We are developing android widget for Xamarin.Forms application. The widget updates and gets data from the Web Service when the app is in Background, but stops working when the app is killed/closed. I have followed this article for developing this widget -
Xamarin: Android Widget with timer, stops when app killed
I want to Update the widget when the user clicks on Refresh button. If I add hardcoded data for textboxes and click Refresh it updates the time but doesn’t work if I assign web service result data for the textboxes. I have added internet permission in AndroidManifest.xml. Is there a way I can get the data from web service even when the app is closed? Or Probably I am missing some permission?
AppWidget.cs -
public static class WidgetConsts
{
public const string DebugTag = "com.myapp.WIDGET";
public const string ActionWakeup = "com.myapp.WIDGET_WAKEUP";
public const string ActionWidgetUpdate = "android.appwidget.action.APPWIDGET_UPDATE";
public const string ActionWidgetDisabled = "android.appwidget.action.APPWIDGET_DISABLED";
}
[BroadcastReceiver]
[IntentFilter(new string[] { WidgetConsts.ActionWakeup })]
public class AlarmReceiver : BroadcastReceiver
{
public override void OnReceive(Context context, Intent intent)
{
if (intent.Action.Equals(WidgetConsts.ActionWakeup))
{
Log.Debug(WidgetConsts.DebugTag, "Wakeup alarm called");
if (AppWidget.widgetTimer == null)
{
Log.Debug(WidgetConsts.DebugTag, "Widget updating does not run, enforcing update...");
AppWidget.UpdateAppWidget(context);
}
else
{
Log.Debug(WidgetConsts.DebugTag, "Widget updating runs, no action needed");
}
}
}
}
[BroadcastReceiver]
[IntentFilter(new string[] { WidgetConsts.ActionWidgetUpdate})]
[MetaData("android.appwidget.provider", Resource = "#xml/appwidget_provider")]
public class AppWidget : AppWidgetProvider
{
public static System.Timers.Timer widgetTimer = null;
public override void OnUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)
{
RemoteViews views = BuildRemoteViews(context, appWidgetIds);
(AppWidgetManager.GetInstance(Android.App.Application.Context)).UpdateAppWidget(new ComponentName(Android.App.Application.Context, Java.Lang.Class.FromType(typeof(AppWidget))), views);
// appWidgetManager.UpdateAppWidget(appWidgetIds[0], views);
// set timer for updating the widget views each 5 sec
if (widgetTimer == null)
{
widgetTimer = new System.Timers.Timer();
widgetTimer.Interval = 5000;
widgetTimer.Elapsed += OnTimedEvent;
}
widgetTimer.Enabled = true;
// set alarm to wake up the app when killed, each 60 sec
// needs a fresh BroadcastReceiver because AppWidgetProvider.OnReceive is
// not virtual and overriden method in this class would not be called
AlarmManager am = (AlarmManager)context.GetSystemService(Context.AlarmService);
Intent ai = new Intent(context, typeof(AlarmReceiver));
ai.SetAction(WidgetConsts.ActionWakeup);
PendingIntent pi = PendingIntent.GetBroadcast(context, 0, ai, PendingIntentFlags.UpdateCurrent);
am.SetRepeating(AlarmType.ElapsedRealtime, 100, 1000 * 60, pi);
}
public override void OnEnabled(Context context)
{
AlarmManager am = (AlarmManager)context.GetSystemService(Context.AlarmService);
Intent ai = new Intent(context, typeof(AlarmReceiver));
ai.SetAction(WidgetConsts.ActionWakeup);
PendingIntent pi = PendingIntent.GetBroadcast(context, 0, ai, PendingIntentFlags.UpdateCurrent);
am.SetRepeating(AlarmType.ElapsedRealtime, 100, 1000 * 60, pi);
base.OnEnabled(context);
}
public override void OnDisabled(Context context)
{
Log.Debug(WidgetConsts.DebugTag, "Disabling the widget");
if (widgetTimer != null)
{
Log.Debug(WidgetConsts.DebugTag, "Stopping timer");
widgetTimer.Enabled = false;
