Ich habe so ziemlich alles gelesen, was es hier zu diesem Thema zu finden gibt, und komme nicht darüber hinweg.

Ich habe eine einfache App beginnend mit demMainActivity, meinContent Provider ist korrekt definiert inAndroidManifest.xml, dasContentProvider Klasse scheint in Ordnung ... dies wurde auf einem Nexus i9250 mit 4.3 und einem Asus Memo Pad mit 4.2.1 sowie VDevices mit Jelly Bean getestet. Die App läuft in jedem Fall und stürzt nicht ab, das einzige was dieLogCat gibt mir ist"Failed to find provider info for de.somename.provider" an dem Punkt, an dem eines meiner Fragmente versucht, das abzufragenContent Provider und einen Cursor bekommen. Hier der Code:

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<uses-sdk android:minSdkVersion="14"
          android:targetSdkVersion="18" />

<application android:allowBackup="true"
             android:icon="@drawable/ic_launcher"
             android:label="@string/app_name"
             android:theme="@style/AppTheme" >
    <activity android:name="de.somename.hvk3.MainActivity"
              android:label="@string/app_name" >
              <intent-filter>
                  <action android:name="android.intent.action.MAIN" />
                  <category android:name="android.intent.category.LAUNCHER" />
              </intent-filter></activity>
    <activity android:name="de.somename.hvk3.UserSettingActivity"
              android:label="@string/settings" ></activity>
    <provider android:authorities="de.somename.provider"
              android:enabled="true"
              android:multiprocess="true"
              android:name=".hvkContentProvider"
              android:exported="true" ></provider>
</application>

hvkContentProvider.java

    public class hvkContentProvider extends ContentProvider {

private static final String DATABASE_NAME = "hvkDB";
private static final int DATABASE_VERSION = 1;
public static final String Authority = "de.somename.provider";
public static final String ElementPath = "/hv_kontakte";
public static final Uri CONTENT_URI = Uri.parse("content://" + Authority + ElementPath);
private static final int ALLROWS = 1;
private static final int SINGLE_ROW = 2;

private static final UriMatcher suriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
static{
    suriMatcher.addURI("de.somename.provider", ElementPath, ALLROWS);
    suriMatcher.addURI("de.somename.provider", ElementPath + "/#", SINGLE_ROW);
}

public static final String KEY_ID = "_id";
public static final String KEY_TYPE = "type";
public static final String KEY_CLTYP = "cltyp";
public static final String KEY_MDT = "mdt";
public static final String KEY_OBJ = "obj";
public static final String KEY_VTR = "vtr";
public static final String KEY_FKZ = "fkz";
public static final String KEY_NAME = "name";
public static final String KEY_VNAME = "vname";
public static final String KEY_TEL = "tel";
public static final String KEY_FAX = "fax";
public static final String KEY_MOBIL = "mobil";
public static final String KEY_EMAIL = "email";

private MySQLiteOpenHelper myOpenHelper;

@Override
public boolean onCreate() {

    myOpenHelper = new MySQLiteOpenHelper(getContext(), DATABASE_NAME, null, DATABASE_VERSION);
    return true;
}

@Override
public Cursor query(Uri uri, String[] projection, String selection,
        String[] selectionArgs, String sortOrder) {

    SQLiteDatabase db = myOpenHelper.getReadableDatabase();

    String groupBy = null;
    String having = null;
    SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder();
    queryBuilder.setTables(MySQLiteOpenHelper.DATABASE_TABLE);

    switch(suriMatcher.match(uri)){
    case SINGLE_ROW:
        String rowID = uri.getPathSegments().get(1);
        queryBuilder.appendWhere(KEY_ID + "=" + rowID);
    default: break;
    }

    Cursor cursor = queryBuilder.query(db, projection, selection, selectionArgs, groupBy, having, sortOrder);

    return cursor;
}

@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
    SQLiteDatabase db = myOpenHelper.getWritableDatabase();
    switch(suriMatcher.match(uri)){
    case SINGLE_ROW:
        String rowID = uri.getPathSegments().get(1);
        selection = KEY_ID + "=" + rowID
                + (!TextUtils.isEmpty(selection) ?
                " AND (" + selection + ')' : "");
    default: break;
    }
    //To return the number of deleted items you must specify a where clause. To delete all rows and return a value pass in "1"
    if (selection == null)
        selection = "1";

    return db.delete(MySQLiteOpenHelper.DATABASE_TABLE, selection, selectionArgs);
}

@Override
public Uri insert(Uri uri, ContentValues values) {

    SQLiteDatabase db = myOpenHelper.getWritableDatabase();
    String nullColumnHack = null;
    long id = db.insert(MySQLiteOpenHelper.DATABASE_TABLE, nullColumnHack, values);

    if(id > -1){
        Uri insertedId = ContentUris.withAppendedId(CONTENT_URI, id);
        getContext().getContentResolver().notifyChange(insertedId, null);
        return insertedId;
    }
    else
        return null;
}

@Override
public int update(Uri uri, ContentValues values, String selection,
        String[] selectionArgs) {

    SQLiteDatabase db = myOpenHelper.getWritableDatabase();

    switch(suriMatcher.match(uri)){
    case SINGLE_ROW:
        String rowID = uri.getPathSegments().get(1);
        selection = KEY_ID + "=" + rowID
            + (!TextUtils.isEmpty(selection) ?
            " AND (" + selection + ')' : "");
    default: break;
    }

    return db.update(MySQLiteOpenHelper.DATABASE_TABLE, values, selection, selectionArgs);
}

