ListPopupWindow


public class ListPopupWindow


Static library support version of the framework's android.widget.ListPopupWindow. Used to write apps that run on platforms prior to Android L. When running on Android L or above, this implementation is still used; it does not try to switch to the framework's implementation. See the framework SDK documentation for a class overview.

See also
ListPopupWindow

Summary

Constants

static final int

Mode for setInputMethodMode: the requirements for the input method should be based on the focusability of the popup.

static final int

Mode for setInputMethodMode: this popup always needs to work with an input method, regardless of whether it is focusable.

static final int

Mode for setInputMethodMode: this popup never needs to work with an input method, regardless of whether it is focusable.

static final int

Alias for MATCH_PARENT.

static final int

The provided prompt view should appear above list content.

static final int

The provided prompt view should appear below list content.

static final int

Alias for WRAP_CONTENT.

Public constructors

Create a new, empty popup window capable of displaying items from a ListAdapter.

Create a new, empty popup window capable of displaying items from a ListAdapter.

ListPopupWindow(
    @NonNull Context context,
    @Nullable AttributeSet attrs,
    @AttrRes int defStyleAttr
)

Create a new, empty popup window capable of displaying items from a ListAdapter.

ListPopupWindow(
    @NonNull Context context,
    @Nullable AttributeSet attrs,
    @AttrRes int defStyleAttr,
    @StyleRes int defStyleRes
)

Create a new, empty popup window capable of displaying items from a ListAdapter.

Public methods

void

Clear any current list selection.

View.OnTouchListener

Returns an OnTouchListener that can be added to the source view to implement drag-to-open behavior.

void

Dismiss the popup window.

@Nullable View

Returns the view that will be used to anchor this popup.

@StyleRes int

Returns the animation style that will be used when the popup window is shown or dismissed.

@Nullable Drawable
@Nullable Rect

Return custom anchor-relative bounds of the popup's transition epicenter

int
int
int

Return the current value in setInputMethodMode.

@Nullable ListView
int
@Nullable Object
long
int
@Nullable View
int

Returns the current value in setSoftInputMode.

int
int
boolean
boolean

Returns whether the popup window will be modal when shown.

boolean
boolean
onKeyDown(int keyCode, @NonNull KeyEvent event)

Filter key down events.

boolean
onKeyPreIme(int keyCode, @NonNull KeyEvent event)

Filter pre-IME key events.

boolean
onKeyUp(int keyCode, @NonNull KeyEvent event)

Filter key up events.

boolean
performItemClick(int position)

Perform an item click operation on the specified list adapter position.

void

Post a show call to the UI thread.

void

Sets the adapter that provides the data and the views to represent the data in this popup window.

void

Sets the popup's anchor view.

void
setAnimationStyle(@StyleRes int animationStyle)

Set an animation style to use when the popup window is shown or dismissed.

void

Sets a drawable to be the background for the popup window.

void
setContentWidth(int width)

Sets the width of the popup window by the size of its content.

void
setDropDownGravity(int gravity)

Set the gravity of the dropdown list.

void

Specifies the custom anchor-relative bounds of the popup's transition epicenter.

void
setHeight(int height)

Sets the height of the popup window in pixels.

void
setHorizontalOffset(int offset)

Set the horizontal offset of this popup from its anchor view in pixels.

void

Control how the popup operates with an input method: one of INPUT_METHOD_FROM_FOCUSABLE, INPUT_METHOD_NEEDED, or INPUT_METHOD_NOT_NEEDED.

void

Sets a drawable to use as the list item selector.

void
setModal(boolean modal)

Set whether this window should be modal when shown.

void

Set a listener to receive a callback when the popup is dismissed.

void

Sets a listener to receive events when a list item is clicked.

void

Sets a listener to receive events when a list item is selected.

void
setPromptPosition(int position)

Set where the optional prompt view should appear.

void

Set a view to act as a user prompt for this popup window.

void
setSelection(int position)

Set the selected position of the list.

void
setSoftInputMode(int mode)

Sets the operating mode for the soft input area.

void
setVerticalOffset(int offset)

Set the vertical offset of this popup from its anchor view in pixels.

void
setWidth(int width)

Sets the width of the popup window in pixels.

void
setWindowLayoutType(int layoutType)

Set the layout type for this popup window.

void

Show the popup list.