}
else
Log.Debug(WidgetConsts.DebugTag, "Timer is null");
base.OnDisabled(context);
}
private void OnTimedEvent(object sender, ElapsedEventArgs e)
{
Log.Debug(WidgetConsts.DebugTag, "Updating status...");
new Handler(Looper.MainLooper).Post(() =>
{
//Run my code to periodically update the widget
RemoteViews views = new RemoteViews(Android.App.Application.Context.PackageName, Resource.Layout.SnapVertWidget);
AppWidgetManager manager = AppWidgetManager.GetInstance(Android.App.Application.Context);
ComponentName thisWidget = new ComponentName(Android.App.Application.Context, Java.Lang.Class.FromType(typeof(AppWidget)));
int[] appWidgetIds = manager.GetAppWidgetIds(thisWidget);
(AppWidgetManager.GetInstance(Android.App.Application.Context)).UpdateAppWidget(new ComponentName(Android.App.Application.Context, Java.Lang.Class.FromType(typeof(AppWidget))), views);
// manager.UpdateAppWidget(appWidgetIds[0], views);
});
}
static public void UpdateAppWidget(Context context)
{
Intent intent = new Intent(context, typeof(AppWidget));
intent.SetAction(WidgetConsts.ActionWidgetUpdate);
int[] ids = AppWidgetManager.GetInstance(context).GetAppWidgetIds(new ComponentName(context, Java.Lang.Class.FromType(typeof(AppWidget))));
intent.PutExtra(AppWidgetManager.ExtraAppwidgetIds, ids);
context.SendBroadcast(intent);
}
public RemoteViews BuildRemoteViews(Context context, int[] appWidgetIds)
{
xxx.Droid.Services.MyWidget myWidget = new xxx.Droid.Services.MyWidget();
var entry = myWidget.GetData();
// Build an update that holds the updated widget contents
var updateViews = new RemoteViews(context.PackageName, Resource.Layout.SnapVertWidget);
updateViews.SetTextViewText(Resource.Id.txtvwUpdate, Convert.ToString(DateTime.Now));
updateViews.SetTextViewText(Resource.Id.txtvwCityName, entry.Result.CityName);
updateViews.SetTextViewText(Resource.Id.txtvwTemp, entry.Result.TempValue);
//SetTextViewText(widgetView);
RegisterClicks(context, appWidgetIds, updateViews);
return updateViews;
}
private void RegisterClicks(Context context, int[] appWidgetIds, RemoteViews widgetView)
{
Intent intentUpdate = new Intent(context, typeof(AppWidget));
intentUpdate.SetAction(AppWidgetManager.ActionAppwidgetUpdate);
//Update the current widget instance only, by creating an array that contains the widget’s unique ID//
int[] idArray = new int[] { appWidgetIds[0] };
intentUpdate.PutExtra(AppWidgetManager.ExtraAppwidgetIds, idArray);
PendingIntent pendingUpdate = PendingIntent.GetBroadcast(
context, appWidgetIds[0], intentUpdate,
PendingIntentFlags.UpdateCurrent);
widgetView.SetOnClickPendingIntent(Resource.Id.btnRefresh, pendingUpdate);
Intent launchAppIntent = new Intent(context, typeof(MainActivity));
PendingIntent launchAppPendingIntent = PendingIntent.GetActivity(context, 0, launchAppIntent, PendingIntentFlags.UpdateCurrent);
widgetView.SetOnClickPendingIntent(Resource.Id.pnlWeather, launchAppPendingIntent);
}
}
Related
i'm trying to create an application where data in a list must be inserted into a database table at once. I made some research and found out that this is possible using user-defined table types where in c# a datatable is used and passed to a stored procedure that is executed. now my problem is that there are no data tables in Xamarin.Android. so I thought to use a list instead. my idea was to create a list in the application and pass it to the webservice method, and in my webservice method I receive the list and convert it to a datatable then pass it as a parameter to the stored procedure. I wrote the following codes:
in my webservice:
[WebMethod]
public bool insrt_dt(List<Class1> lst)
{
