What I did

Made a class CustomViewPager that makes swipe disable. However I can't use it correctly with using androidx.viewpager.widget.ViewPager.　Display about ViewPager disappeared.

Code

AdapterViewPager.cs

using System.Collections.Generic;
using Android.Content;
using Android.Util;
using Android.Views;
using AndroidX.Fragment.App;
using AndroidX.ViewPager.Widget;
using Fragment = AndroidX.Fragment.App.Fragment;

namespace Android
{
//NuGet
//ViewPageAdapter
//lifecycle
public class VPAdapter : FragmentStatePagerAdapter
{
    private bool m_enabled;

    List<Fragment> fragments = new List<Fragment>();
    List<string> fragmentsName = new List<string>();

    public VPAdapter(AndroidX.Fragment.App.FragmentManager fragmentManager) : base(fragmentManager)
    {
        fragments = new List<Fragment>();
        fragmentsName = new List<string>();
    }

    public void AddFragment(Fragment fragment, string name)
    {
        fragments.Add(fragment);
        fragmentsName.Add(name);
    }

    public override int Count
    {
        get
        {
            return fragments.Count;
        }

    }

    public override Fragment GetItem(int position)
    {
        return fragments[position];
    }

    public void SetPagingEnabled(bool enabled)
    {
        m_enabled = enabled;
    }
}

public class CustomViewPager : ViewPager
{
    public bool ScrollEnabled;

    public CustomViewPager(Context context, IAttributeSet attrs) : base(context, attrs)
    {
        this.ScrollEnabled = false;
    }

    public override bool OnTouchEvent(MotionEvent e)
    {
        if (this.ScrollEnabled)
        {
            return base.OnTouchEvent(e);
        }
        return false;
    }

    public override bool OnInterceptTouchEvent(MotionEvent e)
    {
        if (this.ScrollEnabled)
        {
            return base.OnInterceptTouchEvent(e);
        }
        return false;
    }
    public void SetPagingEnabled(bool enabled)
    {
        ScrollEnabled = enabled;
    }
}

}

ActivityMain.cs

//ViewPager
VPAdapter vpAdapter = new VPAdapter(SupportFragmentManager);
//omission
viewPager.Adapter = vpAdapter;

//CustomViewpager
private IAttributeSet attrs;
CustomViewPager customViewPager2 = new CustomViewPager(this, attrs);
customViewPager2.SetPagingEnabled(false);

activity_main.xml

                <Android.CustomViewPager
                 android:id="@ id/customViewPager" 
                 android:layout_width="match_parent"
                 android:layout_height="match_parent">
                    <androidx.viewpager.widget.ViewPager
                    android:id="@ id/viewPager"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    app:layout_constraintBottom_toTopOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="parent">
                    </androidx.viewpager.widget.ViewPager>
                </SMP_Android.CustomViewPager>

Reference destination

Is there a way to disable the swiping between Tabbed Page on Android in Xamarin Native android?

How do disable paging by swiping with finger in ViewPager but still be able to swipe programmatically?

CodePudding user response：

You should just replace standard ViewPager with your custom one. No need to put the standard one inside the custom. That's all you need:

<SMP_Android.CustomViewPager
    android:id="@ id/viewPager" 
    android:layout_width="match_parent"
    android:layout_height="match_parent" />