Bug 27392 - Xamarin.Mobile 0.7.4 (Android component) - Issues accessing AddressBook
Summary: Xamarin.Mobile 0.7.4 (Android component) - Issues accessing AddressBook
Status: RESOLVED ANSWERED
Alias: None
Product: Components
Classification: Xamarin
Component: Xamarin Components ()
Version: Production (addons.xamarin.com)
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: ---
Assignee: Bill Holmes
URL:
Depends on:
Blocks:
 
Reported: 2015-02-25 03:41 UTC by Shane Raiteri
Modified: 2015-06-04 11:21 UTC (History)
1 user (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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RESOLVED ANSWERED

Description Shane Raiteri 2015-02-25 03:41:59 UTC
Hi devs,

Currently having issues on a particular device (HTC One M7) accessing the AddressBook with the Xamarin.Mobile API in Android. The code is set up in the following way:

AddrBook = new AddressBook(_context) { PreferContactAggregation = false };
AddrBook.RequestPermission().ContinueWith(t =>
            {
                 if (!t.Result) {
                    //Failure path
                }

                try
                {
                    var nativeContacts = AddrBook.Distinct().OrderBy(p => p.DisplayName).ToList();
                    ....
                }
                catch
                {
                    //Failure path
                }
            });

On the line where nativeContacts are being resolved, it times out after 10-15 seconds with the following exception:

 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x00000] in <filename unknown>:0 
  at Android.Runtime.JNIEnv.CallObjectMethod (IntPtr jobject, IntPtr jmethod, Android.Runtime.JValue[] parms) [0x00064] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.20-series/ba9bbbdd/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:195 
  at Android.Content.ContentResolver.Query (Android.Net.Uri uri, System.String[] projection, System.String selection, System.String[] selectionArgs, System.String sortOrder) [0x0004b] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.20-series/ba9bbbdd/source/monodroid/src/Mono.Android/platforms/android-21/src/generated/Android.Content.ContentResolver.cs:790 
  at Xamarin.Contacts.ContactHelper+<GetContacts>d__18.MoveNext () [0x000c8] in c:\BuildAgent\work\bb79242ef4f930a5\MonoDroid\Xamarin.Mobile\Contacts\ContactHelper.cs:126 
  at Xamarin.Contacts.ContactHelper+<GetContacts>d__9.MoveNext () [0x00109] in c:\BuildAgent\work\bb79242ef4f930a5\MonoDroid\Xamarin.Mobile\Contacts\ContactHelper.cs:82 
  at Xamarin.Contacts.ContactReader+<GetEnumerator>d__4.MoveNext () [0x002ed] in c:\BuildAgent\work\bb79242ef4f930a5\MonoDroid\Xamarin.Mobile\Contacts\ContactReader.cs:99 
  at System.Collections.Generic.List`1[Xamarin.Contacts.Contact].AddEnumerable (IEnumerable`1 enumerable) [0x00000] in <filename unknown>:0 
  at System.Collections.Generic.List`1[Xamarin.Contacts.Contact]..ctor (IEnumerable`1 collection) [0x00000] in <filename unknown>:0 
  at System.Linq.Enumerable.ToList[Contact] (IEnumerable`1 source) [0x00000] in <filename unknown>:0 
  at BankApp.Common.Lib.BaseContactService.LoadContacts () [0x0006a] in /Users/digitalbank/Desktop/Projects/banknativeapp/Common/BankApp.Common.Lib/Services/BaseContactService.cs:70 
  --- End of managed exception stack trace ---
java.lang.IllegalArgumentException: the bind value at index 9 is null
	at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:167)
	at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:137)
	at android.content.ContentProviderProxy.query(ContentProviderNative.java:463)
	at android.content.ContentResolver.query(ContentResolver.java:476)
	at android.content.ContentResolver.query(ContentResolver.java:419)
	at dalvik.system.NativeStart.run(Native Method)

A little confused why it is happening on this device alone, but wondering if there is something contact related that can be deduced from the error exception?

Regards,
Shane.
Comment 1 Bill Holmes 2015-06-04 11:21:03 UTC
I am thinking the problem is with your Linq query.  For my device I was getting exceptions on the OrderBy part.  I believe that I have contacts with a null DisplayName.

For me changing the statement to the avoided the crash.

var nativeContacts = addrBook.Distinct().
    OrderBy(p => string.IsNullOrEmpty(p.DisplayName) ? "" : p.DisplayName)
    .ToList();

If this does not resolve the issue I suggest trying the statement in parts;

var nativeContacts = AddrBook.ToList ();

var nativeContacts2 = AddrBook.Distinct ().ToList ();

var nativeContacts3 = addrBook.Distinct().
    OrderBy(p => string.IsNullOrEmpty(p.DisplayName) ? "" : p.DisplayName)
    .ToList();

See which one gives you trouble.