This time I am going to share how I have used Platform Service to store UserName and Password with Xamarin.forms. It will be quite a simple implementation as we will using Xamarin.Auth package.
First create a new Xamarin.forms application using pcl. I always prefer using pcl in my projects :).
In you pcl create a new interface as shown below:
First create a new Xamarin.forms application using pcl. I always prefer using pcl in my projects :).
In you pcl create a new interface as shown below:
public interface ILoginStoreService
{
void SaveLogin (string userName, string password);
string GetUserName ();
string GetPassword ();
bool LoginExists ();
}
Then in your iOS project add Xamarin.Auth package. After that inside the same iOS project create a new Class inheriting the interface defined in the pcl project.
[assembly: Dependency(typeof(LoginStoreIOS))]
namespace HealthGateway.iOS
{
public class LoginStoreIOS
:ILoginStoreService
{
public void SaveLogin (string userName, string password)
{
if (!string.IsNullOrEmpty (userName) && !string.IsNullOrEmpty (password))
{
Account user = new Account { Username = userName };
user.Properties.Add ("Key", password);
AccountStore.Create ().Save (user, "Shribits");
}
}
public string GetPassword ()
{
var account = AccountStore.Create ().FindAccountsForService ("Shribits").Last();
return account.Properties["Key"];
}
public bool LoginExists ()
{
if(AccountStore.Create ().FindAccountsForService ("Shribits").Count() > 0)
return true;
else
return false;
}
public string GetUserName ()
{
var account = AccountStore.Create ().FindAccountsForService ("Shribits").Last();
return account.Username;
}
}
}
namespace HealthGateway.iOS
{
public class LoginStoreIOS
:ILoginStoreService
{
public void SaveLogin (string userName, string password)
{
if (!string.IsNullOrEmpty (userName) && !string.IsNullOrEmpty (password))
{
Account user = new Account { Username = userName };
user.Properties.Add ("Key", password);
AccountStore.Create ().Save (user, "Shribits");
}
}
public string GetPassword ()
{
var account = AccountStore.Create ().FindAccountsForService ("Shribits").Last();
return account.Properties["Key"];
}
public bool LoginExists ()
{
if(AccountStore.Create ().FindAccountsForService ("Shribits").Count() > 0)
return true;
else
return false;
}
public string GetUserName ()
{
var account = AccountStore.Create ().FindAccountsForService ("Shribits").Last();
return account.Username;
}
}
}
Similarly for android follow the same steps create a new Class inheriting the interface defined in your pcl and also add the Xamarin.Auth package to your solution.
The example of implementation is below:
[assembly: Dependency(typeof(LoginStoreDroid))]
namespace HealthGateway.Droid
{
public class LoginStoreDroid
:ILoginStoreService
{
public void SaveLogin (string userName, string password)
{
if (!string.IsNullOrEmpty (userName) && !string.IsNullOrEmpty (password)) {
Account user = new Account { Username = userName };
user.Properties.Add ("Key", password);
AccountStore.Create (MainActivity.Instance.BaseContext).Save (user, "Shribits");
}
}
public string GetPassword ()
{
var account = AccountStore.Create (MainActivity.Instance.BaseContext).FindAccountsForService ("Gateway").Last();
return account.Properties["Key"];
}
public bool LoginExists ()
{
if(AccountStore.Create (MainActivity.Instance.BaseContext).FindAccountsForService ("Shribits").Count()>0)
return true;
else
return false;
}
public string GetUserName ()
{
var account = AccountStore.Create (MainActivity.Instance.BaseContext).FindAccountsForService ("Gateway").Last();
return account.Username;
}
}
}
Now you are good to go ahead with your implementation cross platform level. Below is the example of how to make the call :
DependencyService.Get<ILoginStoreService> ().LoginExists ()
For more information on how to implement Dependency Service please https://developer.xamarin.com/guides/cross-platform/xamarin-forms/dependency-service/
Add in your comments and questions. Also let me know if you would like to cover any topic.
