using xam.Plugin.DownloadManager Xamarin forms - visual-studio

Question

i am using xam.plugin.downloadmanager to download files in my app,once file download i wnats to redirect to downloads native page to view which i was download from server. is there any way ?? plesae help me
this is my code Anroid main activity class
using Android.OS;
using Plugin.DownloadManager;
using Plugin.DownloadManager.Abstractions;
using Xamarin.Forms.PlatformConfiguration;
using System.Linq;
using System.IO;
namespace Expertential.Droid
{
[Activity(Label = "Expertential", Icon = "#mipmap/icon", Theme = "#style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle bundle)
{
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
base.OnCreate(bundle);
Downloaded();
global::Xamarin.Forms.Forms.Init(this, bundle);
Rg.Plugins.Popup.Popup.Init(this, bundle);
LoadApplication(new App());
}
public void Downloaded()
{
CrossDownloadManager.Current.PathNameForDownloadedFile = new System.Func<IDownloadFile, string>(file =>
{
string fileName = Android.Net.Uri.Parse(file.Url).Path.Split('/').Last();
return Path.Combine(ApplicationContext.GetExternalFilesDir(Android.OS.Environment.DirectoryDownloads).AbsolutePath, fileName);
});
}
}
}
viewmodel in here iam calling download .netstandard library
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
using System.Threading.Tasks;
using Expertential.Models;
using Expertential.Services;
using Expertential.ViewModels;
using Plugin.DownloadManager;
using Plugin.DownloadManager.Abstractions;
using Rg.Plugins.Popup.Services;
using Xamarin.Forms;
namespace Expertential.ViewModels
{
class CustomPopupViewModel :BaseViewModel
{
private CustomPopupViewModelService customPopupViewModelService;
private ObservableCollection<Attachments> attachment;
public ObservableCollection<Attachments> Attachment
{
get { return attachment; }
set
{
attachment = value;
RaisePropertyChanged(nameof(Attachment));
}
}
public CustomPopupViewModel()
{
}
private int _requertAttHeight;
public int requertAttHeight { get { return _requertAttHeight; }
set { _requertAttHeight = value;
RaisePropertyChanged(nameof(requertAttHeight));
}
}
private Boolean _taskLoader;
public Boolean taskLoader
{
get { return _taskLoader; }
set
{
_taskLoader = value;
RaisePropertyChanged(nameof(taskLoader));
}
}
public IDownloadFile File;
Boolean isDownloading = true;
#region custom function
public void GetAttachments(List<Attachments> attachment)
{
Attachment = new ObservableCollection<Attachments>();
if (attachment.Count > 0)
{
foreach (Attachments att in attachment)
{
var title = att.title;
string[] titleArray = title.Split('.');
if (titleArray.Length > 1)
{
setIconVisible(titleArray[1],att);
}
Attachment.Add(att);
}
requertAttHeight = 40 * attachment.Count;
}
}
public void setIconVisible(string content, Attachments att)
{
switch (content)
{
case "png":
case "jpg":
case "jpeg":
att.isWord = false;
att.isExcel = false;
att.isPdf = false;
att.isPpt = false;
att.isImage = true;
break;
case "ppt":
case "pptx":
att.isWord = false;
att.isExcel = false;
att.isPdf = false;
att.isPpt = true;
att.isImage = false;
break;
case "xlsx":
case "xls":
att.isWord = false;
att.isExcel = true;
att.isPdf = false;
att.isPpt = false;
att.isImage = false;
break;
case "docx":
att.isWord = true;
att.isExcel = false;
att.isPdf = false;
att.isPpt = false;
att.isImage = false;
break;
}
}
public async Task<string> GetFileFullUrl(string fileName)
{
var strValue = "";
customPopupViewModelService = new CustomPopupViewModelService();
strValue = await customPopupViewModelService.GetFileFullUrl(fileName);
return strValue;
}
public async void DownloadFile(string FileName)
{
Boolean target = false;
this.taskLoader = true;
var DownloadManager = CrossDownloadManager.Current;
var file = DownloadManager.CreateDownloadFile(FileName);
await Task.Yield();
await Task.Run(() =>
{
DownloadManager.Start(file, true);
while (isDownloading)
{
Task.Delay(100);
isDownloading = IsDownloading(file);
}
});
if (!isDownloading)
{
this.taskLoader = false;
target = await Application.Current.MainPage.DisplayAlert("Alert", "File Download Goto Download page to view", "Ok", "Cancel");
}
if (target)
{
// Device.OpenUri(new Uri("Downloads"));
try
{
await PopupNavigation.Instance.PopAsync();
// here i want to redirect to downloads app ->
// Intent myIntent = new Intent(Android.App.DownloadManager.ActionDownloadComplete);
}
catch (Exception e)
{
//// TODO: handle exception
//String data = e.getMessage();
}
// Environment.GetFolderPath(Environment.SpecialFolder.)
//var x = file.DestinationPathName;
//Device.OpenUri(new Uri(x));
}
}
public Boolean IsDownloading(IDownloadFile file)
{
if (file == null) return false;
switch (file.Status)
{
case DownloadFileStatus.INITIALIZED:
case DownloadFileStatus.PAUSED:
case DownloadFileStatus.PENDING:
case DownloadFileStatus.RUNNING:
return true;
case DownloadFileStatus.COMPLETED:
case DownloadFileStatus.CANCELED:
case DownloadFileStatus.FAILED:
return false;
default:
return false;
}
}
public void AbortDownloading()
{
CrossDownloadManager.Current.Abort(File);
}
#endregion
}
}

Answer 1

My understanding of your question tells me you want to open the default downloads application that Android has and it can be done as follows:
Intent intent = new Intent(DownloadManager.ActionViewDownloads);
intent.AddFlags(ActivityFlags.NewTask);
Android.App.Application.Context.StartActivity(intent);

Answer 2

Yes this is what i expected, i accomplished with some changes in your code
Intent intent = new Intent(DownloadManager.ActionViewDownloads);
intent.AddFlags(ActivityFlags.NewTask);
Android.App.Application.Context.StartActivity(intent);