Constants

INPUT_METHOD_FROM_FOCUSABLE

Added in 1.1.0
public static final int INPUT_METHOD_FROM_FOCUSABLE = 0

Mode for setInputMethodMode: the requirements for the input method should be based on the focusability of the popup. That is if it is focusable than it needs to work with the input method, else it doesn't.

INPUT_METHOD_NEEDED

Added in 1.1.0
public static final int INPUT_METHOD_NEEDED = 1

Mode for setInputMethodMode: this popup always needs to work with an input method, regardless of whether it is focusable. This means that it will always be displayed so that the user can also operate the input method while it is shown.

INPUT_METHOD_NOT_NEEDED

Added in 1.1.0
public static final int INPUT_METHOD_NOT_NEEDED = 2

Mode for setInputMethodMode: this popup never needs to work with an input method, regardless of whether it is focusable. This means that it will always be displayed to use as much space on the screen as needed, regardless of whether this covers the input method.

MATCH_PARENT

Added in 1.1.0
public static final int MATCH_PARENT = -1

Alias for MATCH_PARENT. If used to specify a popup width, the popup will match the width of the anchor view. If used to specify a popup height, the popup will fill available space.

POSITION_PROMPT_ABOVE

Added in 1.1.0
public static final int POSITION_PROMPT_ABOVE = 0

The provided prompt view should appear above list content.

POSITION_PROMPT_BELOW

Added in 1.1.0
public static final int POSITION_PROMPT_BELOW = 1

The provided prompt view should appear below list content.

WRAP_CONTENT

Added in 1.1.0
public static final int WRAP_CONTENT = -2

Alias for WRAP_CONTENT. If used to specify a popup width, the popup will use the width of its content.

Public constructors

ListPopupWindow

Added in 1.1.0
public ListPopupWindow(@NonNull Context context)

Create a new, empty popup window capable of displaying items from a ListAdapter. Backgrounds should be set using setBackgroundDrawable.

Parameters
@NonNull Context context

Context used for contained views.

ListPopupWindow

Added in 1.1.0
public ListPopupWindow(@NonNull Context context, @Nullable AttributeSet attrs)

Create a new, empty popup window capable of displaying items from a ListAdapter. Backgrounds should be set using setBackgroundDrawable.

Parameters
@NonNull Context context

Context used for contained views.

@Nullable AttributeSet attrs

Attributes from inflating parent views used to style the popup.

ListPopupWindow

Added in 1.1.0
public ListPopupWindow(
    @NonNull Context context,
    @Nullable AttributeSet attrs,
    @AttrRes int defStyleAttr
)

Create a new, empty popup window capable of displaying items from a ListAdapter. Backgrounds should be set using setBackgroundDrawable.

Parameters
@NonNull Context context

Context used for contained views.

@Nullable AttributeSet attrs

Attributes from inflating parent views used to style the popup.

@AttrRes int defStyleAttr

Default style attribute to use for popup content.

ListPopupWindow

Added in 1.1.0
public ListPopupWindow(
    @NonNull Context context,
    @Nullable AttributeSet attrs,
    @AttrRes int defStyleAttr,
    @StyleRes int defStyleRes
)

Create a new, empty popup window capable of displaying items from a ListAdapter. Backgrounds should be set using setBackgroundDrawable.

Parameters
@NonNull Context context

Context used for contained views.

@Nullable AttributeSet attrs

Attributes from inflating parent views used to style the popup.

