Package io.flutter.embedding.android

Enum TransparencyMode

java.lang.Object

java.lang.Enum<TransparencyMode>

io.flutter.embedding.android.TransparencyMode

All Implemented Interfaces:

Serializable, Comparable<TransparencyMode>

public enum TransparencyMode
extends Enum<TransparencyMode>

Transparency mode for a Flutter UI.

TransparencyMode impacts the visual behavior and performance of a FlutterSurfaceView, which is displayed when a Flutter UI uses RenderMode.surface.

TransparencyMode does not impact FlutterTextureView, which is displayed when a Flutter UI uses RenderMode.texture, because a FlutterTextureView automatically comes with transparency.

Enum Constant Summary

Enum Constants

Enum Constant	Description
opaque	Renders a Flutter UI without any transparency.
transparent	Renders a Flutter UI with transparency.

Method Summary

Modifier and Type	Method	Description
static TransparencyMode	valueOf(String name)	Returns the enum constant of this type with the specified name.
static TransparencyMode[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

opaque

public static final TransparencyMode opaque

Renders a Flutter UI without any transparency. This affects Flutter UI's with RenderMode.surface by introducing a base color of black, and places the FlutterSurfaceView's Window behind all other content.

In RenderMode.surface, this mode is the most performant and is a good choice for fullscreen Flutter UIs that will not undergo Fragment transactions. If this mode is used within a Fragment, and that Fragment is replaced by another one, a brief black flicker may be visible during the switch.

transparent

public static final TransparencyMode transparent

Renders a Flutter UI with transparency. This affects Flutter UI's in RenderMode.surface by allowing background transparency, and places the FlutterSurfaceView's Window on top of all other content.

In RenderMode.surface, this mode is less performant than opaque, but this mode avoids the black flicker problem that opaque has when going through Fragment transactions. Consider using this TransparencyMode if you intend to switch Fragments at runtime that contain a Flutter UI.

Method Detail

values

public static TransparencyMode[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (TransparencyMode c : TransparencyMode.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static TransparencyMode valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null