Java 带有AppCompativeAndroid的PreferenceFragment

我正在尝试使用选项卡创建Preferencefragment或PreferenceActivity。实际上我做不到，我的代码只是： 主要活动

public class MainActivity extends AppCompatActivity {

    private ViewPagerAdapter mSectionsPagerAdapter;
    private ViewPager viewPager;

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

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        mSectionsPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());

        viewPager = (ViewPager) findViewById(R.id.container);
        setupViewPager(viewPager);

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
        tabLayout.setupWithViewPager(viewPager);

    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

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

        return super.onOptionsItemSelected(item);
    }

    private void setupViewPager(ViewPager viewPager) {
        ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
        adapter.addFragment(new FirstFragment(), "ONE");
        adapter.addFragment(new SecondFragment(), "TWO");
        adapter.addFragment(new ThirdFragment(), "THREE");
        viewPager.setAdapter(adapter);
    }

    class ViewPagerAdapter extends FragmentPagerAdapter {
        private final List<Fragment> mFragmentList = new ArrayList<>();
        private final List<String> mFragmentTitleList = new ArrayList<>();

        public ViewPagerAdapter(FragmentManager manager) {
            super(manager);
        }

        @Override
        public Fragment getItem(int position) {
            return mFragmentList.get(position);
        }

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

        public void addFragment(Fragment fragment, String title) {
            mFragmentList.add(fragment);
            mFragmentTitleList.add(title);
        }

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

正如你所看到的，它是空的。现在，我需要用preferencefragment替换片段。但我不明白如何用标签实现它们。我该怎么做呢？

不久前，这是因为首选项片段与支持库不兼容。有了最新版本的SupportV7库，我们现在有了这个类，它将在AppCompativeActivity中工作，也将与您的ViewPager和FragmentPagerAdapter一起工作

由于您将支持库片段与android.support.v4.app.FragmentPagerAdapter一起使用，因此这是当前配置的唯一选项。 请注意，可以使用带有非支持片段的TabLayout，但是您必须使用

android.support.v13.app.FragmentPagerAdapter

类，该类允许使用非支持片段

因此，要保持当前配置并使其正常工作，请使您的PreferenceFragment扩展PreferenceFragmentCompat：

import android.os.Bundle; 
import android.support.v7.preference.PreferenceFragmentCompat; 
import android.view.View; 

public class MySettingsPrefFragment extends PreferenceFragmentCompat { 

    public MySettingsPrefFragment() { 
        // Required empty public constructor 
    } 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        addPreferencesFromResource(R.xml.fragment_settings_pref); 
    } 

    @Override 
    public void onCreatePreferences(Bundle bundle, String s) { 

    } 
}

添加与您的首选项片段对应的新选项卡：

private void setupViewPager(ViewPager viewPager) {
    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
    adapter.addFragment(new FirstFragment(), "ONE");
    adapter.addFragment(new SecondFragment(), "TWO");
    adapter.addFragment(new ThirdFragment(), "THREE");
    adapter.addFragment(new MySettingsPrefFragment(), "SETTINGS"); //added
    viewPager.setAdapter(adapter);
}

---

而且，应该是这样

很好的解释，下班后我会试试。无论如何谢谢你！我会尽快接受答案possibile@End.Game它有用吗？它需要编译SDK 23吗？我试图同时使用片段活动和首选项片段，但当从片段首选项返回到片段活动时，应用程序崩溃。这种组合可行吗？你能指引我吗。

private void setupViewPager(ViewPager viewPager) {
    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
    adapter.addFragment(new FirstFragment(), "ONE");
    adapter.addFragment(new SecondFragment(), "TWO");
    adapter.addFragment(new ThirdFragment(), "THREE");
    adapter.addFragment(new MySettingsPrefFragment(), "SETTINGS"); //added
    viewPager.setAdapter(adapter);
}