@AttrRes int defStyleAttr

Style attribute to read for default styling of popup content.

@StyleRes int defStyleRes

Style resource ID to use for default styling of popup content.

Public methods

clearListSelection

Added in 1.1.0
public void clearListSelection()

Clear any current list selection. Only valid when isShowing == true.

createDragToOpenListener

Added in 1.1.0
public View.OnTouchListener createDragToOpenListener(View src)

Returns an OnTouchListener that can be added to the source view to implement drag-to-open behavior. Generally, the source view should be the same view that was passed to setAnchorView.

When the listener is set on a view, touching that view and dragging outside of its bounds will open the popup window. Lifting will select the currently touched list item.

Example usage:

ListPopupWindow myPopup = new ListPopupWindow(context);
myPopup.setAnchor(myAnchor);
OnTouchListener dragListener = myPopup.createDragToOpenListener(myAnchor);
myAnchor.setOnTouchListener(dragListener);
Parameters
View src

the view on which the resulting listener will be set

Returns
View.OnTouchListener

a touch listener that controls drag-to-open behavior

dismiss

Added in 1.1.0
public void dismiss()

Dismiss the popup window.

getAnchorView

Added in 1.1.0
public @Nullable View getAnchorView()

Returns the view that will be used to anchor this popup.

Returns
@Nullable View

The popup's anchor view

getAnimationStyle

Added in 1.1.0
public @StyleRes int getAnimationStyle()

Returns the animation style that will be used when the popup window is shown or dismissed.

Returns
@StyleRes int

Animation style that will be used.

getBackground

Added in 1.1.0
public @Nullable Drawable getBackground()
Returns
@Nullable Drawable

The background drawable for the popup window.

getEpicenterBounds

Added in 1.1.0
public @Nullable Rect getEpicenterBounds()

Return custom anchor-relative bounds of the popup's transition epicenter

Returns
@Nullable Rect

anchor-relative bounds, or @null if not set

getHeight

Added in 1.1.0
public int getHeight()
Returns
int

The height of the popup window in pixels.

getHorizontalOffset

Added in 1.1.0
public int getHorizontalOffset()
Returns
int

The horizontal offset of the popup from its anchor in pixels.

getInputMethodMode

Added in 1.1.0
public int getInputMethodMode()

Return the current value in setInputMethodMode.

getListView

Added in 1.1.0
public @Nullable ListView getListView()
Returns
@Nullable ListView

The ListView displayed within the popup window. Only valid when isShowing == true.

getPromptPosition

Added in 1.1.0
public int getPromptPosition()
Returns
int

Where the optional prompt view should appear.

getSelectedItem

Added in 1.1.0
public @Nullable Object getSelectedItem()
Returns
@Nullable Object

The currently selected item or null if the popup is not showing.

getSelectedItemId

Added in 1.1.0
public long getSelectedItemId()
Returns
long

The ID of the currently selected item or INVALID_ROW_ID if isShowing == false.

getSelectedItemPosition

Added in 1.1.0
public int getSelectedItemPosition()
Returns
int

The position of the currently selected item or INVALID_POSITION if isShowing == false.

getSelectedView

Added in 1.1.0
public @Nullable View getSelectedView()
Returns
@Nullable View

The View for the currently selected item or null if isShowing == false.

See also
getSelectedView

getSoftInputMode

Added in 1.1.0
public int getSoftInputMode()

Returns the current value in setSoftInputMode.

getVerticalOffset

Added in 1.1.0
public int getVerticalOffset()
Returns
int

The vertical offset of the popup from its anchor in pixels.

getWidth

Added in 1.1.0
public int getWidth()
Returns
int

The width of the popup window in pixels.

isInputMethodNotNeeded

Added in 1.1.0
public boolean isInputMethodNotNeeded()
Returns
boolean

true if this popup is configured to assume the user does not need to interact with the IME while it is showing, false otherwise.

isModal

Added in 1.1.0
public boolean isModal()

Returns whether the popup window will be modal when shown.

