Android APIs
public class

ExpandableListView

extends ListView
java.lang.Object
   ↳ android.view.View
     ↳ android.view.ViewGroup
       ↳ android.widget.AdapterView<T extends android.widget.Adapter>
         ↳ android.widget.AbsListView
           ↳ android.widget.ListView
             ↳ android.widget.ExpandableListView

Class Overview

A view that shows items in a vertically scrolling two-level list. This differs from the ListView by allowing two levels: groups which can individually be expanded to show its children. The items come from the ExpandableListAdapter associated with this view.

Expandable lists are able to show an indicator beside each item to display the item's current state (the states are usually one of expanded group, collapsed group, child, or last child). Use setChildIndicator(Drawable) or setGroupIndicator(Drawable) (or the corresponding XML attributes) to set these indicators (see the docs for each method to see additional state that each Drawable can have). The default style for an ExpandableListView provides indicators which will be shown next to Views given to the ExpandableListView. The layouts android.R.layout.simple_expandable_list_item_1 and android.R.layout.simple_expandable_list_item_2 (which should be used with SimpleCursorTreeAdapter) contain the preferred position information for indicators.

The context menu information set by an ExpandableListView will be a ExpandableListView.ExpandableListContextMenuInfo object with packedPosition being a packed position that can be used with getPackedPositionType(long) and the other similar methods.

Note: You cannot use the value wrap_content for the android:layout_height attribute of a ExpandableListView in XML if the parent's size is also not strictly specified (for example, if the parent were ScrollView you could not specify wrap_content since it also can be any length. However, you can use wrap_content if the ExpandableListView parent has a specific size, such as 100 pixels.

