建网站卖,dede手机网站模板修改,推广标题怎么写,网站蜘蛛爬行记录使用步骤分为两步
第一步导入 okhttp3 依赖
第二步调用本文提供的 utils
第一步这里不做说明了#xff0c;直接提供第二步复制即用 DownloadUtil 中 download 为下载文件 参数说明 这里主要看你把 destFileName 下载文件名称定义为什么后缀#xff0c;比如我定义为 .mp4 下…使用步骤分为两步
第一步导入 okhttp3 依赖
第二步调用本文提供的 utils
第一步这里不做说明了直接提供第二步复制即用 DownloadUtil 中 download 为下载文件 参数说明 这里主要看你把 destFileName 下载文件名称定义为什么后缀比如我定义为 .mp4 下载后 就是 mp4 格式
这里 destFileDir 下载目录要说一下如果没有开启存储权限或者使用了系统默认路径就会报错 比如 /0 文件一类的错误怎么使用可以参考 open failed: ENOENT (No such file or directory) 解决办法
DownloadUtil 中 saveVideoToAlbum 为将下载好的视频更新到手机图库中原来的放式已经随着安全性提高不适用了这里基本就是复制出一份更新到系统层的文件夹
源码
DownloadUtil.download(mVideoUrl,getUrlPath(),sing示例名称${System.currentTimeMillis()}.mp4,object : DownloadUtil.OnDownloadListener{override fun onDownloadSuccess(file: File?) {下载成功.toast()//更新视频到相册DownloadUtil.saveVideoToAlbum(thisMoreActivity,file?.absolutePath)Log.e(视频下载, 下载成功: ${file?.absolutePath})}override fun onDownloading(progress: Int) {Log.e(视频下载, 下载进度:${progress})}override fun onDownloadFailed(e: Exception?) {LoadingSingDialog.dismiss()Log.e(视频下载, 下载失败:${e?.printStackTrace()})}})DownloadUtil
object DownloadUtil {private var okHttpClient: OkHttpClient? null/*** param url 下载连接* param destFileDir 下载的文件储存目录* param destFileName 下载文件名称* param listener 下载监听*/fun download(url: String, destFileDir: String, destFileName: String, listener: OnDownloadListener) {if (url null || url ){return}if (okHttpClient null){okHttpClient OkHttpClient()}val request: Request Request.Builder().url(url).build()okHttpClient!!.newCall(request).enqueue(object : Callback {override fun onFailure(call: Call, e: IOException) {// 下载失败监听回调listener.onDownloadFailed(e)}Throws(IOException::class)override fun onResponse(call: Call, response: Response) {if (response.body ! null) {var inputStream: InputStream? nullval buf ByteArray(2048)var len 0var fos: FileOutputStream? null// 储存下载文件的目录val dir File(destFileDir)if (!dir.exists()) {dir.mkdirs()}val file File(dir, destFileName)try {inputStream response.body!!.byteStream()val total: Long response.body!!.contentLength()fos FileOutputStream(file)var sum: Long 0while (inputStream.read(buf).also { len it } ! -1) {fos.write(buf, 0, len)sum len.toLong()val progress (sum * 1.0f / total * 100).toInt()// 下载中更新进度条listener.onDownloading(progress)}fos.flush()// 下载完成listener.onDownloadSuccess(file)} catch (e: Exception) {listener.onDownloadFailed(e)} finally {try {inputStream?.close()} catch (e: IOException) {listener.onDownloadFailed(e)}try {fos?.close()} catch (e: IOException) {listener.onDownloadFailed(e)}}}else{listener.onDownloadFailed(IOException(接口失败))}}})}interface OnDownloadListener {/*** param file 下载成功后的文件*/fun onDownloadSuccess(file: File?)/*** param progress 下载进度*/fun onDownloading(progress: Int)/*** param e 下载异常信息*/fun onDownloadFailed(e: Exception?)}/*** 将视频保存到系统相册*/fun saveVideoToAlbum(context: Context, videoFile: String?): Boolean {if (videoFile null || videoFile ){return false}return if (Build.VERSION.SDK_INT Build.VERSION_CODES.Q) {saveVideoToAlbumBeforeQ(context, videoFile)} else {saveVideoToAlbumAfterQ(context, videoFile)}}private fun saveVideoToAlbumAfterQ(context: Context, videoFile: String): Boolean {return try {val contentResolver context.contentResolverval tempFile File(videoFile)val contentValues getVideoContentValues(context, tempFile, System.currentTimeMillis())val uri contentResolver.insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, contentValues)copyFileAfterQ(context, contentResolver, tempFile, uri)contentValues.clear()contentValues.put(MediaStore.MediaColumns.IS_PENDING, 0)context.contentResolver.update(uri!!, contentValues, null, null)context.sendBroadcast(Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, uri))true} catch (e: java.lang.Exception) {e.printStackTrace()false}}private fun saveVideoToAlbumBeforeQ(context: Context, videoFile: String): Boolean {val picDir Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)val tempFile File(videoFile)val destFile File(picDir, context.packageName File.separator tempFile.name)var ins: FileInputStream? nullvar ous: BufferedOutputStream? nullreturn try {ins FileInputStream(tempFile)ous BufferedOutputStream(FileOutputStream(destFile))var nread 0Lval buf ByteArray(1024)var n: Intwhile (ins.read(buf).also { n it } 0) {ous.write(buf, 0, n)nread n.toLong()}MediaScannerConnection.scanFile(context, arrayOf(destFile.absolutePath), arrayOf(video/*)) { path: String?, uri: Uri? - }true} catch (e: java.lang.Exception) {e.printStackTrace()false} finally {try {ins?.close()ous?.close()} catch (e: IOException) {e.printStackTrace()}}}Throws(IOException::class)private fun copyFileAfterQ(context: Context,localContentResolver: ContentResolver,tempFile: File,localUri: Uri?) {if (Build.VERSION.SDK_INT Build.VERSION_CODES.Q context.applicationInfo.targetSdkVersion Build.VERSION_CODES.Q) {//拷贝文件到相册的uri,android10及以上得这么干否则不会显示。可以参考ScreenMediaRecorder的save方法val os localContentResolver.openOutputStream(localUri!!)Files.copy(tempFile.toPath(), os)os!!.close()tempFile.delete()}}/*** 获取视频的contentValue*/private fun getVideoContentValues(context: Context, paramFile: File, timestamp: Long): ContentValues {val localContentValues ContentValues()if (Build.VERSION.SDK_INT Build.VERSION_CODES.Q) {localContentValues.put(MediaStore.Video.Media.RELATIVE_PATH, Environment.DIRECTORY_DCIM File.separator context.packageName)}localContentValues.put(MediaStore.Video.Media.TITLE, paramFile.name)localContentValues.put(MediaStore.Video.Media.DISPLAY_NAME, paramFile.name)localContentValues.put(MediaStore.Video.Media.MIME_TYPE, video/mp4)localContentValues.put(MediaStore.Video.Media.DATE_TAKEN, timestamp)localContentValues.put(MediaStore.Video.Media.DATE_MODIFIED, timestamp)localContentValues.put(MediaStore.Video.Media.DATE_ADDED, timestamp)localContentValues.put(MediaStore.Video.Media.SIZE, paramFile.length())return localContentValues}}
