Unable to access Redmi Note 5 Pro from Ubuntu 18.10

See also questions close to this topic

• How to access bridge of eth0 & wlan0 in rapberry pi with hostname through android phone?

  My raspberry pi is connected to my home router through LAN cable, raspberry pi has created it's hotspot. I have installed MQTT server on raspberry pi. I have created a bridge between eth0 & wla0 in raspberry pi so that the devices connected to home router through wifi can publish message on raspberry pi server and they should be received by devices which are connected to raspberry pi through its WiFi. But bridge is getting IP address from DHCP which changes dynamically. So to publish message, everytime i have to change the IP address. Is there any way we can access the bridge without changing IP address everytime ? This is an image of The architecture to visualize the problem
• video cannot play after upload from retrofit to wcf

  I want to upload a video by retrofit to WCF Service. I can upload video as well and I can save this video in a specific path on the server. But, unfortunately, this video cannot play after storing on the server by any media player. I try these codes both of "WCF" and "Android Java" like below:

  In Android:

  @Multipart
      @POST("MYSERVER/UploadVideo/")
      @Headers({
              "Content-Type: multipart/form-data",
              "Accept: application/json;charset=utf-8"
      })
      Call<Verify> uploadVideo(
              @Part MultipartBody.Part images
  
      );
  
   RequestBody requestFile =
  RequestBody.create(MediaType.parse("multipart/form-data"), file);
  
  fileBody =
    MultipartBody.Part.createFormData("videoData", file.getName(), requestFile);
  
  Call<Verify> call = service.uploadVideo(fileBody);
  

  In WCF Service:

  [OperationContract]
          [WebInvoke(Method = "POST", UriTemplate = "/UploadVideo/",
  RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
          VerifyModel UploadVideo(Stream video);
  
  
  
  
   string apPath = System.Web.Hosting.HostingEnvironment.ApplicationPhysicalPath + "Uploads\\Videos\\" + videoname;
  
  
  
  using (FileStream fs = new FileStream(apPath, FileMode.CreateNew, FileAccess.Write))
  {
     CopyStream(video, fs);
   }
  
  public static void CopyStream(Stream input, Stream output)
          {
              byte[] buffer = new byte[8 * 1024];
              int len;
              while ((len = input.Read(buffer, 0, buffer.Length)) > 0)
              {
                  output.Write(buffer, 0, len);
              }
          }
  

  as I told you, I can save the video with the correct size and mp4 format. but the video cannot play with any media player

  
• How to find the Position of String array item if I am showing value in dialog?

  String [] strinArray={"A","B,"c","D"};
  AlertDialog.Builder builder = new AlertDialog.Builder(activity);
  
          @Override
  
          public void onClick(final DialogInterface dialog, final int item) {
  
            String value = stringArray[item];
  
  
         }
  

  ---

  String [] strinArray={"A","B,"c","D"};
  AlertDialog.Builder builder = new AlertDialog.Builder(activity);
  
          @Override
  
          public void onClick(final DialogInterface dialog, final int item) {
  
            String value = stringArray[item];
  
  
         }
  

  I want to get Position of item what I have selected ?
• when installing opencv -----CMake Error at cmake/OpenCVFindIPP.cmake:242 (include): include could not find load file:

  CMake Error at cmake/OpenCVFindIPP.cmake:242 (include):
    include could not find load file:
  
      /home/xingzi/opencv-3.3.0/3rdparty/ippicv/ippicv.cmake
  Call Stack (most recent call first):
    cmake/OpenCVFindLibsPerf.cmake:12 (include)
    CMakeLists.txt:606 (include)
  
  CMake Error at cmake/OpenCVFindIPP.cmake:243 (download_ippicv):
    Unknown CMake command "download_ippicv".
  Call Stack (most recent call first):
    cmake/OpenCVFindLibsPerf.cmake:12 (include)
    CMakeLists.txt:606 (include)
  

  I've tried to modify the fixed address of OpenCVFindIPP.cmake,it doesn't work.
• Change version from php 7.0 to 7.1 not working

