Question

我正在尝试从字符串数组中填充Spinner。我已经在SO上尝试了不同解决方案的各种方法，但每次微调器都是空的。

注意：我在actionbarsherlock中使用微调器（作为导航列表）

以下是代码：

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    super.onCreateOptionsMenu(menu, inflater);
    inflater.inflate(R.menu.main, menu);

    MenuItem menuItem = menu.findItem(R.id.menu_spinner);
    IcsSpinner spinner = (IcsSpinner) menuItem.getActionView();

    // Approach 1 
    // using Spinner Adapter

    SpinnerAdapter mSpinnerAdapter;

    if (Build.VERSION.SDK_INT <= 10) {
        mSpinnerAdapter = ArrayAdapter.createFromResource(activity,
                R.array.news_menu, android.R.layout.simple_spinner_item);
    } else {
        mSpinnerAdapter = ArrayAdapter.createFromResource(activity,
                R.array.news_menu,
                android.R.layout.simple_spinner_dropdown_item);
    }

    Log.d(Const.DEBUG, "Spinner Count = " + mSpinnerAdapter.getCount());


    //Approach 2
    //using ArrayAdapter

    Resources res = getResources();
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(activity,
            android.R.layout.simple_spinner_item,
            res.getStringArray(R.array.news_menu));

    Log.d(Const.DEBUG, "Adapter Count = " + adapter.getCount());

    //Approach 3
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
            activity, R.array.news_menu,
            android.R.layout.simple_spinner_item);

    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    spinner.setAdapter(adapter);


    //spinner.setSelection(0);
}

mSpinnerAdapter和adapter（array）都将计数显示为4.这是我的news_menu字符串数组

<string-array name="news_menu">
    <item>News</item>
    <item>Tour Dates</item>
    <item>Festival News And Rumors</item>
    <item>Late Night Performances</item>
</string-array>

Answer 1

我习惯做类似的事情来从资源数组中填充微调器：

 ArrayAdapter<String> adapter =  ArrayAdapter.createFromResource(this,
            R.array.news_menu, android.R.layout.simple_spinner_item);
 adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
 spinner.setAdapter(adapter);

我希望它有所帮助。

Spinner不会从字符串数组中填充

1 个答案: