java - 标题不显示在 SlidingTabLayout 中

Question

我尝试在我的应用程序中实现 SlidingTabLayout。遗憾的是它没有在滑动选项卡中显示标题。我需要在选项卡中显示我的 Activity 的标题(稍后在图标中)。我可以知道该怎么做吗？我对 Android 编程很陌生。这是我的代码:

MainMenuActivity.java

import com.example.android.common.view.SlidingTabLayout;

import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.Toolbar;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

public class MainMenuActivity extends ActionBarActivity {

    private PagerAdapter mPagerAdapter;
    private SlidingTabLayout mSlidingTabLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.viewpager_layout);

        Toolbar toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
        if (toolbar != null) {
            setSupportActionBar(toolbar);
        }

        List<Fragment> fragments = new Vector<Fragment>();
        fragments.add(Fragment.instantiate(this,EducationActivity.class.getName()));
        fragments.add(Fragment.instantiate(this,EducationActivity.class.getName()));

        mPagerAdapter = new PagerAdapter(this.getSupportFragmentManager(), fragments);
        ViewPager pager = (ViewPager) findViewById(R.id.viewpager);     
        pager.setAdapter(mPagerAdapter);
        mSlidingTabLayout = (SlidingTabLayout) findViewById(R.id.sliding_tabs);
        mSlidingTabLayout.setViewPager(pager);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main_menu, 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();
        if (id == R.id.action_settings) {
            return true;
        }
        else if (id == R.id.action_disclaimer) {
            Intent intent = new Intent(this, DisclaimerActivity.class);
            startActivity(intent);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

PagerAdapter.java

import java.util.List;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

public class PagerAdapter extends FragmentPagerAdapter {

    private List<Fragment> fragments;

    public PagerAdapter(FragmentManager fm, List<Fragment> fragments) {
        super(fm);
        // TODO Auto-generated constructor stub
        this.fragments = fragments;
    }

    @Override
    public Fragment getItem(int arg0) {
        // TODO Auto-generated method stub

        return this.fragments.get(arg0);
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return this.fragments.size();
    }

}

教育 Activity .java

public class EducationActivity extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub

        View v = inflater.inflate(R.layout.activity_education,
                container,false);

        Button btn_warfarin = (Button)v.findViewById(R.id.btn_warfarin);
        btn_warfarin.setOnClickListener(new OnClickListener()
        {
             public void onClick(View v)
             {
                Intent intent = new Intent(getActivity(), WarfarinInfoActivity.class);
                startActivity(intent);

             } 

        });     
}

我已经阅读了 http://developer.android.com/ 中的 SlidingTabsBasicFragment.java但我不太明白。希望有人能指导我。谢谢。

Answer 1

你错过了

@Override
public CharSequence getPageTitle(int position) {

    return myStringArrayOfTabs[position];
}

从您的适配器中，根据需要填写标题。