如何从列表视图中使用的CursorAdapter删除选定的项目 [英] how to remove selected item from listview using CursorAdapter

问题描述

buttononclicklistener不工作，如何从列表中删除所选的项目

 公共无效的onClick（查看为arg0）{
    //TestDBAdapter.deleteEntry(itemId）;
    TestDBAdapter.delete（TABLE_NAME，_id =+的itemId，NULL）;
    Toast.makeText（DisplayActivity.this，你要删除此项目，Toast.LENGTH_SHORT）.show（）;
    cursor.requery（）;
    updateList（）;
    notifyDataSetChanged（）;
}
 

解决方案

尝试这样,,

  @覆盖
公共无效bindView（查看视图，上下文的背景下，最终光标光标）{    TextView的txtName的=（TextView中）view.findViewById（R.id.txt_name）;
    txtName.setText（cursor.getString（cursor.getColumnIndex（Helper.tbl_col_username）））;
    TextView的txtPassword =（TextView中）view.findViewById（R.id.txt_password）;
    txtPassword.setText（cursor.getString（cursor.getColumnIndex（Helper.tbl_col_password）））;最后弦乐的itemId = cursor.getString（cursor.getColumnIndex（ID））;    Button按钮=（按钮）view.findViewById（R.id.btn_delete）;
    button.setOnClickListener（新OnClickListener（）{        公共无效的onClick（查看为arg0）{
            Log.d（TAG，点击链接）;
            deleteRecordWithId（的itemId）;
            cursor.requery（）;
            notifyDataSetChanged（）;
        }
    }）;
}
 

也可参考此链接，<一个href=\"http://stackoverflow.com/questions/8416389/how-to-remove-a-selected-item-from-listview-using-cursoradapter\">How使用来自ListView中删除所选项目的CursorAdapter

buttononclicklistener is not working,how to delete the selected item from list

 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();
}

解决方案

Try like this,,

@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();
        }
    });
}

also refer this link, How to remove a selected item from ListView using CursorAdapter

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