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Added in API level 1

DownloadListener

Kotlin |Java

public interface DownloadListener

android.webkit.DownloadListener

Summary

Public methods
`abstract void`	`onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength)` Notify the host application that a file should be downloaded

Public methods

onDownloadStart

Added in API level 1

public abstract void onDownloadStart (String url, 
                String userAgent, 
                String contentDisposition, 
                String mimetype, 
                long contentLength)

Notify the host application that a file should be downloaded

Parameters
`url`	`String`: The full url to the content that should be downloaded
`userAgent`	`String`: the user agent to be used for the download.
`contentDisposition`	`String`: Content-disposition http header, if present.
`mimetype`	`String`: The mimetype of the content reported by the server
`contentLength`	`long`: The file size reported by the server

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Last updated 2026-08-03 UTC.

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