Keyboard
public
class
Keyboard
extends Object
| java.lang.Object | |
| ↳ | android.inputmethodservice.Keyboard |
This class was deprecated
in API level 29.
This class is deprecated because this is just a convenient UI widget class that
application developers can re-implement on top of existing public APIs. If you have
already depended on this class, consider copying the implementation from AOSP into
your project or re-implementing a similar widget by yourselves
Loads an XML description of a keyboard and stores the attributes of the keys. A keyboard consists of rows of keys.
The layout file for a keyboard contains XML that looks like the following snippet:
<Keyboard
android:keyWidth="%10p"
android:keyHeight="50px"
android:horizontalGap="2px"
android:verticalGap="2px" >
<Row android:keyWidth="32px" >
<Key android:keyLabel="A" />
...
</Row>
...
</Keyboard>
Summary
Nested classes | |
|---|---|
class |
Keyboard.Key
Class for describing the position and characteristics of a single key in the keyboard. |
class |
Keyboard.Row
Container for keys in the keyboard. |
XML attributes | |
|---|---|
android:horizontalGap |
Default horizontal gap between keys. |
android:keyHeight |
Default height of a key, in pixels or percentage of display width. |
android:keyWidth |
Default width of a key, in pixels or percentage of display width. |
android:verticalGap |
Default vertical gap between rows of keys. |
Constants | |
|---|---|
int |
EDGE_BOTTOM
|
int |
EDGE_LEFT
|
int |
EDGE_RIGHT
|
int |
EDGE_TOP
|
int |
KEYCODE_ALT
|
int |
KEYCODE_CANCEL
|
int |
KEYCODE_DELETE
|
int |
KEYCODE_DONE
|
int |
KEYCODE_MODE_CHANGE
|
int |
KEYCODE_SHIFT
|
Public constructors | |
|---|---|
Keyboard(Context context, int xmlLayoutResId)
Creates a keyboard from the given xml key layout file. |
|
Keyboard(Context context, int xmlLayoutResId, int modeId, int width, int height)
Creates a keyboard from the given xml key layout file. |
|
Keyboard(Context context, int xmlLayoutResId, int modeId)
Creates a keyboard from the given xml key layout file. |
|
Keyboard(Context context, int layoutTemplateResId, CharSequence characters, int columns, int horizontalPadding)
Creates a blank keyboard from the given resource file and populates it with the specified characters in left-to-right, top-to-bottom fashion, using the specified number of columns. |
|
Public methods | |
|---|---|
int
|
getHeight()
Returns the total height of the keyboard |
List<Keyboard.Key>
|
getKeys()
|
int
|
getMinWidth()
|
List<Keyboard.Key>
|
getModifierKeys()
|
int[]
|
getNearestKeys(int x, int y)
Returns the indices of the keys that are closest to the given point. |
int
|
getShiftKeyIndex()
|
boolean
|
isShifted()
|
boolean
|
setShifted(boolean shiftState)
|
Protected methods | |
|---|---|
Keyboard.Key
|
createKeyFromXml(Resources res, Keyboard.Row parent, int x, int y, XmlResourceParser parser)
|
Keyboard.Row
|
createRowFromXml(Resources res, XmlResourceParser parser)
|
int
|
getHorizontalGap()
|
int
|
getKeyHeight()
|
int
|
getKeyWidth()
|
int
|
getVerticalGap()
|
void
|
setHorizontalGap(int gap)
|
void
|
setKeyHeight(int height)
|
void
|
setKeyWidth(int width)
|
void
|
setVerticalGap(int gap)
|
Inherited methods | |
|---|---|
XML attributes
android:horizontalGap
Default horizontal gap between keys.
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), and
mm (millimeters).
May be a fractional value, which is a floating point number appended with
either % or %p, such as "14.5%".
The % suffix always means a percentage of the base size;
the optional %p suffix provides a size relative to some parent container.
android:keyHeight
Default height of a key, in pixels or percentage of display width.
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), and
mm (millimeters).
May be a fractional value, which is a floating point number appended with
either % or %p, such as "14.5%".
The % suffix always means a percentage of the base size;
the optional %p suffix provides a size relative to some parent container.
android:keyWidth
Default width of a key, in pixels or percentage of display width.
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), and
mm (millimeters).
May be a fractional value, which is a floating point number appended with
either % or %p, such as "14.5%".
The % suffix always means a percentage of the base size;
the optional %p suffix provides a size relative to some parent container.
android:verticalGap
Default vertical gap between rows of keys.
