FragmentPagerAdapter 中未调用 getPageTitle

Question

我有一个 FragmentPagerAdapter 来处理获取当前片段、跟踪选项卡的数量并为每个选项卡设置选项卡标题。

public class ClothingSectionsPagerAdapter extends FragmentPagerAdapter {

    private String[] mCategories;

    public ClothingSectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    public void setContext(Context context) {
        mCategories = context.getResources().getStringArray(R.array.category);
    }

    @Override
    public Fragment getItem(int position) {
        return ClothingCategoryFragment.newInstance(mCategories[position]);
    }

    @Override
    public int getCount() {
        return mCategories.length;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        Log.d("getPageTitle", mCategories[position]);
        return mCategories[position];
    }
}

在我的 activity 中，我这样实现 class。

ClothingSectionsPagerAdapter sectionsPagerAdapter =
                new ClothingSectionsPagerAdapter(getSupportFragmentManager());

sectionsPagerAdapter.setContext(this);
mViewPager.setAdapter(sectionsPagerAdapter);
mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(mTabLayout));
mTabLayout.addOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager));
mViewPager.setCurrentItem(startingFragmentPosition);

但是当我运行我的应用程序。选项卡存在，但它们是 title-less。 getPageTitle 方法永远不会被调用。我该如何解决这个问题？

Answer 1

试试这个

mTabLayout.setupWithViewPager(mViewPager);

FragmentPagerAdapter 中未调用 getPageTitle

getPageTitle not being called in FragmentPagerAdapter

java

android

android-tablayout

fragmentpageradapter