Summary

Nested Classes
class ExpandableListView.ExpandableListContextMenuInfo Extra menu information specific to an ExpandableListView provided to the onCreateContextMenu(ContextMenu, View, ContextMenuInfo) callback when a context menu is brought up for this AdapterView. 
interface ExpandableListView.OnChildClickListener Interface definition for a callback to be invoked when a child in this expandable list has been clicked. 
interface ExpandableListView.OnGroupClickListener Interface definition for a callback to be invoked when a group in this expandable list has been clicked. 
interface ExpandableListView.OnGroupCollapseListener Used for being notified when a group is collapsed  
interface ExpandableListView.OnGroupExpandListener Used for being notified when a group is expanded  
XML Attributes
Attribute Name Related Method Description
android:childDivider Drawable or color that is used as a divider for children. 
android:childIndicator Indicator shown beside the child View. 
android:childIndicatorEnd The end bound for a child's indicator. 
android:childIndicatorLeft The left bound for a child's indicator. 
android:childIndicatorRight The right bound for a child's indicator. 
android:childIndicatorStart The start bound for a child's indicator. 
android:groupIndicator Indicator shown beside the group View. 
android:indicatorEnd The end bound for an item's indicator. 
android:indicatorLeft The left bound for an item's indicator. 
android:indicatorRight The right bound for an item's indicator. 
android:indicatorStart The start bound for an item's indicator. 
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Inherited XML Attributes
From class android.widget.ListView
From class android.widget.AbsListView
From class android.view.ViewGroup
From class android.view.View
Constants
int CHILD_INDICATOR_INHERIT Denotes when a child indicator should inherit this bound from the generic indicator bounds
int PACKED_POSITION_TYPE_CHILD The packed position represents a child.
int PACKED_POSITION_TYPE_GROUP The packed position represents a group.
int PACKED_POSITION_TYPE_NULL The packed position represents a neither/null/no preference.
long PACKED_POSITION_VALUE_NULL The value for a packed position that represents neither/null/no preference.
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Inherited Constants
From class android.widget.AbsListView
From class android.widget.AdapterView
From class android.view.ViewGroup
From class android.view.View
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Inherited Fields
From class android.view.View
Public Constructors
ExpandableListView(Context context)
ExpandableListView(Context context, AttributeSet attrs)
ExpandableListView(Context context, AttributeSet attrs, int defStyle)
Public Methods
boolean collapseGroup(int groupPos)
Collapse a group in the grouped list view
boolean expandGroup(int groupPos)
Expand a group in the grouped list view
boolean expandGroup(int groupPos, boolean animate)
Expand a group in the grouped list view
ListAdapter getAdapter()
This method should not be used, use getExpandableListAdapter().
ExpandableListAdapter getExpandableListAdapter()
Gets the adapter that provides data to this view.
long getExpandableListPosition(int flatListPosition)
Converts a flat list position (the raw position of an item (child or group) in the list) to a group and/or child position (represented in a packed position).
int getFlatListPosition(long packedPosition)
Converts a group and/or child position to a flat list position.
static int getPackedPositionChild(long packedPosition)
Gets the child position from a packed position that is of PACKED_POSITION_TYPE_CHILD type (use getPackedPositionType(long)).
static long getPackedPositionForChild(int groupPosition, int childPosition)
Returns the packed position representation of a child's position.
static long getPackedPositionForGroup(int groupPosition)
Returns the packed position representation of a group's position.
static int getPackedPositionGroup(long packedPosition)
Gets the group position from a packed position.
static int getPackedPositionType(long packedPosition)
Gets the type of a packed position.
long getSelectedId()
Gets the ID of the currently selected group or child.
long getSelectedPosition()
Gets the position of the currently selected group or child (along with its type).
boolean isGroupExpanded(int groupPosition)
Whether the given group is currently expanded.
void onInitializeAccessibilityEvent(AccessibilityEvent event)
Initializes an AccessibilityEvent with information about this View which is the event source.
void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)
Initializes an AccessibilityNodeInfo with information about this view.
void onRestoreInstanceState(Parcelable state)
Hook allowing a view to re-apply a representation of its internal state that had previously been generated by onSaveInstanceState().
void onRtlPropertiesChanged(int layoutDirection)
Called when any RTL property (layout direction or text direction or text alignment) has been changed.
Parcelable onSaveInstanceState()
Hook allowing a view to generate a representation of its internal state that can later be used to create a new instance with that same state.
boolean performItemClick(View v, int position, long id)
Call the OnItemClickListener, if it is defined.
void setAdapter(ExpandableListAdapter adapter)
Sets the adapter that provides data to this view.
void setAdapter(ListAdapter adapter)
This overloaded method should not be used, instead use setAdapter(ExpandableListAdapter).
void setChildDivider(Drawable childDivider)
Sets the drawable that will be drawn adjacent to every child in the list.
void setChildIndicator(Drawable childIndicator)
Sets the indicator to be drawn next to a child.
void setChildIndicatorBounds(int left, int right)
Sets the drawing bounds for the child indicator.
void setChildIndicatorBoundsRelative(int start, int end)
Sets the relative drawing bounds for the child indicator.
void setGroupIndicator(Drawable groupIndicator)
Sets the indicator to be drawn next to a group.
void setIndicatorBounds(int left, int right)
Sets the drawing bounds for the indicators (at minimum, the group indicator is affected by this; the child indicator is affected by this if the child indicator bounds are set to inherit).
void setIndicatorBoundsRelative(int start, int end)
Sets the relative drawing bounds for the indicators (at minimum, the group indicator is affected by this; the child indicator is affected by this if the child indicator bounds are set to inherit).
void setOnChildClickListener(ExpandableListView.OnChildClickListener onChildClickListener)
void setOnGroupClickListener(ExpandableListView.OnGroupClickListener onGroupClickListener)
void setOnGroupCollapseListener(ExpandableListView.OnGroupCollapseListener onGroupCollapseListener)
void setOnGroupExpandListener(ExpandableListView.OnGroupExpandListener onGroupExpandListener)
void setOnItemClickListener(AdapterView.OnItemClickListener l)
Register a callback to be invoked when an item has been clicked and the caller prefers to receive a ListView-style position instead of a group and/or child position.
boolean setSelectedChild(int groupPosition, int childPosition, boolean shouldExpandGroup)
Sets the selection to the specified child.
void setSelectedGroup(int groupPosition)
Sets the selection to the specified group.
Protected Methods
void dispatchDraw(Canvas canvas)
Called by draw to draw the child views.
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Inherited Methods
From class android.widget.ListView
From class android.widget.AbsListView
From class android.widget.AdapterView
From class android.view.ViewGroup
From class android.view.View
From class java.lang.Object
From interface android.graphics.drawable.Drawable.Callback
From interface android.text.TextWatcher
From interface android.view.KeyEvent.Callback
From interface android.view.ViewManager
From interface android.view.ViewParent
From interface android.view.ViewTreeObserver.OnGlobalLayoutListener
From interface android.view.ViewTreeObserver.OnTouchModeChangeListener
From interface android.view.accessibility.AccessibilityEventSource
From interface android.widget.Filter.FilterListener