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), and
mm (millimeters).
May be a fractional value, which is a floating point number appended with
either % or %p, such as "14.5%".
The % suffix always means a percentage of the base size;
the optional %p suffix provides a size relative to some parent container.
Constants
KEYCODE_ALT
public static final int KEYCODE_ALT
Constant Value: -6 (0xfffffffa)
KEYCODE_CANCEL
public static final int KEYCODE_CANCEL
Constant Value: -3 (0xfffffffd)
KEYCODE_DELETE
public static final int KEYCODE_DELETE
Constant Value: -5 (0xfffffffb)
KEYCODE_DONE
public static final int KEYCODE_DONE
Constant Value: -4 (0xfffffffc)
KEYCODE_MODE_CHANGE
public static final int KEYCODE_MODE_CHANGE
Constant Value: -2 (0xfffffffe)
KEYCODE_SHIFT
public static final int KEYCODE_SHIFT
Constant Value: -1 (0xffffffff)
Public constructors
Keyboard
public Keyboard (Context context, int xmlLayoutResId)
Creates a keyboard from the given xml key layout file.
| Parameters | |
|---|---|
context |
Context: the application or service context |
xmlLayoutResId |
int: the resource file that contains the keyboard layout and keys. |
Keyboard
public Keyboard (Context context, int xmlLayoutResId, int modeId, int width, int height)
Creates a keyboard from the given xml key layout file. Weeds out rows that have a keyboard mode defined but don't match the specified mode.
| Parameters | |
|---|---|
context |
Context: the application or service context |
xmlLayoutResId |
int: the resource file that contains the keyboard layout and keys. |
modeId |
int: keyboard mode identifier |
width |
int: sets width of keyboard |
height |
int: sets height of keyboard |
Keyboard
public Keyboard (Context context, int xmlLayoutResId, int modeId)
Creates a keyboard from the given xml key layout file. Weeds out rows that have a keyboard mode defined but don't match the specified mode.
| Parameters | |
|---|---|
context |
Context: the application or service context |
xmlLayoutResId |
int: the resource file that contains the keyboard layout and keys. |
modeId |
int: keyboard mode identifier |
Keyboard
public Keyboard (Context context, int layoutTemplateResId, CharSequence characters, int columns, int horizontalPadding)
Creates a blank keyboard from the given resource file and populates it with the specified characters in left-to-right, top-to-bottom fashion, using the specified number of columns.
If the specified number of columns is -1, then the keyboard will fit as many keys as possible in each row.
| Parameters | |
|---|---|
context |
Context: the application or service context |
layoutTemplateResId |
int: the layout template file, containing no keys. |
characters |
CharSequence: the list of characters to display on the keyboard. One key will be created
for each character. |
columns |
int: the number of columns of keys to display. If this number is greater than the
number of keys that can fit in a row, it will be ignored. If this number is -1, the
keyboard will fit as many keys as possible in each row. |
horizontalPadding |
int |
Public methods
getHeight
public int getHeight ()
Returns the total height of the keyboard
| Returns | |
|---|---|
int |
the total height of the keyboard |
getModifierKeys
public List<Keyboard.Key> getModifierKeys ()
| Returns | |
|---|---|
List<Keyboard.Key> |
|
getNearestKeys
public int[] getNearestKeys (int x,
int y)
Returns the indices of the keys that are closest to the given point.
| Parameters | |
|---|---|
x |
int: the x-coordinate of the point |
y |
int: the y-coordinate of the point |
| Returns | |
|---|---|
int[] |
the array of integer indices for the nearest keys to the given point. If the given point is out of range, then an array of size zero is returned. |
setShifted
public boolean setShifted (boolean shiftState)
| Parameters | |
|---|---|
shiftState |
boolean |
| Returns | |
|---|---|
boolean |
|
Protected methods
createKeyFromXml
protected Keyboard.Key createKeyFromXml (Resources res, Keyboard.Row parent, int x, int y, XmlResourceParser parser)
| Parameters | |
|---|---|
res |
Resources |
parent |
Keyboard.Row |
x |
int |
y |
int |
parser |
XmlResourceParser |
| Returns | |
|---|---|
Keyboard.Key |
|
createRowFromXml
protected Keyboard.Row createRowFromXml (Resources res, XmlResourceParser parser)
| Parameters | |
|---|---|
res |
Resources |
parser |
XmlResourceParser |
| Returns | |
|---|---|
Keyboard.Row |
|
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Last updated 2024-04-11 UTC.