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Android contacts - custom field icon not showing in android 6

The goal
I'm working on application that keeps own contacts in contacts database. I want to add my own field with my logo that leads to my application's edit form.
What I did already
Working with this tutorial: http://www.c99.org/2010/01/23/writing-an-android-sync-provider-part-2/
and a couple of other sources i have assembled something like this:
AndroidMainifest.xml:
<service android:enabled="true" android:exported="true" android:name="com.MySyncAdapterService" android:process=":contacts">
<intent-filter android:icon="#drawable/icon">
<action android:name="android.content.SyncAdapter" />
</intent-filter>
<meta-data android:name="android.provider.CONTACTS_STRUCTURE" android:resource="#xml/contacts" />
<meta-data android:name="android.content.SyncAdapter" android:resource="#xml/sync_contacts" />
</service>
Contacts.xml:
<ContactsAccountType xmlns:android="http://schemas.android.com/apk/res/android">
<ContactsDataKind
android:icon="#drawable/icon"
android:smallIcon="#drawable/icon"
android:mimeType="vnd.android.cursor.item/vnd.my.contact"
android:summaryColumn="data2"
android:detailColumn="data3"
android:detailSocialSummary="true" >
</ContactsDataKind>
</ContactsAccountType>
The problem
As can be seen on first image my custom field is displayed with icon properly in Android 4.3. Unfortunatetly Android 6.0.1 does display my field but without the icon.
Any help will be appreciated, I'm running out of hair on my head ;)

I think i resolved my problem. Android 6.0 seems to ignore ContactsDataKind icon property. In order to provide icon for custom field you need to provide action hadndling it. It will use intent filter's icon if it's provided. If not it will use your application's icon.
<activity android:name=".ContactActivity">
<intent-filter android:icon="#drawable/icon">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/vnd.my.contact" />
</intent-filter>
</activity>

Widget won't work/install

My widget won't install. I'm trying to install a home screen widget using android. I've put the widgetprovider in the manifest along with a configuration class. It just doesn't show up in the list of widgets and I hence can't install it! Console gives no errors.
The update widget receiver is there in the manifest. But the widget isn't even created so what's the point? The widget won't get created!
I've created the layout, created the widget information file and filled in the fields, registered it in the manifest, created the classes, it still won't work.
<receiver
android:name=".WidgetProvider"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.appwidget.action.WIDGET_PROVIDE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="#xml/widget_info"/>
</receiver>
<activity
android:name=".WidgetConfig"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.appwidget.action.WIDGET_CONFIG" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>

There is an error in your manifest. The intent filter should contain
action android:name="android.appwidget.action.APPWIDGET_UPDATE"
not:
action android:name="android.appwidget.action.WIDGET_PROVIDE"
If you have more than one widget provider, each one needs its own receiver containing this action. Here is an example for one widget provider:
<receiver android:name=".WidgetProvider"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
</intent-filter>
<meta-data android:name="android.appwidget.provider" android:resource="#layout/widget_provider_2x1"/>
</receiver>

Changing receiver namespace without breaking already placed widgets

When I change the namespace of my widget provider, the widget goes blank and doesn't work until I delete it and add it again.
How would one change the namespace and the receiver name for a widget without breaking already placed widgets.
Before rename:
<receiver android:name="com.creativitality.labs.timezoneswidget.WidgetProvider" android:label="#string/widget" >
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/widget_info_large" />
</receiver>
After moving and renaming provider:
<receiver android:name="com.creativitality.labs.timezoneswidget.widget.WidgetLarge" android:label="#string/widget_4x1" >
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/widget_info_large" />
</receiver>

For activities, you can create an <activity-alias> element in your manifest that points to the new name of the <activity>.
There is no solution for receivers. <receiver-alias> does not exist. Your receiver must keep its original name forever or it will break.

Android: Widgets not showing in app drawer ICS

I have two widgets and neither of them will show up in the app drawer. What's weird is that if I remove one from the manifest it won't show up either but I can't see what I am doing wrong. From all the other questions I searched it looks right. The app is not being installed on the SD card.
Anyone have any ideas?
AndroidManifest.xml
<receiver
android:name=".appwidgets.WidgetLarge"
android:label="#string/Widget_large"
android:icon="#drawable/icon" >
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<intent-filter>
<action android:name="com.groggs.action.CACHE_UPDATE_FINISHED" />
</intent-filter>
<intent-filter>
<action android:name="WIDGET_UPDATE" />
<data android:scheme="content" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/widget_large_info" />
</receiver>
<receiver
android:name=".appwidgets.WidgetSmall"
android:label="#string/Widget_small"
android:icon="#drawable/icon" >
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<intent-filter>
<action android:name="com.groggs.action.CACHE_UPDATE_FINISHED" />
</intent-filter>
<intent-filter>
<action android:name="WIDGET_UPDATE" />
<data android:scheme="content" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="#xml/widget_small_info" />
</receiver>
widget_large_info.xml
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:maxWidth="450dp"
android:maxHeight="352dp"
android:updatePeriodMillis="0"
android:initialLayout="#layout/widget_layout_large"
android:configure="com.groggs.appwidgets.config.HubQuickViewWidgetConfig" >
</appwidget-provider>
widget_small_info.xml
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:maxWidth="450dp"
android:maxHeight="82dp"
android:updatePeriodMillis="0"
android:initialLayout="#layout/widget_layout_small"
android:configure="com.groggs.appwidgets.config.HubQuickViewWidgetConfig" >
</appwidget-provider>

