如果使用Android Kotlin的DownloadManager出现了"由于未知原因无法工作"的问题,可以尝试以下解决方法:
val connectivityManager = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
val networkInfo = connectivityManager.activeNetworkInfo
if (networkInfo == null || !networkInfo.isConnected) {
// 网络未连接
return
}
val url = "https://example.com/file.pdf"
val uri = Uri.parse(url)
val request = DownloadManager.Request(uri)
.setTitle("File Download")
.setDescription("Downloading File")
.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "file.pdf")
.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
val downloadManager = getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
val downloadId = downloadManager.enqueue(request)
val receiver = object : BroadcastReceiver() {
override fun onReceive(context: Context?, intent: Intent?) {
val action = intent?.action
if (DownloadManager.ACTION_DOWNLOAD_COMPLETE == action) {
val downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1)
// 根据downloadId来处理下载完成的逻辑
}
}
}
registerReceiver(receiver, IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE))
以上是一些常见的解决方法,但如果问题仍然存在,可能需要检查其他方面的错误或提供更多的代码和错误信息来帮助进一步排查问题。