SqlParameter param;
SqlConnection conn = new SqlConnection(new DBConnection().ConnectionString);
DataTable dt = list_to_dt(lst);
SqlCommand cmd = new SqlCommand("Insert_Customers", conn);
cmd.CommandType = CommandType.StoredProcedure;
if (conn.State == System.Data.ConnectionState.Closed)
{
conn.Open();
}
param = new SqlParameter("#tblcustomers", dt);
param.Direction = ParameterDirection.Input;
param.DbType = DbType.String;
cmd.Parameters.Add(param);
cmd.CommandTimeout = 300;
int a=cmd.ExecuteNonQuery();
if (a > 0)
{
return true;
}
else return false;
}
}
Class1:
public class Class1
{
public int id { get; set; }
public string name { get; set; }
public string country { get; set; }
}
in my Xamarin.Android app
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.activity_main);
Button btn = FindViewById<Button>(Resource.Id.button1);
btn.Click += delegate
{
wr.WebService1 ws = new wr.WebService1();
wr.Class1 class1 = new wr.Class1();
List<wr.Class1> lst = new List<wr.Class1>(){
new wr.Class1() { id = 1, name = "hgf", country = "khg" },
new wr.Class1() { id = 2, name = "hgf", country = "khg"} };
ws.insrt_dt(lst);
ws.insrt_dtCompleted += Ws_insrt_dtCompleted;
};
}
private void Ws_insrt_dtCompleted(object sender, wr.insrt_dtCompletedEventArgs e)
{
bool l = e.Result;
if (l == true)
Toast.MakeText(this, "khh", ToastLength.Long).Show();
else
Toast.MakeText(this, "ijo'pioo", ToastLength.Long).Show();
}
}
but I keep getting this error:
Argument 1: cannot convert from 'System.Collections.Generic.List<app_dt.wr.Class1>' to 'app_dt.wr.Class1[]
so I used these lines instead
new wr.Class1() { id = 1, name = "hgf", country = "khg" },
new wr.Class1() { id = 2, name = "hgf", country = "khg"} };
wr.Class1[] class1s = lst.ToArray();
ws.insrt_dt(class1s);
now I don't get an error, but it doesn't work, I mean why does it say that the webservice method input must be an array and I've created it as a list. any suggestions for this?
As i know, Xamarin do not support System.Data.SqlClient. If you want to use the database for the Xamarin android project, you could use the SQLite.NET.
Install the package from the NuGet.
NuGet: sqlite-net-pcl https://www.nuget.org/packages/sqlite-net-pcl/
For the code sample about how to use the database in Xamarin, you could check the link below. https://learn.microsoft.com/en-us/xamarin/get-started/quickstarts/database?pivots=windows
For Xamarin.Android, you could check the sample code in the link below. https://learn.microsoft.com/en-us/xamarin/android/data-cloud/data-access/using-sqlite-orm
I want running this method UpdateStatus when he close app
It is my coding method UpdateStatus in android:
String id = "";
var id = Application.Current.Properties["Id"].ToString();
User user = new User(id);
user.Id = id;
user.Datetime = time;
var responseStatus = await api.UpdateStatus(new UpdateStatusQuery(user));
Could you help me ?
In the Android, When you close your applcation, based on my research, above code can not be run, because all of threads or services will be killed when applcation is killed.
If you want to run above code when application in the background, you can can use background service to achieve that, due to background execution limits in Android 8.0 or later, if you code need some time to execute, and you want code running stably, Foreground Services is a good choice.
In xamarin forms, you can use dependenceService in the OnSleep method of App.xaml.cs
OnSleep - called each time the application goes to the background.
You can create a interface.
IService.cs
public interface IService
{
void Start();
}
Then achieved DependentService to start a Foreground Service.
