在Android中正确实现ViewPager2

在Android中正确实现ViewPager2,android,android-viewpager,android-viewpager2,Android,Android Viewpager,Android Viewpager2,我开始了解并尝试实现它,但没有找到任何合适的示例 有人能告诉我怎么用吗 我在寻找正确的用法,而不是一个例子 在Android中使用ViewPager2 如上所述 API更改 FragmentStateAdapter替换FragmentStatePagerAdapter RecyclerView.适配器取代PagerAdapter registerOnPageChangeCallback替换addPageChangeListener 简单地说,它们使视图寻呼机适配器像循环视图适配器一样工作。 注意

我开始了解并尝试实现它,但没有找到任何合适的示例

有人能告诉我怎么用吗

我在寻找正确的用法,而不是一个例子

在Android中使用ViewPager2

如上所述

API更改

FragmentStateAdapter替换FragmentStatePagerAdapter

RecyclerView.适配器取代PagerAdapter

registerOnPageChangeCallback替换addPageChangeListener

简单地说,它们使视图寻呼机适配器像循环视图适配器一样工作。

注意:-我们不需要在视图寻呼机2中使用片段。它完全依赖于RecyclerView。适配器充气布局

这是gitHub回购协议的示例

例如:-

主课

activity_main.xml

输出:

在Android中使用ViewPager2

如上所述

API更改

FragmentStateAdapter替换FragmentStatePagerAdapter

RecyclerView.适配器取代PagerAdapter

registerOnPageChangeCallback替换addPageChangeListener

简单地说,它们使视图寻呼机适配器像循环视图适配器一样工作。

注意:-我们不需要在视图寻呼机2中使用片段。它完全依赖于RecyclerView。适配器充气布局

这是gitHub回购协议的示例

例如:-

主课

activity_main.xml

输出:

更新7 检查:

检查:

更新6 退房

更新5 如何将TableLayout与ViewPager2一起使用

示例代码

    myViewPager2.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            super.onPageScrolled(position, positionOffset, positionOffsetPixels);
        }

        @Override
        public void onPageSelected(int position) {
            super.onPageSelected(position);

            Log.e("Selected_Page", String.valueOf(position));
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            super.onPageScrollStateChanged(state);
        }
    });
使用下面的依赖项

implementation 'com.google.android.material:material:1.1.0-alpha08'
implementation 'androidx.viewpager2:viewpager2:1.0.0-beta02'
示例代码

    myViewPager2.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            super.onPageScrolled(position, positionOffset, positionOffsetPixels);
        }

        @Override
        public void onPageSelected(int position) {
            super.onPageSelected(position);

            Log.e("Selected_Page", String.valueOf(position));
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            super.onPageScrollStateChanged(state);
        }
    });
XMl布局

输出

来自文档

新功能

  • 从右向左(RTL)布局支持
  • 垂直定向支架
  • notifyDataSetChanged完全功能化
API更改

  • FragmentStateAdapter
    替换
    FragmentStatePagerAdapter
  • RecyclerView.Adapter
    替换
    PagerAdapter
  • registerOnPageChangeCallback
    替换
    addPageChangeListener
示例代码

    myViewPager2.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            super.onPageScrolled(position, positionOffset, positionOffsetPixels);
        }

        @Override
        public void onPageSelected(int position) {
            super.onPageSelected(position);

            Log.e("Selected_Page", String.valueOf(position));
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            super.onPageScrollStateChanged(state);
        }
    });
查看页面2

布局

我们可以使用myViewPager2.setOrientation()设置方向

示例代码

    myViewPager2.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            super.onPageScrolled(position, positionOffset, positionOffsetPixels);
        }

        @Override
        public void onPageSelected(int position) {
            super.onPageSelected(position);

            Log.e("Selected_Page", String.valueOf(position));
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            super.onPageScrollStateChanged(state);
        }
    });
对于
水平方向
使用

myViewPager2.setOrientation(ViewPager2.ORIENTATION_HORIZONTAL);
myViewPager2.setOrientation(ViewPager2.ORIENTATION_VERTICAL);
对于
垂直方向
使用

myViewPager2.setOrientation(ViewPager2.ORIENTATION_HORIZONTAL);
myViewPager2.setOrientation(ViewPager2.ORIENTATION_VERTICAL);
我们可以使用
notifyDataSetChanged
与我们在
RecyclerView.Adapter中使用的相同

