Interface Downloader
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- All Known Implementing Classes:
DashDownloader
,HlsDownloader
,ProgressiveDownloader
,SegmentDownloader
,SsDownloader
public interface Downloader
Downloads and removes a piece of content.
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Nested Class Summary
Nested Classes Modifier and Type Interface Description static interface
Downloader.ProgressListener
Receives progress updates during download operations.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description void
cancel()
Permanently cancels the downloading by this downloader.void
download(Downloader.ProgressListener progressListener)
Downloads the content.void
remove()
Removes the content.
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Method Detail
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download
void download(@Nullable Downloader.ProgressListener progressListener) throws IOException, InterruptedException
Downloads the content.If downloading fails, this method can be called again to resume the download. It cannot be called again after the download has been
canceled
.If downloading is canceled whilst this method is executing, then it is expected that it will return reasonably quickly. However, there are no guarantees about how the method will return, meaning that it can return without throwing, or by throwing any of its documented exceptions. The caller must use its own knowledge about whether downloading has been canceled to determine whether this is why the method has returned, rather than relying on the method returning in a particular way.
- Parameters:
progressListener
- A listener to receive progress updates, ornull
.- Throws:
IOException
- If the download failed to complete successfully.InterruptedException
- If the download was interrupted.CancellationException
- If the download was canceled.
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cancel
void cancel()
Permanently cancels the downloading by this downloader. The caller should also interrupt the downloading thread immediately after calling this method.Once canceled,
download(com.google.android.exoplayer2.offline.Downloader.ProgressListener)
cannot be called again.
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remove
void remove()
Removes the content.
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