java - Android Java - 下拉微调器始终设置相同的文本，只想更改背景颜色

Question

我有 2 个下拉微调器，我想对其进行颜色编码。我希望 1 始终被标记为 Apple，而另一个始终被标记为 Banana。我正在使用下拉菜单来更改微调器的背景颜色。如何将文本设置为始终保持 Apple 和 Banana 状态，但仅根据所选内容更改微调器的背景颜色？每当我使用下拉菜单选择颜色时，它会将文本更改为我选择的颜色。我觉得我需要一个 setText 函数......

这是迄今为止我的代码:

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    dropdown1 = (Spinner)findViewById(R.id.spinner1);
    dropdown2 = (Spinner)findViewById(R.id.spinner2);

    String[] colors = new String []{"red", "blue", "green"};

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, colors);

    dropdown1.setAdapter(adapter);
    dropdown2.setAdapter(adapter);

    dropdown1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
            text1 = dropdown1.getSelectedItem().toString();

            if (text1.equals("red")) {
                dropdown1.setBackgroundColor(Color.parseColor("#ff0000"));
            } else if (text1.equals("green")) {
                dropdown1.setBackgroundColor(Color.parseColor("#00ff00"));
            } else if (text1.equals("blue")) {
                dropdown1.setBackgroundColor(Color.parseColor("#0000ff"));
            }
        }

        @Override
        public void onNothingSelected(AdapterView<?> parentView) {

        }

    });

Answer 1

添加以下代码，

dropdown1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
            text1 = dropdown1.getSelectedItem().toString();

            if (text1.equals("red")) {
                dropdown1.setBackgroundColor(Color.parseColor("#ff0000"));
                adapter.notifyDataSetChanged();
            } else if (text1.equals("green")) {
                dropdown1.setBackgroundColor(Color.parseColor("#00ff00"));
                adapter.notifyDataSetChanged();
            } else if (text1.equals("blue")) {
                dropdown1.setBackgroundColor(Color.parseColor("#0000ff"));
                adapter.notifyDataSetChanged();
            }
        }

        @Override
        public void onNothingSelected(AdapterView<?> parentView) {

        }

    });