Added in API level 5

Summary: Nested Classes | Methods | Inherited Methods

WebStorage

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Kotlin |Java

public class WebStorage
extends Object

java.lang.Object
↳	android.webkit.WebStorage

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This class is used to manage the JavaScript storage APIs provided by the WebView. It manages the Web SQL Database API and the HTML5 Web Storage API. The Web SQL Database API provides storage which is private to a given origin. Use of the Web SQL Database can be attributed to an origin. It is also possible to set per-origin quotas.

Summary

Nested classes
class	WebStorage.Origin This class encapsulates information about the amount of storage currently used by an origin for the JavaScript storage APIs.
interface	WebStorage.QuotaUpdater This interface was deprecated in API level 19. This class is obsolete and no longer used.

Public methods
void	deleteAllData() Clears all storage currently being used by the JavaScript storage APIs.
void	deleteOrigin(String origin) Clears the storage currently being used by the Web SQL Database APIs by the given origin.
static WebStorage	getInstance() Gets the singleton instance of this class.
void	getOrigins(ValueCallback<Map<K, V>> callback) Gets the origins currently using the Web SQL Database APIs.
void	getQuotaForOrigin(String origin, ValueCallback<Long> callback) Gets the storage quota for the Web SQL Database API for the given origin.
void	getUsageForOrigin(String origin, ValueCallback<Long> callback) Gets the amount of storage currently being used by the Web SQL Database APIs by the given origin.
void	setQuotaForOrigin(String origin, long quota) This method was deprecated in API level 18. Controlling quota per-origin will not be supported in future.

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 timeoutMillis, int nanos) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait(long timeoutMillis) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait() Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public methods

deleteAllData

Added in API level 7

public void deleteAllData ()

Clears all storage currently being used by the JavaScript storage APIs. This includes Web SQL Database and the HTML5 Web Storage APIs.

deleteOrigin

Added in API level 7

public void deleteOrigin (String origin)

Clears the storage currently being used by the Web SQL Database APIs by the given origin. The origin is specified using its string representation.

Parameters
origin	String

getInstance

Added in API level 7

public static WebStorage getInstance ()

Gets the singleton instance of this class.

Returns
WebStorage	the singleton WebStorage instance

getOrigins

Added in API level 7

public void getOrigins (ValueCallback<Map<K, V>> callback)

Gets the origins currently using the Web SQL Database APIs. This method operates asynchronously, with the result being provided via a ValueCallback. The origins are provided as a map, of type Map<String, WebStorage.Origin>, from the string representation of the origin to a WebStorage.Origin object.

Parameters
callback	ValueCallback

getQuotaForOrigin

Added in API level 7

public void getQuotaForOrigin (String origin, 
                ValueCallback<Long> callback)

Gets the storage quota for the Web SQL Database API for the given origin. The quota is given in bytes and the origin is specified using its string representation. This method operates asynchronously, with the result being provided via a ValueCallback.

Parameters
origin	String
callback	ValueCallback

getUsageForOrigin

Added in API level 7

public void getUsageForOrigin (String origin, 
                ValueCallback<Long> callback)

Gets the amount of storage currently being used by the Web SQL Database APIs by the given origin. The amount is given in bytes and the origin is specified using its string representation. This method operates asynchronously, with the result being provided via a ValueCallback.

Parameters
origin	String
callback	ValueCallback

setQuotaForOrigin

Added in API level 7
Deprecated in API level 18

public void setQuotaForOrigin (String origin, 
                long quota)

This method was deprecated in API level 18.
Controlling quota per-origin will not be supported in future.

Sets the storage quota for the Web SQL Database API for the given origin. The quota is specified in bytes and the origin is specified using its string representation.

Parameters
origin	String
quota	long