XML Attributes

android:childDivider

Drawable or color that is used as a divider for children. (It will drawn below and above child items.) The height of this will be the same as the height of the normal list item divider.

May be a reference to another resource, in the form "@[+][package:]type:name" or to a theme attribute in the form "?[package:][type:]name".

May be a color value, in the form of "#rgb", "#argb", "#rrggbb", or "#aarrggbb".

This corresponds to the global attribute resource symbol childDivider.

Related Methods

android:childIndicator

Indicator shown beside the child View. This can be a stateful Drawable.

Must be a reference to another resource, in the form "@[+][package:]type:name" or to a theme attribute in the form "?[package:][type:]name".

This corresponds to the global attribute resource symbol childIndicator.

Related Methods

android:childIndicatorEnd

The end bound for a child's indicator.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol childIndicatorEnd.

Related Methods

android:childIndicatorLeft

The left bound for a child's indicator.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol childIndicatorLeft.

Related Methods

android:childIndicatorRight

The right bound for a child's indicator.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol childIndicatorRight.

Related Methods

android:childIndicatorStart

The start bound for a child's indicator.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol childIndicatorStart.

Related Methods

android:groupIndicator

Indicator shown beside the group View. This can be a stateful Drawable.

Must be a reference to another resource, in the form "@[+][package:]type:name" or to a theme attribute in the form "?[package:][type:]name".

This corresponds to the global attribute resource symbol groupIndicator.

Related Methods

android:indicatorEnd

The end bound for an item's indicator. To specify a right bound specific to children, use childIndicatorEnd.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol indicatorEnd.

Related Methods

android:indicatorLeft

The left bound for an item's indicator. To specify a left bound specific to children, use childIndicatorLeft.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol indicatorLeft.

Related Methods

android:indicatorRight

The right bound for an item's indicator. To specify a right bound specific to children, use childIndicatorRight.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol indicatorRight.

Related Methods

android:indicatorStart

The start bound for an item's indicator. To specify a start bound specific to children, use childIndicatorStart.

Must be a dimension value, which is a floating point number appended with a unit such as "14.5sp". Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters).

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol indicatorStart.

Related Methods

Constants

public static final int CHILD_INDICATOR_INHERIT

Added in API level 1

Denotes when a child indicator should inherit this bound from the generic indicator bounds

Constant Value: -1 (0xffffffff)

public static final int PACKED_POSITION_TYPE_CHILD

Added in API level 1

The packed position represents a child.

Constant Value: 1 (0x00000001)

public static final int PACKED_POSITION_TYPE_GROUP

Added in API level 1

The packed position represents a group.

Constant Value: 0 (0x00000000)

public static final int PACKED_POSITION_TYPE_NULL

Added in API level 1

The packed position represents a neither/null/no preference.

Constant Value: 2 (0x00000002)

public static final long PACKED_POSITION_VALUE_NULL

Added in API level 1

The value for a packed position that represents neither/null/no preference. This value is not otherwise possible since a group type (first bit 0) should not have a child position filled.

