Is Google Void Purchases API bug?

When an app user buys the goods for a period of time, the user can initiate a refund, and Google himself will perform a refund without the developer.

At that time the system should be the user's “coins“ to recover. So I read the [url=https://developers.google.com/android-publisher/voided-purchases]Google void purchase API[/url] and found:

The Google Play Voided Purchases API allows you to revoke access to in-app products that are associated with purchases that a user has voided. The user can void a purchase in the following ways:

The user requests a refund for their order.
The user cancels their order.
An order is charged back.
So I found an order ID by this API's purchaseToken, and I use the order ID in the Google developers console find some of the orders are Refund, but some are Charged, I checked my own mistakes, but did not found.

Is Google Void Purchases Bug ?

Why Charged order is return by Google Void Purchases ?

How do I get all refund orders ?

how to use ContactsContract.Contacts.CONTACT_LAST_UPDATED_TIMESTAMP in android?

I wordering how to use ContactsContract.Contacts.CONTACT_LAST_UPDATED_TIMESTAMP in android ?

Below is my code which shows IllegalStateException.
[code] Cursor allContacts = this.getContentResolver().query( ContactsContract.RawContacts.CONTENT_URI, null, null, null, null); StringBuilder sbCurrentVersion = new StringBuilder(); allContacts.moveToFirst(); for (int i = 0; i < allContacts.getCount(); i++) { String id = allContacts.getString(allContacts.getColumnIndex(ContactsContract.Contacts._ID)); String name = allContacts.getString(allContacts.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)); String col = allContacts.getString(allContacts.getColumnIndex(ContactsContract.Contacts.CONTACT_LAST_UPDATED_TIMESTAMP)); sbCurrentVersion.append(" "+id+":"+name+" : "+col); allContacts.moveToNext(); } It shows following IllegalStateException java.lang.IllegalStateException: Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it. at android.database.CursorWindow.nativeGetString(Native Method) at android.database.CursorWindow.getString(CursorWindow.java:438) at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:51) at android.database.CursorWrapper.getString(CursorWrapper.java:137) at com.example.dj.contentobserverdemo.ContentObserverService.sGetCurrentContatcsVersions(ContentObserverService.java:111) at com.example.dj.contentobserverdemo.ContentObserverService.access$000(ContentObserverService.java:23) at com.example.dj.contentobserverdemo.ContentObserverService$MyContentObserver.onChange(ContentObserverService.java:83) at android.database.ContentObserver.onChange(ContentObserver.java:130) at android.database.ContentObserver.onChange(ContentObserver.java:145) at android.database.ContentObserver$NotificationRunnable.run(ContentObserver.java:216) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.os.HandlerThread.run(HandlerThread.java:61)[/code]

DIsplay User's Information after Logging In Xamarin Android

I have a login system where the user have to register and can login after they register for an account. What I am trying to do is to display user information into a new .axml after successfully logging in. Any help will be appreciated. Code is shown below.

MainActivity.cs [code]using Android.App; using Android.Widget; using Android.OS; using Android.Gms.Ads; using SQLite; using System.IO; using System; namespace LogInApplication { [Activity(Label = "Log In Application", MainLauncher = true, Icon = "@mipmap/icon")] public class MainActivity : Activity { protected AdView mAdView; private InterstitialAd interstitialAds = null; EditText txtusername; EditText txtPassword; Button btncreate; Button btnsign; Button btnedit; protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); // Set our view from the "main" layout resource SetContentView(Resource.Layout.Main); // Get our button from the layout resource, // and attach an event to it interstitialAds = new InterstitialAd(this); mAdView = FindViewById<AdView>(Resource.Id.adView); var adRequest = new AdRequest.Builder().Build(); mAdView.LoadAd(adRequest); //setting unit id for interstitial ad interstitialAds.AdUnitId = "ca - app - pub - 3113453000644941 / 8764416112"; //loading test ad using adrequest interstitialAds.LoadAd(adRequest); interstitialAds.AdListener = new AdListener(this); btnsign = FindViewById<Button>(Resource.Id.btnlogin); btncreate = FindViewById<Button>(Resource.Id.btnregister); btnedit = FindViewById<Button>(Resource.Id.btnforgot); txtusername = FindViewById<EditText>(Resource.Id.txtusername); txtPassword = FindViewById<EditText>(Resource.Id.txtpwd); btnsign.Click += Btnsign_Click; btncreate.Click += Btncreate_Click; btnedit.Click += Btnedit_Click; CreateDB(); } class AdListener : Android.Gms.Ads.AdListener { MainActivity main; public AdListener(MainActivity innerMain) { main = innerMain; } public override void OnAdLoaded() { base.OnAdLoaded(); main.interstitialAds.Show(); } } private void Btncreate_Click(object sender, EventArgs e) { StartActivity(typeof(RegisterActivity)); } private void Btnedit_Click(object sender, EventArgs e) { StartActivity(typeof(ForgotActivity)); } private void Btnsign_Click(object sender, EventArgs e) { try { string dpPath = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal), "user.db3"); //Call Database var db = new SQLiteConnection(dpPath); var data = db.Table<LoginTable>(); //Call Table var data1 = data.Where(x => x.username == txtusername.Text && x.password == txtPassword.Text).FirstOrDefault(); //Linq Query if (data1 != null) { Toast.MakeText(this, "Login Success", ToastLength.Short).Show(); StartActivity(typeof(WelcomeActivity)); } else { Toast.MakeText(this, "Username or Password invalid", ToastLength.Short).Show(); } } catch (Exception ex) { Toast.MakeText(this, ex.ToString(), ToastLength.Short).Show(); } } public string CreateDB() { var output = ""; output += "Creating Database if it doesn't exits"; string dpPath = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal), "user.db3"); //Create New Database var db = new SQLiteConnection(dpPath); output += "\n Database Created....."; return output; } } }[/code] Main.axml
[code]<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:ads="http://schemas.android.com/apk/res-auto" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/darker_gray" android:weightSum="100" android:minWidth="25px" android:minHeight="25px"> <TextView android:text="LOGIN" android:textAppearance="?android:attr/textAppearanceMedium" android:textColor="@android:color/black" android:textSize="25sp" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:id="@+id/textView1" /> <EditText android:id="@+id/txtusername" android:layout_width="fill_parent" android:textColorHint="@android:color/black" android:hint="Username" android:layout_height="wrap_content" /> <EditText android:id="@+id/txtpwd" android:layout_width="fill_parent" android:textColorHint="@android:color/black" android:hint="Password" android:inputType="textPassword" android:layout_height="wrap_content" /> <Button android:id="@+id/btnlogin" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:background="@drawable/ButtonLogInStyle" android:textSize="20sp" android:text="Log In" android:layout_marginLeft="20dp" android:layout_marginRight="20dp" android:layout_marginBottom="20dp" /> <Button android:id="@+id/btnforgot" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:background="@drawable/ButtonLogInStyle" android:textSize="15sp" android:text="Forgot Password?" android:layout_marginLeft="60dp" android:layout_marginRight="60dp" android:layout_marginBottom="20dp" /> <Button android:id="@+id/btnregister" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:background="@drawable/ButtonSignUpStyle" android:textSize="20sp" android:text="Register" android:layout_marginLeft="20dp" android:layout_marginRight="20dp" android:layout_marginBottom="170dp" /> <com.google.android.gms.ads.AdView android:id="@+id/adView" android:layout_width="match_parent" android:layout_height="wrap_content" ads:adSize="BANNER" ads:adUnitId="ca-app-pub-3940256099942544/6300978111" /> </LinearLayout>[/code]

