Android - Cursor onMapReady (Marker)

Question

Ich versuche, meinen Inhalt von SQLite in Markern "aufzublasen", aber die Lösung, die ich von here nahm, funktioniert nicht, und es wirft keine Informationen über Log auf.

Ich bin ein bisschen neu auf dieser Marker Sachen und SQLite

Mein Code innerhalb des Fragment:

SQLiteHelper dbHelper = new SQLiteHelper(getActivity()); pds = new ParksDataSource(dbHelper.db);

parks = pds.getAllParks(); 

    List<Marker> markersList = new ArrayList<Marker>(); 
    int i = 0; 
    Cursor cursor = db.rawQuery("SELECT * FROM " + SQLiteHelper.TABLE_PARKS, 
      null); 
    try { 
     while (cursor.moveToNext()) { 
      String[] latlong = cursor.getString(cursor.getColumnIndex(SQLiteHelper.COL_PARKS_COORDINATES)).split(","); 
      double latitude = Double.parseDouble(latlong[0]); 
      double longitude = Double.parseDouble(latlong[1]); 
      mark = new LatLng(latitude, longitude); 
      Marker mPark = mMap.addMarker(new MarkerOptions().position(mark) 
        .title(cursor.getString(cursor.getColumnIndex(SQLiteHelper.COL_PARKS_TITLE))) 
        .icon(BitmapDescriptorFactory.fromBitmap(writeTextOnDrawable(R.mipmap.ic_pin, cursor.getString(cursor.getColumnIndex(SQLiteHelper.COL_PARKS_FREE)))))); 
      mPark.setTag(0); 
      markersList.add(mPark); 
      Log.d("HierParks", "Pin: " + i + ", " + latitude + "," + longitude + " - Park:" + cursor.getString(cursor.getColumnIndex(SQLiteHelper.COL_PARKS_TITLE))); 
      i++; 
     } 
    } finally { 
     cursor.close(); 
    } 

    LatLngBounds.Builder builder = new LatLngBounds.Builder(); 
    for (Marker m : markersList) { 
     builder.include(m.getPosition()); 
    }` 

Dank für Ihre Zeit danken.

Answer 1

Endlich habe ich es geschafft, es zu reparieren, hoffe, dass diese jemandem helfen.

Mein ParkDataSource:

public Cursor getAll() { 
     return db.rawQuery("SELECT * FROM " + SQLiteHelper.TABLE_PARKS, 
       null); 
    } 

Mein Fragment:

SQLiteHelper dbHelper = new SQLiteHelper(getActivity()); 
     pds = new ParksDataSource(dbHelper.db); 
     cursor = pds.getAll(); 

     List<Marker> markersList = new ArrayList<Marker>(); 
     int i = 0; 
     try { 
      while (cursor.moveToNext()) { 
       String[] latlong = cursor.getString(cursor.getColumnIndex(SQLiteHelper.COL_PARKS_COORDINATES)).split(","); 
       double latitude = Double.parseDouble(latlong[0]); 
       double longitude = Double.parseDouble(latlong[1]); 
       mark = new LatLng(latitude, longitude); 

       if (cursor.getString(cursor.getColumnIndex(SQLiteHelper.COL_PARKS_SLOTS)) == null){ 

        Marker mPark = map.addMarker(new MarkerOptions().position(mark) 
          .title(cursor.getString(cursor.getColumnIndex(SQLiteHelper.COL_PARKS_TITLE))) 
          .icon(BitmapDescriptorFactory.fromBitmap(writeTextOnDrawable(R.mipmap.ic_pin, cursor.getString(cursor.getColumnIndex(SQLiteHelper.COL_PARKS_FREE)))))); 
        mPark.setTag(0); 
        markersList.add(mPark); 
       } 
       i++; 
      } 
     } finally { 
      cursor.close(); 
     } 

     LatLngBounds.Builder builder = new LatLngBounds.Builder(); 
     for (Marker m : markersList) { 
      builder.include(m.getPosition()); 
     }