Android 使用片段进行选项卡布局，如何使用它们？

我正在使用片段获取我的应用程序上的标签样式，如下图所示：

已经推断出每个选项卡都是一个片段，每个选项卡都有一个布局，但我无法在每个选项卡上显示我想要的内容。 在使用片段之前，我有一个简单的活动来在listview上显示数据库中的数据，但现在我无法让它处理其中一个片段，我使用了以下代码：

dal = new DAL(TabListas.this);
        dal.connect(DBAccessMode.READ);

        Cursor cursor = dal.selectALLFromRegSintomas();

        // Find ListView to populate
        ListView lvItems = (ListView) findViewById(R.id.listv);
        // Setup cursor adapter using cursor from last step
        RegistosCursorAdapter todoAdapter = new RegistosCursorAdapter(TabListas.this, cursor, 0);
        // Attach cursor adapter to the ListView
        lvItems.setAdapter(todoAdapter);

如何使用片段在一个片段中显示listview中db中的数据？我应该换什么？

---

VerRegsSintomas.java（类似mainactivity.java）：

    package com.example.bugdroid.menuexe.Activities;

import android.app.Activity;
import android.database.Cursor;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.widget.ListView;

import com.example.bugdroid.menuexe.CursorAdapter.RegistosCursorAdapter;
import com.example.bugdroid.menuexe.R;
import com.example.bugdroid.menuexe.TabFragments.PageAdapter;
import com.example.bugdroid.menuexe.database.DAL;
import com.example.bugdroid.menuexe.database.DBAccessMode;

public class VerRegsSintomas extends AppCompatActivity {

    private ViewPager mViewPager;
    private DAL dal;

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

        android.support.v7.app.ActionBar actionBar = getSupportActionBar();
        actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#1a212c")));

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
        tabLayout.addTab(tabLayout.newTab().setText("Sintomas"));
        tabLayout.addTab(tabLayout.newTab().setText("Listas"));
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

        final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
        final PageAdapter adapter = new PageAdapter
                (getSupportFragmentManager(), tabLayout.getTabCount());
        viewPager.setAdapter(adapter);
        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
        tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {

            @Override
            public void onTabSelected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });
    }
}

 package com.example.bugdroid.menuexe.TabFragments;

/**
 * Created by BugDroid on 07/06/2016.
 */

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


public class PageAdapter extends FragmentStatePagerAdapter {
    int mNumOfTabs;

    public PageAdapter(FragmentManager fm, int NumOfTabs) {
        super(fm);
        this.mNumOfTabs = NumOfTabs;
    }

    @Override
    public Fragment getItem(int position) {

        switch (position) {
            case 0:
                TabSintomas tab1 = new TabSintomas();
                return tab1;
            case 1:
                TabListas tab2 = new TabListas();
                return tab2;
            default:
                return null;
        }
    }

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

    package com.example.bugdroid.menuexe.TabFragments;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.bugdroid.menuexe.R;

public class TabSintomas extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_tab_sintomas, container, false);
    }
}

PageAdapter.java:

    package com.example.bugdroid.menuexe.Activities;

import android.app.Activity;
import android.database.Cursor;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.widget.ListView;

import com.example.bugdroid.menuexe.CursorAdapter.RegistosCursorAdapter;
import com.example.bugdroid.menuexe.R;
import com.example.bugdroid.menuexe.TabFragments.PageAdapter;
import com.example.bugdroid.menuexe.database.DAL;
import com.example.bugdroid.menuexe.database.DBAccessMode;

public class VerRegsSintomas extends AppCompatActivity {

    private ViewPager mViewPager;
    private DAL dal;

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

        android.support.v7.app.ActionBar actionBar = getSupportActionBar();
        actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#1a212c")));

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
        tabLayout.addTab(tabLayout.newTab().setText("Sintomas"));
        tabLayout.addTab(tabLayout.newTab().setText("Listas"));
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

        final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
        final PageAdapter adapter = new PageAdapter
                (getSupportFragmentManager(), tabLayout.getTabCount());
        viewPager.setAdapter(adapter);
        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
        tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {

            @Override
            public void onTabSelected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });
    }
}

 package com.example.bugdroid.menuexe.TabFragments;

/**
 * Created by BugDroid on 07/06/2016.
 */

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


public class PageAdapter extends FragmentStatePagerAdapter {
    int mNumOfTabs;

    public PageAdapter(FragmentManager fm, int NumOfTabs) {
        super(fm);
        this.mNumOfTabs = NumOfTabs;
    }

    @Override
    public Fragment getItem(int position) {

        switch (position) {
            case 0:
                TabSintomas tab1 = new TabSintomas();
                return tab1;
            case 1:
                TabListas tab2 = new TabListas();
                return tab2;
            default:
                return null;
        }
    }

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

    package com.example.bugdroid.menuexe.TabFragments;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.bugdroid.menuexe.R;

public class TabSintomas extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_tab_sintomas, container, false);
    }
}

TabSintomas.java:

    package com.example.bugdroid.menuexe.Activities;

import android.app.Activity;
import android.database.Cursor;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.widget.ListView;

import com.example.bugdroid.menuexe.CursorAdapter.RegistosCursorAdapter;
import com.example.bugdroid.menuexe.R;
import com.example.bugdroid.menuexe.TabFragments.PageAdapter;
import com.example.bugdroid.menuexe.database.DAL;
import com.example.bugdroid.menuexe.database.DBAccessMode;

public class VerRegsSintomas extends AppCompatActivity {

    private ViewPager mViewPager;
    private DAL dal;

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

        android.support.v7.app.ActionBar actionBar = getSupportActionBar();
        actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#1a212c")));

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
        tabLayout.addTab(tabLayout.newTab().setText("Sintomas"));
        tabLayout.addTab(tabLayout.newTab().setText("Listas"));
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

        final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
        final PageAdapter adapter = new PageAdapter
                (getSupportFragmentManager(), tabLayout.getTabCount());
        viewPager.setAdapter(adapter);
        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
        tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {

            @Override
            public void onTabSelected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });
    }
}

 package com.example.bugdroid.menuexe.TabFragments;

/**
 * Created by BugDroid on 07/06/2016.
 */

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


public class PageAdapter extends FragmentStatePagerAdapter {
    int mNumOfTabs;

    public PageAdapter(FragmentManager fm, int NumOfTabs) {
        super(fm);
        this.mNumOfTabs = NumOfTabs;
    }

    @Override
    public Fragment getItem(int position) {

        switch (position) {
            case 0:
                TabSintomas tab1 = new TabSintomas();
                return tab1;
            case 1:
                TabListas tab2 = new TabListas();
                return tab2;
            default:
                return null;
        }
    }

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

    package com.example.bugdroid.menuexe.TabFragments;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.bugdroid.menuexe.R;

public class TabSintomas extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_tab_sintomas, container, false);
    }
}

fragment\u Tab\u sintomas.xml

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".Activities.VerRegistos">

    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/listv"
        android:layout_alignParentTop="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>

试试这个，在这里，你可以在Viewpager和自定义工具栏的帮助下找到一个表格布局，同时你还可以在那里找到一个导航抽屉