OnVisibilityChangedListenerManager

All Implemented Interfaces:

com.pspdfkit.listeners.OnVisibilityChangedListener
```
public class OnVisibilityChangedListenerManager
 implements OnVisibilityChangedListener
                    
```
Collection of multiple OnVisibilityChangedListener objects. Calling onShow and onHide will dispatch on all previously added listeners.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description
`OnVisibilityChangedListenerManager()`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`void`	`addOnVisibilityChangedListener(@NonNull() OnVisibilityChangedListener listener)`	Adds a listener to the collection.
`void`	`removeOnVisibilityChangedListener(@NonNull() OnVisibilityChangedListener listener)`	Removes a previously added listener from the collection.
`void`	`clear()`	Removes all previously added OnVisibilityChangedListener instances.
`void`	`onShow(@NonNull() View view)`	Called whenever a PSPDFKit view has become visible.
`void`	`onHide(@NonNull() View view)`	Called whenever a PSPDFKit view has been hidden.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - OnVisibilityChangedListenerManager
```
OnVisibilityChangedListenerManager()
```
- Method Detail
  - addOnVisibilityChangedListener
```
 void addOnVisibilityChangedListener(@NonNull() OnVisibilityChangedListener listener)
```
    Adds a listener to the collection.
    
    Parameters:
    
    listener - On visibility changed listener to be added.
  - removeOnVisibilityChangedListener
```
 void removeOnVisibilityChangedListener(@NonNull() OnVisibilityChangedListener listener)
```
    Removes a previously added listener from the collection. Once removed the listener will no longer receive visibility change events.
    
    Parameters:
    
    listener - On visibility changed listener to be added.
  - clear
```
 void clear()
```
    Removes all previously added OnVisibilityChangedListener instances.
  - onShow
```
 void onShow(@NonNull() View view)
```
    Called whenever a PSPDFKit view has become visible.
    
    Parameters:
    
    view - View that became visible.
  - onHide
```
 void onHide(@NonNull() View view)
```
    Called whenever a PSPDFKit view has been hidden.
    
    Parameters:
    
    view - View that became hidden.