ViewPager及ViewPager的使用

1.首先准备布局

<android.support.v4.view.ViewPager         android:id="@+id/viewpager"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="center"  />

2.准备数据源

  LayoutInflater inflater=getLayoutInflater();       View  view1 = inflater.inflate(R.layout.layout1, null);        ArrayList<View>()  viewList = new ArrayList<View>();         viewList.add(view1);       MyAdapter  myAdapter=new MyAdapter(this,viewList);         viewPager.setAdapter(myAdapter);

3.自定义MyAdapter继承PagerAdapter，重写四个方法 

public class MyAdapter extends PagerAdapter {     public int getCount() {         return viewList .size();}     public boolean isViewFromObject(View view, Object object) {         return view==object; }

fragment的Java后台

public class PagerFragment extends Fragment {     String mContent;     @Override     public View onCreateView(LayoutInflater inflater, ViewGroup container,                              Bundle savedInstanceState) {         mContent = (String) getArguments().get("content");         View view = inflater.inflate(R.layout.fragment_pager, container, false) ;         TextView textView = (TextView) view.findViewById(R.id.tv);         textView.setText(mContent);         return view;     } }

final List<PagerFragment> list = new ArrayList<>();     for (int i = 0; i < 5; i++) {         PagerFragment fragment = new PagerFragment();         Bundle bundle = new Bundle();         bundle.putString("content","第"+i+"个Fragment");         fragment.setArguments(bundle);         list.add(fragment);     }     ViewPager vp = (ViewPager) findViewById(R.id.vp);     vp.setAdapter(new FragmentStatePagerAdapter(getSupportFragmentManager()) {         @Override         public Fragment getItem(int position) {             return list.get(position);         }         @Override         public int getCount() {             return list.size();         }     });

xml页面布局:

<FrameLayout     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.strivestay.viewpagerdemo.PagerFragment">     <TextView         android:id="@+id/tv"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:gravity="center"         android:textSize="18sp"         android:text="@string/hello_blank_fragment"/> </FrameLayout>