Android APIs
public class

AutoCompleteTextView

extends EditText
implements Filter.FilterListener
java.lang.Object
   ↳ android.view.View
     ↳ android.widget.TextView
       ↳ android.widget.EditText
         ↳ android.widget.AutoCompleteTextView
Known Direct Subclasses

Class Overview

An editable text view that shows completion suggestions automatically while the user is typing. The list of suggestions is displayed in a drop down menu from which the user can choose an item to replace the content of the edit box with.

The drop down can be dismissed at any time by pressing the back key or, if no item is selected in the drop down, by pressing the enter/dpad center key.

The list of suggestions is obtained from a data adapter and appears only after a given number of characters defined by the threshold.

The following code snippet shows how to create a text view which suggests various countries names while the user is typing:

 public class CountriesActivity extends Activity {
     protected void onCreate(Bundle icicle) {
         super.onCreate(icicle);
         setContentView(R.layout.countries);

         ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                 android.R.layout.simple_dropdown_item_1line, COUNTRIES);
         AutoCompleteTextView textView = (AutoCompleteTextView)
                 findViewById(R.id.countries_list);
         textView.setAdapter(adapter);
     }

     private static final String[] COUNTRIES = new String[] {
         "Belgium", "France", "Italy", "Germany", "Spain"
     };
 }
 

See the Text Fields guide.

Summary

Nested Classes
interface AutoCompleteTextView.OnDismissListener Listener to respond to the AutoCompleteTextView's completion list being dismissed. 
interface AutoCompleteTextView.Validator This interface is used to make sure that the text entered in this TextView complies to a certain format. 
XML Attributes
Attribute Name Related Method Description
android:completionHint setCompletionHint(CharSequence) Defines the hint displayed in the drop down menu. 
android:completionHintView Defines the hint view displayed in the drop down menu. 
android:completionThreshold setThreshold(int) Defines the number of characters that the user must type before completion suggestions are displayed in a drop down menu. 
android:dropDownAnchor setDropDownAnchor(int) View to anchor the auto-complete dropdown to. 
android:dropDownHeight setDropDownHeight(int) Specifies the basic height of the dropdown. 
android:dropDownHorizontalOffset Amount of pixels by which the drop down should be offset horizontally. 
android:dropDownSelector Selector in a drop down list. 
android:dropDownVerticalOffset Amount of pixels by which the drop down should be offset vertically. 
android:dropDownWidth setDropDownWidth(int) Specifies the basic width of the dropdown. 
android:popupBackground setDropDownBackgroundResource(int)  
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Inherited XML Attributes
From class android.widget.TextView
From class android.view.View
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Inherited Constants
From class android.view.View
[Expand]
Inherited Fields
From class android.view.View
Public Constructors
AutoCompleteTextView(Context context)
AutoCompleteTextView(Context context, AttributeSet attrs)
AutoCompleteTextView(Context context, AttributeSet attrs, int defStyle)
Public Methods
void clearListSelection()

Clear the list selection.

void dismissDropDown()

Closes the drop down if present on screen.

boolean enoughToFilter()
Returns true if the amount of text in the field meets or exceeds the getThreshold() requirement.
ListAdapter getAdapter()

Returns a filterable list adapter used for auto completion.

CharSequence getCompletionHint()
Gets the optional hint text displayed at the bottom of the the matching list.
int getDropDownAnchor()

Returns the id for the view that the auto-complete drop down list is anchored to.

Drawable getDropDownBackground()

Gets the background of the auto-complete drop-down list.

int getDropDownHeight()

Returns the current height for the auto-complete drop down list.

int getDropDownHorizontalOffset()

Gets the horizontal offset used for the auto-complete drop-down list.

int getDropDownVerticalOffset()

Gets the vertical offset used for the auto-complete drop-down list.

int getDropDownWidth()

Returns the current width for the auto-complete drop down list.

AdapterView.OnItemClickListener getItemClickListener()
This method was deprecated in API level 3. Use getOnItemClickListener() intead
AdapterView.OnItemSelectedListener getItemSelectedListener()
This method was deprecated in API level 3. Use getOnItemSelectedListener() intead
int getListSelection()
Get the position of the dropdown view selection, if there is one.
AdapterView.OnItemClickListener getOnItemClickListener()

Returns the listener that is notified whenever the user clicks an item in the drop down list.

