BackgroundLayer (NASA WorldWind Android)

java.lang.Object
- gov.nasa.worldwind.layer.AbstractLayer
- - gov.nasa.worldwind.layer.RenderableLayer
  - - gov.nasa.worldwind.layer.BackgroundLayer

All Implemented Interfaces:

Layer, java.lang.Iterable<Renderable>
```
public class BackgroundLayer
extends RenderableLayer
```
Displays a single image spanning the globe. By default, BackgroundLayer is configured to display NASA's Blue Marble next generation image at 40km resolution from the built-in WorldWind library resource res/drawable/gov_nasa_worldwind_worldtopobathy2004053.

Constructor Summary

Constructors
Constructor	Description
`BackgroundLayer()`	Constructs a Blue Marble background layer with the built-in WorldWind library resource res/drawable/gov_nasa_worldwind_worldtopobathy2004053.
`BackgroundLayer(ImageSource imageSource, ImageOptions imageOptions)`	Constructs a background image layer with an image source.

Method Summary
- Methods inherited from class gov.nasa.worldwind.layer.RenderableLayer
  addAllRenderables, addAllRenderables, addRenderable, addRenderable, clearRenderables, count, getRenderable, indexOfRenderable, indexOfRenderableNamed, indexOfRenderableWithProperty, iterator, removeAllRenderables, removeRenderable, removeRenderable, setRenderable
- Methods inherited from class gov.nasa.worldwind.layer.AbstractLayer
  getDisplayName, getMaxActiveAltitude, getMinActiveAltitude, getOpacity, getUserProperty, hasUserProperty, isEnabled, isPickEnabled, isWithinActiveAltitudes, putUserProperty, removeUserProperty, render, setDisplayName, setEnabled, setMaxActiveAltitude, setMinActiveAltitude, setOpacity, setPickEnabled
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
- Methods inherited from interface java.lang.Iterable
  forEach, spliterator

- Constructor Detail
  - BackgroundLayer
```
public BackgroundLayer()
```
    Constructs a Blue Marble background layer with the built-in WorldWind library resource res/drawable/gov_nasa_worldwind_worldtopobathy2004053. The resource must be accessible from the Android Context associated with the WorldWindow.
  - BackgroundLayer
```
public BackgroundLayer(ImageSource imageSource,
                       ImageOptions imageOptions)
```
    Constructs a background image layer with an image source. The image's dimensions must be no greater than 2048 x 2048.
    
    Parameters:
    
    imageSource - the image source
    
    imageOptions - the image options, or null to use the default options
    
    Throws:
    
    java.lang.IllegalArgumentException - If the image source is null