Returns
boolean

true if the popup window will be modal, false otherwise.

isShowing

Added in 1.1.0
public boolean isShowing()
Returns
boolean

true if the popup is currently showing, false otherwise.

onKeyDown

Added in 1.1.0
public boolean onKeyDown(int keyCode, @NonNull KeyEvent event)

Filter key down events. By forwarding key down events to this function, views using non-modal ListPopupWindow can have it handle key selection of items.

Parameters
int keyCode

keyCode param passed to the host view's onKeyDown

@NonNull KeyEvent event

event param passed to the host view's onKeyDown

Returns
boolean

true if the event was handled, false if it was ignored.

See also
setModal
onKeyUp

onKeyPreIme

Added in 1.1.0
public boolean onKeyPreIme(int keyCode, @NonNull KeyEvent event)

Filter pre-IME key events. By forwarding onKeyPreIme events to this function, views using ListPopupWindow can have it dismiss the popup when the back key is pressed.

Parameters
int keyCode

keyCode param passed to the host view's onKeyPreIme

@NonNull KeyEvent event

event param passed to the host view's onKeyPreIme

Returns
boolean

true if the event was handled, false if it was ignored.

See also
setModal

onKeyUp

Added in 1.1.0
public boolean onKeyUp(int keyCode, @NonNull KeyEvent event)

Filter key up events. By forwarding key up events to this function, views using non-modal ListPopupWindow can have it handle key selection of items.

Parameters
int keyCode

keyCode param passed to the host view's onKeyUp

@NonNull KeyEvent event

event param passed to the host view's onKeyUp

Returns
boolean

true if the event was handled, false if it was ignored.

See also
setModal
onKeyDown

performItemClick

Added in 1.1.0
public boolean performItemClick(int position)

Perform an item click operation on the specified list adapter position.

Parameters
int position

Adapter position for performing the click

Returns
boolean

true if the click action could be performed, false if not. (e.g. if the popup was not showing, this method would return false.)

postShow

Added in 1.1.0
public void postShow()

Post a show call to the UI thread.

setAdapter

Added in 1.1.0
public void setAdapter(@Nullable ListAdapter adapter)

Sets the adapter that provides the data and the views to represent the data in this popup window.

Parameters
@Nullable ListAdapter adapter

The adapter to use to create this window's content.

setAnchorView

Added in 1.1.0
public void setAnchorView(@Nullable View anchor)

Sets the popup's anchor view. This popup will always be positioned relative to the anchor view when shown.

Parameters
@Nullable View anchor

The view to use as an anchor.

setAnimationStyle

Added in 1.1.0
public void setAnimationStyle(@StyleRes int animationStyle)

Set an animation style to use when the popup window is shown or dismissed.

Parameters
@StyleRes int animationStyle

Animation style to use.

setBackgroundDrawable

Added in 1.1.0
public void setBackgroundDrawable(@Nullable Drawable d)

Sets a drawable to be the background for the popup window.

Parameters
@Nullable Drawable d

A drawable to set as the background.

setContentWidth

Added in 1.1.0
public void setContentWidth(int width)

Sets the width of the popup window by the size of its content. The final width may be larger to accommodate styled window dressing.

Parameters
int width

Desired width of content in pixels.

setDropDownGravity

Added in 1.1.0
public void setDropDownGravity(int gravity)

Set the gravity of the dropdown list. This is commonly used to set gravity to START or END for alignment with the anchor.

Parameters
int gravity

Gravity value to use

setEpicenterBounds

Added in 1.1.0
public void setEpicenterBounds(@Nullable Rect bounds)

Specifies the custom anchor-relative bounds of the popup's transition epicenter.

Parameters
@Nullable Rect bounds

anchor-relative bounds or null to use default epicenter

setHeight

Added in 1.1.0
public void setHeight(int height)

Sets the height of the popup window in pixels. Can also be MATCH_PARENT.