[assembly: Xamarin.Forms.Dependency(typeof(DependentService))]
namespace TabGuesture.Droid
{
[Service]
public class DependentService : Service, IService
{
public void Start()
{
var intent = new Intent(Android.App.Application.Context,
typeof(DependentService));
if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.O)
{
Android.App.Application.Context.StartForegroundService(intent);
}
else
{
Android.App.Application.Context.StartService(intent);
}
}
public override IBinder OnBind(Intent intent)
{
return null;
}
public const int SERVICE_RUNNING_NOTIFICATION_ID = 10000;
public override StartCommandResult OnStartCommand(Intent intent,
StartCommandFlags flags, int startId)
{
// From shared code or in your PCL
CreateNotificationChannel();
string messageBody = "service starting";
var notification = new Notification.Builder(this, "10111")
.SetContentTitle(Resources.GetString(Resource.String.app_name))
.SetContentText(messageBody)
.SetSmallIcon(Resource.Drawable.main)
.SetOngoing(true)
.Build();
StartForeground(SERVICE_RUNNING_NOTIFICATION_ID, notification);
//==============================do you work=====================
String id = "";
var id = Application.Current.Properties["Id"].ToString();
User user = new User(id);
user.Id = id;
user.Datetime = time;
var responseStatus = await api.UpdateStatus(new UpdateStatusQuery(user));
return StartCommandResult.Sticky;
}
void CreateNotificationChannel()
{
if (Build.VERSION.SdkInt < BuildVersionCodes.O)
{
// Notification channels are new in API 26 (and not a part of the
// support library). There is no need to create a notification
// channel on older versions of Android.
return;
}
var channelName = Resources.GetString(Resource.String.channel_name);
var channelDescription = GetString(Resource.String.channel_description);
var channel = new NotificationChannel("10111", channelName, NotificationImportance.Default)
{
Description = channelDescription
};
var notificationManager = (NotificationManager)GetSystemService(NotificationService);
notificationManager.CreateNotificationChannel(channel);
}
}
}
Here is similar thread:
How to create service doing work at period time in Xamarin.Forms?
We would like to unit test an Episerver validator that ensures a content area doesn't have two blocks inside it:
public class LandingPageValidator : IValidate
{
public IEnumerable Validate(LandingPageDataModel instance)
{
if (instance.HeroBlock.Count > 1)
{
return new ValidationError[]
{
new ValidationError()
{
PropertyName = "Hero Block",
ErrorMessage = "Can only have one Hero Block"
}};
}
return Enumerable.Empty();
}
}
The problem we are facing is: how can we programatically add a second block to a content area, while inside the test project?
We have tried this approach: EpiServer - Add block to a content area programmatically but that seems to work only in the main application (ContentReference.GlobalBlockFooter is null in the test project).
In case it helps, here is the data model.
public class LandingPageDataModel : BasePageDataModel
{
[Display(
Name = "Hero block",
Description = "",
Order = 140,
GroupName = SystemTabNames.Content)]
[AllowedTypes(new[] { typeof(LandingPageHeroDataModel) })]
public virtual ContentArea HeroBlock { get; set; }
}
And here is what we have tried:
[Fact]
public void Validate_WhenHasMoreThanOneHeroBlock_ReturnsError()
{
// Arrange
var validator = new LandingPageValidator();
var model = new LandingPageDataModel { HeroBlock = new ContentArea()};
var item = new ContentAreaItem();
model.HeroBlock.Items.Add(item);
var expected = new ValidationError[]
{
new ValidationError()
{
PropertyName = "Hero Block",
ErrorMessage = "Can only have one Hero Block"
}};
// Act
var result = validator.Validate(model);
// Assert
Assert.Equal(expected, result);
}
However, it throws a null reference exception when we try to add the ContentAreaItem to the ContentArea (using model.HeroBlock.Items.Add). The exact error is:
System.NullReferenceException
Object reference not set to an instance of an object.
at EPiServer.Core.ContentArea.AddContentAreaItemsToFragments(IList items, Int32 startIndex)
You could use NSubstitute.
I don't know if you need to setup the ContentLoader as well, but I've included some code that does that.