@Override
public String getType(Uri uri) {
    switch(suriMatcher.match(uri)){
    case ALLROWS:
        return "vnd.android.cursor.dir/vnd.somename.contacts";
    case SINGLE_ROW:
        return "vnd.android.cursor.item/vnd.somename.contacts";
    default:
        throw new IllegalArgumentException("Unsupported URI: " + uri);
    }
}

@Override
public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {

    //Find the row ID and use it as a filename
    String rowID = uri.getPathSegments().get(1);

    //Create a file object in the applications external files directory
    String picsDir = Environment.DIRECTORY_PICTURES;
    File file = new File(getContext().getExternalFilesDir(picsDir), rowID);

    if(!file.exists()) {
        try{
            file.createNewFile();
        } catch (IOException e) {
            //Log.d(TAG, "File creation failed: " + e.getMessage());
        }
    }

    //Translate the mode parameter to the corresponding Parcel File Descriptor open mode
    int fileMode = 0;
    if(mode.contains("w"))
        fileMode |= ParcelFileDescriptor.MODE_WRITE_ONLY;
    if(mode.contains("r"))
        fileMode |= ParcelFileDescriptor.MODE_READ_ONLY;
    if(mode.contains("+"))
        fileMode |= ParcelFileDescriptor.MODE_APPEND;

    return ParcelFileDescriptor.open(file, fileMode);
}

private class MySQLiteOpenHelper extends SQLiteOpenHelper {     //used to be static

    public static final String DATABASE_TABLE = "hv_kontakte";
    private static final String DATABASE_CREATE = 
            "CREATE TABLE " + DATABASE_TABLE + "(" + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
                    KEY_TYPE + " TEXT, " + KEY_CLTYP + " TEXT, " + KEY_MDT + " INTEGER, " + KEY_OBJ + " INTEGER, "
                    + KEY_VTR + " INTEGER, " + KEY_FKZ + " INTEGER, " + KEY_NAME + " TEXT, " + KEY_VNAME + " TEXT, "
                    + KEY_TEL + " TEXT, " + KEY_FAX + " TEXT, " + KEY_MOBIL + " TEXT, " + KEY_EMAIL + " TEXT)";

    public MySQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version){
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase database) {
        database.execSQL(DATABASE_CREATE);
        hvkContentProvider.this.insertSomeContacts();
    }

    @Override
    public void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) {
        database.execSQL("DROP TABLE IF EXISTS" + DATABASE_TABLE);
        onCreate(database);
    }
}

}

HdwFragment.java

public class HdwFragment extends Fragment{

private SimpleCursorAdapter hdwDataAdapter;
private ListView listview;
public static final String ARG_SECTION_NUMBER = "section_number";
private static final String TAG = "HdwFragment";
public HdwFragment(){}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState){

    Context context = getActivity();
    View rootView = inflater.inflate(R.layout.fragment_all,container, false);
    TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
    dummyTextView.setText("Dienstleister");
    //android.support.v4.app.LoaderManager loaderManager = getLoaderManager();

    Log.i(TAG, "Before getContentResolver");
    ContentResolver cr = context.getContentResolver();
    Log.i(TAG, "Before result_columns");
    String[] result_columns = new String[] {
            hvkContentProvider.KEY_ID,
            hvkContentProvider.KEY_TYPE,
            hvkContentProvider.KEY_CLTYP,
            hvkContentProvider.KEY_NAME,
            hvkContentProvider.KEY_VNAME
    };
    Log.i(TAG, "Before where,whereArgs and order");
    String where = null;
    String whereArgs[] = null;
    String order = null;
    Log.i(TAG, "Before resultCursor action");
    Log.i(TAG, "hvkContentProvider URI: " + hvkContentProvider.CONTENT_URI);
    Cursor resultCursor = cr.query(hvkContentProvider.CONTENT_URI, result_columns, where, whereArgs, order);
    Log.i(TAG, "resultCursor = " + resultCursor);
    Log.i(TAG, "Before fromColumns");
    String[] fromColumns = new String[]{
            hvkContentProvider.KEY_TYPE,
            hvkContentProvider.KEY_CLTYP,
            hvkContentProvider.KEY_NAME,
            hvkContentProvider.KEY_VNAME    
    };
    Log.i(TAG, "Before toViews");
    int[] toViews = new int[]{
        R.id.contactType,
        R.id.contactCltype,
        R.id.contactName,
        R.id.contactVname
    };
    Log.i(TAG, "Before Adapter");
    hdwDataAdapter = new SimpleCursorAdapter(getActivity(), R.layout.object_list_item, resultCursor, fromColumns, toViews, 0);
    listview = (ListView) rootView.findViewById(R.id.list_all);
    listview.setAdapter(hdwDataAdapter);
    Log.i(TAG, "Before return Layout");
    return (LinearLayout) rootView;
}

@Override
public void onActivityCreated(Bundle savedInstanceState){
    super.onActivityCreated(savedInstanceState);

    //Bundle args = null;
    //loaderManager.initLoader(LOADER_ID, args, loaderCallback);
}

}

Die Methode: insertSomeFunctions () habe ich weggelassen, da es hier keinen Unterschied macht. Müssen das wirklich erledigen.