Add "minHeight" and "minWidth" attributes to your appwidget-provider elements for each of your appwidgets and see if this does the trick for you.
If you check logcat when running it in the emulator, you should notice the launcher outputting a message about invalid dimensions and the name of your widget will be attached to this line.
I just had this issue and this is how I solved it (although I had one min and on max provided on accident). The logcat message said I had a dimension of (108, 0). This lead me into looking at all my dimensions since it was yelling at me for height being 0.
This was my post:
App Widget not displaying in ICS app drawer

If your app is only an appwidget, with no activities besides a configuration one, you need a dummy main activity to make your appwidget appear in the drawer.
See the original issue in Google Code: http://code.google.com/p/android/issues/detail?id=24208, this answer: Android 4.0: widgets not appearing? and also this interesting thread in Android Devs Google Group: https://groups.google.com/forum/?fromgroups#!topic/android-developers/bvlk3EOV6Xk (it's about Honeycomb, but applies to Android versions 3.x and greater)

How to add multiple widgets in the same app?

I've just finished my Android widget. Now I need to have different sizes of this widget for the user to choose from.
For example, I need a medium, small and large size widget, so when the user installs the app and hold the home screen then choose widget, in the widget menu I want him to see three widgets with the same app name but with the size. Something like this:
helloSmall
helloMedium
helloLarge
I have the medium one ready, but how can I add the small and the large in the same app? Knowing that all three sizes contain the same exact data and actions, just the size and the background are different.

You need a receiver definition for each type in your manifest file like:
<receiver android:name=".MyWidget" android:label="#string/medium_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="#xml/medium_widget_provider" />
</receiver>
<receiver android:name=".MyWidget" android:label="#string/large_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="#xml/large_widget_provider" />
</receiver>
This would allow you to have the same AppWidgetProvider class be used for multiple widgets, with different widget names and different sizes defined in the <appwidget-provider> XML.
Now if you need more differences in your widgets than what is in the <appwidget-provider> XML I would create a base widget class that implements all the common behavoir between the different types:
public abstract class MyBaseWidget extends AppWidgetProvider
And then each of your concrete implementations could extend MyBaseWidget. Then in your manifest file you would have a receiver definition for each of your concrete implementations like:
<receiver android:name=".MyMediumWidget" android:label="#string/medium_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="#xml/medium_widget_provider" />
</receiver>
<receiver android:name=".MyLargeWidget" android:label="#string/large_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="#xml/large_widget_provider" />
</receiver>

Actually, android:name for each widget have to be different. If you will do this as in example, only one widget will be visible in widgets list.

Guys, I had the same problem.
You need to actually add a second widget provider aswell;
<receiver android:name=**".MyWidget**" android:label="#string/medium_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="#xml/medium_widget_provider" />
</receiver>
<receiver android:name=**".MyWidget2"** android:label="#string/large_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="#xml/large_widget_provider" />
</receiver>
Enjoy

Ok so basically you will need:
layout file fore each widget. ex: main_small.xml, main_medium.xml ...
in the xml directory add a provider for each widget. ex: small_provider.xml, medium_provider.xml ... and so on (note if you don't have an xml directory add it under the drawable directory).
now what!
define a receiver in the manifest for each widget. (just like the example in the main answer)
you can use the same layout or deferent layout. basically this is up to you.
in your provider you should have something like this:
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="146dip"
android:minHeight="138dip"
android:updatePeriodMillis="10000"
android:initialLayout="#layout/main"
/>
make sure, for each provider to specify the target layout file you want to use. in this code I'm asking for the file main.xml in the layout directory. for my medium widget for example i'll have another provider with the same exact code but i'll change the last line
> android:initialLayout="#layout/medium".
I hope this helps if not let me know and I can upload a working example on my website and you can take a closer look at it. please let me know how it goes.
best of luck.

Some extra info to the other answers...
If you are duplicating the files mentioned, and if your widget uses a Service to provide some functionality, you might have to duplicate your service.
If you duplicate your Service, remember to update your manifest with the new service, otherwise the new service won't run...
This wasted some time for me.
If you use any BroadcastReceiver to send Intents to your duplicate Services... don't forget to update that code too:
you must now send intents to each of the services.