添加新项目的示例代码

    btnAdd.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            arrayList.add("New ITEM ADDED");
            MyAdapter.notifyDataSetChanged();
        }
    });
    btnRemove.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            arrayList.remove(3);
            MyAdapter.notifyItemRemoved(3);
        }
    });
删除新项目的示例代码

    btnAdd.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            arrayList.add("New ITEM ADDED");
            MyAdapter.notifyDataSetChanged();
        }
    });
    btnRemove.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            arrayList.remove(3);
            MyAdapter.notifyItemRemoved(3);
        }
    });
更新 如果要将
Fragment
ViewPager2
首先创建一个
ViewPagerFragmentAdapter
类,该类扩展
FragmentStateAdapter

implementation 'com.google.android.material:material:1.1.0-alpha08'
implementation 'androidx.viewpager2:viewpager2:1.0.0-beta02'
有关更多信息,请查看此

更新2

新功能

  • 禁用用户输入的能力(
    setUserInputened
    isUserInputened
API更改

  • ViewPager2
    class-final
错误修复

  • FragmentStateAdapter
    稳定性修复程序
在viewpager2中禁用刷卡的示例代码

myViewPager2.setUserInputEnabled(false);// SAMPLE CODE to disable swiping in viewpager2


myViewPager2.setUserInputEnabled(true);//SAMPLE CODE to enable swiping in viewpager2
更新3

implementation 'com.google.android.material:material:1.1.0-alpha08'
implementation 'androidx.viewpager2:viewpager2:1.0.0-beta02'
新功能

  • 能够以编程方式滚动ViewPage2:fakeDragBy(offsetPx)
API更改

  • FragmentStateAdapter
    现在需要
    生命周期
    对象。添加了两个实用程序构造函数,以从主机
    FragmentActivity
    或主机片段获取它
示例代码

    myViewPager2.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            super.onPageScrolled(position, positionOffset, positionOffsetPixels);
        }

        @Override
        public void onPageSelected(int position) {
            super.onPageSelected(position);

            Log.e("Selected_Page", String.valueOf(position));
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            super.onPageScrollStateChanged(state);
        }
    });
ViewPagerFragmentAdapter

更新4 新功能

  • ItemDecorator
    引入的行为与
    RecyclerView
    一致
  • 引入了
    MarginPageTransformer
    以提供在页面之间创建空间的功能(页面插入外部)
  • CompositePageTransformer
    引入,提供组合多个
    PageTransformer
API更改

  • FragmentStateAdapter#getItem
    方法重命名为
    FragmentStateAdapter#createFragment
    ——以前的方法名称被证明是错误的来源
  • OFFSCREEN\u PAGE\u LIMIT\u DEFAULT
    值从0更改为-1。如果使用了
    屏幕外\u页面\u限制\u默认常量
    ,则无需更改客户端代码
示例代码

    myViewPager2.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            super.onPageScrolled(position, positionOffset, positionOffsetPixels);
        }

        @Override
        public void onPageSelected(int position) {
            super.onPageSelected(position);

            Log.e("Selected_Page", String.valueOf(position));
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            super.onPageScrollStateChanged(state);
        }
    });
活动代码

import androidx.annotation.NonNull;
导入androidx.annotation.Nullable;
导入androidx.appcompat.app.appcompat活动;
导入androidx.fragment.app.fragment;
导入androidx.recyclerview.widget.recyclerview;
导入androidx.viewpager2.widget.MarginPageTransformer;
导入androidx.viewpager2.widget.viewpager2;
进口neel.com.bottomappbar.R;
公共类MainActivity扩展了AppCompatActivity{
ViewPager2 myViewPager2;
ViewPagerFragmentAdapter myAdapter;
私有ArrayList ArrayList=新ArrayList();
@凌驾
创建时受保护的void(@Nullable Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myViewPager2=findViewById(R.id.myViewPager2);
//在ViewPagerFragmentAdapter类中添加片段
add(newfragmentone());
add(newfragmenttwo());
add(newfragmentThree());
myAdapter=new ViewPagerFragmentAdapter(GetSupportFragmentManager
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager2.widget.ViewPager2;
import neel.com.bottomappbar.R;

public class MainActivity extends AppCompatActivity {

    ViewPager2 myViewPager2;
    ViewPagerFragmentAdapter myAdapter;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        myViewPager2 = findViewById(R.id.view_pager);

        myAdapter = new ViewPagerFragmentAdapter(getSupportFragmentManager());

        // add Fragments in your ViewPagerFragmentAdapter class
        myAdapter.addFragment(new FragmentOne());
        myAdapter.addFragment(new Fragmenttwo());
        myAdapter.addFragment(new FragmentThree());

        // set Orientation in your ViewPager2
        myViewPager2.setOrientation(ViewPager2.ORIENTATION_VERTICAL);

        myViewPager2.setAdapter(myAdapter);