  I have recently change my php version 7.0 to 7.1

  I tried

   sudo apt-add-repository ppa:ondrej/php
  sudo apt install php7.1
  sudo a2dismod php7.0
  sudo a2enmod php7.1
  sudo apt-get install php7.1-xml
  

  Then when i hit localhost/projectname nothing will displays.. and when u hit http://localhost/phpmyadmin/ got

  phpMyAdmin - Error The mbstring extension is missing. Please check your PHP configuration.

  then i tried

  sudo apt-get install php-mbstring
  

  Nothing change. finally

  sudo service apache2 restart 
  

  No change..even i didn't get my project which is worked before.

  please help me
• failed to open stream: FTP server reports 550 Could not get file size

  failed to open stream: FTP server reports 550 Could not get file size. Function: file()

  Line: 145

  FTP INFO / Login details are Correct php_fileinfo extension is Enabled

  $folder = 'cache_folder/panel_'.$server["username"].'_samp_server.cfg';
  $fajl = "ftp://$server[username]:$server[password]@$boxip[ip]:$boxip[ftpport]/server.cfg";
  $lines = file($fajl, FILE_IGNORE_NEW_LINES); // - Line 145 (Errored line)
  
  $bind = false;
  $port = false;
  $maxplayers = false;
  

  Any help is welcome, thanks to all in advance.
• Running Espresso tests with ADB without opening/closing app?

  I'd like to install and start an Android app with:

  adb install path_to_apk
  adb shell am start -a mainActivityAPP
  

  and then run Espresso tests with:

  adb shell am instrument -w <test_package_name>/<runner_class>
  

  How do I prevent ActivityScenarioRule from launching a given activity before tests start and closing after tests?
• How to get number of connected android devices by using "adb devices"

  I'm trying to obtain the number of connected android devices to my slave machine before executing jenkins job

  How I can get the size of the list attached devices ?

  I'm working in bash env
• Is there any adb command to disable android's display?

  Hi im looking for method to disable my android phones display running on pie. I don't want to use tap to sleep, power button or simulate that option but I want to simply disable display completely and then turn it back on when I need it. I have rooted my phone already.

  Example: I want to watch a YouTube video with only audio. So if I disable the display it can save my battery but pressing power button stops the buffering.

  it's just an example for what I want to do this. I don't want it. I'm aware of youtube vanced..

  PS: I have non amoled display.

  I'm thinking for the following methods (though I'm not an expert):

  1. Make brightness zero.
  2. Change display driver's file name with adb to disable or enable display.
  3. Take code of android where it simply disables the display after pressing power key (without performing other functions).

  I expect the display to be turned off exactly like when pressing power button, but without other tasks that happens with power button.
• Why does MtpDevice.ImportFile always fail?

  I am modifying an existing application, written in C# in Xamarin, built exclusively for Android.

  The existing app searches for files on a wifi card in a camera, and downloads them via an HTTP interface. I'm trying to get it to download the files using tethered with a USB cable instead, but can't get the files to download.

  I'm using MtpDevice to try and download, the but the ImportFile function always fails. Unfortunately, it never throws an exception or gives any sort of useful information as to why.

  The code below shows pretty much what I'm doing, although I have removed a bunch of stuff that is not relevant to the problem.

  As I am modifying an existing application, the code is a little convoluted, as there is one method to find the files, then a background thread calls into another method to do the actual download, so the user can continue working while the files are downloaded.

  Also, some of the code I have shown in GetFileListAsync is actually in other methods as they are used multiple times... I have not included the permissions stuff, as that all appears to be working fine.

  This is the method that gets called first, to find a list of object handles.

  public async Task<List<MyFileClass>> GetFileListAsync()
  {
      var results = new List<MyFileClass>();
      UsbDeviceConnection usbDeviceConnection = null;
      MtpDevice mtpDevice = null;
      UsbDevice usbDevice = null;
  
      // all this stuff works as expected...
  
