如何解决下载失败 - Kotlin
我是 Kotlin 的新手,我正在创建一个项目。我的任务是下载音频(mp3 格式)。我在 logcat 中没有收到任何错误,但是在尝试下载音频时出现“下载失败”。这是我的 AsyncTask 文件:
class DownloadAudioFromUrl(val context: Context,val audio: Audio) {
@RequiresApi(Build.VERSION_CODES.O)
fun download() {
try {
val audioName = audio.title + LocalDateTime.Now() + ".mp3"
val downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
val uri = Uri.parse(audio.filePath)
val request = DownloadManager.Request(uri)
request.setAllowednetworkTypes(DownloadManager.Request.NETWORK_WIFI)
.setTitle(audio.title)
.setDescription("Downloading: " + audio.title)
.setAllowedOverMetered(true)
.setAllowedOverRoaming(true)
.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS,audioName)
downloadManager.enqueue(request)
} catch (e: Exception) {
println("Error downloading: $e")
}
}
}
curPlayingAudio 不为空。 这是我的清单:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.daniil_holdings.soundy">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<application
android:usesCleartextTraffic="true"
android:name=".soundyApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme.NoActionBar">
<service android:name=".exoplayer.MusicService">
<intent-filter>
<action android:name="android.media.browse.MediabrowserService" />
</intent-filter>
</service>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<Meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/res"/>
</provider>
<activity android:name=".ui.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
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