com.liulishuo.filedownloader.util

Interface FileDownloadHelper.OutputStreamCreator

Enclosing class:

FileDownloadHelper

public static interface FileDownloadHelper.OutputStreamCreator

Method Summary

Modifier and Type	Method and Description
FileDownloadOutputStream	create(java.io.File file) The output stream creator is used for creating FileDownloadOutputStream which is used to write the input stream to the file for downloading.
boolean	supportSeek()

Method Detail

create

FileDownloadOutputStream create(java.io.File file)
                         throws java.io.IOException

The output stream creator is used for creating FileDownloadOutputStream which is used to write the input stream to the file for downloading.

Note: please create a output stream which append the content to the exist file, which means that bytes would be written to the end of the file rather than the beginning.

Parameters:

file - the file will used for storing the downloading content.

Returns:

The output stream used to write downloading byte array to the file.

Throws:

java.io.FileNotFoundException - if the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason

java.io.IOException

supportSeek

boolean supportSeek()

Returns:

true if the FileDownloadOutputStream is created through create(File) support FileDownloadOutputStream.seek(long) function. If the FileDownloadOutputStream is created through create(File) doesn't support FileDownloadOutputStream.seek(long), please return false, in order to let the internal mechanism can predict this situation, and handle it smoothly.