But I think that you will be fine with just NSubstitute and .Returns
If it's just the Count property you want to setup, just use contentArea.Count.Returns(items.Count);
public class ContentAreaTests
{
private readonly IContentLoader _contentLoader;
private ContentReference _contentReferenceOne;
private ContentReference _contentReferenceTwo;
public ContentAreaTests()
{
this.contentLoader = Substitute.For<IContentLoader>();
}
[Fact]
public void MyTest()
{
this._contentReferenceOne = new ContentReference(1000);
this._contentReferenceTwo = new ContentReference(2000);
var contentArea = CreateContentArea(new List<ContentReference>
{
this._contentReferenceOne,
this._contentReferenceTwo
});
SetupContentLoader(this._contentLoader);
var validator = new LandingPageValidator();
var model = new LandingPageDataModel { HeroBlock = contentArea};
var expected = new ValidationError[]
{
new ValidationError()
{
PropertyName = "Hero Block",
ErrorMessage = "Can only have one Hero Block"
}
};
// Act
var result = validator.Validate(model);
// Assert
Assert.Equal(expected, result);
}
private void SetupContentLoader(IContentLoader contentLoader)
{
contentLoader.Get<ContentData>(this._contentReferenceOne)
.Returns(new MyBlock
{
Name = "My name"
});
contentLoader.Get<ContentData>(this._contentReferenceTwo)
.Returns(new MyBlock
{
Name = "My name2"
});
}
private static ContentArea CreateContentArea(IEnumerable<ContentReference> content)
{
var contentArea = Substitute.For<ContentArea>();
var items = content.Select(x => new ContentAreaItem
{
ContentLink = x
}).ToList();
contentArea.Items.Returns(items);
contentArea.Count.Returns(items.Count);
return contentArea;
}
}
I am making an android app with login via facebook and custom signup. I am using AWS dynamodb to store the user data.
I am able to store the data from facebook and custom signup but unable to scan that data. Actually I want whenever a user come back to login with his/her credentials either custom or facebook, the app should check whether the entered fields present in the table or not. If it is unavailable then app will ask user to signup first.
MainActivity
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private static final String TAG = "MainActivity";
Button login;
TextView signup;
TextView help;
EditText etUsername;
EditText etPassword;
String email;
String pass;
String email1;
String pass1;
private CognitoCachingCredentialsProvider credentialsProvider;
private CallbackManager callbackManager;
private LoginButton loginButton;
private ImageButton btnLoginFb;
private ProgressDialog progressDialog;
User user;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
setContentView(R.layout.activity_main);
etUsername = (EditText) findViewById(R.id.etUsername);
etPassword = (EditText) findViewById(R.id.etPassword);
login = (Button) findViewById(R.id.loginbutton);
signup = (TextView) findViewById(R.id.textViewsignup);
help = (TextView) findViewById(R.id.textViewHelp);
etUsername = (EditText) findViewById(R.id.etUsername);
etPassword = (EditText) findViewById(R.id.etPassword);
login.setOnClickListener(this);
signup.setOnClickListener(this);
help.setOnClickListener(this);
Context mContext = this.getApplicationContext();
credentialsProvider = new CognitoCachingCredentialsProvider(
mContext, // get the context for the current activity
"us-east-1:*******************************",
Regions.US_EAST_1
);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.loginbutton:
email = etUsername.getText().toString();
pass = etPassword.getText().toString();
AmazonDynamoDBClient ddbClient = new AmazonDynamoDBClient(credentialsProvider);
DynamoDBMapper mapper = new DynamoDBMapper(ddbClient);
if (email != null && pass != null) {
Intent slideactivity = new Intent(MainActivity.this, Welcome.class);
Bundle bndlanimation =
ActivityOptions.makeCustomAnimation(getApplicationContext(), R.anim.animation, R.anim.animation2).toBundle();
startActivity(slideactivity, bndlanimation);
return;
}
else {
AlertDialog alertDialog = new AlertDialog.Builder(
MainActivity.this).create();
// Setting Dialog Title
alertDialog.setTitle("Oops");
// Setting Dialog Message
alertDialog.setMessage("No data found. You have to signup first!!!");
// Setting Icon to Dialog
//alertDialog.setIcon(R.drawable.tick);
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
startActivity(new Intent(MainActivity.this, SignUp.class));
}
});
// Showing Alert Message
