public class WindowId extends Object implements Parcelable
View
. This classes is useful when window input interactions need to be
done across processes: the class itself is a Parcelable that can be passed to other
processes for them to interact with your window, and it provides a limited safe API
that doesn't allow the other process to negatively harm your window.Modifier and Type | Class and Description |
---|---|
static class |
WindowId.FocusObserver
Subclass for observing changes to the focus state of an
WindowId . |
Parcelable.ClassLoaderCreator<T>, Parcelable.Creator<T>
Modifier and Type | Field and Description |
---|---|
static Parcelable.Creator<WindowId> |
CREATOR |
CONTENTS_FILE_DESCRIPTOR, PARCELABLE_ELIDE_DUPLICATES, PARCELABLE_WRITE_RETURN_VALUE
Constructor and Description |
---|
WindowId(IWindowId target) |
Modifier and Type | Method and Description |
---|---|
int |
describeContents()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation.
|
boolean |
equals(Object otherObj)
Comparison operator on two IntentSender objects, such that true
is returned then they both represent the same operation from the
same package.
|
IWindowId |
getTarget() |
int |
hashCode()
Returns a hash code value for the object.
|
boolean |
isFocused()
Retrieve the current focus state of the associated window.
|
void |
registerFocusObserver(WindowId.FocusObserver observer)
Start monitoring for changes in the focus state of the window.
|
String |
toString()
Returns a string representation of the object.
|
void |
unregisterFocusObserver(WindowId.FocusObserver observer)
Stop monitoring changes in the focus state of the window.
|
void |
writeToParcel(Parcel out,
int flags)
Flatten this object in to a Parcel.
|
public static final Parcelable.Creator<WindowId> CREATOR
public boolean isFocused()
public void registerFocusObserver(WindowId.FocusObserver observer)
public void unregisterFocusObserver(WindowId.FocusObserver observer)
public boolean equals(Object otherObj)
equals
in class Object
otherObj
- the reference object with which to compare.true
if this object is the same as the obj
argument; false
otherwise.Object.hashCode()
,
HashMap
public int hashCode()
Object
HashMap
.
The general contract of hashCode
is:
hashCode
method
must consistently return the same integer, provided no information
used in equals
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.
equals(Object)
method, then calling the hashCode
method on each of
the two objects must produce the same integer result.
Object.equals(java.lang.Object)
method, then calling the hashCode
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.
As much as is reasonably practical, the hashCode method defined by
class Object
does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
JavaTM programming language.)
hashCode
in class Object
Object.equals(java.lang.Object)
,
System.identityHashCode(java.lang.Object)
public String toString()
Object
toString
method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
It is recommended that all subclasses override this method.
The toString
method for class Object
returns a string consisting of the name of the class of which the
object is an instance, the at-sign character `@
', and
the unsigned hexadecimal representation of the hash code of the
object. In other words, this method returns a string equal to the
value of:
getClass().getName() + '@' + Integer.toHexString(hashCode())
public int describeContents()
Parcelable
Parcelable.writeToParcel(Parcel, int)
,
the return value of this method must include the
Parcelable.CONTENTS_FILE_DESCRIPTOR
bit.describeContents
in interface Parcelable
Parcelable.CONTENTS_FILE_DESCRIPTOR
public void writeToParcel(Parcel out, int flags)
Parcelable
writeToParcel
in interface Parcelable
out
- The Parcel in which the object should be written.flags
- Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE
.public IWindowId getTarget()