AdapterView.OnItemSelectedListener getOnItemSelectedListener()

Returns the listener that is notified whenever the user selects an item in the drop down list.

int getThreshold()

Returns the number of characters the user must type before the drop down list is shown.

AutoCompleteTextView.Validator getValidator()
Returns the Validator set with setValidator(AutoCompleteTextView.Validator), or null if it was not set.
boolean isPerformingCompletion()
Identifies whether the view is currently performing a text completion, so subclasses can decide whether to respond to text changed events.
boolean isPopupShowing()

Indicates whether the popup menu is showing.

void onCommitCompletion(CompletionInfo completion)
Called by the framework in response to a text completion from the current input method, provided by it calling InputConnection.commitCompletion().
void onFilterComplete(int count)

Notifies the end of a filtering operation.

boolean onKeyDown(int keyCode, KeyEvent event)
Default implementation of KeyEvent.Callback.onKeyDown(): perform press of the view when KEYCODE_DPAD_CENTER or KEYCODE_ENTER is released, if the view is enabled and clickable.
boolean onKeyPreIme(int keyCode, KeyEvent event)
Handle a key event before it is processed by any input method associated with the view hierarchy.
boolean onKeyUp(int keyCode, KeyEvent event)
Default implementation of KeyEvent.Callback.onKeyUp(): perform clicking of the view when KEYCODE_DPAD_CENTER or KEYCODE_ENTER is released.
void onWindowFocusChanged(boolean hasWindowFocus)
Called when the window containing this view gains or loses focus.
void performCompletion()

Performs the text completion by converting the selected item from the drop down list into a string, replacing the text box's content with this string and finally dismissing the drop down menu.

void performValidation()
If a validator was set on this view and the current string is not valid, ask the validator to fix it.
<T extends ListAdapter & Filterable> void setAdapter(T adapter)

Changes the list of data used for auto completion.

void setCompletionHint(CharSequence hint)

Sets the optional hint text that is displayed at the bottom of the the matching list.

void setDropDownAnchor(int id)

Sets the view to which the auto-complete drop down list should anchor.

void setDropDownBackgroundDrawable(Drawable d)

Sets the background of the auto-complete drop-down list.

void setDropDownBackgroundResource(int id)

Sets the background of the auto-complete drop-down list.

void setDropDownHeight(int height)

Sets the current height for the auto-complete drop down list.

void setDropDownHorizontalOffset(int offset)

Sets the horizontal offset used for the auto-complete drop-down list.

void setDropDownVerticalOffset(int offset)

Sets the vertical offset used for the auto-complete drop-down list.

void setDropDownWidth(int width)

Sets the current width for the auto-complete drop down list.

void setListSelection(int position)
Set the position of the dropdown view selection.
void setOnClickListener(View.OnClickListener listener)
Register a callback to be invoked when this view is clicked.
void setOnDismissListener(AutoCompleteTextView.OnDismissListener dismissListener)
Set a listener that will be invoked whenever the AutoCompleteTextView's list of completions is dismissed.
void setOnItemClickListener(AdapterView.OnItemClickListener l)

Sets the listener that will be notified when the user clicks an item in the drop down list.

void setOnItemSelectedListener(AdapterView.OnItemSelectedListener l)

Sets the listener that will be notified when the user selects an item in the drop down list.

void setText(CharSequence text, boolean filter)
Like setText(CharSequence), except that it can disable filtering.
void setThreshold(int threshold)

Specifies the minimum number of characters the user has to type in the edit box before the drop down list is shown.

void setValidator(AutoCompleteTextView.Validator validator)
Sets the validator used to perform text validation.
void showDropDown()

Displays the drop down on screen.

Protected Methods
CharSequence convertSelectionToString(Object selectedItem)

Converts the selected item from the drop down list into a sequence of character that can be used in the edit box.