alertDialog.show();
}
break;
case R.id.textViewsignup:
Intent slideactivity = new Intent(MainActivity.this, SignUp.class);
Bundle bndlanimation =
ActivityOptions.makeCustomAnimation(getApplicationContext(), R.anim.animation, R.anim.animation2).toBundle();
startActivity(slideactivity, bndlanimation);
break;
case R.id.textViewHelp:
Intent slideactivity1 = new Intent(MainActivity.this, LoginHelp.class);
Bundle bndlanimation1 =
ActivityOptions.makeCustomAnimation(getApplicationContext(), R.anim.animation, R.anim.animation2).toBundle();
startActivity(slideactivity1, bndlanimation1);
break;
}
}
#Override
protected void onResume() {
super.onResume();
callbackManager = CallbackManager.Factory.create();
loginButton = (LoginButton) findViewById(R.id.login_button);
loginButton.setReadPermissions("public_profile", "email", "user_friends");
btnLoginFb = (ImageButton) findViewById(R.id.btnLoginFb);
btnLoginFb.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("Loading...");
progressDialog.show();
loginButton.performClick();
loginButton.setPressed(true);
loginButton.invalidate();
loginButton.registerCallback(callbackManager, mCallBack);
loginButton.setPressed(false);
loginButton.invalidate();
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
}
private FacebookCallback<LoginResult> mCallBack = new FacebookCallback<LoginResult>() {
#Override
public void onSuccess(LoginResult loginResult) {
progressDialog.dismiss();
// App code
GraphRequest request = GraphRequest.newMeRequest(
loginResult.getAccessToken(),
new GraphRequest.GraphJSONObjectCallback() {
#Override
public void onCompleted(
JSONObject object,
GraphResponse response) {
Log.e("response: ", response + "");
try {
user = new User();
user.facebookID = object.getString("id").toString();
pass = user.facebookID;
Log.e(pass, "id");
user.email = object.getString("email").toString();
email = user.email;
Log.e(email, "email");
user.name = object.getString("name").toString();
user.gender = object.getString("gender").toString();
PrefUtils.setCurrentUser(user, MainActivity.this);
} catch (Exception e) {
e.printStackTrace();
}
Toast.makeText(MainActivity.this, "welcome " + user.name, Toast.LENGTH_LONG).show();
Intent intent = new Intent(MainActivity.this, Welcome.class);
startActivity(intent);
finish();
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email,gender, birthday");
request.setParameters(parameters);
request.executeAsync();
new db().execute("");
}
#Override
public void onCancel() {
progressDialog.dismiss();
}
#Override
public void onError(FacebookException e) {
progressDialog.dismiss();
}
};
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class db extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
AmazonDynamoDBClient ddbClient = new AmazonDynamoDBClient(credentialsProvider);
DynamoDBMapper mapper = new DynamoDBMapper(ddbClient);
Item item = new Item();
mapper.load(Item.class, email, pass);
if(item==null)
{
startActivity(new Intent(MainActivity.this,SignUp.class));
}
else{
item.setEmail(email);
item.setPass(pass);
mapper.save(item);
startActivity(new Intent(MainActivity.this,Welcome.class));
}
mapper.load(Item.class, email,pass);
if(item==null) {
startActivity(new Intent(MainActivity.this,SignUp.class));
}
else{
startActivity(new Intent(MainActivity.this,Welcome.class));
}
return "Executed";
}
#Override
protected void onPostExecute(String result) {
}
#Override
protected void onPreExecute() {
}
#Override
protected void onProgressUpdate(Void... values) {
}
}
Logcat:-
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:309)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.DynamoDBMappingException: Null key found for public java.lang.String com.ediode.graphics3d.Item.getEmail()
at com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.DynamoDBMapper.getKey(DynamoDBMapper.java:434)
at com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.DynamoDBMapper.load(DynamoDBMapper.java:387)
at com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.DynamoDBMapper.load(DynamoDBMapper.java:466)
at com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.DynamoDBMapper.load(DynamoDBMapper.java:350)
at com.ediode.graphics3d.MainActivity$db.doInBackground(MainActivity.java:339)
at com.ediode.graphics3d.MainActivity$db.doInBackground(MainActivity.java:333)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
I am stuck on this from 4,5 hours. It would be awesome if anyone can help me this stuff.