      UsbManager usbManager = (UsbManager)Android.App.Application.Context.GetSystemService(Context.UsbService);
  
      try
      {
          if (usbManager.DeviceList != null && usbManager.DeviceList.Count > 0)
          {
              foreach (var usbAccessory in usbManager.DeviceList)
              {
                  var device = usbAccessory.Value;
                  usbDevice = usbAccessory.Value;
                  break;  // should only ever be one, but break here anyway
              }
          }
      }
      catch (Exception ex)
      {
          Log.Error(ex, "Error getting USB devices");
      }
  
      if (usbDevice == null)
      {
          Log.Information("ConnectedDevice is null");
          return false;
      }
  
      if (!UsbManager.HasPermission(usbDevice))
      {
          Log.Information("Requesting permission must have failed");
          return false;
      }
  
      try
      {
          usbDeviceConnection = UsbManager.OpenDevice(usbDevice);
      }
      catch (Exception ex)
      {
          Log.Error(ex, "opening usb connection");
          return false;
      }
  
      try
      {
          mtpDevice = new MtpDevice(usbDevice);
      }
      catch (Exception ex)
      {
          Log.Error(ex, "creating mtpdevice");
          return false;
      }
  
      try
      {
          mtpDevice.Open(usbDeviceConnection);
      }
      catch (Exception ex)
      {
          Log.Error(ex, " opening mtpdevice");
          usbDeviceConnection.Close();
          return false;
      }
  
      // then start looking for files
  
      var storageUnits = mtpDevice.GetStorageIds();
      if (storageUnits == null || storageUnits.Length == 0)
      {
          Log.Information("StorageUnits is empty");
          mtpDevice.Close();
          usbDeviceConnection.Close();
          return false;
      }
  
      foreach (var storageUnitId in storageUnits)
      {
          var storageUnit = mtpDevice.GetStorageInfo(storageUnitId);
          if (storageUnit != null)
          {
              // recurse directories to get list of files
              await RecurseMTPDirectories(results, storageUnitId, docketId, docket, db);
          }
      }
  }
  
  private async Task RecurseMTPDirectories(List<MyFileClass> files, int storageUnitId, string parentFolder = "\\", int parentHandle = -1)
  {
      var results = new List<FlashAirFile>();
      var directoryObjects = new List<MtpObjectInfo>();
      var objectHandles = mtpDevice.GetObjectHandles(storageUnitId, 0, parentHandle);
  
      if (objectHandles != null && objectHandles.Length > 0)
      {
          foreach (var objectHandle in objectHandles)
          {
              MtpObjectInfo objectInfo = mtpDevice.GetObjectInfo(objectHandle);
              if (objectInfo != null)
              {
                  if (objectInfo.Format == MtpFormat.Association)
                  {
                      // add to the list to recurse into, but do this at the end
                      directoryObjects.Add(objectInfo);
                  }
                  else
                  {
                      // it' a file - add it only if it's one we want
                      try
                      {
                          var file = new MyFileClass()
                          {
                              TotalBytes = objectInfo.CompressedSize,
                              FileNameOnCard = objectInfo.Name,
                              DirectoryOnCard = parentFolder,
                              MTPHandle = objectHandle
                          };
                      }
                      catch (Exception e)
                      {
                          Log.Error(e, " trying to create MTP FlashAirFile");
                      }
                  }
              }
          }
      }
  
      foreach (var directoryObject in directoryObjects)
      {
          string fullname = parentFolder + directoryObject.Name;
          await RecurseMTPDirectories(files, storageUnitId, $"{fullname}\\", directoryObject.ObjectHandle);
      }
      return results;
  }
  

  I know it's possible to get all the handles at once rather than recursing through folders, but for now I'm doing it as the old code did that.

