Android support library View Pages: Use Guide

Android support library ViewPager: Use Guide The ViewPager in the Android support library is a powerful control that can achieve a slippery page layout in the application.It allows users to browse different pages by sliding screens, such as pictures, texts, lists, and so on. In this guide, we will discuss how to use the ViewPager control in the Android support library and provide some Java code examples to help you better understand. Step 1: Import support library To use ViewPager, you need to introduce support libraries in your Android project.Please add the following dependencies to the project's Build.gradle file: implementation 'com.android.support:support-v4:28.0.0' Then add the ViewPager control to your layout file: <android.support.v4.view.ViewPager android:id="@+id/viewPager" android:layout_width="match_parent" android:layout_height="match_parent" /> Step 2: Create page surface adapter To use ViewPager, you need to create a page adapter to provide the content of the page.The adapter is responsible for associating the data with the layout of each page. public class MyPagerAdapter extends FragmentPagerAdapter { private List<Fragment> fragmentList; public MyPagerAdapter(FragmentManager fm, List<Fragment> fragmentList) { super(fm); this.fragmentList = fragmentList; } @Override public Fragment getItem(int position) { return fragmentList.get(position); } @Override public int getCount() { return fragmentList.size(); } } Step 3: Create page fragments Each page should be a page fragment, and can be defined with various layouts and content.For example, you can create a simple page fragment with a picture and a text. public class MyFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_layout, container, false); ImageView imageView = view.findViewById(R.id.imageView); TextView textView = view.findViewById(R.id.textView); // Set pictures and text content return view; } } Step 4: Initialize ViewPager In your activity, you need to initialize ViewPager and associate with the adapter. ViewPager viewPager = findViewById(R.id.viewPager); MyPagerAdapter pagerAdapter = new MyPagerAdapter(getSupportFragmentManager(), fragmentList); viewPager.setAdapter(pagerAdapter); Step 5: Process page switching events (optional) You can set a page to switch the monitor for ViewPager to perform certain operations when the user slides the page. viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { // Page is called when rolling } @Override public void onPageSelected(int position) { // Page when selected when selecting } @Override public void onPageScrollStateChanged(int state) { // Page rolling state changes when changing } }); The above is the basic guide and example code of the ViewPager control in the Android support library.You can expand these examples according to your needs to create more complex page layouts. I hope this guide will help you!