implementation 'com.android.support:support-v4:28.0.0'
<android.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
ViewPager viewPager = findViewById(R.id.viewPager);
PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(pagerAdapter);
public class PagerAdapter extends FragmentStatePagerAdapter {
private static final int NUM_PAGES = 3;
public PagerAdapter(FragmentManager fragmentManager) {
super(fragmentManager);
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new Fragment1();
case 1:
return new Fragment2();
case 2:
return new Fragment3();
default:
return null;
}
}
@Override
public int getCount() {
return NUM_PAGES;
}
}
