When I call an Android ContentProvider I get the following exception:
java.lang.RuntimeException: Unable to start activity ComponentInfo{de.harm.android.couchone/de.harm.android.couchone.CouchContactClient}: java.lang.IllegalArgumentException: Unknown URL content://de.harm.android.couchone.provider/test2
These are the projects:
- https://github.com/der-harm/CouchOneProvider
- .../CouchOneContacts
Android uses the so-called ContentResolver to communicate with ContentProvider which in turn handles the persistence functionality - accessing the database.
The ContentProvider registers itself with a unique Uri. The ContentResolver calls the ContentProvider with this Uri and passes additional data, like a SQL query string and/or data to be saved.
In the CouchOneProvider/AndroidManifest.xml I have the following:
<provider android:authorities="de.harm.android.couchone.provider"
android:name=".Provider" />
The Provider uses
static {
uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
uriMatcher.addURI(PROVIDER_NAME, DB_Name, URI_COLLECTION);
uriMatcher.addURI(PROVIDER_NAME, DB_Name + "/#", URI_ENTITY);
}
and
public static boolean isCollectionUri(Uri uri) {
return uriMatcher.match(uri) == URI_COLLECTION;
}
to process the CONTENT_URI used by the ContentResolver to call the ContentProvider:
- Am I missing permissions in any of both
AndroidManifest.xml? - Am I defining the authority in
AndroidManifest.xmlwrongly? - Is the
CONTENT_URIwrong?
Update:
I have additional information:
Logcat says:
Failed to find provider info for de.harm.android.couchone.provider
This should be the starting point. But so far I couldn't find any solution.
The fully qualified classname of the ContentProvider implementation is:
de.harm.android.couchone.Provider
In AndroidManifext.xml exactly this is specified as authority, except for the name being to lower case, but this should be fine.
The package name is defined previously in the xml file, so ".Provider" should be ok, too.
As to be seen in the exception, the client calls:
content://de.harm.android.couchone.provider/test2
Logcats answer is:
Failed to find provider info for de.harm.android.couchone.provider
I don't see what's missing, perhaps it's Eclipse or emulator problem?
I install the provider as "run project as Android application".
