PagerSlidingTabStrip实施指南

Question

我试图在我的应用程序中使用此库:https://github.com/astuetz/PagerSlidingTabStrip

我阅读了文档,但我什么都不懂.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？

我在哪里放这个代码块:

// 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片段和主要活动？(我对viewpager xml有同样的问题)任何人都可以向我解释如何逐步实现这个到我的应用程序？

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

Answer 1

一步步

我只是按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);
    }
}

和

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

以及它们的布局例如可以是:

<?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viewpager,将viewpager分配给PagerSlidingTabStripMainActivity

    @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)跑