Constant Value: 4294967295 (0x00000000ffffffff)

Public Constructors

public ExpandableListView (Context context)

Added in API level 1

public ExpandableListView (Context context, AttributeSet attrs)

Added in API level 1

public ExpandableListView (Context context, AttributeSet attrs, int defStyle)

Added in API level 1

Public Methods

public boolean collapseGroup (int groupPos)

Added in API level 1

Collapse a group in the grouped list view

Parameters
groupPos position of the group to collapse
Returns
  • True if the group was collapsed, false otherwise (if the group was already collapsed, this will return false)

public boolean expandGroup (int groupPos)

Added in API level 1

Expand a group in the grouped list view

Parameters
groupPos the group to be expanded
Returns
  • True if the group was expanded, false otherwise (if the group was already expanded, this will return false)

public boolean expandGroup (int groupPos, boolean animate)

Added in API level 14

Expand a group in the grouped list view

Parameters
groupPos the group to be expanded
animate true if the expanding group should be animated in
Returns
  • True if the group was expanded, false otherwise (if the group was already expanded, this will return false)

public ListAdapter getAdapter ()

Added in API level 1

This method should not be used, use getExpandableListAdapter().

Returns
  • The adapter currently used to display data in this ListView.

public ExpandableListAdapter getExpandableListAdapter ()

Added in API level 1

Gets the adapter that provides data to this view.

Returns
  • The adapter that provides data to this view.

public long getExpandableListPosition (int flatListPosition)

Added in API level 1

Converts a flat list position (the raw position of an item (child or group) in the list) to a group and/or child position (represented in a packed position). This is useful in situations where the caller needs to use the underlying ListView's methods. Use getPackedPositionType(long) , getPackedPositionChild(long), getPackedPositionGroup(long) to unpack.

Parameters
flatListPosition The flat list position to be converted.
Returns
  • The group and/or child position for the given flat list position in packed position representation. #PACKED_POSITION_VALUE_NULL if the position corresponds to a header or a footer item.

public int getFlatListPosition (long packedPosition)

Added in API level 1

Converts a group and/or child position to a flat list position. This is useful in situations where the caller needs to use the underlying ListView's methods.

Parameters
packedPosition The group and/or child positions to be converted in packed position representation. Use getPackedPositionForChild(int, int) or getPackedPositionForGroup(int).
Returns
  • The flat list position for the given child or group.

public static int getPackedPositionChild (long packedPosition)

Added in API level 1

Gets the child position from a packed position that is of PACKED_POSITION_TYPE_CHILD type (use getPackedPositionType(long)). To get the group that this child belongs to, use getPackedPositionGroup(long). See getPackedPositionForChild(int, int).

Parameters
packedPosition The packed position from which the child position will be returned.
Returns
  • The child position portion of the packed position. If this does not contain a child, returns -1.

public static long getPackedPositionForChild (int groupPosition, int childPosition)

Added in API level 1

Returns the packed position representation of a child's position.

In general, a packed position should be used in situations where the position given to/returned from an ExpandableListAdapter or ExpandableListView method can either be a child or group. The two positions are packed into a single long which can be unpacked using getPackedPositionChild(long), getPackedPositionGroup(long), and getPackedPositionType(long).

Parameters
groupPosition The child's parent group's position.
childPosition The child position within the group.
Returns
  • The packed position representation of the child (and parent group).

public static long getPackedPositionForGroup (int groupPosition)

Added in API level 1

Returns the packed position representation of a group's position. See getPackedPositionForChild(int, int).

Parameters
groupPosition The child's parent group's position.
Returns
  • The packed position representation of the group.

public static int getPackedPositionGroup (long packedPosition)

Added in API level 1

Gets the group position from a packed position. See getPackedPositionForChild(int, int).

Parameters
packedPosition The packed position from which the group position will be returned.
Returns
  • The group position portion of the packed position. If this does not contain a group, returns -1.

public static int getPackedPositionType (long packedPosition)

Added in API level 1

Gets the type of a packed position. See getPackedPositionForChild(int, int).

Parameters
packedPosition The packed position for which to return the type.
Returns

public long getSelectedId ()

Added in API level 1

Gets the ID of the currently selected group or child. Can return -1 if no selection.

Returns
  • The ID of the currently selected group or child. -1 if no selection.

public long getSelectedPosition ()

Added in API level 1

Gets the position of the currently selected group or child (along with its type). Can return PACKED_POSITION_VALUE_NULL if no selection.

