ShadowMessageQueue

java.lang.Object
- org.robolectric.shadows.ShadowMessageQueue

Direct Known Subclasses:

ShadowLegacyMessageQueue, ShadowPausedMessageQueue
```
@Implements(value=android.os.MessageQueue.class,
            shadowPicker=Picker.class)
public abstract class ShadowMessageQueue
extends Object
```
The shadow API for MessageQueue.
Different shadow implementations will be used depending on the current LooperMode. See ShadowLegacyMessageQueue and ShadowPausedMessageQueue for details.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class ShadowMessageQueue.Picker
The shadow Picker for this class.

Constructor Summary

Constructors
Constructor Description

ShadowMessageQueue()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract Message`	`getHead()`	Retrieves the current Message at the top of the queue.
`abstract Scheduler`	`getScheduler()`	Return this queue's Scheduler.
`abstract void`	`reset()`	Reset the messageQueue state.
`abstract void`	`setHead(Message msg)`	Sets the current Message at the top of the queue.
`abstract void`	`setScheduler(Scheduler scheduler)`	Set this queue's Scheduler.

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

- Constructor Detail
  - ShadowMessageQueue
```
public ShadowMessageQueue()
```
- Method Detail
  - getScheduler
```
public abstract Scheduler getScheduler()
```
    Return this queue's Scheduler.
    Only supported in LooperMode.Mode.LEGACY.
  - setScheduler
```
public abstract void setScheduler(Scheduler scheduler)
```
    Set this queue's Scheduler.
    Only supported in LooperMode.Mode.LEGACY.
  - getHead
```
public abstract Message getHead()
```
    Retrieves the current Message at the top of the queue.
    Only supported in LooperMode.Mode.LEGACY.
  - setHead
```
public abstract void setHead(Message msg)
```
    Sets the current Message at the top of the queue.
    Only supported in LooperMode.Mode.LEGACY.
  - reset
```
public abstract void reset()
```
    Reset the messageQueue state. Should not be called by tests - it intended for use by the Robolectric framework.