setLayerPaint

Updates the Paint object used with the current layer (used only if the current layer type is not set to LAYER_TYPE_NONE). Changed properties of the Paint provided to setLayerType will be used the next time the View is redrawn, but setLayerPaint must be called to ensure that the view gets redrawn immediately.

A layer is associated with an optional android.graphics.Paint instance that controls how the layer is composed on screen. The following properties of the paint are taken into account when composing the layer:

• Translucency (alpha)
• Blending mode
• Color filter

If this view has an alpha value set to <1.0 by calling View#setAlpha(float), the alpha value of the layer's paint is replaced by this view's alpha value. Calling View#setAlpha(float) is therefore equivalent to setting a hardware layer on this view and providing a paint with the desired alpha value.

Parameters

See also