I'm upgrading some legacy to target Android Q, and of course this code stop working:
String[] PROJECTION_BUCKET = {MediaStore.Images.ImageColumns.BUCKET_ID,
MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME,
MediaStore.Images.ImageColumns.DATE_TAKEN,
MediaStore.Images.ImageColumns.DATA,
"COUNT(" + MediaStore.Images.ImageColumns._ID + ") AS COUNT",
MediaStore.Files.FileColumns.MEDIA_TYPE,
MediaStore.MediaColumns._ID};
String BUCKET_GROUP_BY = " 1) and " + BUCKET_WHERE.toString() + " GROUP BY 1,(2";
cur = context.getContentResolver().query(images, PROJECTION_BUCKET,
BUCKET_GROUP_BY, null, BUCKET_ORDER_BY);
android.database.sqlite.SQLiteException: near "GROUP": syntax error (code 1 SQLITE_ERROR[1])
Here it supposed to obtain list of images with album name, date, count of pictures - one image for each album, so we can create album picker screen without querying all pictures and loop through it to create albums.
Is it possible to group query results with contentResolver since SQL queries stoped work?
(I know that ImageColumns.DATA and "COUNT() AS COUNT" are deprecated too, but this is a question about GROUP BY)
(There is a way to query albums and separately query photo, to obtain photo uri for album cover, but i want to avoid overheads)
Unfortunately Group By is no longer supported in Android 10 and above, neither any aggregated functions such as COUNT. This is by design and there is no workaround.
The solution is what you are actually trying to avoid, which is to query, iterate, and get metrics.
To get you started you can use the next snipped, which will resolve the buckets (albums), and the amount of records in each one.
I haven't added code to resolve the thumbnails, but is easy. You must perform a query for each bucket Id from all the Album instances, and use the image from the first record.
public final class AlbumQuery
{
#NonNull
public static HashMap<String, AlbumQuery.Album> get(#NonNull final Context context)
{
final HashMap<String, AlbumQuery.Album> output = new HashMap<>();
final Uri contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
final String[] projection = {MediaStore.Images.Media.BUCKET_DISPLAY_NAME, MediaStore.Images.Media.BUCKET_ID};
try (final Cursor cursor = context.getContentResolver().query(contentUri, projection, null, null, null))
{
if ((cursor != null) && (cursor.moveToFirst() == true))
{
final int columnBucketName = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.BUCKET_DISPLAY_NAME);
final int columnBucketId = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.BUCKET_ID);
do
{
final String bucketId = cursor.getString(columnBucketId);
final String bucketName = cursor.getString(columnBucketName);
if (output.containsKey(bucketId) == false)
{
final int count = AlbumQuery.getCount(context, contentUri, bucketId);
final AlbumQuery.Album album = new AlbumQuery.Album(bucketId, bucketName, count);
output.put(bucketId, album);
}
} while (cursor.moveToNext());
}
}
return output;
}
private static int getCount(#NonNull final Context context, #NonNull final Uri contentUri, #NonNull final String bucketId)
{
try (final Cursor cursor = context.getContentResolver().query(contentUri,
null, MediaStore.Images.Media.BUCKET_ID + "=?", new String[]{bucketId}, null))
{
return ((cursor == null) || (cursor.moveToFirst() == false)) ? 0 : cursor.getCount();
}
}
public static final class Album
{
#NonNull
public final String buckedId;
#NonNull
public final String bucketName;
public final int count;
Album(#NonNull final String bucketId, #NonNull final String bucketName, final int count)
{
this.buckedId = bucketId;
this.bucketName = bucketName;
this.count = count;
}
}
}
This is a more efficient(not perfect) way to do that.
