How to add a Dropdown item on the action bar

In my Android Honeycomb application I use Tabs as the navigation style. I would like to add one item next to the overflow button, but I want that item to be a dropdown list, and the user will be able to select an option there, but not related to navigation. What is the easiest way since I'm using mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

Is it possible to do it without using a custom view?

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小开
最佳答案

First option:

menu/options.xml:

<item
android:icon="@drawable/ic_menu_sort"
android:showAsAction="ifRoom">
<menu>
<item
android:id="@+id/menuSortNewest"
android:title="Sort by newest" />
<item
android:id="@+id/menuSortRating"
android:title="Sort by rating" />
</menu>
</item>

Second option:

menu/options.xml:

<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/menuSort"
android:showAsAction="ifRoom"
android:actionLayout="@layout/action_sort"  />
</menu>

layout/action_sort.xml:

<Spinner xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/ic_menu_refresh"
android:entries="@array/order" />

Docs for menu resources - http://developer.android.com/guide/topics/resources/menu-resource.html

小开

Absolutely the best and and the simplest answer I found so far is here.

Basically, no need for custom layout in this case. Just set the actonViewClass:

<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" /> <== this is all that's required
</menu>

And then handle it in onCreateOptionsMenu, as usual:

@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); // get the spinner
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(onItemSelectedListener);

This is by far the simplest and cleanest solution. Credits to François Poyer, the original author.

小开

It will work as dropdown only

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<!--<item-->
<!--android:id="@+id/save_contact"-->
<!--android:icon="@drawable/edit_new"-->
<!--android:title="Save Contact"-->
<!--app:showAsAction="never" />-->


<item
android:id="@+id/send_money"
android:icon="@drawable/edit_new"
android:title="Send Money"
app:showAsAction="never" />


<item
android:id="@+id/request_money"
android:icon="@drawable/edit_new"
android:title="Request money"
app:showAsAction="never" />


<item
android:id="@+id/recharge"
android:icon="@drawable/edit_new"
android:title="Recharge"
app:showAsAction="never" />
</menu>

inside fragment

setHasOptionsMenu(true)

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




super.onCreateOptionsMenu(menu, inflater);
}

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