public class MainActivity
extends Activity {
private ViewPager viewPager;
private List<View>
Views;
private ImageView[] imgs;
private ViewGroup main,group;
private ImageView img;
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
Views=
new ArrayList<View>
();
main=(ViewGroup) View.inflate(
this,R.layout.main,
null);
viewPager=
(ViewPager) main.findViewById(R.id.viewpager);
group=
(ViewGroup) main.findViewById(R.id.viewgroup);
View view1=View.inflate(
this, R.layout.item0,
null);
View view2=View.inflate(
this, R.layout.item1,
null);
View view3=View.inflate(
this, R.layout.item2,
null);
View view4=View.inflate(
this, R.layout.item4,
null);
Views.add(view4);
Views.add(view3);
Views.add(view2);
Views.add(view1);
imgs=
new ImageView[Views.size()];
for(
int i=0;i<Views.size();i++
)
{
img=
new ImageView(
this);
img.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
img.setPadding(10, 10, 10, 10
);
if(i==0
)
{
img.setImageResource(R.drawable.white);
}else
{
img.setImageResource(R.drawable.black);
}
group.addView(img);
imgs[i]=
img;
}
setContentView(main);
//添加数据
viewPager.setAdapter(
new MyAdapter());
//监听滑动效果
viewPager.setOnPageChangeListener(
new OnPageChangeListener()
{
public void onPageSelected(
int arg0)
{
for(
int i=0;i<Views.size();i++
)
{
if(arg0!=
i)
{
imgs[i].setImageResource(R.drawable.black);
}else
{
imgs[i].setImageResource(R.drawable.white);
}
}
}
@Override
public void onPageScrolled(
int arg0,
float arg1,
int arg2){ }
public void onPageScrollStateChanged(
int arg0){}
});
}
class MyAdapter
extends PagerAdapter
{
@Override
public int getCount() {
return Views.size();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1)
{
return arg0==
arg1;
}
@Override
public int getItemPosition(Object object)
{
return super.getItemPosition(object);
}
public void destroyItem(View container,
int position, Object object) {
((ViewPager) container).removeView(Views.get(position));
}
@Override
public Object instantiateItem(View container,
int position) {
((ViewPager) container).addView(Views.get(position));
return Views.get(position);
}
}
}
xml布局文件
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/viewgroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="30dp"
android:gravity="center_horizontal"
android:orientation="horizontal" >
</LinearLayout>
</RelativeLayout>
</FrameLayout>
最后一点是，记得引入android-support-v4.jar包
运行效果：
转载于:https://www.cnblogs.com/tianshidechibang234/p/3254744.html