I am doing it for videos, but doing so is the same for images to. just change MediaStore.Video.Media.X to MediaStore.Images.Media.X
public class QUtils {
/*created by Nasib June 6, 2020*/
#RequiresApi(api = Build.VERSION_CODES.Q)
public static ArrayList<FolderHolder> loadListOfFolders(Context context) {
ArrayList<FolderHolder> allFolders = new ArrayList<>();//list that we need
HashMap<Long, String> folders = new HashMap<>(); //hashmap to track(no duplicates) folders by using their ids
String[] projection = {MediaStore.Video.Media._ID,
MediaStore.Video.Media.BUCKET_ID,
MediaStore.Video.Media.BUCKET_DISPLAY_NAME,
MediaStore.Video.Media.DATE_ADDED};
ContentResolver CR = context.getContentResolver();
Uri root = MediaStore.Video.Media.getContentUri(MediaStore.VOLUME_EXTERNAL);
Cursor c = CR.query(root, projection, null, null, MediaStore.Video.Media.DATE_ADDED + " desc");
if (c != null && c.moveToFirst()) {
int folderIdIndex = c.getColumnIndexOrThrow(MediaStore.Video.Media.BUCKET_ID);
int folderNameIndex = c.getColumnIndexOrThrow(MediaStore.Video.Media.BUCKET_DISPLAY_NAME);
int thumbIdIndex = c.getColumnIndexOrThrow(MediaStore.Video.Media._ID);
int dateAddedIndex = c.getColumnIndexOrThrow(MediaStore.Video.Media.DATE_ADDED);
do {
Long folderId = c.getLong(folderIdIndex);
if (folders.containsKey(folderId) == false) { //proceed only if the folder data has not been inserted already :)
long thumbId = c.getLong(thumbIdIndex);
String folderName = c.getString(folderNameIndex);
String dateAdded = c.getString(dateAddedIndex);
Uri thumbPath = ContentUris.withAppendedId(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, thumbId);
folders.put(folderId, folderName);
allFolders.add(new FolderHolder(String.valueOf(thumbPath), folderName, dateAdded));
}
} while (c.moveToNext());
c.close(); //close cursor
folders.clear(); //clear the hashmap becuase it's no more useful
}
return allFolders;
}
}
FolderHolder model class
public class FolderHolder {
private String folderName;
public long dateAdded;
private String thumbnailPath;
public long folderId;
public void setPath(String thumbnailPath) {
this.thumbnailPath = thumbnailPath;
}
public String getthumbnailPath() {
return thumbnailPath;
}
public FolderHolder(long folderId, String thumbnailPath, String folderName, long dateAdded) {
this.folderId = folderId;
this.folderName = folderName;
this.thumbnailPath = thumbnailPath;
this.dateAdded = dateAdded;
}
public String getFolderName() {
return folderName;
}
}
GROUP_BY supporting in case of using Bundle:
val bundle = Bundle().apply {
putString(
ContentResolver.QUERY_ARG_SQL_SORT_ORDER,
"${MediaStore.MediaColumns.DATE_MODIFIED} DESC"
)
putString(
ContentResolver.QUERY_ARG_SQL_GROUP_BY,
MediaStore.Images.ImageColumns.BUCKET_ID
)
}
contentResolver.query(
uri,
arrayOf(
MediaStore.Images.ImageColumns.BUCKET_ID,
MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME,
MediaStore.Images.ImageColumns.DATE_TAKEN,
MediaStore.Images.ImageColumns.DATA
),
bundle,
null
)
In a VSIX package I have to get the debugger command for active startup configuration. In other words, the command that would be executed when 'sturt under debugger' is selected. Using the code below I was able to get active configuration for startup project, but I can't figure out how to get the debugger command from IVSHierarchy representing the startup project. Is this even possible without going back to DTE?
