Key (library 4.14.2 API)

All Known Subinterfaces:

Transformation<T>

All Known Implementing Classes:

AndroidResourceSignature, BitmapDrawableTransformation, BitmapTransformation, CenterCrop, CenterInside, CircleCrop, DrawableTransformation, EmptySignature, FitCenter, GifDrawableTransformation, GlideUrl, GranularRoundedCorners, MediaStoreSignature, MultiTransformation, ObjectKey, Options, Rotate, RoundedCorners, UnitTransformation
```
public interface Key
```
An interface that uniquely identifies some put of data. Implementations must implement Object.equals(Object) and Object.hashCode(). Implementations are generally expected to add all uniquely identifying information used in in Object.equals(Object)} and Object.hashCode()} to the given MessageDigest in updateDiskCacheKey(java.security.MessageDigest)}, although this requirement is not as strict for partial cache key signatures.

Field Summary

Fields
Modifier and Type Field Description

static java.nio.charset.Charset CHARSET

static java.lang.String STRING_CHARSET_NAME

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object o)`	For caching to work correctly, implementations must implement this method and `hashCode()`.
`int`	`hashCode()`	For caching to work correctly, implementations must implement this method and `equals(Object)`.
`void`	`updateDiskCacheKey(java.security.MessageDigest messageDigest)`	Adds all uniquely identifying information to the given digest.

- Field Detail
  - STRING_CHARSET_NAME
```
static final java.lang.String STRING_CHARSET_NAME
```
    See Also:
    
    Constant Field Values
  - CHARSET
```
static final java.nio.charset.Charset CHARSET
```
- Method Detail
  - updateDiskCacheKey
```
void updateDiskCacheKey(@NonNull
                        java.security.MessageDigest messageDigest)
```
    Adds all uniquely identifying information to the given digest.
    Note - Using MessageDigest.reset() inside of this method will result in undefined behavior.
  - equals
```
boolean equals(java.lang.Object o)
```
    For caching to work correctly, implementations must implement this method and hashCode().
    
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
int hashCode()
```
    For caching to work correctly, implementations must implement this method and equals(Object).
    
    Overrides:
    
    hashCode in class java.lang.Object