com.bumptech.glide.load.model

Interface LazyHeaderFactory

public interface LazyHeaderFactory

An interface for lazily creating headers that allows expensive to calculate headers (oauth for example) to be generated in the background during the first fetch.

Implementations should implement equals() and hashcode()

.

Method Summary

Modifier and Type	Method and Description
String	buildHeader() Returns an http header, or null if no header could be built.

Method Detail

buildHeader

@Nullable
String buildHeader()

Returns an http header, or null if no header could be built.

Returning null or an empty String from this method will result in this particular key/value being excluded from the headers provided in the request. If there are multiple factories or values for a particular key, any non-null values will still be included for that key.