private void GetStartupProject()
{
ThreadHelper.ThrowIfNotOnUIThread();
IVsSolutionBuildManager bm = Package.GetGlobalService(typeof(IVsSolutionBuildManager)) as IVsSolutionBuildManager;
int hr;
IVsHierarchy project;
hr = bm.get_StartupProject(out project);
if (hr == VSConstants.S_OK)
{
project.GetProperty((uint)VSConstants.VSITEMID.Root, (int)__VSHPROPID.VSHPROPID_Name, out object projectName);
IVsProjectCfg[] activeCfgs = new IVsProjectCfg[1];
bm.FindActiveProjectCfg(IntPtr.Zero, IntPtr.Zero, project, activeCfgs);
activeCfgs[0].get_DisplayName(out string activeCfgName);
textOut.Text += String.Format("{0} {1}\r\n",(string)projectName, activeCfgName);
}
}
The IVsProjectCfg interface doesn't allow for enumerating the various configuration properties, or contain a method that would allow you to retrieve them. As you probably already suspect, the various project types expose their settings via automation, which for C# and VB.NET projects would correlate to using EnvDTE/VSLangProj interfaces to retrieve the specific debugger properties for a given configuration. For C#/VB.NET projects you'll want to retrieve/use the ProjectConfigurationProperties3 interface. For example:
private void OnGetDebuggerSettings(object sender, EventArgs e)
{
ThreadHelper.ThrowIfNotOnUIThread();
IVsHierarchy vsHierarchy = null;
IVsSolutionBuildManager slnBuildMgr = (IVsSolutionBuildManager)GetService(typeof(SVsSolutionBuildManager));
int hresult = slnBuildMgr.get_StartupProject(out vsHierarchy);
object objProject = null;
hresult = vsHierarchy.GetProperty((uint)VSConstants.VSITEMID.Root, (int)__VSHPROPID.VSHPROPID_ExtObject, out objProject);
Project startupProject = (Project)objProject;
// Note, cannot enumerate the ProjectConfigurationProperties, as it's not a collection interface
// Refer to the documentation for ProjetConfigurationProperties3, or set a BP on the WriteLine below
// and view the Dynamic View of the cfgProperties in the debugger's locals or watch window.
Configuration cfg = startupProject.ConfigurationManager.ActiveConfiguration;
ProjectConfigurationProperties3 cfgProperties = cfg.Object as ProjectConfigurationProperties3;
if (cfgProperties!=null)
{
System.Diagnostics.Debug.WriteLine(cfgProperties.StartArguments);
}
}
Hopefully that'll get you up and running.
After spending some time debugging and with help from Ed Dore, I was able to put together code that gets complete debugging command and working dir for native C++ and managed code projects:
private void ListStartupProperties()
{
ThreadHelper.ThrowIfNotOnUIThread();
IVsHierarchy vsHierarchy = null;
int hresult = bm.get_StartupProject(out vsHierarchy);
object objProject = null;
if(vsHierarchy != null)
hresult = vsHierarchy.GetProperty((uint)VSConstants.VSITEMID.Root, (int)__VSHPROPID.VSHPROPID_ExtObject, out objProject);
Project startupProject = (Project)objProject;
if (startupProject != null)
{
foreach (Property prop in startupProject.Properties)
{
try
{
textOut.Text += string.Format("{0} = {1}\r\n", prop.Name, prop.Value);
}
catch (Exception e)
{
textOut.Text += e.Message + "\r\n";
}
}
string cmd = "";
string args = "";
string wd = "";
VCProject vcp = startupProject.Object as VCProject;
if (vcp != null)
{ // This is VC project
VCConfiguration vcc = vcp.ActiveConfiguration;
VCDebugSettings dbg = vcc.DebugSettings;
cmd = vcc.Evaluate(dbg.Command);
args = vcc.Evaluate(dbg.CommandArguments);
wd = vcc.Evaluate(dbg.WorkingDirectory);
}
else
{ // Probably C# or VB
Configuration cfg = startupProject.ConfigurationManager.ActiveConfiguration;
ProjectConfigurationProperties cfgProperties = cfg.Object as ProjectConfigurationProperties;
if (cfgProperties != null)
{
string outPath = cfgProperties.OutputPath;
string localPath = startupProject.Properties.Item("FullPath").Value as string;
string outputName = startupProject.Properties.Item("OutputFileName").Value as string;
cmd = cfgProperties.StartProgram != "" ?