    }

}
myViewPager2.setUserInputEnabled(false);// SAMPLE CODE to disable swiping in viewpager2


myViewPager2.setUserInputEnabled(true);//SAMPLE CODE to enable swiping in viewpager2
import java.util.ArrayList;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.lifecycle.Lifecycle;
import androidx.viewpager2.adapter.FragmentStateAdapter;

public class ViewPagerFragmentAdapter extends FragmentStateAdapter {

    private ArrayList<Fragment> arrayList = new ArrayList<>();


    public ViewPagerFragmentAdapter(@NonNull FragmentManager fragmentManager, @NonNull Lifecycle lifecycle) {
        super(fragmentManager, lifecycle);
    }

    @NonNull
    @Override
    public Fragment getItem(int position) {
        return arrayList.get(position);
    }

    public void addFragment(Fragment fragment) {
        arrayList.add(fragment);
    }

    @Override
    public int getItemCount() {
        return arrayList.size();
    }
}
import android.os.Bundle;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager2.widget.ViewPager2;
import neel.com.bottomappbar.R;

public class MainActivity extends AppCompatActivity {

    ViewPager2 myViewPager2;
    ViewPagerFragmentAdapter myAdapter;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        myViewPager2=findViewById(R.id.view_pager);
        myAdapter = new ViewPagerFragmentAdapter(getSupportFragmentManager(), getLifecycle());

        // add Fragments in your ViewPagerFragmentAdapter class
        myAdapter.addFragment(new FragmentOne());
        myAdapter.addFragment(new Fragmenttwo());
        myAdapter.addFragment(new FragmentThree());

        myViewPager2.setOrientation(ViewPager2.ORIENTATION_VERTICAL);

        myViewPager2.setAdapter(myAdapter);
    }
}
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewpager2.widget.MarginPageTransformer;
import androidx.viewpager2.widget.ViewPager2;
import neel.com.bottomappbar.R;

public class MainActivity extends AppCompatActivity {

    ViewPager2 myViewPager2;
    ViewPagerFragmentAdapter myAdapter;
    private ArrayList<Fragment> arrayList = new ArrayList<>();

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        myViewPager2 = findViewById(R.id.myViewPager2);

        // add Fragments in your ViewPagerFragmentAdapter class
        arrayList.add(new FragmentOne());
        arrayList.add(new Fragmenttwo());
        arrayList.add(new FragmentThree());

        myAdapter = new ViewPagerFragmentAdapter(getSupportFragmentManager(), getLifecycle());
        // set Orientation in your ViewPager2
        myViewPager2.setOrientation(ViewPager2.ORIENTATION_HORIZONTAL);

        myViewPager2.setAdapter(myAdapter);

        myViewPager2.setPageTransformer(new MarginPageTransformer(1500));


    }
}
import java.util.ArrayList;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.lifecycle.Lifecycle;
import androidx.viewpager2.adapter.FragmentStateAdapter;

public class ViewPagerFragmentAdapter extends FragmentStateAdapter {

    private ArrayList<Fragment> arrayList = new ArrayList<>();


    public ViewPagerFragmentAdapter(@NonNull FragmentManager fragmentManager, @NonNull Lifecycle lifecycle) {
        super(fragmentManager, lifecycle);
    }

    @NonNull
    @Override
    public Fragment createFragment(int position) {
        switch (position) {
            case 0:
                return new FragmentOne();
            case 1:
                return new Fragmenttwo();
            case 2:
                return new FragmentThree();

        }
        return null;
    }

    @Override
    public int getItemCount() {
        return 3;
    }
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".MainActivity">

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/pager2_container"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

</LinearLayout>
class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)


        val viewPager2 = findViewById<ViewPager2>(R.id.pager2_container)

        val fragmentList = arrayListOf(
            FirstFragment.newInstance(),
            SecondFragment.newInstance(),
            ThirdFragment.newInstance()
        )
        viewPager2.adapter = ViewPagerAdapter(this, fragmentList)
   }
}
class FirstFragment : Fragment() {

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_first, container, false)
    }

    companion object{
        fun newInstance() = FirstFragment()
    }
}
class ViewPagerAdapter(fa:FragmentActivity, private val fragments:ArrayList<Fragment>): FragmentStateAdapter(fa) {

    override fun getItemCount(): Int = fragments.size

    override fun createFragment(position: Int): Fragment = fragments[position]

}
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation('com.crashlytics.sdk.android:crashlytics:2.10.1@aar') { transitive = true; }
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.google.android.material:material:1.1.0-beta01'
    implementation 'org.altbeacon:android-beacon-library:2.16.3'
    implementation 'androidx.localbroadcastmanager:localbroadcastmanager:1.0.0'
    implementation 'androidx.viewpager2:viewpager2:1.0.0-beta05'

