Android Fragment分页显示的实现

分页显示有两种方式 一种是使用ViewPager 另一种是使用FragmentTransaction

上代码

1 FragmentTransaction实现方式

public class MainActivity extends FragmentActivity implements View.OnClickListener {
 
  private AllPhotosFragment allPhotosFragment;
  private MyAlbumFragment myAlbumFragment;
  private ShareTimeFragment shareTimeFragment;
  private ShotTimeFragment shotTimeFragment;
  private ThemeAlbumFragment themeAlbumFragment;
  private PersonalFragment personalFragment;
 
  private ImageView test1;
  private ImageView test2;
  private ImageView test3;
 
  private FragmentManager fragmentManager;
 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏
    setContentView(R.layout.activity_main);
 
    test1 = (ImageView) findViewById(R.id.test1);
    test2 = (ImageView) findViewById(R.id.test2);
    test3 = (ImageView) findViewById(R.id.test3);
    test1.setOnClickListener(this);
    test2.setOnClickListener(this);
    test3.setOnClickListener(this);
 
    fragmentManager = getSupportFragmentManager();
 
  }
 
  @Override
  public void onClick(View v) {
 
    FragmentTransaction transaction = fragmentManager.beginTransaction();
    hideFragments(transaction);
 
    switch (v.getId()) {
      case R.id.test1:
        if (allPhotosFragment == null) {
          allPhotosFragment = new AllPhotosFragment();
          transaction.add(R.id.id_content, allPhotosFragment);
        }else {
          transaction.show(allPhotosFragment);
        }
        break;
      case R.id.test2:
        if (shareTimeFragment == null) {
          shareTimeFragment = new ShareTimeFragment();
          transaction.add(R.id.id_content, shareTimeFragment);
        }else {
          transaction.show(shareTimeFragment);
        }
        break;
      case R.id.test3:
        if (personalFragment == null) {
          personalFragment = new PersonalFragment();
          transaction.add(R.id.id_content, personalFragment);
        }else {
          transaction.show(personalFragment);
        }
        break;
    }
 
    transaction.commit();
 
  }
 
  private void hideFragments(FragmentTransaction transaction) {
    if (allPhotosFragment != null) {
      transaction.hide(allPhotosFragment);
    }
    if (shareTimeFragment != null) {
      transaction.hide(shareTimeFragment);
    }
    if (personalFragment != null) {
      transaction.hide(personalFragment);
    }
  }
 
}

<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"
    tools:context="com.example.testfragment.MainActivity" >
 
    <FrameLayout
        android:id="@+id/id_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#FFFFFF" />
 
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:layout_alignParentTop="true"
        android:background="#123456" >
    </RelativeLayout>
 
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:layout_alignParentBottom="true"
        android:background="#123456"
        android:gravity="center_vertical"
        android:orientation="horizontal" >
 
        <ImageView
            android:id="@+id/test1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:src="@drawable/test1" />
 
        <ImageView
            android:id="@+id/test2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:src="@drawable/test2" />
 
        <ImageView
            android:id="@+id/test3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:src="@drawable/test3" />
    </LinearLayout>
 
</RelativeLayout>

public class PersonalFragment extends Fragment{
 
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 
    View view = inflater.inflate(R.layout.fragment_test, container, false);
    TextView textView = (TextView) view.findViewById(R.id.tv);
    textView.setText("PersonalFragment");
    return view;
  }
 
}

Code见https://github.com/huanyi0723/TestFragmentTransaction

2 FragmentPagerAdapter实现方式

public class MainActivity extends FragmentActivity {
 
  private ArrayList<Fragment> fragments;
  private ViewPager viewPager;
  private MyViewPagerAdapter myViewPagerAdapter;
 
  private AllPhotosFragment allPhotosFragment;
  private MyAlbumFragment myAlbumFragment;
  private ShareTimeFragment shareTimeFragment;
  private ShotTimeFragment shotTimeFragment;
  private ThemeAlbumFragment themeAlbumFragment;
  private PersonalFragment personalFragment;
 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏
    setContentView(R.layout.activity_main);
 
    viewPager = (ViewPager) findViewById(R.id.viewpager);
 
    fragments = new ArrayList<Fragment>();
    allPhotosFragment = new AllPhotosFragment();
    myAlbumFragment = new MyAlbumFragment();
    shareTimeFragment = new ShareTimeFragment();
    shotTimeFragment = new ShotTimeFragment();
    themeAlbumFragment = new ThemeAlbumFragment();
    personalFragment = new PersonalFragment();
    fragments.add(allPhotosFragment);
    fragments.add(myAlbumFragment);
    fragments.add(shareTimeFragment);
    fragments.add(shotTimeFragment);
    fragments.add(themeAlbumFragment);
    fragments.add(personalFragment);
    myViewPagerAdapter = new MyViewPagerAdapter(getSupportFragmentManager(), fragments);
 
    viewPager.setAdapter(myViewPagerAdapter);
    viewPager.setCurrentItem(0);
  }
 
}

<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"
    tools:context="com.example.testfragment.MainActivity" >
 
    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#FFFFFF" />
 
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:layout_alignParentTop="true"
        android:background="#123456" >
    </RelativeLayout>
 
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:layout_alignParentBottom="true"
        android:background="#123456" >
    </RelativeLayout>
 
</RelativeLayout>

public class MyViewPagerAdapter extends FragmentPagerAdapter{
 
  private ArrayList<Fragment> fragments;
 
  public MyViewPagerAdapter(FragmentManager fm, ArrayList<Fragment> fragments) {
    super(fm);
    this.fragments = fragments;
  }
 
  @Override
  public Fragment getItem(int arg0) {
    return fragments.get(arg0);
  }
 
  @Override
  public int getCount() {
    return fragments.size();
  }
 
}

public class AllPhotosFragment extends Fragment {
 
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_test, container, false);
    TextView textView = (TextView) view.findViewById(R.id.tv);
    textView.setText("AllPhotosFragment");
    return view;
  }
 
}

Code见https://github.com/huanyi0723/TestFragmentPagerAdapter/