Filter getFilter()
Returns the Filter obtained from getFilter(), or null if setAdapter(T) was not called with a Filterable.
void onAttachedToWindow()
This is called when the view is attached to a window.
void onDetachedFromWindow()
This is called when the view is detached from a window.
void onDisplayHint(int hint)
Gives this view a hint about whether is displayed or not.
void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect)
Called by the view system when the focus state of this view changes.
void performFiltering(CharSequence text, int keyCode)

Starts filtering the content of the drop down list.

void replaceText(CharSequence text)

Performs the text completion by replacing the current text by the selected item.

boolean setFrame(int l, int t, int r, int b)
Assign a size and position to this view.
[Expand]
Inherited Methods
From class android.widget.EditText
From class android.widget.TextView
From class android.view.View
From class java.lang.Object
From interface android.graphics.drawable.Drawable.Callback
From interface android.view.KeyEvent.Callback
From interface android.view.ViewTreeObserver.OnPreDrawListener
From interface android.view.accessibility.AccessibilityEventSource
From interface android.widget.Filter.FilterListener

XML Attributes

android:completionHint

Defines the hint displayed in the drop down menu.

Must be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character.

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 completionHint.

android:completionHintView

Defines the hint view displayed in the drop down menu.

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 completionHintView.

Related Methods

android:completionThreshold

Defines the number of characters that the user must type before completion suggestions are displayed in a drop down menu.

Must be an integer value, such as "100".

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 completionThreshold.

Related Methods

android:dropDownAnchor

View to anchor the auto-complete dropdown to. If not specified, the text view itself is used.

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 dropDownAnchor.

Related Methods

android:dropDownHeight

Specifies the basic height of the dropdown. Its value may be a dimension (such as "12dip") for a constant height, fill_parent or match_parent to fill the height of the screen, or wrap_content to match the height of the content of the drop down.

May 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.

May be one of the following constant values.

ConstantValueDescription
fill_parent-1 The dropdown should fit the height of the screen. This constant is deprecated starting from API Level 8 and is replaced by match_parent.
match_parent-1 The dropdown should fit the height of the screen. Introduced in API Level 8.
wrap_content-2 The dropdown should fit the height of the content.

This corresponds to the global attribute resource symbol dropDownHeight.

Related Methods

android:dropDownHorizontalOffset

Amount of pixels by which the drop down should be offset horizontally.

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 dropDownHorizontalOffset.

Related Methods

android:dropDownSelector

Selector in a drop down list.

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 dropDownSelector.

Related Methods

android:dropDownVerticalOffset

Amount of pixels by which the drop down should be offset vertically.

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 dropDownVerticalOffset.

Related Methods

android:dropDownWidth

Specifies the basic width of the dropdown. Its value may be a dimension (such as "12dip") for a constant width, fill_parent or match_parent to match the width of the screen, or wrap_content to match the width of the anchored view.

May 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.

May be one of the following constant values.

ConstantValueDescription
fill_parent-1 The dropdown should fill the width of the screen. This constant is deprecated starting from API Level 8 and is replaced by match_parent.
match_parent-1 The dropdown should fit the width of the screen. Introduced in API Level 8.
wrap_content-2 The dropdown should fit the width of its anchor.

This corresponds to the global attribute resource symbol dropDownWidth.

Related Methods

android:popupBackground

Public Constructors

public AutoCompleteTextView (Context context)

Added in API level 1

public AutoCompleteTextView (Context context, AttributeSet attrs)

Added in API level 1

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

Added in API level 1

Public Methods

public void clearListSelection ()

Added in API level 3

Clear the list selection. This may only be temporary, as user input will often bring it back.

public void dismissDropDown ()

Added in API level 1

Closes the drop down if present on screen.

public boolean enoughToFilter ()

Added in API level 1

Returns true if the amount of text in the field meets or exceeds the getThreshold() requirement. You can override this to impose a different standard for when filtering will be triggered.

public ListAdapter getAdapter ()

Added in API level 1

Returns a filterable list adapter used for auto completion.

Returns
  • a data adapter used for auto completion

public CharSequence getCompletionHint ()

Added in API level 16

Gets the optional hint text displayed at the bottom of the the matching list.

Related XML Attributes
Returns
  • The hint text, if any

public int getDropDownAnchor ()

Added in API level 3

Returns the id for the view that the auto-complete drop down list is anchored to.

