IT. Expert System.

All Implemented Interfaces:

Serializable, Comparable<Bitmap.Config>

Enclosing class:

Bitmap

public static enum Bitmap.Config
extends Enum<Bitmap.Config>

• Enum Constant Summary

  Enum Constants

  Enum Constant and Description
  ALPHA_8 Each pixel is stored as a single translucency (alpha) channel.
  ARGB_4444 Deprecated. Because of the poor quality of this configuration, it is advised to use ARGB_8888 instead.
  ARGB_8888 Each pixel is stored on 4 bytes.
  RGB_565 Each pixel is stored on 2 bytes and only the RGB channels are encoded: red is stored with 5 bits of precision (32 possible values), green is stored with 6 bits of precision (64 possible values) and blue is stored with 5 bits of precision.

• Method Summary

  Methods

  Modifier and Type	Method and Description
  static Bitmap.Config	valueOf(String name) Returns the enum constant of this type with the specified name.
  static Bitmap.Config[]	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, getSharedConstants, hashCode, name, ordinal, toString, valueOf

  • Methods inherited from class java.lang.Object

    getClass, notify, notifyAll, wait, wait, wait

• Enum Constant Detail

  • ALPHA_8

    public static final Bitmap.Config ALPHA_8

    Each pixel is stored as a single translucency (alpha) channel. This is very useful to efficiently store masks for instance. No color information is stored. With this configuration, each pixel requires 1 byte of memory.

  • RGB_565

    public static final Bitmap.Config RGB_565

    Each pixel is stored on 2 bytes and only the RGB channels are encoded: red is stored with 5 bits of precision (32 possible values), green is stored with 6 bits of precision (64 possible values) and blue is stored with 5 bits of precision. This configuration can produce slight visual artifacts depending on the configuration of the source. For instance, without dithering, the result might show a greenish tint. To get better results dithering should be applied. This configuration may be useful when using opaque bitmaps that do not require high color fidelity.

  • ARGB_4444

    @Deprecated
    public static final Bitmap.Config ARGB_4444

    Deprecated. Because of the poor quality of this configuration, it is advised to use ARGB_8888 instead.
    Each pixel is stored on 2 bytes. The three RGB color channels and the alpha channel (translucency) are stored with a 4 bits precision (16 possible values.) This configuration is mostly useful if the application needs to store translucency information but also needs to save memory. It is recommended to use ARGB_8888 instead of this configuration.

  • ARGB_8888

    public static final Bitmap.Config ARGB_8888

    Each pixel is stored on 4 bytes. Each channel (RGB and alpha for translucency) is stored with 8 bits of precision (256 possible values.) This configuration is very flexible and offers the best quality. It should be used whenever possible.

• Method Detail

  • values

    public static Bitmap.Config[] 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 (Bitmap.Config c : Bitmap.Config.values())
        System.out.println(c);
    

    Returns:

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

  • valueOf

    public static Bitmap.Config 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