使用viewpager时一般需要使用PagerTitleStrip类和PagerTabStrip 类，PagerTitleStrip类继承自ViewGroup类，
而PagerTabStrip类继承PagerTitleStrip类，这两 个类是容器类。注意，在定义XML的layout的时候，这两个类必须是ViewPager的子标签，不然会出错。
布局文件XML:
<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=".MainActivity" >
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<android.support.v4.view.PagerTabStrip
android:id="@+id/tabstrip"
android:layout_width="wrap_content"
android:layout_height="30dip"
android:gravity="center" />
</android.support.v4.view.ViewPager>
</RelativeLayout>
MainActivity.class:
public class MainActivity extends AppCompatActivity {
private ViewPager pager;
private PagerTabStrip tabStrip;
private List<View> viewContainter = new ArrayList<View>();
private List<String> titleContainer = new ArrayList<String>();
private String TAG = "MainActivity";
@SuppressLint("ResourceAsColor")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pager = (ViewPager) findViewById(R.id.viewpager);
tabStrip = (PagerTabStrip) findViewById(R.id.tabstrip);
View view1 = LayoutInflater.from(this).inflate(R.layout.tab_item1, null);
View view2 = LayoutInflater.from(this).inflate(R.layout.tab_item2, null);
View view3 = LayoutInflater.from(this).inflate(R.layout.tab_item3, null);
View view4 = LayoutInflater.from(this).inflate(R.layout.tab_item4, null);
//viewpager开始添加view
viewContainter.add(view1);
viewContainter.add(view2);
viewContainter.add(view3);
viewContainter.add(view4);
//页签项
titleContainer.add("title1");
titleContainer.add("title2");
titleContainer.add("title3");
titleContainer.add("title4");
//设置ViewPager控件的适配器
pager.setAdapter(new PagerAdapter() {
//viewpager中的组件数量
@Override
public int getCount() {
return viewContainter.size();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
//销毁position位置的界面
@Override
public void destroyItem(ViewGroup container, int position,
Object object) {
((ViewPager) container).removeView(viewContainter.get(position));
}
//初始化position位置的界面,每次滑动的时候生成的组件
@Override
public Object instantiateItem(ViewGroup container, int position) {
((ViewPager) container).addView(viewContainter.get(position));
return viewContainter.get(position);
}
@Override
public CharSequence getPageTitle(int position) {
return titleContainer.get(position);
}
@Override
public int getItemPosition(Object object) {
return super.getItemPosition(object);
}
});
pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrollStateChanged(int arg0) {
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageSelected(int arg0) {
}
});
}
}