I'm using shared_preference version 2.0.6,
as per the documentation shared_preference version 0.5.6 by default supports web. as show in code 1st log works fine but the 2nd log not happening and in future builder showing
NoSuchMethodError: Unexpected Null Value
method not found
Receiver: null
Arguments: []
SharedPreferences prefs = await SharedPreferences.getInstance();
print("checking logged in user");//1st log
String loginedInUser = prefs.getString("user");
print("logged in user" + loginedInUser);//2nd log
Ok, I found what was the problem, consider below code:
SharedPreferences prefs = await SharedPreferences.getInstance();
String loginedInUser = prefs.getString("user"); //2nd line
While using shared_preferences for Flutter web, getter key(user) can't be null means that if stored value of user is null 2nd line will not return null instead it shows an error, if the user has some data then returns that value.
While using SharedPreferences for Flutter in Android 2nd line returns null without any errors.
Related
I am querying Azure DocumentDb (cosmos) for a document that is present in the container:
try{
doc = await client.ReadDocumentAsync(
GetDocumentUri("tenantString-campaignId"),
new RequestOptions
{
PartitionKey = new PartitionKey(tenantString)
});
}
catch(Exception e)
{
Console.WriteLine(e);
}
for this document:
tenantString-campaignId is the id you can see here and tenantString alone is the partition key this is under. The tenant itself was passed in as a string and I had that working but now I have changed to passing a Tenant object and parsing the string required from it I am not returning the document.
I have tried a few different variations of tenantString and id and I can generate either a DocumentClientException, Id does not exist, Exception or it fails silently; no exception and returns to the calling method where it causes a NullReferenceException as no document is returned.
As far as I can make out from debugging through this I am constructing all my data correctly and yet no document is returned. Does anyone have any idea what I can try next?
This syntax for the .NET SDK v2 is not correct. ReadDocumentAsync() should look like this.
var response = await client.ReadDocumentAsync(
UriFactory.CreateDocumentUri(databaseName, collectionName, "SalesOrder1"),
new RequestOptions { PartitionKey = new PartitionKey("Account1") });
You can see more v2 samples here
To access a unique identifier for Bixby, I'm trying to access the contactId field within the contact library (which is also viv.self I think?). I tried using the code snippet found in the docs here, but I'm getting some errors.
Code Snippet (Source)
text (Name) {
extends (contact.StructuredName)
}
Errors
ERROR: invalid capsule alias contact
ERROR: unknown super-type: contact.contactId
I would ultimately like to do something like this
integer (Identifier) {
extends (contact.ContactId)
}
Would appreciate any help on accessing this data!
I ended up finding another way to get a device identifier from these docs. There's also a sample capsule here.
In your corresponding JavaScript file, access the $vivContext.locale parameter to return the locale information.
module.exports.function = function accessVivContext (dummyInput, $vivContext) {
var result = "Testing Access vivContext..."
// See docs for all the properties of $vivContext
result = $vivContext.userId
return result
}
You would then need to configure your endpoints for this action like below, including making sure that you set up the proper accepted-inputs for your endpoint:
action-endpoint (AccessVivContext) {
accepted-inputs (dummyInput, $vivContext)
local-endpoint ("AccessVivContext.js")
}
I got this error during execute, could anyone give suggestion? Thanks
OrganizationRequest oreq = new OrganizationRequest();
oreq.RequestName = "RetrieveAllEntities";// please google for available Request Names
oreq.Parameters = new ParameterCollection();
oreq.Parameters.Add(new KeyValuePair<string, object>("EntityFilters", EntityFilters.Entity));
oreq.Parameters.Add(new KeyValuePair<string, object>("RetrieveAsIfPublished", false));
OrganizationResponse respo = orgProxy.Execute(oreq);
"The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter schemas.microsoft.com/xrm/2011/Contracts/Services:ExecuteResult. The InnerException message was 'Error in line 1 position 727. Element 'schemas.datacontract.org/2004/07/System.Collections.Generic:value' contains data of the 'schemas.microsoft.com/xrm/2011/Metadata:ArrayOfEntityMetadata' data contract. The deserializer has no knowledge of any type that maps to this contract. Add the type corresponding to 'ArrayOfEntityMetadata' to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer.'. Please see InnerException for more details."
Add a reference to Microsoft.Crm.Sdk.Proxy and Microsoft.Xrm.Sdk. Visual Studio may tell you that you need to add an additional couple System.* references - add them.
Use this code:
IOrganizationService service = GetCrmService(connectionString); //This is a helper, just need to setup the service
var request = new Microsoft.Xrm.Sdk.Messages.RetrieveAllEntitiesRequest()
{
EntityFilters = Microsoft.Xrm.Sdk.Metadata.EntityFilters.All,
RetrieveAsIfPublished = false
};
var response = (Microsoft.Xrm.Sdk.Messages.RetrieveAllEntitiesResponse)service.Execute(request);
Get it work finally there is two KnownTypeAttribute need to be added to the proxy class
**[System.Runtime.Serialization.KnownTypeAttribute(typeof(EntityMetadata[]))]**
public partial class OrganizationRequest : object, System.Runtime.Serialization.IExtensibleDataObject
....