Related XML Attributes
Returns
  • the view's id, or NO_ID if none specified

public Drawable getDropDownBackground ()

Added in API level 5

Gets the background of the auto-complete drop-down list.

Related XML Attributes
Returns
  • the background drawable

public int getDropDownHeight ()

Added in API level 4

Returns the current height for the auto-complete drop down list. This can be a fixed height, or MATCH_PARENT to fill the screen, or WRAP_CONTENT to fit the height of the drop down's content.

Related XML Attributes
Returns
  • the height for the drop down list

public int getDropDownHorizontalOffset ()

Added in API level 5

Gets the horizontal offset used for the auto-complete drop-down list.

Returns
  • the horizontal offset

public int getDropDownVerticalOffset ()

Added in API level 5

Gets the vertical offset used for the auto-complete drop-down list.

Returns
  • the vertical offset

public int getDropDownWidth ()

Added in API level 3

Returns the current width for the auto-complete drop down list. This can be a fixed width, or MATCH_PARENT to fill the screen, or WRAP_CONTENT to fit the width of its anchor view.

Related XML Attributes
Returns
  • the width for the drop down list

public AdapterView.OnItemClickListener getItemClickListener ()

Added in API level 1

This method was deprecated in API level 3.
Use getOnItemClickListener() intead

Returns the listener that is notified whenever the user clicks an item in the drop down list.

Returns
  • the item click listener

public AdapterView.OnItemSelectedListener getItemSelectedListener ()

Added in API level 1

This method was deprecated in API level 3.
Use getOnItemSelectedListener() intead

Returns the listener that is notified whenever the user selects an item in the drop down list.

Returns
  • the item selected listener

public int getListSelection ()

Added in API level 3

Get the position of the dropdown view selection, if there is one. Returns ListView.INVALID_POSITION if there is no dropdown or if there is no selection.

Returns

public AdapterView.OnItemClickListener getOnItemClickListener ()

Added in API level 3

Returns the listener that is notified whenever the user clicks an item in the drop down list.

Returns
  • the item click listener

public AdapterView.OnItemSelectedListener getOnItemSelectedListener ()

Added in API level 3

Returns the listener that is notified whenever the user selects an item in the drop down list.

Returns
  • the item selected listener

public int getThreshold ()

Added in API level 1

Returns the number of characters the user must type before the drop down list is shown.

Related XML Attributes
Returns
  • the minimum number of characters to type to show the drop down

public boolean isPerformingCompletion ()

Added in API level 3

Identifies whether the view is currently performing a text completion, so subclasses can decide whether to respond to text changed events.

public boolean isPopupShowing ()

Added in API level 1

Indicates whether the popup menu is showing.

Returns
  • true if the popup menu is showing, false otherwise

public void onCommitCompletion (CompletionInfo completion)

Added in API level 3

Called by the framework in response to a text completion from the current input method, provided by it calling InputConnection.commitCompletion(). The default implementation does nothing; text views that are supporting auto-completion should override this to do their desired behavior.

Parameters
completion The auto complete text the user has selected.

public void onFilterComplete (int count)

Added in API level 1

Notifies the end of a filtering operation.

Parameters
count the number of values computed by the filter

public boolean onKeyDown (int keyCode, KeyEvent event)

Added in API level 1

Default implementation of KeyEvent.Callback.onKeyDown(): perform press of the view when KEYCODE_DPAD_CENTER or KEYCODE_ENTER is released, if the view is enabled and clickable.

Key presses in software keyboards will generally NOT trigger this listener, although some may elect to do so in some situations. Do not rely on this to catch software key presses.

Parameters
keyCode A key code that represents the button pressed, from KeyEvent.
event The KeyEvent object that defines the button action.
Returns
  • If you handled the event, return true. If you want to allow the event to be handled by the next receiver, return false.

public boolean onKeyPreIme (int keyCode, KeyEvent event)

Added in API level 3

Handle a key event before it is processed by any input method associated with the view hierarchy. This can be used to intercept key events in special situations before the IME consumes them; a typical example would be handling the BACK key to update the application's UI instead of allowing the IME to see it and close itself.

