将数据从sqlite加载到arraylist时，我只得到最后一行。 如何获取所有记录？

Question

I am trying to populate the sqlite data to recyclerview by adding the sqlite data to arraylist. I am not getting all records but only last row of the database table.

        cursor = sqLiteHelper.getData("SELECT * FROM news");

        while (cursor.moveToNext()) {

            String image = cursor.getString(cursor.getColumnIndex("image"));
            String title = cursor.getString(cursor.getColumnIndex("title"));
            String category = cursor.getString(cursor.getColumnIndex("category"));

            mExampleList.add(new ExampleItem(image, title, category));


        }


        mExampleAdapter = new ExampleAdapter(MainActivity.this, mExampleList);
        mRecyclerView.setAdapter(mExampleAdapter);

Answer 1

Did you try this?

// Move first to be sure
cursor.moveToFirst()
while(!cursor.isAfterLast()) { // Dont jump to the next before first iteration
    String image = cursor.getString(cursor.getColumnIndex("image"));
    String title = cursor.getString(cursor.getColumnIndex("title"));
    String category = cursor.getString(cursor.getColumnIndex("category"));

    mExampleList.add(new ExampleItem(image, title, category));

    // And then 
    cursor.moveToNext()
} 
cursor.close()

How many records are in your storage? Because if there are 2 the first call to cursor.moveToNext() of the while might jump to the last.

Answer 2

if (cursor.moveToFirst()) { 
    while (!cursor.isAfterLast()) { 
        String name = cursor.getString(cursor.getColumnIndex(countyname)); 
        list.add(name); 
        cursor.moveToNext(); 
    } 
}