**[System.Runtime.Serialization.KnownTypeAttribute(typeof(EntityMetadata[]))]**
public partial class OrganizationResponse : object, System.Runtime.Serialization.IExtensibleDataObject
Thank you for help.
I set multiple properties on the PasswordValidator, but the only rule that is checked is password length.
public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options, IOwinContext context)
{
var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(context.Get<ApplicationDbContext>()));
// Configure validation logic for passwords
manager.PasswordValidator = new PasswordValidator()
{
RequiredLength = int.Parse(ConfigurationManager.AppSettings["PasswordRequiredLength"]),
RequireNonLetterOrDigit = bool.Parse(ConfigurationManager.AppSettings["PasswordRequireNonLetterOrDigit"]),
RequireDigit = bool.Parse(ConfigurationManager.AppSettings["PasswordRequireDigit"]),
RequireLowercase = bool.Parse(ConfigurationManager.AppSettings["PasswordRequireLowercase"]),
RequireUppercase = bool.Parse(ConfigurationManager.AppSettings["PasswordRequireUppercase"])
};
This is pretty much copied from the ASP.NET Identity sample app except the values are from config instead of hard-coded.
When I view the definition of PasswordValidator() I see that these properties are all defined (and it compiles and runs of course). However, I notice when I test changing a password that only the length causes validation error. The AccountController had this code from the sample:
IdentityResult result = await UserManager.ChangePasswordAsync(User.Identity.GetUserId(), model.OldPassword, model.NewPassword);
To get a better look I added
IdentityResult resultPassword = await UserManager.PasswordValidator.ValidateAsync(model.NewPassword);
if (resultPassword.Succeeded)
{
IdentityResult result = await UserManager.ChangePasswordAsync(User.Identity.GetUserId(), model.OldPassword, model.NewPassword);
and I notice that userManager.PasswordValidator is of class MinimumLengthValidator, not the PasswordValidator I thought we started with. Of course, this explains the behavior, but I am at a loss to determine how to
Correctly add the "full" PassordValidator to my userManager and/or
Access the properties of the PassordValidator (such as RequireDigit, RequireUppercase, etc.)
Note, I have attempted
PasswordValidator myPV = (PasswordValidator)UserManager.PasswordValidator;
which results in a Unable to cast object of type 'Microsoft.AspNet.Identity.MinimumLengthValidator' to type 'Microsoft.AspNet.Identity.PasswordValidator' error.
Best,
Scott
I am having difficulty in obtaining a collection of playlists for the iPhone with Xamarin.iOS. I want to populate a list of my custom objects with the playlist descriptions. I found a page in Apple documentation on how to do it in Obj-C. However, whatever I do in Xamarin I either get invalid cast exceptions or some other error.
Getting the playlists into a collection is OK. However, it is getting the name of the playlist after that where the problem lies.
private List<Playlist> GetPlaylists()
{
MPMediaQuery mq = MPMediaQuery.playlistsQuery;
// At this point mq.Collections has a reference to the playlists. However I have no way of getting the Name/Description of the playlist.
// Thats why I was attempting to use MPMediaPlaylist
// MPMediaPlaylist[] mp1 = mq.Collections as MPMediaPlaylist[]; - doesn't work - results in mp1 being null
List<Playlist> playlists = (from p in mq.Collections
select new Playlist () { PlaylistDescription = ((MPMediaPlaylist)p).ValueForProperty("MPMediaPlaylistPropertyName").ToString()}
).ToList();
return playlists;
}
Another variation I had was as follows (but again received an invalid cast exception in the iteration of the forearch i.e. MediaPlaylist in mp1):
MPMediaQuery mq = MPMediaQuery.playlistsQuery;
Array mp1 = mq.Collections as Array;
List<Playlist> playlists = new List<Playlist> ();
foreach (MPMediaPlaylist playlist in mp1) {
playlists.Add (new Playlist () { PlaylistDescription = playlist.ValueForProperty ("MPMediaPlaylistPropertyName").ToString() });
}
As I have commented i the code, I can get a handle on the playlists through the collections property on the query. However, I cannot get the Name/Title/Description of the playlist. That is why I was attempting to use the MPMediaPlaylist casting.
In the immediate window and watch window I tried to cast (MPMediaPlaylist)mq.collections[0] but again got an invalid cast exception.
I came across the following documentation in apple documentation for Obj-C but I have been unsuccessful in reproducing it as you can see above. I'd be very grateful if someone could cast an eye over what I have above and also this Objective-C link and advise.
Many thanks,
Tomás
I am just going to put this here.... if someone runs in to this problem in the future!
So to get list of playlists you should do the following:
MPMediaQuery playlistQuery = MPMediaQuery.PlaylistsQuery;
MPMediaItemCollection[] playlistCollection = playlistQuery.Collections;
foreach(MPMediaItemCollection collection in playlistCollection){
NSString key = MPMediaPlaylistProperty.Name;
string name = collection.ValueForKey(key).ToString();
//Do whatever you need with the info
}