  The list of MyFileClass objects are added to a SQLite database, then the background thread de-queues them one at a time and calls DownloadFileAsync to get each file. This method uses the same device as used in the GetFileListAsync method, and it also checks the permission is still available.

  public async Task<int> DownloadFileAsync(MyFileClass file, string destination)
  {
      int receivedBytes = 0;
      int objectHandle = file.MTPHandle;
  
      connectedDevice = await GetAttachedDevice();
      if (connectedDevice == null || !UsbManager.HasPermission(connectedDevice))
          return receivedBytes;
  
      if (!await OpenAttachedDevice())
          return receivedBytes;
  
      var rootFolder = await FileSystem.Current.GetFolderFromPathAsync(destination);
      var localFile = rootFolder.Path;
  
      try
      {
      Log.Information($"Attempting to download ID {objectHandle} to {localFile}");
  
          // try downloading just using path
          bool success = mtpDevice.ImportFile(objectHandle, localFile);
          if (!success)
          {
              // try it with a / on the end of the path
              localFile += '/';
              Log.Information($"Attempting to download ID {file.DownloadManagerId} to {localFile}");
              success = mtpDevice.ImportFile(objectHandle, localFile);
          }
          if (!success)
          {
              // try it with the filename on the end of the path as well
              localFile += file.FileNameOnSdCard;
              Log.Information($"Attempting to download ID {file.DownloadManagerId} to {localFile}");
              success = mtpDevice.ImportFile(objectHandle, localFile);
          }
  
  
          if (!success)
          {
              throw new Exception($"mtpDevice.ImportFile failed for {file.FileNameOnSdCard}");
          }
  
          // do stuff here to handle success
      }
      catch (Exception ex) when (ex is OperationCanceledException || ex is TaskCanceledException)
      {
          // do some other stuff here in the database
  
          //rethrow the exception so it can be handled further up the chain.
          throw;
      }
  
      return receivedBytes;
  }
  

  I can't find a single example showing this working. I've seen one post on here that says the file has to be imported to the external cache folder, and one that says the second parameter should include the filename, but neither of those work.

  I've been pulling out my hair over this - help!!
• How to create folder in MTP device by c# windows application?

  I'm trying to transfer files to android MTP device in windows app made with C#. How do i create folder on MTP device in windows app?

  I'm using WPD API and I succeeded in sending the file to the MTP device.

  var WPD_OBJECT_PARENT_ID = new _tagpropertykey();
              WPD_OBJECT_PARENT_ID.fmtid = new Guid(0xEF6B490D, 0x5CD8, 0x437A, 0xAF, 0xFC, 0xDA, 0x8B, 0x60, 0xEE, 0x4A, 0x3C);
              WPD_OBJECT_PARENT_ID.pid = 3 ;
  

  I read above code in PortableDevices API. I don'n now what guid means.

  I thought api would support the function to create folders. But, However, api support only reading, writing and deleting files.

  How do i create folrder on MTP device? Or, is there any good C# api for mtp device?
• How to reach file path of phone's files through MTP in VBA (photos ..)

  After a long google search still could not find any solution. Basically, i have an Access Form and want to get file path of a photo in phone's folder but as you know is not mounted and i cannot get any file path of any file in the phone. and if you ask about what i ll do which i wanna copy after i get the file path from phone to desktop. so any idea ? any suggestion ? i read a lot also that is not possible but stil wanna try my chance one more time here. thanks a lot in advance :)
• How to set MIUI battery saver to "no restriction" programmatically?

  I want android code supported in "redmi" for to open Battery saver activity for my own app and give no restriction for that app in battery saver.
• How to redirect to App Settings Activity screen (under settings->installed apps->app_name).on redmi device

  I want to redirect user to a specific app's setting activity(under settings->installed apps->app_name).But I am not able to do so.

  I've tried using a few intents which are -

      //#1
      Intent batterySaverIntent = new Intent();
      batterySaverIntent.setComponent(new ComponentName("com.android.settings", "com.android.settings.Settings$BatterySaverSettingsActivity"));
      startActivityForResult(batterySaverIntent, 0);
  
      //#2
      Intent intent = new Intent();
      intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
      startActivity(intent);
  

  I expect it should redirect to app settings under settings->installed apps->app_name but it takes me to Battery Saver activity of the phone(if used method #1).
• Why an Android App keeps stopping in Xiomi Phones?

  I develop an app through WebView. The app is working fine in all devices except Xiomi devices. Whenever I open the app in Xiaomi Device it crashes and gives error "App-name Keeps Stopping". Where is the problem?