8
Estoy tratando de agregar Viewpager (utilizando support library4) en un encabezado de lista pero no muestra nada. este es mi código por favor ayuda. Estará en el encabezado de la lista no como un elemento, por lo que no debería ser un problema.Agregar viewpager como encabezado de desplazamiento en listview
public class CustomActivity extends ListActivity {
private static int NUM_AWESOME_VIEWS = 20;
private Context cxt;
private CustomPageAdapter pageAdapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String[] items = { "this", "is", "my", "list", "view", "data" };
this.cxt = this;
ViewPager viewPager = new ViewPager(this);
pageAdapter = new CustomPageAdapter();
viewPager.setAdapter(pageAdapter);
viewPager.requestLayout();
getListView().addHeaderView(viewPager);
setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, items));
}
private class CustomPageAdapter extends PagerAdapter{
@Override
public int getCount() {
return NUM_AWESOME_VIEWS;
}
/**
* Create the page for the given position. The adapter is responsible
* for adding the view to the container given here, although it only
* must ensure this is done by the time it returns from
* {@link #finishUpdate()}.
*
* @param container The containing View in which the page will be shown.
* @param position The page position to be instantiated.
* @return Returns an Object representing the new page. This does not
* need to be a View, but can be some other container of the page.
*/
@Override
public Object instantiateItem(View collection, int position) {
TextView tv = new TextView(cxt);
tv.setText("Bonjour PAUG " + position);
tv.setTextColor(Color.WHITE);
tv.setTextSize(20);
((ViewPager) collection).addView(tv,0);
return tv;
}
/**
* Remove a page for the given position. The adapter is responsible
* for removing the view from its container, although it only must ensure
* this is done by the time it returns from {@link #finishUpdate()}.
*
* @param container The containing View from which the page will be removed.
* @param position The page position to be removed.
* @param object The same object that was returned by
* {@link #instantiateItem(View, int)}.
*/
@Override
public void destroyItem(View collection, int position, Object view) {
((ViewPager) collection).removeView((TextView) view);
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view==((TextView)object);
}
/**
* Called when the a change in the shown pages has been completed. At this
* point you must ensure that all of the pages have actually been added or
* removed from the container as appropriate.
* @param container The containing View which is displaying this adapter's
* page views.
*/
@Override
public void finishUpdate(View arg0) {
}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
}
@Override
public Parcelable saveState() {
return null;
}
@Override
public void startUpdate(View arg0) {
}
}
}
intenté utilizar una actividad con un diseño que tenía ListView y luego agregué ViewPager sobre ListView – Proxy32
@ Proxy32 Quiero ver el localizador en el encabezado de desplazamiento no como un encabezado fijo en la parte superior, así que no lo intenté de esa manera. – user606669