Question

我是Android的新手，我正在开发一个从给定网址下载文件的项目，它适用于mp3，但无法下载视频文件，如果下载的话还没有打开.... plz help 我的代码是这样的：

public class MainActivity extends AppCompatActivity  {
    String myUrl = "my url";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        DownloadManager.Request request=new 
        DownloadManager.Request(Uri.parse(myUrl));
        request.setTitle("download");
        request.setDescription("your file is downloading ...");
        request.allowScanningByMediaScanner();

  request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);

        request.setDestinationInExternalFilesDir(MainActivity.this, Environment.DIRECTORY_DOWNLOADS,"testing.mp4");

DownloadManager manager =(DownloadManager)getSystemService(Context.DOWNLOAD_SERVICE);
        manager.enqueue(request);
}

Answer 1

添加以下行：

request.setAllowedNetworkTypes(DownloadManager.Request.NETWO‌RK_WIFI | DownloadManager.Request.NETWORK_MOBILE)

使用Android中的DownloadManager下载视频文件

1 个答案: