我有一个意图服务,在后台下载文件,注册广播接收器以监听下载完成,但永远不会进入接收器的onReceive()
功能。该文件似乎完成下载,我可以在文件资源管理器中看到它,并从DownloadManager获取状态为SUCCESS的消息。在下载成功消息之前,我收到错误Failed to chmod /mnt/internal_sd/../filedownloaded
意图从主要活动onCreate开始:
Intent i = new Intent(context, MyIntentService.class);
startService(i);
意图服务:
public class MyIntentService extends IntentService {
DownloadManager downloadManager;
@Override
protected void onHandleIntent(Intent intent) {
IntentFilter filter = new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
registerReceiver(downloadReceiver, filter);
downloadFile();
}
void downloadFile(Uri downloadUri) {
downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
DownloadManager.Request request = new DownloadManager.Request(downloadUri);
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI);
request.setAllowedOverRoaming(false);
request.setTitle("My Andorid App Download");
request.setDestinationInExternalFilesDir(getApplicationContext(), null, sku + ".apk");
long downloadNum = downloadManager.enqueue(request);
}
private BroadcastReceiver downloadReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
System.out.println("does not get in here.");
long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, 0);
Uri u = downloadManager.getUriForDownloadedFile(id);
}
};
}
清单:
<service
android:name="com.example.MyIntentService"
android:exported="false">
<intent-filter>
<action android:name="android.intent.action.DOWNLOAD_COMPLETE" />
</intent-filter>
</service>
听起来像chmod错误失败的权限问题,但我无法弄清楚是什么。
答案 0 :(得分:1)
我发现了我的问题。您不应该在意向服务中拥有广播接收器,因为意图服务在单独的线程上运行,它将执行onHandleIntent()
中的所有内容然后消失。在下载管理器广播下载完成之前,我的意图服务已经消失。