Android 向 ActionBar 添加微调器（不是导航
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Adding spinner to ActionBar (not Navigation
提问by user1509130
I have added a spinner to my ActionBar using the second option from the answer here.
我使用这里答案中的第二个选项向我的 ActionBar 添加了一个微调器。
How to I add a spinner adapter to the spinner? I tried using a Spinner object as Google describes herebut get a null Spinner object.
如何向微调器添加微调器适配器？我尝试使用 Google在此处描述的 Spinner 对象，但得到了一个空 Spinner 对象。
Anybody know how to do this? I don't want the spinner to be in the navigation area of the action bar but in with the other action items (I am using the split action bar).
有人知道怎么做吗？我不希望微调器位于操作栏的导航区域中，而是与其他操作项一起（我正在使用拆分操作栏）。
Thanks for the help!
谢谢您的帮助！
采纳答案by user1509130
Well, I ditched the Spinner idea for using a submenu. I realized that the spinner was for selecting things that stayed selected; submenus seamed to be a better UI fit.
好吧，我放弃了使用子菜单的 Spinner 想法。我意识到微调器是用来选择一直被选中的东西；子菜单缝合以更好地适应用户界面。
回答by Fran?ois POYER
I know this is an old question, but just in case someone stumbles on it (as I did) and still looks for a complete answer, here is how to do it using the compatibility library, so that it works from to v7 (Android 2.1 Eclair) to current v19 (Android 4.4 KitKat):
我知道这是一个老问题，但以防万一有人偶然发现它（就像我一样）并且仍然在寻找完整的答案，这里是如何使用兼容性库来做到这一点，以便它可以从 v7（Android 2.1） Eclair）到当前 v19（Android 4.4 KitKat）：
In menu_layout.xml:
在 menu_layout.xml 中：
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:yourapp="http://schemas.android.com/apk/res-auto" >
<item android:id="@+id/spinner"
yourapp:showAsAction="ifRoom"
yourapp:actionViewClass="android.widget.Spinner" />
</menu>
Using http://schemas.android.com/apk/res-autonamespace aliased as yourappenables you to use the attributes showAsAction and actionViewClass that do not exist on older versions of Android.
使用http://schemas.android.com/apk/res-auto别名为 as 的命名空间，yourapp您可以使用旧版 Android 上不存在的属性 showAsAction 和 actionViewClass。
Then in your Activity code:
然后在您的活动代码中：
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_layout, menu);
MenuItem item = menu.findItem(R.id.spinner);
Spinner spinner = (Spinner) MenuItemCompat.getActionView(item);
spinner.setAdapter(adapter); // set the adapter to provide layout of rows and content
spinner.setOnItemSelectedListener(onItemSelectedListener); // set the listener, to perform actions based on item selection
Et voilà!
等等！
回答by Budius
I know you ditched the spinner, but I'll give some hints here in case other people is having the same problem or you come to develop the same pattern in a different app
我知道你放弃了微调器，但我会在这里给出一些提示，以防其他人遇到同样的问题，或者你来在不同的应用程序中开发相同的模式
- If you got null is because you didn't properly specify the IDs. Double check the IDs.
- on of the links you showed over complicated stuff by specifying a actionLayout that is just a spinner, you can just specify an actionViewClass="android.widget.Spinner" that will do the trick.
then in the
OnCreateOptionsMenuyou do:inflater.inflate(R.menu.my_menu, menu); // inflate the menu Spinner s = (Spinner) menu.findItem(R.id.my_menu_spinner).getActionView(); // find the spinner SpinnerAdapter mSpinnerAdapter = ArrayAdapter.createFromResource(getActivity().getActionBar() .getThemedContext(), R.array.my_menu_spinner_list, android.R.layout.simple_spinner_dropdown_item); // create the adapter from a StringArray s.setAdapter(mSpinnerAdapter); // set the adapter s.setOnItemSelectedListener(myChangeListener); // (optional) reference to a OnItemSelectedListener, that you can use to perform actions based on user selection
- 如果您得到 null 是因为您没有正确指定 ID。仔细检查 ID。
- 在您通过指定一个只是一个微调器的 actionLayout 显示的复杂内容的链接上，您可以指定一个 actionViewClass="android.widget.Spinner" 来解决这个问题。
然后在
OnCreateOptionsMenu你做：inflater.inflate(R.menu.my_menu, menu); // inflate the menu Spinner s = (Spinner) menu.findItem(R.id.my_menu_spinner).getActionView(); // find the spinner SpinnerAdapter mSpinnerAdapter = ArrayAdapter.createFromResource(getActivity().getActionBar() .getThemedContext(), R.array.my_menu_spinner_list, android.R.layout.simple_spinner_dropdown_item); // create the adapter from a StringArray s.setAdapter(mSpinnerAdapter); // set the adapter s.setOnItemSelectedListener(myChangeListener); // (optional) reference to a OnItemSelectedListener, that you can use to perform actions based on user selection
happy coding...
快乐编码...
回答by Avinash Gautam
inflater.inflate(R.menu.my_menu, menu); // inflate the menu
Spinner s = (Spinner) menu.findItem(R.id.my_menu_spinner).getActionView(); // find the spinner
SpinnerAdapter mSpinnerAdapter = ArrayAdapter.createFromResource(getActivity().getActionBar() .getThemedContext(), R.array.my_menu_spinner_list, android.R.layout.simple_spinner_dropdown_item); // create the adapter from a StringArray
s.setAdapter(mSpinnerAdapter); // set the adapter
s.setOnItemSelectedListener(myChangeListener); // (optional) reference to a OnItemSelectedListener, that you can use to perform actions based on user selection
