PagerSlidingTabStrip实施指南

时间:2014-10-03 12:21:12

标签: android pagerslidingtabstrip

我正在尝试在我的应用中使用此库:https://github.com/astuetz/PagerSlidingTabStrip

我阅读了文档,但我没有理解任何内容。我有两个片段,所以我想在我的应用程序中放置两个标签。我在哪里放置viewpager xml?

我在哪里放置此代码块:

// Initialize the ViewPager and set an adapter
 ViewPager pager = (ViewPager) findViewById(R.id.pager);
 pager.setAdapter(new TestAdapter(getSupportFragmentManager()));

 // Bind the tabs to the ViewPager
 PagerSlidingTabStrip tabs = (PagerSlidingTabStrip) findViewById(R.id.tabs);
 tabs.setViewPager(pager); 

只是主要活动或所有碎片和主要活动? (我对viewpager xml有同样的问题)任何人都可以向我解释如何逐步将这个实现到我的应用程序中?

Ps:https://github.com/astuetz/PagerSlidingTabStrip/tree/master/sample这是示例代码。

2 个答案:

答案 0 :(得分:32)

  

一步一步

我只是按照你的要求制作了两个标签!

0)将库添加到构建路径

1)创建两个片段

public class FragmentA extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_a,container,false);
    }
}

public class FragmentB extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_b,container,false);
    }
}

及其布局例如可以是:

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:background="#FFFF00">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="This is Fragment A"
        android:id="@+id/textView"
        android:gravity="center"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true" />
</RelativeLayout>

2)创建MainActivity布局:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <com.astuetz.PagerSlidingTabStrip
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="48dip"
        />

    <android.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tabs"
        tools:context=".MainActivity" />

</RelativeLayout>

3)创建您的viewpager适配器

public class MyPagerAdapter extends FragmentPagerAdapter {

    public MyPagerAdapter(FragmentManager fm) {
        super(fm);
    }
    @Override
    public CharSequence getPageTitle(int position) {
        return (position == 0)? "Tab 1" : "Tab2" ;
    }
    @Override
    public int getCount() {
       return 2;
    }
   @Override
   public Fragment getItem(int position) {
      return (position == 0)? new FragmentA() : new FragmentB() ;
   }
}

3)将适配器分配给您的viewpager,并将viewpager分配给MainActivity的PagerSlidingTabStrip

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

         ViewPager pager = (ViewPager) findViewById(R.id.pager);
         pager.setAdapter(new MyAdapter(getSupportFragmentManager()));

         // Bind the tabs to the ViewPager
         PagerSlidingTabStrip tabs = (PagerSlidingTabStrip) findViewById(R.id.tabs);
         tabs.setViewPager(pager); 
    }

4)运行

enter image description here

答案 1 :(得分:1)

您的布局文件顶部会有标签,底部会有一个ViewPager,如下面的代码段所示:

<com.astuetz.PagerSlidingTabStrip
    android:id="@+id/tabs"
    app:pstsShouldExpand="true"
    app:pstsTextAllCaps="true"
    android:layout_width="match_parent"
    android:layout_height="48dp">
</com.astuetz.PagerSlidingTabStrip>


<android.support.v4.view.ViewPager
    android:id="@+id/viewpager"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/white" />

创建片段

创建片段[res / layout / fragment_page.xml]并复制并粘贴此代码

<TextView
android:id="@+id/tvTitle"
android:text="Fragment #X"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center" />

在PageFragment.java中定义标签内容片段部分的通胀逻辑:

public class PageFragment extends Fragment {
private int mPage;
public static final String ARG_PAGE = "ARG_PAGE";

public static PageFragment newInstance(int page) {
    Bundle args = new Bundle();
    args.putInt(ARG_PAGE, page);
    PageFragment fragment = new PageFragment();
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mPage = getArguments().getInt(ARG_PAGE);
}

// Inflate the fragment layout we defined above for this fragment
// Set the associated text for the title
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_page, container, false);
    TextView tvTitle = (TextView) view.findViewById(R.id.tvTitle);
    tvTitle.setText("Fragment #" + mPage);
    return view;
}

实施FragmentPagerAdapter

接下来要做的是为ViewPager实现适配器,该适配器控制选项卡的顺序。

public class SampleFragmentPagerAdapter extends FragmentPagerAdapter{


final int PAGE_COUNT = 3;
private String tabTitles[] = new String[] { "Tab1", "Tab2", "Tab3" };

public SampleFragmentPagerAdapter(FragmentManager fm) {
    super(fm);
}

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

@Override
public Fragment getItem(int position) {
    return PageFragment.newInstance(position + 1);
}

@Override
public CharSequence getPageTitle(int position) {
    // Generate title based on item position
    return tabTitles[position];
}}

设置滑动标签

最后,我们需要将ViewPager附加到SampleFragmentPagerAdapter,然后通过两个步骤配置滑动选项卡:

在活动的onCreate()方法中,找到ViewPager并连接适配器。

在PagerSlidingTabStrip上设置ViewPager,将寻呼机与标签连接起来。

public class MainActivity extends FragmentActivity {

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

    // Get the ViewPager and set it's PagerAdapter so that it can display items
    ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
    viewPager.setAdapter(new SampleFragmentPagerAdapter(getSupportFragmentManager()));

    // Give the PagerSlidingTabStrip the ViewPager
    PagerSlidingTabStrip tabsStrip = (PagerSlidingTabStrip) findViewById(R.id.tabs);
    // Attach the view pager to the tab strip
    tabsStrip.setViewPager(viewPager);
}}

这是结果

enter image description here

有关详细信息,请查看以下link

祝你好运