当使用WearableActivity时，您无法达到FragmentPagerAdapter所需的getSupportFragmentManager()，因此您需要使用getFragmentManager()。
活动

public MyWearActivity extends WearableActivity {

    public ArrayList<Fragment> mFragments;
    public ArrayList<String> mTitles;
    public ViewPager mViewPager;
    public PageFragmentPagerAdapter mPagerAdapter;

    @Override
    public void onCreate(Bundle b) {
        super.onCreate(b);
        setContentView(R.layout.main);
        fragments = new ArrayList<>();
        mTitles = new ArrayList<>();
        mViewPager = (ViewPager) findViewById(R.id.viewpager);

mPagerAdapter = new PageFragmentPagerAdapter(getFragmentManager()); <-- PROBLEM

// More code
    }
}

寻呼机适配器

public class PageFragmentPagerAdapter extends FragmentPagerAdapter {

    public PageFragmentPagerAdapter(FragmentManager fm) {

super(fm); <-- PROBLEM

}

    @Override
    public int getCount() {
        return mFragments.size();
    }

    @Override
    public PageFragment getItem(int position) {
        return mFragments.get(position);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return mTitles.get(position);
    }
}

如何在WearableActivity中使用FragmentPagerAdapter？