    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
    implementation "androidx.core:core-ktx:+"
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}
import android.os.Bundle;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.viewpager2.widget.ViewPager2;

import java.util.ArrayList;
import java.util.List;

import com.myproject.android.R;
import com.myproject.android.adapter.CustomFragmentStateAdapter;
import com.myproject.android.ui.fragment.BluetoothPageFragment;
import com.myproject.android.ui.fragment.QrPageFragment;

public class QRBluetoothSwipeActivity extends AppCompatActivity {
    private ViewPager2 myViewPager2;
    private CustomFragmentStateAdapter myAdapter;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        // Make sure this is before calling super.onCreate
        setTheme(R.style.AppTheme); // show splash screen
        super.onCreate(savedInstanceState);
        setContentView(R.layout.qr_bluetooth_swipe_activity);
        init();
    }

    private void init() {
        List<Fragment> fragmentList = new ArrayList<Fragment>();
        QrPageFragment m1 = new QrPageFragment();
        BluetoothPageFragment m2 = new BluetoothPageFragment();
        myViewPager2 = findViewById(R.id.viewPager2);
        fragmentList.add(m2);
        fragmentList.add(m1);
        myAdapter = new CustomFragmentStateAdapter(this, fragmentList);
        myViewPager2.setAdapter(myAdapter);
    }
}
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ui.actviity.SplashDelayActivity">

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/viewPager2"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</androidx.constraintlayout.widget.ConstraintLayout>
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;
import androidx.viewpager2.adapter.FragmentStateAdapter;

import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.List;

public class CustomFragmentStateAdapter extends FragmentStateAdapter {
    private List<Fragment> listFragment = new ArrayList<>();

    public CustomFragmentStateAdapter(FragmentActivity fa, List<Fragment> list) {
        super(fa);
        listFragment = list;
    }

    @NotNull
    @Override
    public Fragment createFragment(int position) {
        return listFragment.get(position);
    }

    @Override
    public int getItemCount() {
        return 2;
    }
}
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

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

import com.myproject.android.R;

public class BluetoothPageFragment extends Fragment {

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

}
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

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

import com.myproject.android.R;

public class QrPageFragment extends Fragment {

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

}
public class CustomFragmentStateAdapter extends FragmentStateAdapter {
    private ArrayList<Fragment> arrayList = new ArrayList<>();

    public CustomFragmentStateAdapter (FragmentActivity fa) {
        super(fa);
    }

    public void addFragment(Fragment fragment) {
        arrayList.add(fragment);
    }

    @Override
    public int getItemCount() {
        return arrayList.size();
    }

    @NonNull
    @Override
    public Fragment createFragment(int position) {
        // return your fragment that corresponds to this 'position'
        return arrayList.get(position);
    }
}
 myViewPager2 = findViewById(R.id.viewPager2);
        myAdapter = new CustomFragmentStateAdapter (this);
        myAdapter.addFragment(new QrPageFragment());
        myAdapter.addFragment(new BluetoothPageFragment());
        myViewPager2.setAdapter(myAdapter);
 <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="vertical"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/include3">

        <com.google.android.material.tabs.TabLayout
            android:id="@+id/tab_layout"
            android:layout_width="match_parent"
            android:background="@color/colorPrimary"
            app:tabTextColor="@color/tab_dismiss_color"
            app:tabSelectedTextColor="@color/green"
            android:layout_height="wrap_content" />

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:layout_gravity="bottom"
            android:background="#e4e4e4" />

        <androidx.viewpager2.widget.ViewPager2
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1" />
    </LinearLayout>
 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_report);
        ButterKnife.bind(this);
        actionBarTitleId.setText(R.string.reports);

        viewPager.setAdapter(new ViewPagerAdapter(this));

        new TabLayoutMediator(tabLayout, viewPager, (tab, position) -> {
            switch (position) {
                case 0:
                    tab.setText(R.string.financial_duty_str);
                    break;
                case 1:
                    tab.setText(R.string.financial_unpaid_str);
                    break;
                case 2:
                    tab.setText(R.string.financial_paid_str);
                    break;

            }
        }).attach();

    }
public class ViewPagerAdapter extends FragmentStateAdapter {


    public ViewPagerAdapter(@NonNull FragmentActivity fragmentActivity) {
        super(fragmentActivity);
    }

    @NonNull
    @Override
    public Fragment createFragment(int position) {
        switch (position) {
            case 0:
                return new FinancialFragment();
            case 1:
                return new FinancialUnPaidFragment();
            case 2:
                return new FinancialPaidFragment();
            default:
                return null;

