Added in API level 5

Summary: Nested Classes | Methods | Inherited Methods

WebStorage

Kotlin |Java

public class WebStorage
extends Object

java.lang.Object
↳	android.webkit.WebStorage

This class is used to manage the JavaScript storage APIs provided by the WebView. It manages the Application Cache API, the Web SQL Database API and the HTML5 Web Storage API. The Application Cache API provides a mechanism to create and maintain an application cache to power offline Web applications. Use of the Application Cache API can be attributed to an origin WebStorage.Origin, however it is not possible to set per-origin quotas. Note that there can be only one application cache per application. The Web SQL Database API provides storage which is private to a given origin. Similar to the Application Cache, 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 This class is obsolete and no longer used.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 both the Application Cache and Web SQL Database APIs by the given origin.
`static WebStorage`	`getInstance()` Gets the singleton instance of this class.
`void`	`getOrigins(ValueCallback<Map> callback)` Gets the origins currently using either the Application Cache or 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 both the Application Cache and 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 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.

Public methods

deleteAllData

Added in API level 7

public void deleteAllData ()

Clears all storage currently being used by the JavaScript storage APIs. This includes the Application Cache, 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 both the Application Cache and 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> callback)

Gets the origins currently using either the Application Cache or 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. Note that a quota is not enforced on a per-origin basis for the Application Cache API.

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 both the Application Cache and 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. Note that a quota is not enforced on a per-origin basis for the Application Cache API.

Parameters
`origin`	`String`
`quota`	`long`

WebStorage

Summary

Nested classes

Public methods

Inherited methods

Public methods

deleteAllData

deleteOrigin

getInstance

getOrigins

getQuotaForOrigin

getUsageForOrigin

setQuotaForOrigin