Returns
  • A packed position containing the currently selected group or child's position and type. #PACKED_POSITION_VALUE_NULL if no selection or if selection is on a header or a footer item.

public boolean isGroupExpanded (int groupPosition)

Added in API level 1

Whether the given group is currently expanded.

Parameters
groupPosition The group to check.
Returns
  • Whether the group is currently expanded.

public void onInitializeAccessibilityEvent (AccessibilityEvent event)

Added in API level 14

Initializes an AccessibilityEvent with information about this View which is the event source. In other words, the source of an accessibility event is the view whose state change triggered firing the event.

Example: Setting the password property of an event in addition to properties set by the super implementation:

 public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
     super.onInitializeAccessibilityEvent(event);
     event.setPassword(true);
 }

If an View.AccessibilityDelegate has been specified via calling setAccessibilityDelegate(AccessibilityDelegate) its onInitializeAccessibilityEvent(View, AccessibilityEvent) is responsible for handling this call.

Note: Always call the super implementation before adding information to the event, in case the default implementation has basic information to add.

Parameters
event The event to initialize.

public void onInitializeAccessibilityNodeInfo (AccessibilityNodeInfo info)

Added in API level 14

Initializes an AccessibilityNodeInfo with information about this view. The base implementation sets:

Subclasses should override this method, call the super implementation, and set additional attributes.

If an View.AccessibilityDelegate has been specified via calling setAccessibilityDelegate(AccessibilityDelegate) its onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfo) is responsible for handling this call.

Parameters
info The instance to initialize.

public void onRestoreInstanceState (Parcelable state)

Added in API level 1

Hook allowing a view to re-apply a representation of its internal state that had previously been generated by onSaveInstanceState(). This function will never be called with a null state.

Parameters
state The frozen state that had previously been returned by onSaveInstanceState().

public void onRtlPropertiesChanged (int layoutDirection)

Added in API level 17

Called when any RTL property (layout direction or text direction or text alignment) has been changed. Subclasses need to override this method to take care of cached information that depends on the resolved layout direction, or to inform child views that inherit their layout direction. The default implementation does nothing.

Parameters
layoutDirection the direction of the layout

public Parcelable onSaveInstanceState ()

Added in API level 1

Hook allowing a view to generate a representation of its internal state that can later be used to create a new instance with that same state. This state should only contain information that is not persistent or can not be reconstructed later. For example, you will never store your current position on screen because that will be computed again when a new instance of the view is placed in its view hierarchy.

Some examples of things you may store here: the current cursor position in a text view (but usually not the text itself since that is stored in a content provider or other persistent storage), the currently selected item in a list view.

Returns
  • Returns a Parcelable object containing the view's current dynamic state, or null if there is nothing interesting to save. The default implementation returns null.

public boolean performItemClick (View v, int position, long id)

Added in API level 1

Call the OnItemClickListener, if it is defined. Performs all normal actions associated with clicking: reporting accessibility event, playing a sound, etc.

Parameters
v The view within the AdapterView that was clicked.
position The position of the view in the adapter.
id The row id of the item that was clicked.
Returns
  • True if there was an assigned OnItemClickListener that was called, false otherwise is returned.

public void setAdapter (ExpandableListAdapter adapter)

Added in API level 1

Sets the adapter that provides data to this view.

Parameters
adapter The adapter that provides data to this view.

public void setAdapter (ListAdapter adapter)

Added in API level 1

This overloaded method should not be used, instead use setAdapter(ExpandableListAdapter).

Sets the data behind this ListView. The adapter passed to this method may be wrapped by a WrapperListAdapter, depending on the ListView features currently in use. For instance, adding headers and/or footers will cause the adapter to be wrapped.

Parameters
adapter The ListAdapter which is responsible for maintaining the data backing this list and for producing a view to represent an item in that data set.

public void setChildDivider (Drawable childDivider)

Added in API level 1

Sets the drawable that will be drawn adjacent to every child in the list. This will be drawn using the same height as the normal divider (setDivider(Drawable)) or if it does not have an intrinsic height, the height set by setDividerHeight(int).