Parameters
int height

Height of the popup window must be a positive value, MATCH_PARENT, or WRAP_CONTENT.

Throws
java.lang.IllegalArgumentException

if height is set to negative value

setHorizontalOffset

Added in 1.1.0
public void setHorizontalOffset(int offset)

Set the horizontal offset of this popup from its anchor view in pixels.

Parameters
int offset

The horizontal offset of the popup from its anchor.

setInputMethodMode

Added in 1.1.0
public void setInputMethodMode(int mode)

Control how the popup operates with an input method: one of INPUT_METHOD_FROM_FOCUSABLE, INPUT_METHOD_NEEDED, or INPUT_METHOD_NOT_NEEDED.

If the popup is showing, calling this method will take effect only the next time the popup is shown or through a manual call to the show method.

setListSelector

Added in 1.1.0
public void setListSelector(Drawable selector)

Sets a drawable to use as the list item selector.

Parameters
Drawable selector

List selector drawable to use in the popup.

setModal

Added in 1.1.0
public void setModal(boolean modal)

Set whether this window should be modal when shown.

If a popup window is modal, it will receive all touch and key input. If the user touches outside the popup window's content area the popup window will be dismissed.

Parameters
boolean modal

true if the popup window should be modal, false otherwise.

setOnDismissListener

Added in 1.1.0
public void setOnDismissListener(@Nullable PopupWindow.OnDismissListener listener)

Set a listener to receive a callback when the popup is dismissed.

Parameters
@Nullable PopupWindow.OnDismissListener listener

Listener that will be notified when the popup is dismissed.

setOnItemClickListener

Added in 1.1.0
public void setOnItemClickListener(
    @Nullable AdapterView.OnItemClickListener clickListener
)

Sets a listener to receive events when a list item is clicked.

Parameters
@Nullable AdapterView.OnItemClickListener clickListener

Listener to register

setOnItemSelectedListener

Added in 1.1.0
public void setOnItemSelectedListener(
    @Nullable AdapterView.OnItemSelectedListener selectedListener
)

Sets a listener to receive events when a list item is selected.

Parameters
@Nullable AdapterView.OnItemSelectedListener selectedListener

Listener to register.

setPromptPosition

Added in 1.1.0
public void setPromptPosition(int position)

Set where the optional prompt view should appear. The default is POSITION_PROMPT_ABOVE.

Parameters
int position

A position constant declaring where the prompt should be displayed.

setPromptView

Added in 1.1.0
public void setPromptView(@Nullable View prompt)

Set a view to act as a user prompt for this popup window. Where the prompt view will appear is controlled by setPromptPosition.

Parameters
@Nullable View prompt

View to use as an informational prompt.

setSelection

Added in 1.1.0
public void setSelection(int position)

Set the selected position of the list. Only valid when isShowing == true.

Parameters
int position

List position to set as selected.

setSoftInputMode

Added in 1.1.0
public void setSoftInputMode(int mode)

Sets the operating mode for the soft input area.

Parameters
int mode

The desired mode, see softInputMode for the full list

setVerticalOffset

Added in 1.1.0
public void setVerticalOffset(int offset)

Set the vertical offset of this popup from its anchor view in pixels.

Parameters
int offset

The vertical offset of the popup from its anchor.

setWidth

Added in 1.1.0
public void setWidth(int width)

Sets the width of the popup window in pixels. Can also be MATCH_PARENT or WRAP_CONTENT.

Parameters
int width

Width of the popup window.

setWindowLayoutType

Added in 1.1.0
public void setWindowLayoutType(int layoutType)

Set the layout type for this popup window.

See type for possible values.

Parameters
int layoutType

Layout type for this window.

See also
type

show

Added in 1.1.0
public void show()

Show the popup list. If the list is already showing, this method will recalculate the popup's size and position.