DataProvider

interface DataProvider

A data provider is allows PSPDFKit to load a PDF document for any custom source (e.g. cloud providers, files, in-memory, data providers, etc.).

Classes implementing this interface need to implement all methods correctly to allow PSPDFKit loading documents. Furthermore, if classes with this interface are meant to be used with , they must also implement android.os.Parcelable. If you plan to use the DataProvider only for PdfFragment parcelation code is not necessary.

All callbacks will be called on a background thread.

Inheritors

Properties

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Constant value that can be return in getSize to signal an error during retrieval of the actual file size.
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Constant value that can be returned in read to signal an error while reading.

Functions

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abstract fun getSize(): Long
Return the actual file size of the PDF document which is provided by this data provider.
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abstract fun getTitle(): String
Displayable document title to be used if PDF document does not contain metadata.
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abstract fun getUid(): String
Unique document identifier used in all caching processes in PSPDFKit.
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abstract fun read(size: Long, offset: Long): Array<Byte>
Called by PSPDFKit to read data from the document.
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abstract fun release()
Called when the provided document is being closed.