Parameters
childDivider The drawable to use.

public void setChildIndicator (Drawable childIndicator)

Added in API level 1

Sets the indicator to be drawn next to a child.

Parameters
childIndicator The drawable to be used as an indicator. If the child is the last child for a group, the state state_last will be set.

public void setChildIndicatorBounds (int left, int right)

Added in API level 1

Sets the drawing bounds for the child indicator. For either, you can specify CHILD_INDICATOR_INHERIT to use inherit from the general indicator's bounds.

Parameters
left The left position (relative to the left bounds of this View) to start drawing the indicator.
right The right position (relative to the left bounds of this View) to end the drawing of the indicator.

public void setChildIndicatorBoundsRelative (int start, int end)

Added in API level 18

Sets the relative drawing bounds for the child indicator. For either, you can specify CHILD_INDICATOR_INHERIT to use inherit from the general indicator's bounds.

Parameters
start The start position (relative to the start bounds of this View) to start drawing the indicator.
end The end position (relative to the end bounds of this View) to end the drawing of the indicator.

public void setGroupIndicator (Drawable groupIndicator)

Added in API level 1

Sets the indicator to be drawn next to a group.

Parameters
groupIndicator The drawable to be used as an indicator. If the group is empty, the state state_empty will be set. If the group is expanded, the state state_expanded will be set.

public void setIndicatorBounds (int left, int right)

Added in API level 1

Sets the drawing bounds for the indicators (at minimum, the group indicator is affected by this; the child indicator is affected by this if the child indicator bounds are set to inherit).

Parameters
left The left position (relative to the left bounds of this View) to start drawing the indicator.
right The right position (relative to the left bounds of this View) to end the drawing of the indicator.

public void setIndicatorBoundsRelative (int start, int end)

Added in API level 18

Sets the relative drawing bounds for the indicators (at minimum, the group indicator is affected by this; the child indicator is affected by this if the child indicator bounds are set to inherit).

Parameters
start The start position (relative to the start bounds of this View) to start drawing the indicator.
end The end position (relative to the end bounds of this View) to end the drawing of the indicator.

public void setOnChildClickListener (ExpandableListView.OnChildClickListener onChildClickListener)

Added in API level 1

public void setOnGroupClickListener (ExpandableListView.OnGroupClickListener onGroupClickListener)

Added in API level 1

public void setOnGroupCollapseListener (ExpandableListView.OnGroupCollapseListener onGroupCollapseListener)

Added in API level 1

public void setOnGroupExpandListener (ExpandableListView.OnGroupExpandListener onGroupExpandListener)

Added in API level 1

public void setOnItemClickListener (AdapterView.OnItemClickListener l)

Added in API level 1

Register a callback to be invoked when an item has been clicked and the caller prefers to receive a ListView-style position instead of a group and/or child position. In most cases, the caller should use setOnGroupClickListener(ExpandableListView.OnGroupClickListener) and/or setOnChildClickListener(ExpandableListView.OnChildClickListener).

Register a callback to be invoked when an item in this AdapterView has been clicked.

Parameters
l The callback that will be invoked.

public boolean setSelectedChild (int groupPosition, int childPosition, boolean shouldExpandGroup)

Added in API level 1

Sets the selection to the specified child. If the child is in a collapsed group, the group will only be expanded and child subsequently selected if shouldExpandGroup is set to true, otherwise the method will return false.

Parameters
groupPosition The position of the group that contains the child.
childPosition The position of the child within the group.
shouldExpandGroup Whether the child's group should be expanded if it is collapsed.
Returns
  • Whether the selection was successfully set on the child.

public void setSelectedGroup (int groupPosition)

Added in API level 1

Sets the selection to the specified group.

Parameters
groupPosition The position of the group that should be selected.

Protected Methods

protected void dispatchDraw (Canvas canvas)

Added in API level 1

Called by draw to draw the child views. This may be overridden by derived classes to gain control just before its children are drawn (but after its own view has been drawn).

Parameters
canvas the canvas on which to draw the view