Java 列'_id'；不存在。可用列：[[U Id，产品]

它一直告诉我列_id不存在，在我的整个代码中，我没有找到单词_id

public static final String TABLE_NAME = "LIST";

public static final String _ID = "_Id";
public static final String PRODUCT_NAME = "Product";

static final String DB_NAME = "LIST.DB";

static final int DB_VERSION = 1;

private SQLiteDatabase database;

private static final String CREATE_TABLE = " CREATE TABLE " + TABLE_NAME + "(" + _ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + PRODUCT_NAME + " TEXT NOT NULL );";

final String[] from = new String[]
            {DatabaseHelper. _ID , DatabaseHelper. PRODUCT_NAME};

final  int[] to = new int[]
            {R.id._Id , R.id.Product};

adapter = new SimpleCursorAdapter(this ,R.layout.viewrecord , c , from , to , 0);
        listView.setAdapter(adapter);

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您将获得您的an，我在您粘贴给我们的代码的第二行找到了单词“_Id”：public static final String _Id=“_Id”；清理->重建->文件-无效并重新启动。此答案将帮助您使用小i我的id有大写i