Fehler bei der Suche nach Anbieterinformationen für <benutzerdefinierter Anbieter>

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Ich habe so ziemlich alles gelesen, was es zu diesem Thema zu finden gibt.

Ich habe eine einfache Anwendung, mit den MainActivity beginnen, meine Content Provider richtig in AndroidManifest.xml definiert ist, scheint die ContentProvider Klasse alrighty ... dies auf einen Nexus i9250 läuft getestet wurde als 4.2.1 4.3 und ein Asus Memo Pad läuft und VDevices mit Jelly Bean. Die App läuft in jedem Fall und stürzt nicht ab, das einzige, was die LogCat mir gibt, ist "Failed to find provider info for de.somename.provider" an dem Punkt, wo eines meiner Fragmente versucht, die Content Provider abzufragen und einen Cursor zu bekommen. Hier ist 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() i out verlassen haben, da es hier keinen Unterschied machen, setzen werde ein Kopfgeld auf so schnell wie möglich. Wirklich müssen Sie das erledigen.

Answer 1

<provider android:authorities="de.somename.provider" 
    android:enabled="true" 
    android:multiprocess="true" 
    android:name=".hvkContentProvider" 
    android:exported="true" ></provider> 

Von Referenzseite auf <provider>: Link

android: Behörden: ...... Konflikte zu vermeiden, sollte Behörde Namen Verwenden Sie eine Java-ähnliche Namenskonvention (z. B. com.ex groß.provider.cartoonprovider). Normalerweise ist es der Name der ContentProvider-Unterklasse, die den Provider implementiert.

In Ihrem Fall sollte android:authorities den Wert haben: de.somename.provider.hvkContentProvider.

---

android: name: ...... Der Name der Klasse, die den Inhalt Provider implementiert, eine Unterklasse von Contentprovider.Dies sollte ein vollständig qualifizierter Klassenname sein (z. B. "com.example.project.TransportationProvider"). Wenn das erste Zeichen des Namens jedoch eine Kurzbezeichnung ist, wird an den Paketnamen angehängt, der im Element angegeben ist.

Also, wenn Sie package im manifest Tag von AndroidManifest.xml definieren, stellen Sie sicher, hvkContentProvider ist in dass Paket. Sonst, ändern Sie android:name=".hvkContentProvider" zu android:name="de.somename.hvk3.hvkContentProvider" oder your.package.name.hvkContentProvider

Answer 2

Versuchen vollständig qualifizierten Weg in android:authorities Verwendung dadurch de.somename.provider ersetzt mit de.somename.provider.hvkContentProvider in so dass sie wie folgt wird.

<provider android:authorities="de.somename.provider.hvkContentProvider" 
       android:enabled="true" 
       android:multiprocess="true" 
       android:name=".hvkContentProvider" 
       android:exported="true" ></provider> 

Sie können refer this