jetbrains.annotations.NotNull;

import java.time.DayOfWeek;
import java.time.YearMonth;

public class WelcomeFragment extends Fragment {

    public WelcomeFragment() {
    }

    public static WelcomeFragment newInstance() {
        return new WelcomeFragment();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        class DayViewContainer extends ViewContainer {

            final TextView calendarDay;

            public DayViewContainer(@NotNull View view) {
                super(view);
                calendarDay = view.findViewById(R.id.calendar_day);
            }
        }

        CalendarView calendarView = view.findViewById(R.id.calendar_view);

        calendarView.setDayBinder(new DayBinder<DayViewContainer>() {
            @NotNull
            @Override
            public DayViewContainer create(@NotNull View view) {
                return new DayViewContainer(view);
            }

            @Override
            public void bind(@NotNull DayViewContainer container, @NotNull CalendarDay day) {
                container.calendarDay.setText(String.valueOf(day.getDay()));
            }
        });

        calendarView.setup(
                YearMonth.of(2020, 1),
                YearMonth.of(2022, 12),
                DayOfWeek.MONDAY
        );

        calendarView.scrollToMonth(YearMonth.now());
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_welcome, container, false);
    }
}

As you can see, I have resigned from using ViewBindings, there are some minor changes also, but I’ve checked them with no luck. As a prove: