Package com.bumptech.glide.util

Class Util

java.lang.Object

com.bumptech.glide.util.Util

public final class Util
extends Object

A collection of assorted utility classes.

Method Summary

Modifier and Type	Method	Description
static void	assertBackgroundThread()	Throws an IllegalArgumentException if called on the main thread.
static void	assertMainThread()	Throws an IllegalArgumentException if called on a thread other than the main thread.
static boolean	bothBaseRequestOptionsNullEquivalentOrEquals(BaseRequestOptions<?> a, BaseRequestOptions<?> b)
static boolean	bothModelsNullEquivalentOrEquals(Object a, Object b)
static boolean	bothNullOrEqual(Object a, Object b)	Null-safe equivalent of a.equals(b).
static <T> Queue<T>	createQueue(int size)	Creates a Queue of the given size using Glide's preferred implementation.
static int	getBitmapByteSize(int width, int height, Bitmap.Config config)	Returns the in memory size of Bitmap with the given width, height, and Bitmap.Config.
static int	getBitmapByteSize(Bitmap bitmap)	Returns the in memory size of the given Bitmap in bytes.
static int	getBytesPerPixel(Bitmap.Config config)	Returns the number of bytes required to store each pixel of a Bitmap with the given config.
static int	getSize(Bitmap bitmap)	Deprecated. Use getBitmapByteSize(android.graphics.Bitmap) instead.
static <T> List<T>	getSnapshot(Collection<T> other)	Returns a copy of the given list that is safe to iterate over and perform actions that may modify the original list.
static int	hashCode(boolean value)
static int	hashCode(boolean value, int accumulator)
static int	hashCode(float value)
static int	hashCode(float value, int accumulator)
static int	hashCode(int value)
static int	hashCode(int value, int accumulator)
static int	hashCode(Object object, int accumulator)
static boolean	isOnBackgroundThread()	Returns true if called on a background thread, false otherwise.
static boolean	isOnMainThread()	Returns true if called on the main thread, false otherwise.
static boolean	isValidDimension(int dimen)
static boolean	isValidDimensions(int width, int height)	Returns true if width and height are both > 0 and/or equal to Target.SIZE_ORIGINAL.
static void	postOnUiThread(Runnable runnable)	Posts the given runnable to the UI thread using a shared Handler.
static void	removeCallbacksOnUiThread(Runnable runnable)	Removes the given runnable from the UI threads queue if it is still queued.
static String	sha256BytesToHex(byte[] bytes)	Returns the hex string of the given byte array representing a SHA256 hash.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

sha256BytesToHex

@NonNull
public static String sha256BytesToHex(@NonNull
 byte[] bytes)

Returns the hex string of the given byte array representing a SHA256 hash.

getSize

@Deprecated
public static int getSize(@NonNull
 Bitmap bitmap)

Deprecated.

Use getBitmapByteSize(android.graphics.Bitmap) instead. Scheduled to be removed in Glide 4.0.

Returns the allocated byte size of the given bitmap.

See Also:

• getBitmapByteSize(android.graphics.Bitmap)

getBitmapByteSize

public static int getBitmapByteSize(@NonNull
 Bitmap bitmap)

Returns the in memory size of the given Bitmap in bytes.

getBitmapByteSize

public static int getBitmapByteSize(int width,
 int height,
 @Nullable
 Bitmap.Config config)

Returns the in memory size of Bitmap with the given width, height, and Bitmap.Config.

getBytesPerPixel

public static int getBytesPerPixel(@Nullable
 Bitmap.Config config)

Returns the number of bytes required to store each pixel of a Bitmap with the given config.

Defaults to Bitmap.Config.ARGB_8888 if config is null.

isValidDimensions

public static boolean isValidDimensions(int width,
 int height)

Returns true if width and height are both > 0 and/or equal to Target.SIZE_ORIGINAL.

isValidDimension

public static boolean isValidDimension(int dimen)

postOnUiThread

public static void postOnUiThread(Runnable runnable)

Posts the given runnable to the UI thread using a shared Handler.

removeCallbacksOnUiThread

public static void removeCallbacksOnUiThread(Runnable runnable)

Removes the given runnable from the UI threads queue if it is still queued.

assertMainThread

public static void assertMainThread()

Throws an IllegalArgumentException if called on a thread other than the main thread.

assertBackgroundThread

public static void assertBackgroundThread()

Throws an IllegalArgumentException if called on the main thread.

isOnMainThread

public static boolean isOnMainThread()

Returns true if called on the main thread, false otherwise.

isOnBackgroundThread

public static boolean isOnBackgroundThread()

Returns true if called on a background thread, false otherwise.

createQueue

@NonNull
public static <T> Queue<T> createQueue(int size)

Creates a Queue of the given size using Glide's preferred implementation.

getSnapshot

@NonNull
public static <T> List<T> getSnapshot(@NonNull
 Collection<T> other)

Returns a copy of the given list that is safe to iterate over and perform actions that may modify the original list.

See #303, #375, #322, #2262.

bothNullOrEqual

public static boolean bothNullOrEqual(@Nullable
 Object a,
 @Nullable
 Object b)

Null-safe equivalent of a.equals(b).

See Also:

• Objects.equals(java.lang.Object, java.lang.Object)

bothModelsNullEquivalentOrEquals

public static boolean bothModelsNullEquivalentOrEquals(@Nullable
 Object a,
 @Nullable
 Object b)

bothBaseRequestOptionsNullEquivalentOrEquals

public static boolean bothBaseRequestOptionsNullEquivalentOrEquals(@Nullable
 BaseRequestOptions<?> a,
 @Nullable
 BaseRequestOptions<?> b)

hashCode

public static int hashCode(int value)

hashCode

public static int hashCode(int value,
 int accumulator)

hashCode

public static int hashCode(float value)

hashCode

public static int hashCode(float value,
 int accumulator)

hashCode

public static int hashCode(@Nullable
 Object object,
 int accumulator)

hashCode

public static int hashCode(boolean value,
 int accumulator)

hashCode

public static int hashCode(boolean value)