.save failing on Android O device

[JacobVanAssche]

I recently just updated my device to Android O and now the .save methods no longer work.

java.lang.SecurityException: Failed to find provider null for user 0; expected to find a valid ContentProvider for this authority at android.os.Parcel.readException(Parcel.java:1942) at android.os.Parcel.readException(Parcel.java:1888) at android.content.IContentService$Stub$Proxy.notifyChange(IContentService.java:801) at android.content.ContentResolver.notifyChange(ContentResolver.java:2046) at android.content.ContentResolver.notifyChange(ContentResolver.java:1997) at android.content.ContentResolver.notifyChange(ContentResolver.java:1967) at com.activeandroid.Model.save(Model.java:162)

[agonper]

Same problem here, hope gets fixed soon

[zuiaichiyu]

same problem

[uncledoc]

on latest android emulator works fine for me

[JacobVanAssche]

@uncledoc You're using Android 8.0.0 on the emulator? I'm still getting the same error on an emulator.

[pavelannin]

Hi.
Same problem.
I set compileSdkVersion = 25 and targetSdkVersion = 25. On Android O (API 26) it works.
This is not a solution, it's a HotFix.
Waiting for a solution from the developers.

[tzutalin]

Met the same issue on Android 8

[JacobVanAssche]

I think my plan is to convert over to Google's new Room Persistence Library instead of using ActiveAndroid. It doesn't look like ActiveAndroid is maintained at all anymore.

[martino2k6]

This can be fixed by adding

<provider
  android:name="com.activeandroid.content.ContentProvider"
  android:authorities="<your.package.name>"
  android:enabled="true"
  android:exported="false">
</provider>

to your manifest file.

But I'd agree with @JacobVanAssche, if you can then move to a different library as this one hasn't been updated for a while and probably won't be.

[martiwi]

Importing the source code into your project and compile it with API 26 solved it.

[giperwlad]

In my case it was fixed as following steps:

1. clone source code to my ap as module
2. hardcode sAuthority string field in class com.activeandroid.content.ContentProvider:
   private static final String sAuthority="your.package.name";
3. Declare provider in manifest
   

[azizimusa]

@martino2k6 solution work for me.

[ricardomorsch]

if your package is different from your applicationId then you should use the applicationId

<provider
            android:name="com.activeandroid.content.ContentProvider"
            android:authorities="${applicationId}"
            android:exported="false" />

[adrianbudzynski]

@martino2k6 & @ricardomorsch
Yours solution is good but not in all cases. When project have defined model classes in java source code through addModelClasses configuration method application will still be crashing cause model classes wont be loaded through that configuration. In that situation You need to move model definition to the AndroidManifest.xml file.

[joshuatam]

@adrianbudzynski
I get it work by extending com.activeandroid.content.ContentProvider

AndroidManifest.xml

<provider
        android:name=".content.DatabaseContentProvider"
        android:authorities="${applicationId}"
        android:exported="false" />

DatabaseContentProvider.java

...
import com.activeandroid.content.ContentProvider;
...

public class DatabaseContentProvider extends ContentProvider {

	@Override
	protected Configuration getConfiguration() {
		Configuration.Builder builder = new Configuration.Builder(getContext());
		builder.addModelClass(SomeModel.class);
		builder.addModelClass(OtherModel.class);
		return builder.create();
	}
}

[azizimusa]

Solution by @joshuatam is working.

To get a context at this line Configuration.Builder builder = new Configuration.Builder(context); inside DatabaseContentProvider. Can just use getContext()

[joshuatam]

@azizimusa Thanks, corrected.

[PareshMayani]

Thanks @joshuatam, your solution is working.

[ImangazalievM]

Hello, guys! You can use my library - https://github.com/ImangazalievM/ReActiveAndroid. I forked the ActiveAndroid and fixed all bugs. It works fine on Android O and other versions.

@JacobVanAssche @agonper @zuiaichiyu @anninpavel @azizimusa @PareshMayani @joshuapinter @adrianbudzynski @martino2k6 @tzutalin

[erhanbicer]

Thanks! @joshuatam is working

[liupeng826]

@joshuatam
issue again when add 1 column when I follow the Schema-migrations
https://github.com/pardom-zz/ActiveAndroid/wiki/Schema-migrations

    <meta-data android:name="AA_DB_NAME" android:value="NALocator.db" />
    <meta-data android:name="AA_DB_VERSION" android:value="2" />
    <meta-data android:name="AA_MODELS"
    android:value="com.volvo.it.mobile.locator.core.entity.Location, com.volvo.it.mobile.locator.core.entity.LocationService" />

what need i to do more? do you have an worked sample?

[liupeng826]

@ImangazalievM do i need to change a lot if use ReActiveAndroid?

[ImangazalievM]

@liupeng826 No. If you want to migrate to ReActiveAndroid, read this article https://imangazalievm.gitbooks.io/reactiveandroid/migration-from-activeandroid.html

[NagoLazaro]

@joshuatam Your solution worked for me perfectly. Thanks!

[fajaranugrah]

So what to do to solve this problem? I have never used ContentProvider for all classes but one class has already created the code but still gets the report error
Thank you

[ImangazalievM]

@fajaranugrah you can start using https://github.com/ImangazalievM/ReActiveAndroid. I fixed all bugs and it works on Android O. If you want to migrate to ReActiveAndroid, please read this article https://imangazalievm.gitbooks.io/reactiveandroid/migration-from-activeandroid.html

[deiry]

@joshuatam Thank you for help! It's works perfectly.

[joshuapinter]

A nifty trick if you don't want to extend the ContentProvider to put your dynamic configuration in there, is to just dispose() of the ActiveAndroid database connection on your app initialization and just reinitialize it with your specific configuration.

This allows you to keep the normal ContentProvider as is in the AndroidManifest.xml:

<provider
  android:name="com.activeandroid.content.ContentProvider"
  android:authorities="${applicationId}"
  android:enabled="true"
  android:exported="false">
</provider>

And then just do something like this in your App's onCreate() method:

// Close existing database connection, if it exists.
try {
  ActiveAndroid.dispose();
}
catch( NullPointerException ignored ) {}

Configuration databaseConfiguration = new Configuration.Builder( this )
  .setDatabaseName( "MyDatabase" )
  .setDatabaseVersion( 100 )
  .setModelClasses( MyModel.class )
  .create();

ActiveAndroid.initialize( databaseConfiguration );

This does mean that you will have an Application.db file in your data/data/databases/ directory (from ActiveAndroid initializing with the ContentProvider) but I think that's a minor drawback in order to have a clean, dynamic configuration.