如果要重新创建单个特定的片段,可以按照以下步骤进行操作:
public class MyPagerAdapter extends FragmentStatePagerAdapter {
private List fragments;
private List fragmentTags;
public MyPagerAdapter(FragmentManager fm,List fragments) {
super(fm);
this.fragments = fragments;
fragmentTags = new ArrayList<>();
}
@Override
public Fragment getItem(int position) {
return fragments.get(position);
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
Fragment fragment = (Fragment) super.instantiateItem(container, position);
String tag = fragment.getTag();
fragmentTags.add(position, tag);
return fragment;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
super.destroyItem(container, position, object);
fragmentTags.remove(position);
}
public String getFragmentTag(int position) {
return fragmentTags.get(position);
}
@Override
public int getCount() {
return fragments.size();
}
}
MyPagerAdapter adapter = (MyPagerAdapter) viewPager.getAdapter();
String fragmentTag = adapter.getFragmentTag(position);
Fragment fragment = fragmentManager.findFragmentByTag(fragmentTag);
if (fragment != null) {
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.remove(fragment);
fragmentTransaction.commit();
// 创建新的片段实例
fragment = new YourFragment();
fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.container, fragment, fragmentTag);
fragmentTransaction.commit();
}
这样就能重新创建单个特定的片段了。注意,上述代码中的"YourFragment"指的是您自己的片段类名,"R.id.container"指的是片段的容器。您需要根据自己的代码进行相应的修改。