如何使用CursorAdapter從列表視圖中刪除所選項目

Question

buttononclicklistener不起作用，如何從列表中刪除所選項目

 public void onClick(View arg0) {
    //TestDBAdapter.deleteEntry(itemId);
    TestDBAdapter.delete("TABLE_NAME", "_id="+itemId, null);                    
    Toast.makeText(DisplayActivity.this, "you want delete this item", Toast.LENGTH_SHORT).show();
    cursor.requery();
    updateList();   
    notifyDataSetChanged();
}

Answer 1

這樣嘗試，

@Override
public void bindView(View view, Context context, final Cursor cursor) {

    TextView txtName = (TextView) view.findViewById(R.id.txt_name);
    txtName.setText(cursor.getString(cursor.getColumnIndex(Helper.tbl_col_username)));
    TextView txtPassword = (TextView) view.findViewById(R.id.txt_password);
    txtPassword.setText(cursor.getString(cursor.getColumnIndex(Helper.tbl_col_password)));

final String itemId = cursor.getString(cursor.getColumnIndex("id"));

    Button button = (Button) view.findViewById(R.id.btn_delete);
    button.setOnClickListener(new OnClickListener() {

        public void onClick(View arg0) {
            Log.d(TAG, "Button Click ");
            deleteRecordWithId(itemId);
            cursor.requery();
            notifyDataSetChanged();
        }
    });
}

另請參閱此鏈接， 如何使用CursorAdapter從ListView刪除選定的項目

Answer 2

在CursorAdapter支持的ListView中刷新數據的另一種可能性是創建一個新的游標並在CursorAdapter上調用swapCursor。

  cursor = newCursor();
  ((CursorAdapter) getListAdapter()).swapCursor(cursor);

希望這會有所幫助。