Thanks
What does your mapper class look like for item? I'm going to assume you have the email as a hash key with no range key because the login username should be unique. You only need the hash key of the object to load it using the load method. This is assuming that there is no range key.
Try using this.
AmazonDynamoDBClient ddbClient = new AmazonDynamoDBClient(credentialsProvider);
DynamoDBMapper mapper = new DynamoDBMapper(ddbClient);
// Use the password as the third parameter if it is a range key.
Item item = mapper.load(Item.class, email1);
if(item == null){
// That email is not in the database
}
else{
// Does exist in database, now compare password.
}
I'm using both ORMLite and Dapper in a project and would like standardized on the naming conventions used by both ORMs. In order to do this I'd like to set the NamingStrategy as such:
OrmLiteConfig.DialectProvider.NamingStrategy = new OrmLiteNamingStrategyBase();
and a unit test to verify
public class BorrowerUnitTests : IDisposable
{
private readonly ServiceStackHost appHost;
public BorrowerUnitTests()
{
//Set ORMLite to work with columns like ColumnLikeThis
// OrmLiteConfig.DialectProvider.NamingStrategy = new OrmLiteNamingStrategyBase();
appHost = new BasicAppHost(typeof(BorrowerServices).Assembly)
{
ConfigureContainer = container =>
{
container.Register<IDbConnectionFactory>(c =>
new OrmLiteConnectionFactory(ConfigUtils.GetConnectionString("LoanOrigination:Default"), PostgreSqlDialect.Provider));
container.RegisterAutoWiredAs<Repository, IRepository>();
container.RegisterAutoWired<BorrowerDomainService>();
}
}
.Init();
}
public void Dispose()
{
appHost.Dispose();
}
[Fact]
public void TestPostMethod()
{
var service = appHost.Container.Resolve<BorrowerServices>();
BorrowerCreate request = new BorrowerCreate();
request.FirstName = "Orm";
request.LastName = "Lite";
request.Email = "ormlite#servicestack.net";
var response = service.Post(request);
Assert.True(response.Id > 0, "Id retured from POST cannot be zero");
}
[Fact]
public void TestGetMethod()
{
var service = appHost.Container.Resolve<BorrowerServices>();
BorrowerGet request = new BorrowerGet();
request.Id = 1;
var response = service.Get(request);
Assert.Equal("ormlite#servicestack.net", response.Email);
}
[Fact]
public void TestPutMethod()
{
var service = appHost.Container.Resolve<BorrowerServices>();
BorrowerUpdate request = new BorrowerUpdate();
request.Id = 5;
request.FirstName = "MyFirstName2";
request.LastName = "MyLastName2";
request.Email = "MyEmail#Example.com";
var response = service.Put(request);
Assert.True(response.FirstName == "MyFirstName2", "FirstName is noth equal");
}
}
No matter where I put the NamingStrategy statement, I get a exception from the DialectProvider property of the OrmLiteConfig class, "You must set the singleton 'OrmLiteConfig.DialectProvider' to use the OrmLiteWriteExtensions"
Where's the proper place to set this property?
Thank you,
Stephen
You can just assign it to the DialectProvider you're using, e.g:
PostgreSqlDialect.Provider.NamingStrategy = new OrmLiteNamingStrategyBase();
The OrmLiteConfig.DialectProvider is a singleton that can either be set manually:
OrmLiteConfig.DialectProvider = PostgreSqlDialect.Provider;
OrmLiteConfig.DialectProvider.NamingStrategy = new OrmLiteNamingStrategyBase();
Or implicitly with the new OrmLiteConnectionFactory() constructor, which to run, needs to resolved from the IOC:
container.Register<IDbConnectionFactory>(c => new OrmLiteConnectionFactory(...));
using (var db = container.Resolve<IDbConnectionFactory>().Open())
{
OrmLiteConfig.DialectProvider.NamingStrategy = new OrmLiteNamingStrategyBase();
}