cfgProperties.StartProgram :
localPath + outPath + outputName;
args = cfgProperties.StartArguments;
wd = cfgProperties.StartWorkingDirectory;
}
}
textOut.Text += string.Format("StartProgram = {0}\r\n", cmd);
textOut.Text += string.Format("StartArguments = {0}\r\n", args);
textOut.Text += string.Format("WorkingDir = {0}\r\n", wd);
}
}
I am trying to pull all the names of teams and place them in a simple list. I have tried so doing this
private void ParseAndDisplay(JsonValue json)
{
dynamic teamData = json["teams"];
//TextView name = FindViewById<TextView>(Resource.Id.txtName);
string[] teams;
foreach (var team in teamData)
{
var name = team["name"];
Console.Out.WriteLine("\r\n {0}", name);
teams = new string[] { name };
//TextView name = FindViewById<TextView>(Resource.Id.txtName);
//name.Text = team["name"];
ListAdapter = new ArrayAdapter<String>(this, Android.Resource.Layout.SimpleListItem1, teams);
}
However on my device it only displays the name of the last team in the data whereas in the output it shows all of them.
I do an example with signalR. But it doesn't function because of one mistake.
The one mistake (can not convert type system.threading.tasks.task< object> to string) is in this line:
return context.Clients.All.RecieveNotification(simple);
It is at the bottom of the code you can see below.
Below you see the method I wrote. There I do a connection with the database and get the content with a command/query.
Then a few checks and also SqlDependency.
public string SendNotifications()
{
using (var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString))
{
string query = "SELECT eintrag FROM [dbo].[simple_column]";
connection.Open();
using (SqlCommand command = new SqlCommand(query, connection))
{
command.Notification = null;
DataTable dt = new DataTable();
SqlDependency dependency = new SqlDependency(command);
dependency.OnChange += new OnChangeEventHandler(dependency_OnChange);
if (connection.State == ConnectionState.Closed)
connection.Open();
var reader = command.ExecuteReader();
dt.Load(reader);
if (dt.Rows.Count > 0)
{
simple = dt.Rows[0]["eintrag"].ToString();
}
}
}
IHubContext context = GlobalHost.ConnectionManager.GetHubContext<NotificationHub>();
return context.Clients.All.RecieveNotification(simple);
}
And here I use the function:
var notifications = $.connection.notificationHub;
notifications.client.recieveNotification = function (simple) {
// Add the message to the page.
$('#dbMessage').text(simple);
};
I hope you can help me.
Thanks.
Folks, I am new to writing testcases for the methods. Here I have a InsertMethod for which I want to write testcase using NUnit testing framework. Help me in writing the testcase for the method below :
public bool insertUser(String FirstName, String LastName)
{
bool result = false;
SqlConnection myconn = new SqlConnection();
SqlCommand mycmd = new SqlCommand();
try
{
myconn.ConnectionString = "Data Source=BABU-PC;Initial Catalog=contacts;Integrated Security=True";
myconn.Open();
mycmd.Connection = myconn;
mycmd.CommandText = "InsertUser";
mycmd.CommandType = CommandType.StoredProcedure;
SqlParameter param1 = new SqlParameter();
param1.ParameterName = "#FirstName";
param1.DbType = DbType.AnsiString;
param1.Size = 8000;
param1.Value = FirstName;
mycmd.Parameters.Add(param1);
SqlParameter param2 = new SqlParameter();
param2.ParameterName = "#LastName";
param2.DbType = DbType.AnsiString;
param2.Size = 8000;
param2.Value = LastName;
mycmd.Parameters.Add(param2);
int i = 0;
i = mycmd.ExecuteNonQuery();
if (i > 0)
{
result = true;
}
else
{
result = false;
}
}
catch (Exception err)
{
Console.WriteLine(err.Message.ToString());
return false;
}
finally
{
mycmd.Dispose();
myconn.Close();
myconn = null;
}
return result;
}
Thanks
SBM
Cellfish is right. Don't think about the code, think about what the method is supposed to do. Without even looking at your code, I'd do this kind of test:
1- Preparation
lastName = "LastName"
firstName = "FirstName"
Then try to fetch a user with firstName and lastName and make sure that it's not already there.
2- Execute
InsertUser(firstName, lastName)
3- Check
Make sure InsertUser return true
Try to fetch a user with firstName and lastName and make sure that it is there with the correct values.