android - 从 kotlin Android 中的 url 下载视频?
问题描述
我想从 URL 下载视频。但它给出了一个错误:
E/ContentProviderNative:来自 {P:12600;U:11003} 的 onTransact 错误 2019-01-14 11:54:35.423 3518-22398/?E/DatabaseUtils:向包裹 java.lang.IllegalArgumentException 写入异常:未知 URI:在 com.android.providers.downloads.DownloadProvider.query(DownloadProvider.java:914) 上的 android.content 上的 content://downloads/public_downloads/6796。 ContentProvider.query(ContentProvider.java:1138) 在 android.content.ContentProvider.query(ContentProvider.java:1230) 在 android.content.ContentProvider$Transport.query(ContentProvider.java:251) 在 android.content.ContentProviderNative.onTransact (ContentProviderNative.java:112) 在 android.os.Binder.execTransact(Binder.java:752)
下载视频文件的代码如下: private var downloadReference: Long = 0 private lateinit var downloadManager: DownloadManager
private val receiver = object : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
val action = intent.action
if (action == DownloadManager.ACTION_DOWNLOAD_COMPLETE) {
val downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1)
if (downloadId != downloadReference) {
context.unregisterReceiver(this)
return
}
val query = DownloadManager.Query()
query.setFilterById(downloadReference)
val cursor = downloadManager.query(query)
cursor?.let {
if (cursor.moveToFirst()) {
val columnIndex = cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)
if (DownloadManager.STATUS_SUCCESSFUL == cursor.getInt(columnIndex)) {
var localFile = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI))
if (localFile.contains("file:///")) {
localFile = localFile.removePrefix("file:///").substringBeforeLast(File.separator)
}
//context.toast(context.resources.getString(R.string.saved, localFile), Toast.LENGTH_LONG)
} else if (DownloadManager.STATUS_FAILED == cursor.getInt(columnIndex)) {
// val message = context.resources.getString("error : ", cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_REASON)))
//context.toast(message, Toast.LENGTH_LONG)
}
}
cursor.close()
}
context.unregisterReceiver(this)
}
}
}
/////////// New Testing........
fun downloadFile(url: String, mimeType: String? = null) {
val guessFileName = URLUtil.guessFileName(url, null, mimeType)
System.out.println("LLLLLLLLLLLLLLLLLLL2 ");
// Timber.d("mimeType -> $mimeType guessFileName -> $guessFileName created by url -> $url")
val context = this
downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
val downloadUri = Uri.parse(url)
val request = DownloadManager.Request(downloadUri)
request.apply {
setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE or DownloadManager.Request.NETWORK_WIFI)
//setAllowedOverRoaming(true)
setTitle(guessFileName)
setDescription(guessFileName)
setVisibleInDownloadsUi(true)
allowScanningByMediaScanner()
setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
//request.setDestinationUri(Uri.fromFile(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)))
setDestinationInExternalPublicDir(Environment.DIRECTORY_PICTURES, guessFileName)
context.registerReceiver(receiver, IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE))
downloadReference = downloadManager.enqueue(this)
}
System.out.println("LLLLLLLLLLLLLLLLLLL23 ");
}
解决方案
使用下面的库:
implementation 'com.mindorks.android:prdownloader:0.5.0'
从给定 url 下载视频的代码如下:
fun downfile(urll:String,fileName:String){
if(!isFilePresent(fileName)) {
var mFile2: File? = File(Environment.getExternalStorageDirectory(), "WallpapersBillionaire")
System.out.println("File Foond " + mFile2!!.absolutePath)
var mFile3: File? = File(Environment.getExternalStorageDirectory(), "WallpapersBillionaire")
var downloadId = PRDownloader.download(urll, mFile2!!.absolutePath, fileName)
.build()
.setOnStartOrResumeListener(object : OnStartOrResumeListener {
override fun onStartOrResume() {
System.out.println("??????????????????? start")
}
})
.setOnPauseListener(object : OnPauseListener {
override fun onPause() {
}
})
.setOnCancelListener(object : OnCancelListener {
override fun onCancel() {
}
})
.setOnProgressListener(object : OnProgressListener {
override fun onProgress(progress: Progress) {
circlePeView.visibility = View.VISIBLE
var per = (progress.currentBytes.toFloat() / progress.totalBytes.toFloat()) * 100.00
//var perint = per*100
System.out.println("::??????????????????? Per : " + per + " ?? : " + progress.currentBytes + " ?? : " + progress.totalBytes)
circlePeView.setProgress(per.toInt())
}
})
.start(object : OnDownloadListener {
override fun onDownloadComplete() {
circlePeView.visibility = View.GONE
circlePeView.setProgress(0)
prefs = getSharedPreferences(PREFS_FILENAME, 0)
val editor = prefs!!.edit()
editor.putString(wall, "WallpapersBillionaire/" + fileName)
editor.apply()
try {
val myWallpaperManager = WallpaperManager.getInstance(applicationContext)
try {
myWallpaperManager.setResource(R.raw.wallp)
} catch (e: IOException) {
// TODO Auto-generated catch block
e.printStackTrace()
}
val intent = Intent(WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER)
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
intent.putExtra(WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT,
ComponentName(this@AnimattedViewpagerActivity, VideoLiveWallpaperService::class.java))
startActivity(intent)
} catch (e: Exception) {
val intent = Intent()
intent.setAction(WallpaperManager.ACTION_LIVE_WALLPAPER_CHOOSER)
try {
startActivity(intent)
}catch (e2: java.lang.Exception){
Toast.makeText(applicationContext,"Please long click on your home screen. Select Video Live Wallpapers form thier. Thanks",Toast.LENGTH_LONG).show()
}
}
System.out.println("??????????????????? complete")
}
override fun onError(error: Error) {
System.out.println("??????????????????? error " + error)
}
})
System.out.println("??????????????????? called")
}else{
System.out.println("File Foond ")
circlePeView.visibility = View.GONE
circlePeView.setProgress(0)
prefs = getSharedPreferences(PREFS_FILENAME, 0)
val editor = prefs!!.edit()
editor.putString(wall, "WallpapersBillionaire/" + fileName)
editor.apply()
try {
val myWallpaperManager = WallpaperManager.getInstance(applicationContext)
try {
myWallpaperManager.setResource(R.raw.wallp)
} catch (e: IOException) {
// TODO Auto-generated catch block
e.printStackTrace()
}
val intent = Intent(WallpaperManager.ACTION_CHANGE_LIVE_WALLPAPER)
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
intent.putExtra(WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT,
ComponentName(this@AnimattedViewpagerActivity, VideoLiveWallpaperService::class.java))
startActivity(intent)
} catch (e: Exception) {
val intent = Intent()
intent.setAction(WallpaperManager.ACTION_LIVE_WALLPAPER_CHOOSER)
try {
startActivity(intent)
}catch (e2: java.lang.Exception){
Toast.makeText(applicationContext,"Please long click on your home screen. Select Video Live Wallpapers form thier. Thanks",Toast.LENGTH_LONG).show()
}
}
System.out.println("??????????????????? complete")
}
}
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