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BlobHandle

public final class BlobHandle
extends Object implements Parcelable

java.lang.Object
↳	android.app.blob.BlobHandle

An identifier to represent a blob.

Summary

Inherited constants

From interface android.os.Parcelable

`int`	`CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int`	`PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `writeToParcel(Parcel, int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`".

Fields
`public static final Creator<BlobHandle>`	`CREATOR`

Public methods
`static BlobHandle`	`createWithSha256(byte[] digest, CharSequence label, long expiryTimeMillis, String tag)` Create a new blob identifier.
`int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`long`	`getExpiryTimeMillis()` Returns the expiry time in milliseconds of the blob that this object is representing, in `System#currentTimeMillis()` timebase.
`CharSequence`	`getLabel()` Returns the label associated with the blob that this object is representing.
`byte[]`	`getSha256Digest()` Returns the SHA-256 hash of the blob that this object is representing.
`String`	`getTag()` Returns the opaque `String` associated with the blob this object is representing.
`int`	`hashCode()` Returns a hash code value for the object.
`String`	`toString()` Returns a string representation of the object.
`void`	`writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


        
          android.os.Parcelable

`abstract int`	`describeContents()` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
`abstract void`	`writeToParcel(Parcel dest, int flags)` Flatten this object in to a Parcel.

Fields

CREATOR

public static final Creator<BlobHandle> CREATOR

Public methods

createWithSha256

public static BlobHandle createWithSha256 (byte[] digest, 
                CharSequence label, 
                long expiryTimeMillis, 
                String tag)

Create a new blob identifier.

For two objects of BlobHandle to be considered equal, the following arguments must be equal:

digest
label
expiryTimeMillis
tag

Parameters
`digest`	`byte`: the SHA-256 hash of the blob this is representing. This value cannot be `null`.
`label`	`CharSequence`: a label indicating what the blob is, that can be surfaced to the user. The length of the label cannot be more than 100 characters. It is recommended to keep this brief. This may be truncated and ellipsized if it is too long to be displayed to the user. This value cannot be `null`.
`expiryTimeMillis`	`long`: the time in secs after which the blob should be invalidated and not allowed to be accessed by any other app, in `System#currentTimeMillis()` timebase or `0` to indicate that there is no expiry time associated with this blob. Value is a non-negative timestamp measured as the number of milliseconds since 1970-01-01T00:00:00Z.
`tag`	`String`: an opaque `String` associated with the blob. The length of the tag cannot be more than 128 characters. This value cannot be `null`.

Returns
`BlobHandle`	a new instance of `BlobHandle` object. This value cannot be `null`.

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
`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 obj)

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 return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values 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.
For any non-null reference value 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.

Parameters
`obj`	`Object`: the reference object with which to compare.

Returns
`boolean`	`true` if this object is the same as the obj argument; `false` otherwise.

getExpiryTimeMillis

public long getExpiryTimeMillis ()

Returns the expiry time in milliseconds of the blob that this object is representing, in System#currentTimeMillis() timebase.
Value is a non-negative timestamp measured as the number of milliseconds since 1970-01-01T00:00:00Z.

Returns
`long`	Value is a non-negative timestamp measured as the number of milliseconds since 1970-01-01T00:00:00Z.

See also:

createWithSha256(byte[], CharSequence, long, String)

getLabel

public CharSequence getLabel ()

Returns the label associated with the blob that this object is representing.

Returns
`CharSequence`	This value cannot be `null`.

See also:

createWithSha256(byte[], CharSequence, long, String)

getSha256Digest

public byte[] getSha256Digest ()

Returns the SHA-256 hash of the blob that this object is representing.

Returns
`byte[]`	This value cannot be `null`.

See also:

createWithSha256(byte[], CharSequence, long, String)

getTag

public String getTag ()

Returns the opaque String associated with the blob this object is representing.

Returns
`String`	This value cannot be `null`.

See also:

createWithSha256(byte[], CharSequence, long, String)

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 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.
If two objects are equal according to the equals(Object) method, then calling the hashCode 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(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 Java™ programming language.)

Returns
`int`	a hash code value for this object.

toString

public String toString ()

Returns a string representation of the object. In general, the 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())

Returns
`String`	a string representation of the object.

writeToParcel

public void writeToParcel (Parcel dest, 
                int flags)

Flatten this object in to a Parcel.

Parameters
`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