android - 从 1 填充 spinner2 并能够选择 spinner2 值和 toast 选择

Question

为此苦苦挣扎，所以这就是我所拥有的。

微调器 1 数组。

 <!--for spinner 1-->
 <string-array name="Manu_array">
 <item>Manu 1xsd</item>
 <item>Manu 2xrsd</item>
 <item>Manu 3x4rsd</item>
 </string-array>

微调器 2 个数组。

<!--for spinner 2-->

<string-array name="Manu 1xsd">
<item>a1</item>
<item>a2</item>
<item>a3</item>
<item>a4</item>
</string-array>

 <string-array name="Manu 2xrsd">
 <item>bg 1</item>
 <item>bg 2</item>
 </string-array>

 <string-array name="Manu 3x4rsd">
 <item>z1</item>
 <item>z2</item>
 <item>zd4</item>
 <item>xs5</item>
 <item>fg34</item>
 </string-array>

所以旋转器 1 我会选择“Manu 3x4rsd”然后旋转器 2“xs5”我会 Toast“Manu 3x4rsd”+“xs5”

我选择 Spinner 1 的 Java 代码:

final Spinner[] spinner1 = {(Spinner) findViewById(R.id.Spinner1)};

 // Create an ArrayAdapter using the string array and a default spinner layout
 ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
 R.array.Manu_array, R.layout.textview);

  spinner1[0].setAdapter(adapter);
  // Specify the layout to use when the list of choices appears
  adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
  // Apply the adapter to the spinner
  spinner1[0].setAdapter(adapter);

  spinner1[0].setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

  public void onItemSelected(AdapterView<?> arg0, View arg1,
                               int arg2, long arg3) {

        int index = arg0.getSelectedItemPosition();
        // storing string resources into Array
        Manu= getResources().getStringArray(R.array.Manu_array);

        Toast.makeText(getBaseContext(), "You have selected : " + Manu[index],
                Toast.LENGTH_SHORT).show();

   }

    public void onNothingSelected(AdapterView<?> arg0) {
        // do nothing
    }
});

我选择 Spinner 2 的 Java 代码

final  Spinner Spinner2= (Spinner) findViewById(R.id.Spinner2);
Spinner1[0].setOnItemSelectedListener(new adapterView.OnItemSelectedListener() {

@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
 int arrayId = 0;
 switch (position) {//get array id according to selected position
 case 0:
 arrayId = R.array.Manu_1xsd_array;
 break;
 case 1:
 arrayId = R.array.Manu_2xrsd;
 break;
 case 2:
 arrayId = R.array.Manu_3x4rsd.array;
 break;
 };

 ArrayAdapter<CharSequence> adapterL =   ArrayAdapter.createFromResource(settings.this, arrayId, R.layout.textview);
Spinner1.setAdapter(adapterL);

String Spinner1 = Spinner1.getSelectedItem().toString();

Toast.makeText(getBaseContext(), "You have selected : " + Spinner1,
Toast.LENGTH_SHORT).show();

                }

                public void onNothingSelected(AdapterView<?> arg0) {
            // do nothing
        }

问题是虽然我可以看到微调器 2 中填充的值并滚动浏览它们并且看起来我可以选择它们，但我没有代码可以在选择它们和生成 toast 时执行任何操作。我试图在微调器中创建一个监听器，但我无法做任何事情来让它按预期运行。

所以我怀疑我正在以完全错误的方式解决问题。

一旦我可以烘烤微调器 1 和微调器 2 的选定值，我应该能够将它们组合起来以从字符串列表中读取以将它们组合起来以发出命令。

想要使用微调器来获得视觉效果，而不是有一个很大的列表来滚动浏览以选择所需的值。

Answer 1

以下代码根据从第一个微调器中选择的值填充第二个微调器，并在从第二个微调器中选择一个项目时显示 toast 。

        final Spinner s1= (Spinner) findViewById(R.id.Spinner1);
        final Spinner s2= (Spinner) findViewById(R.id.Spinner2);
        final ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.Manu_array, R.layout.textview);

        s1.setAdapter(adapter);
        s1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                int arrayId = 0;
                switch (position) {//get array id according to selected position
                    case 0:
                        arrayId = R.array.Manu_1xsd_array;
                        break;
                    case 1:
                        arrayId = R.array.Manu_2xrsd;
                        break;
                    case 2:
                        arrayId = R.array.Manu_3x4rsd.array;
                        break;
                }
                ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, arrayId, R.layout.textview);
                s2.setAdapter(adapter);
            }

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

            }
        });
        s2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                String msg = s1.getSelectedItem().toString() + s2.getAdapter().getItem(position).toString();
                Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_SHORT).show();
            }

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

            }
        });