public class RootInfo extends Object implements Durable, Parcelable, Comparable<RootInfo>
DocumentsContract.Root
.Modifier and Type | Class and Description |
---|---|
static interface |
RootInfo.RootType |
Parcelable.ClassLoaderCreator<T>, Parcelable.Creator<T>
Modifier and Type | Field and Description |
---|---|
String |
authority |
long |
availableBytes |
static Parcelable.Creator<RootInfo> |
CREATOR |
int |
derivedIcon |
String[] |
derivedMimeTypes
Derived fields that aren't persisted
|
int |
derivedType |
String |
documentId |
int |
flags |
int |
icon |
String |
mimeTypes |
String |
rootId |
String |
summary |
String |
title |
static int |
TYPE_AUDIO |
static int |
TYPE_DOWNLOADS |
static int |
TYPE_IMAGES |
static int |
TYPE_LOCAL |
static int |
TYPE_MTP |
static int |
TYPE_OTHER |
static int |
TYPE_RECENTS |
static int |
TYPE_SD |
static int |
TYPE_USB |
static int |
TYPE_VIDEO |
CONTENTS_FILE_DESCRIPTOR, PARCELABLE_ELIDE_DUPLICATES, PARCELABLE_WRITE_RETURN_VALUE
Constructor and Description |
---|
RootInfo() |
Modifier and Type | Method and Description |
---|---|
int |
compareTo(RootInfo other)
Compares this object with the specified object for order.
|
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.
|
static RootInfo |
fromRootsCursor(String authority,
Cursor cursor) |
String |
getDirectoryString() |
Uri |
getUri() |
int |
hashCode()
Returns a hash code value for the object.
|
boolean |
hasSettings() |
boolean |
isAdvanced() |
boolean |
isAudio() |
boolean |
isDownloads() |
boolean |
isEmpty() |
boolean |
isExternalStorage() |
boolean |
isHome() |
boolean |
isImages() |
boolean |
isLibrary() |
boolean |
isLocalOnly() |
boolean |
isMtp() |
boolean |
isRecents() |
boolean |
isSd() |
boolean |
isUsb() |
boolean |
isVideos() |
Drawable |
loadDrawerIcon(Context context) |
Drawable |
loadIcon(Context context) |
void |
read(DataInputStream in) |
void |
reset() |
boolean |
supportsChildren() |
boolean |
supportsCreate() |
boolean |
supportsRecents() |
boolean |
supportsSearch() |
String |
toString()
Returns a string representation of the object.
|
void |
write(DataOutputStream out) |
void |
writeToParcel(Parcel dest,
int flags)
Flatten this object in to a Parcel.
|
public static final int TYPE_IMAGES
public static final int TYPE_VIDEO
public static final int TYPE_AUDIO
public static final int TYPE_RECENTS
public static final int TYPE_DOWNLOADS
public static final int TYPE_LOCAL
public static final int TYPE_MTP
public static final int TYPE_SD
public static final int TYPE_USB
public static final int TYPE_OTHER
public String authority
public String rootId
public int flags
public int icon
public String title
public String summary
public String documentId
public long availableBytes
public String mimeTypes
public String[] derivedMimeTypes
public int derivedIcon
public int derivedType
public static final Parcelable.Creator<RootInfo> CREATOR
public void read(DataInputStream in) throws IOException
read
in interface Durable
IOException
public void write(DataOutputStream out) throws IOException
write
in interface Durable
IOException
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 dest, int flags)
Parcelable
writeToParcel
in interface Parcelable
dest
- 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 Uri getUri()
public boolean isRecents()
public boolean isHome()
public boolean isExternalStorage()
public boolean isDownloads()
public boolean isImages()
public boolean isVideos()
public boolean isAudio()
public boolean isMtp()
public boolean isLibrary()
public boolean hasSettings()
public boolean supportsChildren()
public boolean supportsCreate()
public boolean supportsRecents()
public boolean supportsSearch()
public boolean isAdvanced()
public boolean isLocalOnly()
public boolean isEmpty()
public boolean isSd()
public boolean isUsb()
public boolean equals(Object o)
Object
The equals
method implements an equivalence relation
on non-null object references:
x
, x.equals(x)
should return
true
.
x
and y
, x.equals(y)
should return true
if and only if
y.equals(x)
returns true
.
x
, y
, and z
, if
x.equals(y)
returns true
and
y.equals(z)
returns true
, then
x.equals(z)
should return true
.
x
and y
, multiple invocations of
x.equals(y)
consistently return true
or consistently return false
, provided no
information used in equals
comparisons on the
objects is modified.
x
,
x.equals(null)
should return false
.
The equals
method for class Object
implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x
and
y
, this method returns true
if and only
if x
and y
refer to the same object
(x == y
has the value true
).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode
method, which states
that equal objects must have equal hash codes.
equals
in class Object
o
- 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 int compareTo(RootInfo other)
Comparable
The implementor must ensure sgn(x.compareTo(y)) == -sgn(y.compareTo(x)) for all x and y. (This implies that x.compareTo(y) must throw an exception iff y.compareTo(x) throws an exception.)
The implementor must also ensure that the relation is transitive: (x.compareTo(y)>0 && y.compareTo(z)>0) implies x.compareTo(z)>0.
Finally, the implementor must ensure that x.compareTo(y)==0 implies that sgn(x.compareTo(z)) == sgn(y.compareTo(z)), for all z.
It is strongly recommended, but not strictly required that (x.compareTo(y)==0) == (x.equals(y)). Generally speaking, any class that implements the Comparable interface and violates this condition should clearly indicate this fact. The recommended language is "Note: this class has a natural ordering that is inconsistent with equals."
In the foregoing description, the notation sgn(expression) designates the mathematical signum function, which is defined to return one of -1, 0, or 1 according to whether the value of expression is negative, zero or positive.
compareTo
in interface Comparable<RootInfo>
other
- the object to be compared.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 String getDirectoryString()