程序入口是Guide,一个三个页面的引导页,需要使用到ViewPager,Android里面PagerAdapter相当于ios里面的cell。
guide.xml中配置:
<?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.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#00000000"
>
</android.support.v4.view.ViewPager>
</RelativeLayout>
在ViewPagerAdapter中重写一些方法:
public class ViewPagerAdapter extends PagerAdapter{
private List<View>views;
private Context context;
public ViewPagerAdapter(List<View>views, Context context){
this.views = views;
this.context = context;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
// super.destroyItem(container, position, object);
((ViewPager)container).removeView(views.get(position));
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
((ViewPager)container).addView(views.get(position));
return views.get(position);
}
@Override
public int getCount() {
return views.size();
}
@Override
public boolean isViewFromObject(View view, Object object) {
return (view == object);
}
}
最后在Guide中使用:
public class Guide extends Activity {
private ViewPager vp;
private ViewPagerAdapter vpAdapter;
private List<View>views;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.guide);
initViews();
}
private void initViews(){
LayoutInflater inflater = LayoutInflater.from(this);
views = new ArrayList<View>();
views.add(inflater.inflate(R.layout.one,null));
views.add(inflater.inflate(R.layout.two,null));
views.add(inflater.inflate(R.layout.three,null));
vpAdapter = new ViewPagerAdapter(views,this);
vp = (ViewPager)findViewById(R.id.viewPager);
vp.setAdapter(vpAdapter);
}
}