Compartir a través de


View.DrawingCacheBackgroundColor Property

Definition

This member is deprecated. -or- Setting a solid background color for the drawing cache's bitmaps will improve performance and memory usage.

public virtual Android.Graphics.Color DrawingCacheBackgroundColor { [Android.Runtime.Register("getDrawingCacheBackgroundColor", "()I", "GetGetDrawingCacheBackgroundColorHandler")] get; [Android.Runtime.Register("setDrawingCacheBackgroundColor", "(I)V", "GetSetDrawingCacheBackgroundColor_IHandler")] set; }
[<get: Android.Runtime.Register("getDrawingCacheBackgroundColor", "()I", "GetGetDrawingCacheBackgroundColorHandler")>]
[<set: Android.Runtime.Register("setDrawingCacheBackgroundColor", "(I)V", "GetSetDrawingCacheBackgroundColor_IHandler")>]
member this.DrawingCacheBackgroundColor : Android.Graphics.Color with get, set

Property Value

The background color to used for the drawing cache's bitmap

Attributes

Remarks

Property getter documentation:

This member is deprecated. The view drawing cache was largely made obsolete with the introduction of hardware-accelerated rendering in API 11. With hardware-acceleration, intermediate cache layers are largely unnecessary and can easily result in a net loss in performance due to the cost of creating and updating the layer. In the rare cases where caching layers are useful, such as for alpha animations, #setLayerType(int, Paint) handles this with hardware rendering. For software-rendered snapshots of a small part of the View hierarchy or individual Views it is recommended to create a Canvas from either a Bitmap or android.graphics.Picture and call #draw(Canvas) on the View. However these software-rendered usages are discouraged and have compatibility issues with hardware-only rendering features such as android.graphics.Bitmap.Config#HARDWARE Config.HARDWARE bitmaps, real-time shadows, and outline clipping. For screenshots of the UI for feedback reports or unit testing the PixelCopy API is recommended.

Java documentation for android.view.View.getDrawingCacheBackgroundColor().

Property setter documentation:

Setting a solid background color for the drawing cache's bitmaps will improve performance and memory usage. Note, though that this should only be used if this view will always be drawn on top of a solid color.

This member is deprecated. The view drawing cache was largely made obsolete with the introduction of hardware-accelerated rendering in API 11. With hardware-acceleration, intermediate cache layers are largely unnecessary and can easily result in a net loss in performance due to the cost of creating and updating the layer. In the rare cases where caching layers are useful, such as for alpha animations, #setLayerType(int, Paint) handles this with hardware rendering. For software-rendered snapshots of a small part of the View hierarchy or individual Views it is recommended to create a Canvas from either a Bitmap or android.graphics.Picture and call #draw(Canvas) on the View. However these software-rendered usages are discouraged and have compatibility issues with hardware-only rendering features such as android.graphics.Bitmap.Config#HARDWARE Config.HARDWARE bitmaps, real-time shadows, and outline clipping. For screenshots of the UI for feedback reports or unit testing the PixelCopy API is recommended.

Java documentation for android.view.View.setDrawingCacheBackgroundColor(int).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Applies to

See also