        }
    }

    @Override
    public int getItemCount() {
        return 3;
    }
implementation "androidx.viewpager2:viewpager2:1.0.0"
implementation 'com.google.android.material:material:1.1.0-alpha10'
public FragmentStateAdapter(@NonNull Fragment fragment) {
    this(fragment.getChildFragmentManager(), fragment.getLifecycle());
}
 class NavigableFragmentStateAdapter(
    fragmentManager: FragmentManager,
    lifecycle: Lifecycle
) : FragmentStateAdapter(fragmentManager, lifecycle) {


}
viewPager.adapter =
            NavigableFragmentStateAdapter(childFragmentManager, viewLifecycleOwner.lifecycle)
TabLayoutMediator(tabLayout, viewPager2, tabConfigurationStrategy).detach()     
viewPager2.adapter = null
private val fragmentTransactionCallback =
    object : FragmentStateAdapter.FragmentTransactionCallback() {
        override fun onFragmentMaxLifecyclePreUpdated(
            fragment: Fragment,
            maxLifecycleState: Lifecycle.State
        ) = if (maxLifecycleState == Lifecycle.State.RESUMED) {

            // This fragment is becoming the active Fragment - set it to
            // the primary navigation fragment in the OnPostEventListener
            OnPostEventListener {
                fragment.parentFragmentManager.commitNow {
                    setPrimaryNavigationFragment(fragment)
                }
            }
        } else {
            super.onFragmentMaxLifecyclePreUpdated(fragment, maxLifecycleState)
        }
    }

init {
    // Add a FragmentTransactionCallback to handle changing
    // the primary navigation fragment
    registerFragmentTransactionCallback(fragmentTransactionCallback)
}
typealias FragmentBuilder = () -> Fragment

class MyAdapter(
    fragmentManager: FragmentManager, 
    lifecycle: Lifecycle
) : FragmentStateAdapter(fragmentManager, lifecycle) {

    private val fragmentBuilders = mutableListOf<FragmentBuilder>()

    fun add(fragmentBuilder: FragmentBuilder) {
        fragmentBuilders.add(fragmentBuilder)
    }

    /**
     * Dynamic replacement of fragments
     */
    fun set(position: Int, fragmentBuilder: FragmentBuilder) {
        fragmentBuilders[position] = fragmentBuilder
    }

    override fun getItemCount() = fragmentBuilders.size

    override fun createFragment(position: Int) = fragmentBuilders[position].invoke()

}
<androidx.constraintlayout.widget.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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".presentation.recipeitem.RecipeDetailsFragment">


    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/viewPager2"
        android:layout_width="0dp"
        android:layout_height="300dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@tools:sample/avatars" />
...
private val viewModel: RecipeItemViewModel by viewModels()
private val viewBinding: FragmentRecipeDetailsBinding by viewBinding()

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    bindRecipeData(//object of data that is to be desplayed)
}

private fun bindRecipeData(recipeDetailedInfo: RecipeDetailedInfo?) {
    recipeDetailedInfo?.let {
        with(viewBinding) {
            viewPager2.adapter = ViewPagerAdapter(it.images)
            viewPager2.setPageTransformer(ZoomOutPageTransformer())
            lifecycleScope.launchWhenCreated {
                delay(500)
                viewPager2.setCurrentItem(if (it.images.size >= 2) 1 else 0, true)
            }
        }
    }
}....
import android.view.LayoutInflater
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import com.blogspot.soyamr.recipes2.databinding.ImageviewBinding
import com.squareup.picasso.Picasso

class ViewPagerAdapter(private val images: List<String>) :
    RecyclerView.Adapter<ViewPagerAdapter.ImageViewHolder>() {


    class ImageViewHolder(private val imageViewBinding: ImageviewBinding) :
        RecyclerView.ViewHolder(imageViewBinding.root) {
        fun bind(imageLink: String) {
            Picasso.get().load(imageLink).into(imageViewBinding.root)
        }

        companion object {
            fun from(parent: ViewGroup): ImageViewHolder {
                val itemBinding =
                    ImageviewBinding.inflate(LayoutInflater.from(parent.context), parent, false)
                return ImageViewHolder(itemBinding)
            }
        }
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ImageViewHolder {
        return ImageViewHolder.from(parent)
    }

    override fun onBindViewHolder(holder: ImageViewHolder, position: Int) {
        holder.bind(images[position])
    }

    override fun getItemCount(): Int = images.size

}
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.imageview.ShapeableImageView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:scaleType="centerCrop"
    android:theme="@style/roundedImageView"
    />