VerifiedKeyEvent
public
final
class
VerifiedKeyEvent
extends VerifiedInputEvent
implements
Parcelable
java.lang.Object | ||
↳ | android.view.VerifiedInputEvent | |
↳ | android.view.VerifiedKeyEvent |
KeyEvent that has been verified by the system.
The data contained in this class is always a subset of a KeyEvent
. Use this class to
check which data has been confirmed by the system to be authentic.
Most applications do not need to use this class.
Summary
Inherited constants |
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Fields | |
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public
static
final
Creator<VerifiedKeyEvent> |
CREATOR
|
Inherited fields |
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Public methods | |
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int
|
describeContents()
Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
boolean
|
equals(Object o)
Indicates whether some other object is "equal to" this one. |
int
|
getAction()
The action of this key event. |
long
|
getDownTimeNanos()
Retrieve the time of the most recent key down event, in the
|
Boolean
|
getFlag(int flag)
Get a specific flag of this key event, if possible. |
int
|
getKeyCode()
Retrieve the key code of the key event. |
int
|
getMetaState()
Returns the state of the meta keys. |
int
|
getRepeatCount()
Retrieve the repeat count of the event. |
int
|
getScanCode()
Retrieve the hardware key id of this key event. |
int
|
hashCode()
Returns a hash code value for the object. |
void
|
writeToParcel(Parcel dest, int flags)
Flatten this object in to a Parcel. |
Inherited methods | |
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Fields
Public methods
describeContents
public int describeContents ()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation. For example, if the object will
include a file descriptor in the output of writeToParcel(android.os.Parcel, int)
,
the return value of this method must include the
CONTENTS_FILE_DESCRIPTOR
bit.
Returns | |
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int |
a bitmask indicating the set of special object types marshaled
by this Parcelable object instance.
Value is either 0 or CONTENTS_FILE_DESCRIPTOR |
equals
public boolean equals (Object o)
Indicates whether some other object is "equal to" this one.
The equals
method implements an equivalence relation
on non-null object references:
- It is reflexive: for any non-null reference value
x
,x.equals(x)
should returntrue
. - It is symmetric: for any non-null reference values
x
andy
,x.equals(y)
should returntrue
if and only ify.equals(x)
returnstrue
. - It is transitive: for any non-null reference values
x
,y
, andz
, ifx.equals(y)
returnstrue
andy.equals(z)
returnstrue
, thenx.equals(z)
should returntrue
. - It is consistent: for any non-null reference values
x
andy
, multiple invocations ofx.equals(y)
consistently returntrue
or consistently returnfalse
, provided no information used inequals
comparisons on the objects is modified. - For any non-null reference value
x
,x.equals(null)
should returnfalse
.
An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.
Parameters | |
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o |
Object : This value may be null . |
Returns | |
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boolean |
true if this object is the same as the obj
argument; false otherwise. |
getAction
public int getAction ()
The action of this key event. May be either KeyEvent#ACTION_DOWN
or
KeyEvent#ACTION_UP
.
Returns | |
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int |
Value is KeyEvent.ACTION_DOWN , or KeyEvent.ACTION_UP |
See also:
getDownTimeNanos
public long getDownTimeNanos ()
Retrieve the time of the most recent key down event, in the
SystemClock.uptimeMillis()
time base, but in nanoseconds. If this
is a down event, this will be the same as VerifiedInputEvent#getEventTimeNanos()
.
Returns | |
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long |
See also:
getFlag
public Boolean getFlag (int flag)
Get a specific flag of this key event, if possible. Return null if the flag value could not be checked.
Parameters | |
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flag |
int : the flag of interest |
Returns | |
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Boolean |
Boolean(true) if the key event has the requested flag Boolean(false) if the key event does not have the requested flag null if the flag value could not be checked |
getKeyCode
public int getKeyCode ()
Retrieve the key code of the key event.
Returns | |
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int |
See also:
getMetaState
public int getMetaState ()
Returns the state of the meta keys.
Returns | |
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int |
an integer in which each bit set to 1 represents a pressed meta key |
See also:
getRepeatCount
public int getRepeatCount ()
Retrieve the repeat count of the event. For key down events, this is the number of times the key has repeated with the first down starting at 0 and counting up from there. For key up events, this is always equal to zero. For multiple key events, this is the number of down/up pairs that have occurred.
Returns | |
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int |
getScanCode
public int getScanCode ()
Retrieve the hardware key id of this key event. These values are not reliable and vary from device to device.
Returns | |
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int |
See also:
hashCode
public int hashCode ()
Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
HashMap
.
The general contract of hashCode
is:
- Whenever it is invoked on the same object more than once during
an execution of a Java application, the
hashCode
method must consistently return the same integer, provided no information used inequals
comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. - If two objects are equal according to the
equals
method, then calling thehashCode
method on each of the two objects must produce the same integer result. - It is not required that if two objects are unequal
according to the
equals
method, then calling thehashCode
method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns | |
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int |
a hash code value for this object. |
writeToParcel
public void writeToParcel (Parcel dest, int flags)
Flatten this object in to a Parcel.
Parameters | |
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dest |
Parcel : This value cannot be null . |
flags |
int : Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE .
Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE , and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |