Data
- The type of data that can be opened.public final class DataUrlLoader<Data> extends Object implements ModelLoader<String,Data>
See http://www.ietf.org/rfc/rfc2397.txt for a complete description of the 'data' URL scheme.
Briefly, a 'data' URL has the form:
data:[mediatype][;base64],some_data
Modifier and Type | Class and Description |
---|---|
static interface |
DataUrlLoader.DataDecoder<Data>
Allows decoding a specific type of data from a Data URL String.
|
static class |
DataUrlLoader.StreamFactory
Factory for loading
InputStream from Data URL string. |
ModelLoader.LoadData<Data>
Constructor and Description |
---|
DataUrlLoader(DataUrlLoader.DataDecoder<Data> dataDecoder) |
Modifier and Type | Method and Description |
---|---|
ModelLoader.LoadData<Data> |
buildLoadData(String model,
int width,
int height,
Options options)
Returns a
ModelLoader.LoadData containing a
DataFetcher required to decode the resource
represented by this model, as well as a set of Keys that
identify the data loaded by the DataFetcher as well as an
optional list of alternate keys from which equivalent data can be loaded. |
boolean |
handles(String url)
Returns true if the given model is a of a recognized type that this loader can probably load.
|
public DataUrlLoader(DataUrlLoader.DataDecoder<Data> dataDecoder)
public ModelLoader.LoadData<Data> buildLoadData(@NonNull String model, int width, int height, @NonNull Options options)
ModelLoader
ModelLoader.LoadData
containing a
DataFetcher
required to decode the resource
represented by this model, as well as a set of Keys
that
identify the data loaded by the DataFetcher
as well as an
optional list of alternate keys from which equivalent data can be loaded. The
DataFetcher
will not be used if the resource is already cached.
Note - If no valid data fetcher can be returned (for example if a model has a null URL), then it is acceptable to return a null data fetcher from this method.
buildLoadData
in interface ModelLoader<String,Data>
model
- The model representing the resource.width
- The width in pixels of the view or target the resource will be loaded into, or
Target.SIZE_ORIGINAL
to indicate that
the resource should be loaded at its original width.height
- The height in pixels of the view or target the resource will be loaded into, or
Target.SIZE_ORIGINAL
to indicate that
the resource should be loaded at its original height.public boolean handles(@NonNull String url)
ModelLoader
For example, you may want multiple Uri -> InputStream loaders. One might handle media store Uris, another might handle asset Uris, and a third might handle file Uris etc.
This method is generally expected to do no I/O and complete quickly, so best effort
results are acceptable. ModelLoaders
that return true from this method may
return null
from ModelLoader.buildLoadData(Object, int, int, Options)
handles
in interface ModelLoader<String,Data>