Parameters
keyCode The value in event.getKeyCode().
event Description of the key event.
Returns
  • If you handled the event, return true. If you want to allow the event to be handled by the next receiver, return false.

public boolean onKeyUp (int keyCode, KeyEvent event)

Added in API level 1

Default implementation of KeyEvent.Callback.onKeyUp(): perform clicking of the view when KEYCODE_DPAD_CENTER or KEYCODE_ENTER is released.

Key presses in software keyboards will generally NOT trigger this listener, although some may elect to do so in some situations. Do not rely on this to catch software key presses.

Parameters
keyCode A key code that represents the button pressed, from KeyEvent.
event The KeyEvent object that defines the button action.
Returns
  • If you handled the event, return true. If you want to allow the event to be handled by the next receiver, return false.

public void onWindowFocusChanged (boolean hasWindowFocus)

Added in API level 1

Called when the window containing this view gains or loses focus. Note that this is separate from view focus: to receive key events, both your view and its window must have focus. If a window is displayed on top of yours that takes input focus, then your own window will lose focus but the view focus will remain unchanged.

Parameters
hasWindowFocus True if the window containing this view now has focus, false otherwise.

public void performCompletion ()

Added in API level 1

Performs the text completion by converting the selected item from the drop down list into a string, replacing the text box's content with this string and finally dismissing the drop down menu.

public void performValidation ()

Added in API level 1

If a validator was set on this view and the current string is not valid, ask the validator to fix it.

public void setAdapter (T adapter)

Added in API level 1

Changes the list of data used for auto completion. The provided list must be a filterable list adapter.

The caller is still responsible for managing any resources used by the adapter. Notably, when the AutoCompleteTextView is closed or released, the adapter is not notified. A common case is the use of CursorAdapter, which contains a Cursor that must be closed. This can be done automatically (see startManagingCursor()), or by manually closing the cursor when the AutoCompleteTextView is dismissed.

Parameters
adapter the adapter holding the auto completion data

public void setCompletionHint (CharSequence hint)

Added in API level 1

Sets the optional hint text that is displayed at the bottom of the the matching list. This can be used as a cue to the user on how to best use the list, or to provide extra information.

Related XML Attributes
Parameters
hint the text to be displayed to the user

public void setDropDownAnchor (int id)

Added in API level 3

Sets the view to which the auto-complete drop down list should anchor. The view corresponding to this id will not be loaded until the next time it is needed to avoid loading a view which is not yet instantiated.

Related XML Attributes
Parameters
id the id to anchor the drop down list view to

public void setDropDownBackgroundDrawable (Drawable d)

Added in API level 5

Sets the background of the auto-complete drop-down list.

Related XML Attributes
Parameters
d the drawable to set as the background

public void setDropDownBackgroundResource (int id)

Added in API level 5

Sets the background of the auto-complete drop-down list.

Related XML Attributes
Parameters
id the id of the drawable to set as the background

public void setDropDownHeight (int height)

Added in API level 4

Sets the current height for the auto-complete drop down list. This can be a fixed height, or MATCH_PARENT to fill the screen, or WRAP_CONTENT to fit the height of the drop down's content.

Related XML Attributes
Parameters
height the height to use

public void setDropDownHorizontalOffset (int offset)

Added in API level 5

Sets the horizontal offset used for the auto-complete drop-down list.

Parameters
offset the horizontal offset

public void setDropDownVerticalOffset (int offset)

Added in API level 5

Sets the vertical offset used for the auto-complete drop-down list.

Parameters
offset the vertical offset

public void setDropDownWidth (int width)

Added in API level 3

Sets the current width for the auto-complete drop down list. This can be a fixed width, or MATCH_PARENT to fill the screen, or WRAP_CONTENT to fit the width of its anchor view.

Related XML Attributes
Parameters
width the width to use

public void setListSelection (int position)

Added in API level 3

Set the position of the dropdown view selection.

Parameters
position The position to move the selector to.

public void setOnClickListener (View.OnClickListener listener)

Added in API level 1

Register a callback to be invoked when this view is clicked. If this view is not clickable, it becomes clickable.

Parameters
listener The callback that will run

public void setOnDismissListener (AutoCompleteTextView.OnDismissListener dismissListener)

Added in API level 17

Set a listener that will be invoked whenever the AutoCompleteTextView's list of completions is dismissed.