Direction Arrow movement on path on canvas for indoor navigation

I have designed a floor image on canvas for indoor navigation, now i want to move image along the path which i have calculated, just help me out to navigate bitmap on the given path?

Cannot resolve Symbol LENGTH_LONG

i am beginner i am facing with that problem that cannot resolve symbol length_long ,i used Android studio 2.2.3 and i change my all versions in grid, but still the same problem
[code]private void showLocationSettings() { Snackbar snackbar = Snackbar.make(mainCoordinatorLayout, "Location Error: GPS Disabled!", Snackbar.LENGTH_LONG) .setAction("Enable", new View.OnClickListener() { @Override public void onClick(View v) { startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS)); } }); snackbar.setActionTextColor(Color.RED); snackbar.setDuration(Snackbar.LENGTH_INDEFINITE);[/code]

WebView vs Chrome Custom Tab

I am building an app where in a Detail Activity I have to show a web page. I was going to use WebView, but then I saw Chrome Custom Tab.

What do you guys think it's better to implement and why?

How to verify if target=_blank worked in Android webview

There is an Android app which uses HTML content within a WebView. Now, this HTML content contains a target=_blank link. Sometimes it works, but sometimes it gets blocked (i.e. link opens in same window), for unknown reasons.
[code]<!-- Does not always work in WebView --> <a id="link" href="http://example.com" target="_blank">link</a> $('#link').click(function() { // if (linkOpenedInNewBrowserWindow.wasSuccessful) // Do something });[/code] How is it possible to check whether a click on this link actually opens the link in a new browser window or not?

How to handle ImageView click inside a row in RecyclerView?

When I click ImageView, it go to GridView activity with position. When I click others area inside a cardview, it go to ItemDetailActivtiy with position. How to do one line or less than coding when click.
[code]public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { TextView tv_restaurant_name, tv_restaurant_address, tv_restaurant_phone; ImageView imgview; public ViewHolder(View itemView) { super(itemView); tv_restaurant_name = (TextView) itemView.findViewById(R.id.tv_restaurant_name); tv_restaurant_address = (TextView) itemView.findViewById(R.id.tv_restaurant_address); tv_restaurant_phone = (TextView) itemView.findViewById(R.id.tv_restaurant_phone); imgview = (ImageView) itemView.findViewById(R.id.imgview); tv_restaurant_name.setOnClickListener(this); tv_restaurant_address.setOnClickListener(this); tv_restaurant_phone.setOnClickListener(this); imgview.setOnClickListener(this); } @Override public void onClick(View v) { int position = getAdapterPosition(); if (v.getId() == imgview.getId()) { Intent intent = new Intent(context, GridView.class); Bundle bundle = new Bundle(); bundle.putInt("ID", Integer.valueOf(mRestaurantList.get(position).getRestaurantId())); intent.putExtras(bundle); context.startActivity(intent); } else { context.startActivity(new Intent(context, ItemDetailActivtiy.class)); } } }[/code]

SQLite Database Android - Joining Tables

Hi guys, i am new on working for joining tables on my android application. I have my 3 tables named EMPLOYEES, PASSWALL and NOTEPAD. I want to access the other tables using a foreign key on my EMPLOYEES table. Do you get my point?

I need a QUERY for that and how to SELECT it and how to access data on other tables.

So how is the approach for that? thanks appreciate your suggestions.
Syed Zain Nasir

I am Syed Zain Nasir, the founder of <a href=https://www.TheEngineeringProjects.com/>The Engineering Projects</a> (TEP). I am a programmer since 2009 before that I just search things, make small projects and now I am sharing my knowledge through this platform.I also work as a freelancer and did many projects related to programming and electrical circuitry. <a href=https://plus.google.com/+SyedZainNasir/>My Google Profile+</a>

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Syed Zain Nasir