Question

我能够以这种方式让Spinner成为行动吧; re / values / languages.xml中的项目数组

 <string-array name="languages">
    <item>Finnish</item>
    <item>French</item>
    <item>German</item>
    <item>Slovakian</item>
    <item>Polish</item>
</string-array>

在res / menu / main.xml

中

  <item
    android:id="@+id/menuSort"
    android:actionLayout="@layout/spinner"
    android:showAsAction="ifRoom"
    android:title="@string/choose"/>

在res / layout / spinner.xml中

<Spinner
    android:id="@+id/spinner"
    android:layout_width="150dp"
    android:layout_height="wrap_content" 
    android:entries="@array/languages"/>

最后是活动课;

 public class Base_Activity extends Activity {

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main, menu);
    final Spinner spinner = new Spinner(this);
    Log.i("DEBUG1", "CHECKPOINT1");
    ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(
            this, android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(spinnerArrayAdapter);
    Log.i("DEBUG2", "CHECKPOINT2");
    spinnerArrayAdapter.setDropDownViewResource(0);
    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

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

               String items=spinner.getSelectedItem().toString();
               Log.i("Selected item : ",items);
        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub

        }

    });
    return true;
}

}

我没有得到的是关于旋转项目的ItemSelected没有任何反应。从我的xml文件中可以看出，我甚至不需要Adapter来获取微调器。但我正在使用适配器来获得OnItemSelected。请帮帮我这里发生了什么？

Answer 1

尝试这可能有助于你

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        final Spinner spinner = (Spinner) menu.getItem(0).getActionView().findViewById(R.id.spinner);
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

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

                String items = spinner.getSelectedItem().toString();
                Log.i("Selected item : ", items);
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {

            }

        });
        return super.onCreateOptionsMenu(menu);
    }

Answer 2

如果您想要点击活动，则必须添加OnItemClickListener而不是OnItemSelectedListener。

只有选择项目或使用轨迹球或向上/向下箭头浏览视图时，您的方法才有效。如果您想要点击，请添加OnItemClickListener并覆盖

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

微调器的OnItemClickListener

2 个答案: