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我正在关注此链接以使用 Pager 标题条创建 viewPager，但在运行应用程序时它从不显示选项卡中的内容，在更改为寻呼机选项卡条时它显示内容但仅在滑动之后。我做错了什么？这是 MainActivity.java

public class HomeActivity extends FragmentActivity {

HomePagerAdapter mHomePagerAdapter;
ViewPager mViewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home);
    // ViewPager and its adapters use support library
    // fragments, so use getSupportFragmentManager.
    mHomePagerAdapter =
            new HomePagerAdapter(
                    getSupportFragmentManager());
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mHomePagerAdapter);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_home, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}
public static class HomePagerAdapter extends FragmentStatePagerAdapter {
    public HomePagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int i) {
        Fragment fragment = new HomeObjectFragment();
        Bundle args = new Bundle();
        // Our object is just an integer :-P
        args.putInt(HomeObjectFragment.ARG_OBJECT, i + 1);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public int getCount() {
        return 3;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        switch (position) {
            case 0:
                return "Object " + position+1;
            case 1:
                return "Object " + position+1;
            case 2:
                return "Object " + position+1;
        }
        return null;
    }
}
}

这是带有寻呼机和tabStrip的xml文件

<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.v4.view.PagerTabStrip
    android:id="@+id/pager_tab_strip"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="top"
    android:background="#33b5e5"
    android:textColor="#fff"
    android:paddingTop="4dp"
    android:paddingBottom="4dp" />

提前致谢！

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