Question

我正在尝试使用Android的DownloadManager下载文件，并尝试使用日志语句通过控制台打印下载内容。虽然文件下载正确，但是我看不到下载进度的日志声明这是我的代码

 private fun downloadPdf(fileName: String?, fileExtension: String?, destinationDirectory: String?, url: String?) {
        val downloadManager = getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
        val uri = Uri.parse(url)
        val request = DownloadManager.Request(uri)
        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
        request.setDestinationInExternalPublicDir(destinationDirectory, fileName + fileExtension)
        val downloadId = downloadManager.enqueue(request)

        thread {
            val query = DownloadManager.Query()
            query.setFilterById(downloadId)

            val cursor = downloadManager.query(query)

            if(cursor.moveToFirst()){
                val sizeIndex = cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES)
                val downloadedIndex = cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR)
                val size = cursor.getInt(sizeIndex)
                val downloaded = cursor.getInt(downloadedIndex)

                val progress: Long
                if(size != -1){
                    progress = downloaded * 100L / size
                    runOnUiThread {
                        Log.i("pritishsawantprogress",progress.toString())
                    }
                }
            }
        }
    }

任何帮助将不胜感激

Answer 1

for const QJsonValue& value : array) {

    // here I want to set the value for the 'id' key to 0

    addRecording(new Recording(value.toObject()));
}

DownloadManager下载进度不可见

1 个答案: