Listview始终生成相同的图像

Question

我有一个listview，我正在使用自定义游标适配器从sqlite生成数据。我在listview中有两个文本字段和一个Imageview。文本字段已正确填充，但imageview始终显示相同的图像

这是我的代码

public class DatabaseHelper extends SQLiteOpenHelper {
        public static final String DATABASE_NAME = "Food.db";
        public static final String BREAKFAST_TABLE = "breakfast_table";
        public static final String LUNCH_TABLE = "lunch_table";
        public static final String DINNER_TABLE = "dinner_table";
        public static final String SNACKS_TABLE = "snacks_table";
        public static final String TOTAL_TABLE = "total_table";
        public static final String RECEIVED_TABLE = "received_table";
        public static final String COL_1 = "ID";
        public static final String COL_2 = "NAME";
        public static final String COL_3 = "CAL";
        public static final String COL_4 = "IMAGE";
        public long result;
        private SQLiteDatabase db;


public DatabaseHelper(Context context) {
    super(context, DATABASE_NAME, null, 2);
    db = getWritableDatabase();
}

@Override
public void onCreate(SQLiteDatabase db) {
    db.execSQL("create table " + BREAKFAST_TABLE + " (ID INTEGER PRIMARY KEY AUTOINCREMENT,NAME TEXT,CAL INTEGER)");
    db.execSQL("create table " + LUNCH_TABLE + " (ID INTEGER PRIMARY KEY AUTOINCREMENT,NAME TEXT,CAL INTEGER)");
    db.execSQL("create table " + DINNER_TABLE + " (ID INTEGER PRIMARY KEY AUTOINCREMENT,NAME TEXT,CAL INTEGER)");
    db.execSQL("create table " + SNACKS_TABLE + " (ID INTEGER PRIMARY KEY AUTOINCREMENT,NAME TEXT,CAL INTEGER)");
    db.execSQL("create table " + TOTAL_TABLE + " (ID INTEGER PRIMARY KEY AUTOINCREMENT,NAME TEXT,CAL INTEGER)");
    db.execSQL("create table " + RECEIVED_TABLE + " (_id INTEGER PRIMARY KEY AUTOINCREMENT,NAME TEXT,CAL INTEGER,IMAGE BLOB)");




}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    db.execSQL("DROP TABLE IF EXISTS " + BREAKFAST_TABLE);
    db.execSQL("DROP TABLE IF EXISTS " + LUNCH_TABLE);
    db.execSQL("DROP TABLE IF EXISTS " + DINNER_TABLE);
    db.execSQL("DROP TABLE IF EXISTS " + SNACKS_TABLE);
    this.onCreate(db);
}



        public Integer deleteData(String name,String tableName){
            SQLiteDatabase db = this.getWritableDatabase();
            return db.delete(tableName, "NAME = ?" ,new String[] {name});
        }


public void insertData(Food food,String tableName) {
    ContentValues contentValues = new ContentValues();
    contentValues.put(COL_2, food.getName());
    contentValues.put(COL_3, food.getCal());
    contentValues.put(COL_4,food.getImage());
    food.setId(db.insert(tableName, null, contentValues));

}
        public void insertDataToTotal(Food food) {
            ContentValues contentValues = new ContentValues();
            contentValues.put(COL_2, food.getName());
            contentValues.put(COL_3, food.getCal());


            food.setId(db.insert(TOTAL_TABLE, null, contentValues));

        }

        public ArrayList<Food> getAllFood(String tableName) {
            SQLiteDatabase db = this.getReadableDatabase();
            ArrayList<Food> listItems = new ArrayList<Food>();


            Cursor cursor = db.rawQuery("SELECT * from " + tableName,
                    new String[] {});

            if (cursor.moveToFirst()) {
                do {
                    Food food = new Food(cursor.getString(cursor.getColumnIndex(COL_2)),cursor.getInt(cursor.getColumnIndex(COL_3)));
                    listItems.add(food);
                } while (cursor.moveToNext());
            }

            cursor.close();

            return listItems;
        }


        public Cursor getCursor(){
            String selectQuery = "SELECT * FROM received_table ORDER BY name";
            Cursor c = db.rawQuery(selectQuery, null);
            return c;
        }

        public ArrayList<Food> getAllContacts() {
            ArrayList<Food> foodList = new ArrayList<Food>();

            String selectQuery = "SELECT * FROM received_table ORDER BY name";

            SQLiteDatabase db = this.getWritableDatabase();
            Cursor cursor = db.rawQuery(selectQuery, null);

            if (cursor.moveToFirst()) {
                do {
                    Food food = new Food();
                    food.setName(cursor.getString(1));
                    food.setCal(cursor.getInt(2));
                    food.setImage(cursor.getBlob(3));

                    foodList.add(food);
                } while (cursor.moveToNext());
            }
            db.close();

            return foodList;}}








public class ReceivedItems extends AppCompatActivity {
ListView receivedMenu;
DatabaseHelper myDb;
Adapter itemAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_recieved_items);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    myDb = new DatabaseHelper(this);


    itemAdapter = new Adapter(this,myDb.getCursor());
    receivedMenu = (ListView) findViewById(R.id.receivedMenu);
    receivedMenu.setAdapter(itemAdapter);}}








class Adapter extends CursorAdapter {
private LayoutInflater mLayoutInflater;
private Context mContext;
public Adapter(Context context, Cursor c) {
    super(context, c);
    mContext = context;
    mLayoutInflater = LayoutInflater.from(context);
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
    View v = mLayoutInflater.inflate(R.layout.received_list, parent, false);
    return v;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {
    TextView txtName=(TextView)view.findViewById(R.id.receivedName);
    TextView txtCal=(TextView)view.findViewById(R.id.recCal);
    ImageView image = (ImageView)view.findViewById(R.id.recievedIcon);

    txtName.setText(cursor.getString(1));
    txtCal.setText(cursor.getString(2));

    ByteArrayInputStream imageStream = new ByteArrayInputStream(cursor.getBlob(3));
    Bitmap theImage = BitmapFactory.decodeStream(imageStream);
    image.setImageBitmap(theImage);}}

编辑：here is a sample from my received table

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:textAlignment="viewEnd">

<ImageView
    android:id="@+id/recievedIcon"
    android:layout_width="60dp"
    android:layout_height="60dp"
    android:padding="5dp" />

<LinearLayout android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <TextView
        android:id="@+id/receivedName"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textColor="#33CC33"
        android:paddingBottom="5dp"
        android:layout_weight="0.5" />
</LinearLayout>

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="#33CC33"
    android:textAlignment="viewEnd"
    android:id="@+id/recCal"
    android:paddingBottom="5dp"
    android:layout_weight="0.5" />