Parameters
dismissListener Listener to invoke when completions are dismissed

public void setOnItemClickListener (AdapterView.OnItemClickListener l)

Added in API level 1

Sets the listener that will be notified when the user clicks an item in the drop down list.

Parameters
l the item click listener

public void setOnItemSelectedListener (AdapterView.OnItemSelectedListener l)

Added in API level 1

Sets the listener that will be notified when the user selects an item in the drop down list.

Parameters
l the item selected listener

public void setText (CharSequence text, boolean filter)

Added in API level 17

Like setText(CharSequence), except that it can disable filtering.

Parameters
filter If false, no filtering will be performed as a result of this call.

public void setThreshold (int threshold)

Added in API level 1

Specifies the minimum number of characters the user has to type in the edit box before the drop down list is shown.

When threshold is less than or equals 0, a threshold of 1 is applied.

Related XML Attributes
Parameters
threshold the number of characters to type before the drop down is shown
See Also

public void setValidator (AutoCompleteTextView.Validator validator)

Added in API level 1

Sets the validator used to perform text validation.

Parameters
validator The validator used to validate the text entered in this widget.

public void showDropDown ()

Added in API level 1

Displays the drop down on screen.

Protected Methods

protected CharSequence convertSelectionToString (Object selectedItem)

Added in API level 1

Converts the selected item from the drop down list into a sequence of character that can be used in the edit box.

Parameters
selectedItem the item selected by the user for completion
Returns
  • a sequence of characters representing the selected suggestion

protected Filter getFilter ()

Added in API level 1

Returns the Filter obtained from getFilter(), or null if setAdapter(T) was not called with a Filterable.

protected void onAttachedToWindow ()

Added in API level 1

This is called when the view is attached to a window. At this point it has a Surface and will start drawing. Note that this function is guaranteed to be called before onDraw(android.graphics.Canvas), however it may be called any time before the first onDraw -- including before or after onMeasure(int, int).

protected void onDetachedFromWindow ()

Added in API level 1

This is called when the view is detached from a window. At this point it no longer has a surface for drawing.

protected void onDisplayHint (int hint)

Added in API level 8

Gives this view a hint about whether is displayed or not. For instance, when a View moves out of the screen, it might receives a display hint indicating the view is not displayed. Applications should not rely on this hint as there is no guarantee that they will receive one.

Parameters
hint A hint about whether or not this view is displayed: VISIBLE or INVISIBLE.

protected void onFocusChanged (boolean focused, int direction, Rect previouslyFocusedRect)

Added in API level 1

Called by the view system when the focus state of this view changes. When the focus change event is caused by directional navigation, direction and previouslyFocusedRect provide insight into where the focus is coming from. When overriding, be sure to call up through to the super class so that the standard focus handling will occur.

Parameters
focused True if the View has focus; false otherwise.
direction The direction focus has moved when requestFocus() is called to give this view focus. Values are FOCUS_UP, FOCUS_DOWN, FOCUS_LEFT, FOCUS_RIGHT, FOCUS_FORWARD, or FOCUS_BACKWARD. It may not always apply, in which case use the default.
previouslyFocusedRect The rectangle, in this view's coordinate system, of the previously focused view. If applicable, this will be passed in as finer grained information about where the focus is coming from (in addition to direction). Will be null otherwise.

protected void performFiltering (CharSequence text, int keyCode)

Added in API level 1

Starts filtering the content of the drop down list. The filtering pattern is the content of the edit box. Subclasses should override this method to filter with a different pattern, for instance a substring of text.

Parameters
text the filtering pattern
keyCode the last character inserted in the edit box; beware that this will be null when text is being added through a soft input method.

protected void replaceText (CharSequence text)

Added in API level 1

Performs the text completion by replacing the current text by the selected item. Subclasses should override this method to avoid replacing the whole content of the edit box.

Parameters
text the selected suggestion in the drop down list

protected boolean setFrame (int l, int t, int r, int b)

Added in API level 1

Assign a size and position to this view. This is called from layout.

Parameters
l Left position, relative to parent
t Top position, relative to parent
r Right position, relative to parent
b Bottom position, relative to parent
Returns
  • true if the new size and position are different than the previous ones