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ImageDecoder.DecodeAsAlphaMaskEnabled Property

  • Reference

Definition

Namespace:
Android.Graphics
Assembly:
Mono.Android.dll

Return whether to treat single channel input as alpha. -or- Specify whether to potentially treat the output as an alpha mask.

public bool DecodeAsAlphaMaskEnabled { [Android.Runtime.Register("isDecodeAsAlphaMaskEnabled", "()Z", "", ApiSince=28)] get; [Android.Runtime.Register("setDecodeAsAlphaMaskEnabled", "(Z)V", "", ApiSince=28)] set; }
[<get: Android.Runtime.Register("isDecodeAsAlphaMaskEnabled", "()Z", "", ApiSince=28)>]
[<set: Android.Runtime.Register("setDecodeAsAlphaMaskEnabled", "(Z)V", "", ApiSince=28)>]
member this.DecodeAsAlphaMaskEnabled : bool with get, set

Property Value

Boolean
Attributes
RegisterAttribute

Remarks

Property getter documentation:

Return whether to treat single channel input as alpha.

This returns whether #setDecodeAsAlphaMaskEnabled was set to true. It may still return true even if the image has more than one channel and therefore will not be treated as an alpha mask.

Java documentation for android.graphics.ImageDecoder.isDecodeAsAlphaMaskEnabled().

Property setter documentation:

Specify whether to potentially treat the output as an alpha mask.

If this is set to true and the image is encoded in a format with only one channel, treat that channel as alpha. Otherwise this call has no effect.

This is incompatible with #ALLOCATOR_HARDWARE. Trying to combine them will result in #decodeDrawable decodeDrawable/ #decodeBitmap decodeBitmap throwing an java.lang.IllegalStateException.

Like all setters on ImageDecoder, this must be called inside OnHeaderDecodedListener#onHeaderDecoded onHeaderDecoded.

Java documentation for android.graphics.ImageDecoder.setDecodeAsAlphaMaskEnabled(boolean).

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