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AccessibilityNodeProviderCompat

public class AccessibilityNodeProviderCompat
extends Object

java.lang.Object
↳	android.support.v4.view.accessibility.AccessibilityNodeProviderCompat

Helper for accessing AccessibilityNodeProvider introduced after API level 4 in a backwards compatible fashion.

Summary

Public constructors
`AccessibilityNodeProviderCompat()` Creates a new instance.
`AccessibilityNodeProviderCompat(Object provider)` Creates a new instance wrapping an `AccessibilityNodeProvider`.

Public methods
`AccessibilityNodeInfoCompat`	`createAccessibilityNodeInfo(int virtualViewId)` Returns an `AccessibilityNodeInfoCompat` representing a virtual view, i.e.
`List<AccessibilityNodeInfoCompat>`	`findAccessibilityNodeInfosByText(String text, int virtualViewId)` Finds `AccessibilityNodeInfoCompat`s by text.
`AccessibilityNodeInfoCompat`	`findFocus(int focus)` Find the virtual view, i.e.
`Object`	`getProvider()`
`boolean`	`performAction(int virtualViewId, int action, Bundle arguments)` Performs an accessibility action on a virtual view, i.e.

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 millis, 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 millis)` 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 constructors

AccessibilityNodeProviderCompat

AccessibilityNodeProviderCompat ()

Creates a new instance.

AccessibilityNodeProviderCompat

AccessibilityNodeProviderCompat (Object provider)

Creates a new instance wrapping an AccessibilityNodeProvider.

Parameters
`provider`	`Object`: The provider.

Public methods

createAccessibilityNodeInfo

AccessibilityNodeInfoCompat createAccessibilityNodeInfo (int virtualViewId)

Returns an AccessibilityNodeInfoCompat representing a virtual view, i.e. a descendant of the host View, with the given virtualViewId or the host View itself if virtualViewId equals to NO_ID.

A virtual descendant is an imaginary View that is reported as a part of the view hierarchy for accessibility purposes. This enables custom views that draw complex content to report them selves as a tree of virtual views, thus conveying their logical structure.

The implementer is responsible for obtaining an accessibility node info from the pool of reusable instances and setting the desired properties of the node info before returning it.

Parameters
`virtualViewId`	`int`: A client defined virtual view id.

Returns
`AccessibilityNodeInfoCompat`	A populated `AccessibilityNodeInfoCompat` for a virtual descendant or the host View.

See also:

AccessibilityNodeInfoCompat

findAccessibilityNodeInfosByText

List<AccessibilityNodeInfoCompat> findAccessibilityNodeInfosByText (String text, 
                int virtualViewId)

Finds AccessibilityNodeInfoCompats by text. The match is case insensitive containment. The search is relative to the virtual view, i.e. a descendant of the host View, with the given virtualViewId or the host View itself virtualViewId equals to NO_ID.

Parameters
`text`	`String`: The searched text.
`virtualViewId`	`int`: A client defined virtual view id which defined the root of the tree in which to perform the search.

Returns
`List<AccessibilityNodeInfoCompat>`	A list of node info.

See also:

findFocus

AccessibilityNodeInfoCompat findFocus (int focus)

Find the virtual view, i.e. a descendant of the host View, that has the specified focus type.

Parameters
`focus`	`int`: The focus to find. One of `FOCUS_INPUT` or `FOCUS_ACCESSIBILITY`.

Returns
`AccessibilityNodeInfoCompat`	The node info of the focused view or null.

See also:

getProvider

Object getProvider ()

Returns
`Object`	The wrapped `AccessibilityNodeProvider`.

performAction

boolean performAction (int virtualViewId, 
                int action, 
                Bundle arguments)

Performs an accessibility action on a virtual view, i.e. a descendant of the host View, with the given virtualViewId or the host View itself if virtualViewId equals to NO_ID.

Parameters
`virtualViewId`	`int`: A client defined virtual view id.
`action`	`int`: The action to perform.
`arguments`	`Bundle`: Optional arguments.

Returns
`boolean`	True if the action was performed.

See also: