viewpager的使用

xml文件布局

<?xmlversion="1.0"encoding="utf-8"?>

<RelativeLayoutxmlns: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="tangxueqin.example.week_01.MainActivity">

<LinearLayout

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    >

  <android.support.v4.view.ViewPager

      android:id="@+id/view_pager"

      android:layout_width="match_parent"

      android:layout_height="match_parent"

      android:layout_weight="9"

      ></android.support.v4.view.ViewPager>

    <RadioGroup

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/radio_group"

        android:layout_weight="1"

        android:orientation="horizontal"

        >

      <RadioButton

          android:layout_width="wrap_content"

          android:layout_height="wrap_content"

          android:id="@+id/radio_01"

          android:text="首页"

          android:layout_weight="1"

          android:button="@null"

          android:padding="10dp"

          android:gravity="center_horizontal"

          android:checked="true"

          android:background="@drawable/radio_selector"

          />

      <RadioButton

          android:layout_width="wrap_content"

          android:layout_height="wrap_content"

          android:id="@+id/radio_02"

          android:text="西瓜视频"

          android:layout_weight="1"

          android:button="@null"

          android:padding="10dp"

          android:gravity="center_horizontal"

          android:background="@drawable/radio_selector"

          />

      <RadioButton

          android:layout_width="wrap_content"

          android:layout_height="wrap_content"

          android:id="@+id/radio_03"

          android:text="微头条"

          android:layout_weight="1"

          android:button="@null"

          android:padding="10dp"

          android:gravity="center_horizontal"

          android:background="@drawable/radio_selector"

          />

      <RadioButton

          android:layout_width="wrap_content"

          android:layout_height="wrap_content"

          android:id="@+id/radio_04"

          android:text="我的"

          android:layout_weight="1"

          android:button="@null"

          android:padding="10dp"

          android:gravity="center_horizontal"

          android:background="@drawable/radio_selector"

          />

 

 

    </RadioGroup>

</LinearLayout>

</RelativeLayout>




activity中的使用

public class MainActivity extends FragmentActivity{       private ViewPager view_pager;     private RadioGroup radio_droup;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);         view_pager = (ViewPager) findViewById(R.id.view_pager);         radio_droup = (RadioGroup) findViewById(R.id.radio_group);           List<Fragment> list=new ArrayList<>();         list.add(new Fragment_01());         list.add(new Fragment_02());         list.add(new Fragment_03());         list.add(new Fragment_04());           //创建适配器        view_pager.setAdapter(new MyfragmnetpagerAdapter(getSupportFragmentManager(),list)); view_pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {     @Override     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {       }       @Override     public void onPageSelected(int position) {     radio_droup.check(radio_droup.getChildAt(position).getId());     }       @Override     public void onPageScrollStateChanged(int state) {       } });         radio_droup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {             @Override             public void onCheckedChanged(RadioGroup radioGroup, int i) {                 switch (i) {                     case R.id.radio_01:                         view_pager.setCurrentItem(0);                         break;                     case R.id.radio_02:                         view_pager.setCurrentItem(1);                           break;                     case R.id.radio_03:                         view_pager.setCurrentItem(2);                           break;                     case R.id.radio_04:                         view_pager.setCurrentItem(3);                           break;                       default:                         break;                 }             }         });     } }

public class MainActivity extends FragmentActivity{

 

    private ViewPager view_pager;

    private RadioGroup radio_droup;

 

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        view_pager = (ViewPager) findViewById(R.id.view_pager);

        radio_droup = (RadioGroup) findViewById(R.id.radio_group);

 

        List<Fragment> list=new ArrayList<>();

        list.add(new Fragment_01());

        list.add(new Fragment_02());

        list.add(new Fragment_03());

        list.add(new Fragment_04());

 

        //创建适配器

       view_pager.setAdapter(new MyfragmnetpagerAdapter(getSupportFragmentManager(),list));




view_pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {

    @Override

    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

 

    }

 

    @Override

    public void onPageSelected(int position) {

    radio_droup.check(radio_droup.getChildAt(position).getId());

    }

 

    @Override

    public void onPageScrollStateChanged(int state) {

 

    }

});

        radio_droup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

            @Override

            public void onCheckedChanged(RadioGroup radioGroup, int i) {

                switch (i) {

                    case R.id.radio_01:

                        view_pager.setCurrentItem(0);

                        break;

                    case R.id.radio_02:

                        view_pager.setCurrentItem(1);

 

                        break;

                    case R.id.radio_03:

                        view_pager.setCurrentItem(2);

 

                        break;

                    case R.id.radio_04:

                        view_pager.setCurrentItem(3);

 

                        break;

 

                    default:

                        break;

                }

            }

        });

    }

}