IT. Expert System.

Android Reference

HeaderViewListAdapter


android.widget

Class HeaderViewListAdapter

  • All Implemented Interfaces:
    Adapter, Filterable, ListAdapter, WrapperListAdapter


    public class HeaderViewListAdapter
    extends Object
    implements WrapperListAdapter, Filterable
    ListAdapter used when a ListView has header views. This ListAdapter wraps another one and also keeps track of the header views and their associated data objects.

    This is intended as a base class; you will probably not need to use this class directly in your own code.

    • Method Detail

      • getHeadersCount

        public int getHeadersCount()
      • getFootersCount

        public int getFootersCount()
      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface Adapter
        Returns:
        true if this adapter doesn't contain any data. This is used to determine whether the empty view should be displayed. A typical implementation will return getCount() == 0 but since getCount() includes the headers and footers, specialized adapters might want a different behavior.
      • removeHeader

        public boolean removeHeader(View v)
      • removeFooter

        public boolean removeFooter(View v)
      • getCount

        public int getCount()
        Description copied from interface: Adapter
        How many items are in the data set represented by this Adapter.
        Specified by:
        getCount in interface Adapter
        Returns:
        Count of items.
      • areAllItemsEnabled

        public boolean areAllItemsEnabled()
        Description copied from interface: ListAdapter
        Indicates whether all the items in this adapter are enabled. If the value returned by this method changes over time, there is no guarantee it will take effect. If true, it means all items are selectable and clickable (there is no separator.)
        Specified by:
        areAllItemsEnabled in interface ListAdapter
        Returns:
        True if all items are enabled, false otherwise.
        See Also:
        ListAdapter.isEnabled(int)
      • isEnabled

        public boolean isEnabled(int position)
        Description copied from interface: ListAdapter
        Returns true if the item at the specified position is not a separator. (A separator is a non-selectable, non-clickable item). The result is unspecified if position is invalid. An ArrayIndexOutOfBoundsException should be thrown in that case for fast failure.
        Specified by:
        isEnabled in interface ListAdapter
        Parameters:
        position - Index of the item
        Returns:
        True if the item is not a separator
        See Also:
        ListAdapter.areAllItemsEnabled()
      • getItem

        public Object getItem(int position)
        Description copied from interface: Adapter
        Get the data item associated with the specified position in the data set.
        Specified by:
        getItem in interface Adapter
        Parameters:
        position - Position of the item whose data we want within the adapter's data set.
        Returns:
        The data at the specified position.
      • getItemId

        public long getItemId(int position)
        Description copied from interface: Adapter
        Get the row id associated with the specified position in the list.
        Specified by:
        getItemId in interface Adapter
        Parameters:
        position - The position of the item within the adapter's data set whose row id we want.
        Returns:
        The id of the item at the specified position.
      • hasStableIds

        public boolean hasStableIds()
        Description copied from interface: Adapter
        Indicates whether the item ids are stable across changes to the underlying data.
        Specified by:
        hasStableIds in interface Adapter
        Returns:
        True if the same id always refers to the same object.
      • getView

        public View getView(int position,
                   View convertView,
                   ViewGroup parent)
        Description copied from interface: Adapter
        Get a View that displays the data at the specified position in the data set. You can either create a View manually or inflate it from an XML layout file. When the View is inflated, the parent View (GridView, ListView...) will apply default layout parameters unless you use LayoutInflater.inflate(int, android.view.ViewGroup, boolean) to specify a root view and to prevent attachment to the root.
        Specified by:
        getView in interface Adapter
        Parameters:
        position - The position of the item within the adapter's data set of the item whose view we want.
        convertView - The old view to reuse, if possible. Note: You should check that this view is non-null and of an appropriate type before using. If it is not possible to convert this view to display the correct data, this method can create a new view. Heterogeneous lists can specify their number of view types, so that this View is always of the right type (see Adapter.getViewTypeCount() and Adapter.getItemViewType(int)).
        parent - The parent that this view will eventually be attached to
        Returns:
        A View corresponding to the data at the specified position.
      • registerDataSetObserver

        public void registerDataSetObserver(DataSetObserver observer)
        Description copied from interface: Adapter
        Register an observer that is called when changes happen to the data used by this adapter.
        Specified by:
        registerDataSetObserver in interface Adapter
        Parameters:
        observer - the object that gets notified when the data set changes.
      • getFilter

        public Filter getFilter()
        Description copied from interface: Filterable

        Returns a filter that can be used to constrain data with a filtering pattern.

        This method is usually implemented by Adapter classes.

        Specified by:
        getFilter in interface Filterable
        Returns:
        a filter used to constrain data


Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 625 / 158858997. Delta: 0.04868 с