我想在没有 cursor.requery 的情况下使用该行中的按钮删除列表视图中的一行，因为它已贬值

Question

我正在使用带有 3 个 TextView 和 1 个按钮的 CursorAdapter。我想在按下按钮时从我的数据库中删除该条目。
注意：有很多关于此的帖子，但是它们都使用现在已贬值的 "cursor.requery"

建议相同的代码

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

    TextView viewID = (TextView) view.findViewById(R.id.viewID);
    TextView viewAmount=(TextView) view.findViewById(R.id.viewAmount);
    TextView viewCategory=(TextView) view.findViewById(R.id.viewCategory);
    Button buttonDelete = (Button) view.findViewById(R.id.buttonDelete);

    final int id = cursor.getInt(cursor.getColumnIndexOrThrow("_id"));
    String amount = cursor.getString(cursor.getColumnIndexOrThrow("amount"));
    String category = cursor.getString(cursor.getColumnIndexOrThrow("category"));

    viewID.setText(String.valueOf(id));
    viewAmount.setText(amount);
    viewCategory.setText(category);

    buttonDelete.setOnClickListener(new View.OnClickListener() {
        @Override
            public void onClick(View v) {
                Toast.makeText(context, "Deleted item " + id, Toast.LENGTH_SHORT).show();
            //Do I create a DB handler here and run a dbHandler.deleteItem(id)   
            //method or do something else?    

            }
        });

    }

Answer 1

试试这个

buttonDelete.setOnClickListener(new View.OnClickListener() {
    @Override
        public void onClick(View v) {
            Toast.makeText(context, "Deleted item " + id, Toast.LENGTH_SHORT).show();
            String query = "DELETE * from *table_name* where _id = "+ id + "";
            db.execQuery(query) // db is your DatabaseHelper  
            startActivity(getIntent()); 
            finish();                
        }
    });

}

我想在没有 cursor.requery 的情况下使用该行中的按钮删除列表视图中的一行，因为它已贬值

I want to delete a row in a listview using a button in that row without cursor.requery as it is depreciated

sqlite

android

cursor

android-cursoradapter