RenderSurface

All Known Implementing Classes:

FlutterImageView, FlutterSurfaceView, FlutterTextureView
```
public interface RenderSurface
```
Owns a Surface that FlutterRenderer would like to paint.
RenderSurface is responsible for providing a Surface to a given FlutterRenderer when requested, and then notify that FlutterRenderer when the Surface changes, or is destroyed.
The behavior of providing a Surface is delegated to this interface because the timing of a Surface's availability is determined by Android. Therefore, an accessor method would not fulfill the requirements. Therefore, a RenderSurface is given a FlutterRenderer, which the RenderSurface is expected to notify as a Surface becomes available, changes, or is destroyed.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`attachToRenderer(FlutterRenderer renderer)`	Instructs this `RenderSurface` to give its `Surface` to the given `FlutterRenderer` so that Flutter can paint pixels on it.
`void`	`detachFromRenderer()`	Instructs this `RenderSurface` to stop forwarding `Surface` notifications to the `FlutterRenderer` that was previously connected with `attachToRenderer(FlutterRenderer)`.
`FlutterRenderer`	`getAttachedRenderer()`	Returns the `FlutterRenderer` that is attached to this `RenderSurface`, or null if no `FlutterRenderer` is currently attached.
`void`	`pause()`	Instructs this `RenderSurface` to stop forwarding `Surface` notifications to the `FlutterRenderer` that was previously connected with `attachToRenderer(FlutterRenderer)`.

- Method Detail
  - getAttachedRenderer
```
@Nullable
FlutterRenderer getAttachedRenderer()
```
    Returns the FlutterRenderer that is attached to this RenderSurface, or null if no FlutterRenderer is currently attached.
  - attachToRenderer
```
void attachToRenderer(@NonNull
                      FlutterRenderer renderer)
```
    Instructs this RenderSurface to give its Surface to the given FlutterRenderer so that Flutter can paint pixels on it.
    After this call, RenderSurface is expected to invoke the following methods on FlutterRenderer at the appropriate times:
    
    FlutterRenderer.startRenderingToSurface(Surface, boolean)
    FlutterRenderer.surfaceChanged(int, int)}
    FlutterRenderer.stopRenderingToSurface()
  - detachFromRenderer
```
void detachFromRenderer()
```
    Instructs this RenderSurface to stop forwarding Surface notifications to the FlutterRenderer that was previously connected with attachToRenderer(FlutterRenderer).
    This RenderSurface should also clean up any references related to the previously connected FlutterRenderer.
  - pause
```
void pause()
```
    Instructs this RenderSurface to stop forwarding Surface notifications to the FlutterRenderer that was previously connected with attachToRenderer(FlutterRenderer).