java - 为什么我得到 "mergeCursor"对象而不是 "string"？

Question

当我执行下面的代码时，我想得到 text="All" ，因为它的可见值(value)就是这样，但我一直在得到

String text = "android.database.MergeCursor@88a4aaa"

代码:

String[] from = new String[]{"type"};
        int[] to = new int[]{android.R.id.text1};
Cursor cursorTypes = coctelsOpenHelper.getTypes();
        //Add "All" option to the spinner
        MatrixCursor matrixCursor = new MatrixCursor(new String[] { "_id", "type"});
        matrixCursor.addRow(new Object[] { "0", getString(R.string.title_all_drinks) });

        MergeCursor mergeCursor = new MergeCursor(new Cursor[] { matrixCursor, cursorTypes });

        spinnerType = view.findViewById(R.id.spinnerDrinkType);
        adapter = new SimpleCursorAdapter(getContext(), android.R.layout.simple_spinner_item, mergeCursor, from, to,0);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinnerType.setAdapter(adapter);

        spinnerType.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
        {
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
            {
               //When I try to debug, the text value is the given above, a MergeCursor
                text = ((String)spinnerType.getSelectedItem().toString());

                selectedItem = position;
                addSelection();
                //This ones don't have anything in common with the adapter from the spinner, are for a RecyclerView
                initializeData();
                initializeAdapter();
            }
            public void onNothingSelected(AdapterView<?> parent)
            {
            }
        });

不，“文本”不再被使用，所以它的值没有改变，我也尝试过

spinnerType.getSelectedItem().toString();

但得到了相同的结果。

我想做的就是获取 Spinner 上文本的字符串值，并将其与 R.string.myvalue 进行比较与 text.equals(getString(R.string.myvalue))

Answer 1

你的变量的类型是什么？